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sepgsql.h File Reference
#include "catalog/objectaddress.h"
#include "fmgr.h"
#include <selinux/selinux.h>
#include <selinux/avc.h>
Include dependency graph for sepgsql.h:
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Go to the source code of this file.

Macros

#define SEPGSQL_LABEL_TAG   "selinux"
 
#define SEPGSQL_MODE_DEFAULT   1
 
#define SEPGSQL_MODE_PERMISSIVE   2
 
#define SEPGSQL_MODE_INTERNAL   3
 
#define SEPGSQL_MODE_DISABLED   4
 
#define SEPG_CLASS_PROCESS   0
 
#define SEPG_CLASS_FILE   1
 
#define SEPG_CLASS_DIR   2
 
#define SEPG_CLASS_LNK_FILE   3
 
#define SEPG_CLASS_CHR_FILE   4
 
#define SEPG_CLASS_BLK_FILE   5
 
#define SEPG_CLASS_SOCK_FILE   6
 
#define SEPG_CLASS_FIFO_FILE   7
 
#define SEPG_CLASS_DB_DATABASE   8
 
#define SEPG_CLASS_DB_SCHEMA   9
 
#define SEPG_CLASS_DB_TABLE   10
 
#define SEPG_CLASS_DB_SEQUENCE   11
 
#define SEPG_CLASS_DB_PROCEDURE   12
 
#define SEPG_CLASS_DB_COLUMN   13
 
#define SEPG_CLASS_DB_TUPLE   14
 
#define SEPG_CLASS_DB_BLOB   15
 
#define SEPG_CLASS_DB_LANGUAGE   16
 
#define SEPG_CLASS_DB_VIEW   17
 
#define SEPG_CLASS_MAX   18
 
#define SEPG_PROCESS__TRANSITION   (1<<0)
 
#define SEPG_PROCESS__DYNTRANSITION   (1<<1)
 
#define SEPG_PROCESS__SETCURRENT   (1<<2)
 
#define SEPG_FILE__READ   (1<<0)
 
#define SEPG_FILE__WRITE   (1<<1)
 
#define SEPG_FILE__CREATE   (1<<2)
 
#define SEPG_FILE__GETATTR   (1<<3)
 
#define SEPG_FILE__UNLINK   (1<<4)
 
#define SEPG_FILE__RENAME   (1<<5)
 
#define SEPG_FILE__APPEND   (1<<6)
 
#define SEPG_DIR__READ   (SEPG_FILE__READ)
 
#define SEPG_DIR__WRITE   (SEPG_FILE__WRITE)
 
#define SEPG_DIR__CREATE   (SEPG_FILE__CREATE)
 
#define SEPG_DIR__GETATTR   (SEPG_FILE__GETATTR)
 
#define SEPG_DIR__UNLINK   (SEPG_FILE__UNLINK)
 
#define SEPG_DIR__RENAME   (SEPG_FILE__RENAME)
 
#define SEPG_DIR__SEARCH   (1<<6)
 
#define SEPG_DIR__ADD_NAME   (1<<7)
 
#define SEPG_DIR__REMOVE_NAME   (1<<8)
 
#define SEPG_DIR__RMDIR   (1<<9)
 
#define SEPG_DIR__REPARENT   (1<<10)
 
#define SEPG_LNK_FILE__READ   (SEPG_FILE__READ)
 
#define SEPG_LNK_FILE__WRITE   (SEPG_FILE__WRITE)
 
#define SEPG_LNK_FILE__CREATE   (SEPG_FILE__CREATE)
 
#define SEPG_LNK_FILE__GETATTR   (SEPG_FILE__GETATTR)
 
#define SEPG_LNK_FILE__UNLINK   (SEPG_FILE__UNLINK)
 
#define SEPG_LNK_FILE__RENAME   (SEPG_FILE__RENAME)
 
#define SEPG_CHR_FILE__READ   (SEPG_FILE__READ)
 
#define SEPG_CHR_FILE__WRITE   (SEPG_FILE__WRITE)
 
#define SEPG_CHR_FILE__CREATE   (SEPG_FILE__CREATE)
 
#define SEPG_CHR_FILE__GETATTR   (SEPG_FILE__GETATTR)
 
#define SEPG_CHR_FILE__UNLINK   (SEPG_FILE__UNLINK)
 
#define SEPG_CHR_FILE__RENAME   (SEPG_FILE__RENAME)
 
#define SEPG_BLK_FILE__READ   (SEPG_FILE__READ)
 
#define SEPG_BLK_FILE__WRITE   (SEPG_FILE__WRITE)
 
#define SEPG_BLK_FILE__CREATE   (SEPG_FILE__CREATE)
 
#define SEPG_BLK_FILE__GETATTR   (SEPG_FILE__GETATTR)
 
#define SEPG_BLK_FILE__UNLINK   (SEPG_FILE__UNLINK)
 
#define SEPG_BLK_FILE__RENAME   (SEPG_FILE__RENAME)
 
#define SEPG_SOCK_FILE__READ   (SEPG_FILE__READ)
 
#define SEPG_SOCK_FILE__WRITE   (SEPG_FILE__WRITE)
 
#define SEPG_SOCK_FILE__CREATE   (SEPG_FILE__CREATE)
 
#define SEPG_SOCK_FILE__GETATTR   (SEPG_FILE__GETATTR)
 
#define SEPG_SOCK_FILE__UNLINK   (SEPG_FILE__UNLINK)
 
#define SEPG_SOCK_FILE__RENAME   (SEPG_FILE__RENAME)
 
#define SEPG_FIFO_FILE__READ   (SEPG_FILE__READ)
 
#define SEPG_FIFO_FILE__WRITE   (SEPG_FILE__WRITE)
 
#define SEPG_FIFO_FILE__CREATE   (SEPG_FILE__CREATE)
 
#define SEPG_FIFO_FILE__GETATTR   (SEPG_FILE__GETATTR)
 
#define SEPG_FIFO_FILE__UNLINK   (SEPG_FILE__UNLINK)
 
#define SEPG_FIFO_FILE__RENAME   (SEPG_FILE__RENAME)
 
#define SEPG_DB_DATABASE__CREATE   (1<<0)
 
#define SEPG_DB_DATABASE__DROP   (1<<1)
 
#define SEPG_DB_DATABASE__GETATTR   (1<<2)
 
#define SEPG_DB_DATABASE__SETATTR   (1<<3)
 
#define SEPG_DB_DATABASE__RELABELFROM   (1<<4)
 
#define SEPG_DB_DATABASE__RELABELTO   (1<<5)
 
#define SEPG_DB_DATABASE__ACCESS   (1<<6)
 
#define SEPG_DB_DATABASE__LOAD_MODULE   (1<<7)
 
#define SEPG_DB_SCHEMA__CREATE   (SEPG_DB_DATABASE__CREATE)
 
#define SEPG_DB_SCHEMA__DROP   (SEPG_DB_DATABASE__DROP)
 
#define SEPG_DB_SCHEMA__GETATTR   (SEPG_DB_DATABASE__GETATTR)
 
#define SEPG_DB_SCHEMA__SETATTR   (SEPG_DB_DATABASE__SETATTR)
 
#define SEPG_DB_SCHEMA__RELABELFROM   (SEPG_DB_DATABASE__RELABELFROM)
 
#define SEPG_DB_SCHEMA__RELABELTO   (SEPG_DB_DATABASE__RELABELTO)
 
#define SEPG_DB_SCHEMA__SEARCH   (1<<6)
 
#define SEPG_DB_SCHEMA__ADD_NAME   (1<<7)
 
#define SEPG_DB_SCHEMA__REMOVE_NAME   (1<<8)
 
#define SEPG_DB_TABLE__CREATE   (SEPG_DB_DATABASE__CREATE)
 
#define SEPG_DB_TABLE__DROP   (SEPG_DB_DATABASE__DROP)
 
#define SEPG_DB_TABLE__GETATTR   (SEPG_DB_DATABASE__GETATTR)
 
#define SEPG_DB_TABLE__SETATTR   (SEPG_DB_DATABASE__SETATTR)
 
#define SEPG_DB_TABLE__RELABELFROM   (SEPG_DB_DATABASE__RELABELFROM)
 
#define SEPG_DB_TABLE__RELABELTO   (SEPG_DB_DATABASE__RELABELTO)
 
#define SEPG_DB_TABLE__SELECT   (1<<6)
 
#define SEPG_DB_TABLE__UPDATE   (1<<7)
 
#define SEPG_DB_TABLE__INSERT   (1<<8)
 
#define SEPG_DB_TABLE__DELETE   (1<<9)
 
#define SEPG_DB_TABLE__LOCK   (1<<10)
 
#define SEPG_DB_SEQUENCE__CREATE   (SEPG_DB_DATABASE__CREATE)
 
#define SEPG_DB_SEQUENCE__DROP   (SEPG_DB_DATABASE__DROP)
 
#define SEPG_DB_SEQUENCE__GETATTR   (SEPG_DB_DATABASE__GETATTR)
 
#define SEPG_DB_SEQUENCE__SETATTR   (SEPG_DB_DATABASE__SETATTR)
 
#define SEPG_DB_SEQUENCE__RELABELFROM   (SEPG_DB_DATABASE__RELABELFROM)
 
#define SEPG_DB_SEQUENCE__RELABELTO   (SEPG_DB_DATABASE__RELABELTO)
 
#define SEPG_DB_SEQUENCE__GET_VALUE   (1<<6)
 
#define SEPG_DB_SEQUENCE__NEXT_VALUE   (1<<7)
 
#define SEPG_DB_SEQUENCE__SET_VALUE   (1<<8)
 
#define SEPG_DB_PROCEDURE__CREATE   (SEPG_DB_DATABASE__CREATE)
 
#define SEPG_DB_PROCEDURE__DROP   (SEPG_DB_DATABASE__DROP)
 
#define SEPG_DB_PROCEDURE__GETATTR   (SEPG_DB_DATABASE__GETATTR)
 
#define SEPG_DB_PROCEDURE__SETATTR   (SEPG_DB_DATABASE__SETATTR)
 
#define SEPG_DB_PROCEDURE__RELABELFROM   (SEPG_DB_DATABASE__RELABELFROM)
 
#define SEPG_DB_PROCEDURE__RELABELTO   (SEPG_DB_DATABASE__RELABELTO)
 
#define SEPG_DB_PROCEDURE__EXECUTE   (1<<6)
 
#define SEPG_DB_PROCEDURE__ENTRYPOINT   (1<<7)
 
#define SEPG_DB_PROCEDURE__INSTALL   (1<<8)
 
#define SEPG_DB_COLUMN__CREATE   (SEPG_DB_DATABASE__CREATE)
 
#define SEPG_DB_COLUMN__DROP   (SEPG_DB_DATABASE__DROP)
 
#define SEPG_DB_COLUMN__GETATTR   (SEPG_DB_DATABASE__GETATTR)
 
#define SEPG_DB_COLUMN__SETATTR   (SEPG_DB_DATABASE__SETATTR)
 
#define SEPG_DB_COLUMN__RELABELFROM   (SEPG_DB_DATABASE__RELABELFROM)
 
#define SEPG_DB_COLUMN__RELABELTO   (SEPG_DB_DATABASE__RELABELTO)
 
#define SEPG_DB_COLUMN__SELECT   (1<<6)
 
#define SEPG_DB_COLUMN__UPDATE   (1<<7)
 
#define SEPG_DB_COLUMN__INSERT   (1<<8)
 
#define SEPG_DB_TUPLE__RELABELFROM   (SEPG_DB_DATABASE__RELABELFROM)
 
#define SEPG_DB_TUPLE__RELABELTO   (SEPG_DB_DATABASE__RELABELTO)
 
#define SEPG_DB_TUPLE__SELECT   (SEPG_DB_DATABASE__GETATTR)
 
#define SEPG_DB_TUPLE__UPDATE   (SEPG_DB_DATABASE__SETATTR)
 
#define SEPG_DB_TUPLE__INSERT   (SEPG_DB_DATABASE__CREATE)
 
#define SEPG_DB_TUPLE__DELETE   (SEPG_DB_DATABASE__DROP)
 
#define SEPG_DB_BLOB__CREATE   (SEPG_DB_DATABASE__CREATE)
 
#define SEPG_DB_BLOB__DROP   (SEPG_DB_DATABASE__DROP)
 
#define SEPG_DB_BLOB__GETATTR   (SEPG_DB_DATABASE__GETATTR)
 
#define SEPG_DB_BLOB__SETATTR   (SEPG_DB_DATABASE__SETATTR)
 
#define SEPG_DB_BLOB__RELABELFROM   (SEPG_DB_DATABASE__RELABELFROM)
 
#define SEPG_DB_BLOB__RELABELTO   (SEPG_DB_DATABASE__RELABELTO)
 
#define SEPG_DB_BLOB__READ   (1<<6)
 
#define SEPG_DB_BLOB__WRITE   (1<<7)
 
#define SEPG_DB_BLOB__IMPORT   (1<<8)
 
#define SEPG_DB_BLOB__EXPORT   (1<<9)
 
#define SEPG_DB_LANGUAGE__CREATE   (SEPG_DB_DATABASE__CREATE)
 
#define SEPG_DB_LANGUAGE__DROP   (SEPG_DB_DATABASE__DROP)
 
#define SEPG_DB_LANGUAGE__GETATTR   (SEPG_DB_DATABASE__GETATTR)
 
#define SEPG_DB_LANGUAGE__SETATTR   (SEPG_DB_DATABASE__SETATTR)
 
#define SEPG_DB_LANGUAGE__RELABELFROM   (SEPG_DB_DATABASE__RELABELFROM)
 
#define SEPG_DB_LANGUAGE__RELABELTO   (SEPG_DB_DATABASE__RELABELTO)
 
#define SEPG_DB_LANGUAGE__IMPLEMENT   (1<<6)
 
#define SEPG_DB_LANGUAGE__EXECUTE   (1<<7)
 
#define SEPG_DB_VIEW__CREATE   (SEPG_DB_DATABASE__CREATE)
 
#define SEPG_DB_VIEW__DROP   (SEPG_DB_DATABASE__DROP)
 
#define SEPG_DB_VIEW__GETATTR   (SEPG_DB_DATABASE__GETATTR)
 
#define SEPG_DB_VIEW__SETATTR   (SEPG_DB_DATABASE__SETATTR)
 
#define SEPG_DB_VIEW__RELABELFROM   (SEPG_DB_DATABASE__RELABELFROM)
 
#define SEPG_DB_VIEW__RELABELTO   (SEPG_DB_DATABASE__RELABELTO)
 
#define SEPG_DB_VIEW__EXPAND   (1<<6)
 
#define SEPGSQL_AVC_NOAUDIT   ((void *)(-1))
 

Functions

bool sepgsql_get_permissive (void)
 
bool sepgsql_get_debug_audit (void)
 
bool sepgsql_is_enabled (void)
 
int sepgsql_get_mode (void)
 
int sepgsql_set_mode (int new_mode)
 
bool sepgsql_getenforce (void)
 
void sepgsql_audit_log (bool denied, const char *scontext, const char *tcontext, uint16 tclass, uint32 audited, const char *audit_name)
 
void sepgsql_compute_avd (const char *scontext, const char *tcontext, uint16 tclass, struct av_decision *avd)
 
char * sepgsql_compute_create (const char *scontext, const char *tcontext, uint16 tclass, const char *objname)
 
bool sepgsql_check_perms (const char *scontext, const char *tcontext, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
 
bool sepgsql_avc_check_perms_label (const char *tcontext, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
 
bool sepgsql_avc_check_perms (const ObjectAddress *tobject, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
 
char * sepgsql_avc_trusted_proc (Oid functionId)
 
void sepgsql_avc_init (void)
 
char * sepgsql_get_client_label (void)
 
void sepgsql_init_client_label (void)
 
char * sepgsql_get_label (Oid relOid, Oid objOid, int32 subId)
 
void sepgsql_object_relabel (const ObjectAddress *object, const char *seclabel)
 
bool sepgsql_dml_privileges (List *rangeTabls, bool abort_on_violation)
 
void sepgsql_database_post_create (Oid databaseId, const char *dtemplate)
 
void sepgsql_database_drop (Oid databaseId)
 
void sepgsql_database_relabel (Oid databaseId, const char *seclabel)
 
void sepgsql_database_setattr (Oid databaseId)
 
void sepgsql_schema_post_create (Oid namespaceId)
 
void sepgsql_schema_drop (Oid namespaceId)
 
void sepgsql_schema_relabel (Oid namespaceId, const char *seclabel)
 
void sepgsql_schema_setattr (Oid namespaceId)
 
bool sepgsql_schema_search (Oid namespaceId, bool abort_on_violation)
 
void sepgsql_schema_add_name (Oid namespaceId)
 
void sepgsql_schema_remove_name (Oid namespaceId)
 
void sepgsql_schema_rename (Oid namespaceId)
 
void sepgsql_attribute_post_create (Oid relOid, AttrNumber attnum)
 
void sepgsql_attribute_drop (Oid relOid, AttrNumber attnum)
 
void sepgsql_attribute_relabel (Oid relOid, AttrNumber attnum, const char *seclabel)
 
void sepgsql_attribute_setattr (Oid relOid, AttrNumber attnum)
 
void sepgsql_relation_post_create (Oid relOid)
 
void sepgsql_relation_drop (Oid relOid)
 
void sepgsql_relation_relabel (Oid relOid, const char *seclabel)
 
void sepgsql_relation_setattr (Oid relOid)
 
void sepgsql_proc_post_create (Oid functionId)
 
void sepgsql_proc_drop (Oid functionId)
 
void sepgsql_proc_relabel (Oid functionId, const char *seclabel)
 
void sepgsql_proc_setattr (Oid functionId)
 
void sepgsql_proc_execute (Oid functionId)
 

Macro Definition Documentation

#define SEPG_BLK_FILE__CREATE   (SEPG_FILE__CREATE)

Definition at line 99 of file sepgsql.h.

#define SEPG_BLK_FILE__GETATTR   (SEPG_FILE__GETATTR)

Definition at line 100 of file sepgsql.h.

#define SEPG_BLK_FILE__READ   (SEPG_FILE__READ)

Definition at line 97 of file sepgsql.h.

#define SEPG_BLK_FILE__RENAME   (SEPG_FILE__RENAME)

Definition at line 102 of file sepgsql.h.

#define SEPG_BLK_FILE__UNLINK   (SEPG_FILE__UNLINK)

Definition at line 101 of file sepgsql.h.

#define SEPG_BLK_FILE__WRITE   (SEPG_FILE__WRITE)

Definition at line 98 of file sepgsql.h.

#define SEPG_CHR_FILE__CREATE   (SEPG_FILE__CREATE)

Definition at line 92 of file sepgsql.h.

#define SEPG_CHR_FILE__GETATTR   (SEPG_FILE__GETATTR)

Definition at line 93 of file sepgsql.h.

#define SEPG_CHR_FILE__READ   (SEPG_FILE__READ)

Definition at line 90 of file sepgsql.h.

#define SEPG_CHR_FILE__RENAME   (SEPG_FILE__RENAME)

Definition at line 95 of file sepgsql.h.

#define SEPG_CHR_FILE__UNLINK   (SEPG_FILE__UNLINK)

Definition at line 94 of file sepgsql.h.

#define SEPG_CHR_FILE__WRITE   (SEPG_FILE__WRITE)

Definition at line 91 of file sepgsql.h.

#define SEPG_CLASS_BLK_FILE   5

Definition at line 41 of file sepgsql.h.

#define SEPG_CLASS_CHR_FILE   4

Definition at line 40 of file sepgsql.h.

#define SEPG_CLASS_DB_BLOB   15

Definition at line 51 of file sepgsql.h.

#define SEPG_CLASS_DB_DATABASE   8
#define SEPG_CLASS_DB_LANGUAGE   16

Definition at line 52 of file sepgsql.h.

#define SEPG_CLASS_DB_SEQUENCE   11
#define SEPG_CLASS_DB_TUPLE   14

Definition at line 50 of file sepgsql.h.

#define SEPG_CLASS_DIR   2

Definition at line 38 of file sepgsql.h.

#define SEPG_CLASS_FIFO_FILE   7

Definition at line 43 of file sepgsql.h.

#define SEPG_CLASS_FILE   1

Definition at line 37 of file sepgsql.h.

#define SEPG_CLASS_LNK_FILE   3

Definition at line 39 of file sepgsql.h.

#define SEPG_CLASS_MAX   18

Definition at line 54 of file sepgsql.h.

Referenced by sepgsql_audit_log(), sepgsql_compute_avd(), and sepgsql_compute_create().

#define SEPG_CLASS_PROCESS   0

Definition at line 36 of file sepgsql.h.

Referenced by sepgsql_avc_compute(), sepgsql_fmgr_hook(), and sepgsql_set_client_label().

#define SEPG_CLASS_SOCK_FILE   6

Definition at line 42 of file sepgsql.h.

#define SEPG_DB_BLOB__CREATE   (SEPG_DB_DATABASE__CREATE)

Definition at line 186 of file sepgsql.h.

#define SEPG_DB_BLOB__DROP   (SEPG_DB_DATABASE__DROP)

Definition at line 187 of file sepgsql.h.

#define SEPG_DB_BLOB__EXPORT   (1<<9)

Definition at line 195 of file sepgsql.h.

#define SEPG_DB_BLOB__GETATTR   (SEPG_DB_DATABASE__GETATTR)

Definition at line 188 of file sepgsql.h.

#define SEPG_DB_BLOB__IMPORT   (1<<8)

Definition at line 194 of file sepgsql.h.

#define SEPG_DB_BLOB__READ   (1<<6)

Definition at line 192 of file sepgsql.h.

#define SEPG_DB_BLOB__RELABELFROM   (SEPG_DB_DATABASE__RELABELFROM)

Definition at line 190 of file sepgsql.h.

#define SEPG_DB_BLOB__RELABELTO   (SEPG_DB_DATABASE__RELABELTO)

Definition at line 191 of file sepgsql.h.

#define SEPG_DB_BLOB__SETATTR   (SEPG_DB_DATABASE__SETATTR)

Definition at line 189 of file sepgsql.h.

#define SEPG_DB_BLOB__WRITE   (1<<7)

Definition at line 193 of file sepgsql.h.

#define SEPG_DB_COLUMN__CREATE   (SEPG_DB_DATABASE__CREATE)

Definition at line 169 of file sepgsql.h.

Referenced by sepgsql_attribute_post_create(), and sepgsql_relation_post_create().

#define SEPG_DB_COLUMN__DROP   (SEPG_DB_DATABASE__DROP)

Definition at line 170 of file sepgsql.h.

Referenced by sepgsql_attribute_drop(), and sepgsql_relation_drop().

#define SEPG_DB_COLUMN__GETATTR   (SEPG_DB_DATABASE__GETATTR)

Definition at line 171 of file sepgsql.h.

#define SEPG_DB_COLUMN__INSERT   (1<<8)

Definition at line 177 of file sepgsql.h.

Referenced by check_relation_privileges().

#define SEPG_DB_COLUMN__RELABELFROM   (SEPG_DB_DATABASE__RELABELFROM)

Definition at line 173 of file sepgsql.h.

Referenced by sepgsql_attribute_relabel().

#define SEPG_DB_COLUMN__RELABELTO   (SEPG_DB_DATABASE__RELABELTO)

Definition at line 174 of file sepgsql.h.

#define SEPG_DB_COLUMN__SELECT   (1<<6)

Definition at line 175 of file sepgsql.h.

Referenced by check_relation_privileges().

#define SEPG_DB_COLUMN__SETATTR   (SEPG_DB_DATABASE__SETATTR)

Definition at line 172 of file sepgsql.h.

Referenced by sepgsql_attribute_relabel(), and sepgsql_attribute_setattr().

#define SEPG_DB_COLUMN__UPDATE   (1<<7)

Definition at line 176 of file sepgsql.h.

Referenced by check_relation_privileges().

#define SEPG_DB_DATABASE__ACCESS   (1<<6)

Definition at line 124 of file sepgsql.h.

#define SEPG_DB_DATABASE__CREATE   (1<<0)

Definition at line 118 of file sepgsql.h.

Referenced by sepgsql_database_post_create(), and sepgsql_relation_post_create().

#define SEPG_DB_DATABASE__DROP   (1<<1)

Definition at line 119 of file sepgsql.h.

Referenced by sepgsql_database_drop().

#define SEPG_DB_DATABASE__GETATTR   (1<<2)

Definition at line 120 of file sepgsql.h.

Referenced by sepgsql_database_post_create().

#define SEPG_DB_DATABASE__LOAD_MODULE   (1<<7)

Definition at line 125 of file sepgsql.h.

#define SEPG_DB_DATABASE__RELABELFROM   (1<<4)

Definition at line 122 of file sepgsql.h.

Referenced by sepgsql_database_relabel().

#define SEPG_DB_DATABASE__RELABELTO   (1<<5)

Definition at line 123 of file sepgsql.h.

Referenced by sepgsql_database_relabel().

#define SEPG_DB_DATABASE__SETATTR   (1<<3)

Definition at line 121 of file sepgsql.h.

Referenced by sepgsql_database_relabel(), and sepgsql_database_setattr().

#define SEPG_DB_LANGUAGE__CREATE   (SEPG_DB_DATABASE__CREATE)

Definition at line 197 of file sepgsql.h.

#define SEPG_DB_LANGUAGE__DROP   (SEPG_DB_DATABASE__DROP)

Definition at line 198 of file sepgsql.h.

#define SEPG_DB_LANGUAGE__EXECUTE   (1<<7)

Definition at line 204 of file sepgsql.h.

#define SEPG_DB_LANGUAGE__GETATTR   (SEPG_DB_DATABASE__GETATTR)

Definition at line 199 of file sepgsql.h.

#define SEPG_DB_LANGUAGE__IMPLEMENT   (1<<6)

Definition at line 203 of file sepgsql.h.

#define SEPG_DB_LANGUAGE__RELABELFROM   (SEPG_DB_DATABASE__RELABELFROM)

Definition at line 201 of file sepgsql.h.

#define SEPG_DB_LANGUAGE__RELABELTO   (SEPG_DB_DATABASE__RELABELTO)

Definition at line 202 of file sepgsql.h.

#define SEPG_DB_LANGUAGE__SETATTR   (SEPG_DB_DATABASE__SETATTR)

Definition at line 200 of file sepgsql.h.

#define SEPG_DB_PROCEDURE__CREATE   (SEPG_DB_DATABASE__CREATE)

Definition at line 159 of file sepgsql.h.

Referenced by sepgsql_proc_post_create().

#define SEPG_DB_PROCEDURE__DROP   (SEPG_DB_DATABASE__DROP)

Definition at line 160 of file sepgsql.h.

Referenced by sepgsql_proc_drop().

#define SEPG_DB_PROCEDURE__ENTRYPOINT   (1<<7)

Definition at line 166 of file sepgsql.h.

Referenced by sepgsql_fmgr_hook(), and sepgsql_needs_fmgr_hook().

#define SEPG_DB_PROCEDURE__EXECUTE   (1<<6)

Definition at line 165 of file sepgsql.h.

Referenced by sepgsql_needs_fmgr_hook(), and sepgsql_proc_execute().

#define SEPG_DB_PROCEDURE__GETATTR   (SEPG_DB_DATABASE__GETATTR)

Definition at line 161 of file sepgsql.h.

#define SEPG_DB_PROCEDURE__INSTALL   (1<<8)

Definition at line 167 of file sepgsql.h.

Referenced by sepgsql_proc_post_create(), and sepgsql_proc_setattr().

#define SEPG_DB_PROCEDURE__RELABELFROM   (SEPG_DB_DATABASE__RELABELFROM)

Definition at line 163 of file sepgsql.h.

Referenced by sepgsql_proc_relabel().

#define SEPG_DB_PROCEDURE__RELABELTO   (SEPG_DB_DATABASE__RELABELTO)

Definition at line 164 of file sepgsql.h.

Referenced by sepgsql_attribute_relabel(), and sepgsql_proc_relabel().

#define SEPG_DB_PROCEDURE__SETATTR   (SEPG_DB_DATABASE__SETATTR)

Definition at line 162 of file sepgsql.h.

Referenced by sepgsql_proc_relabel(), and sepgsql_proc_setattr().

#define SEPG_DB_SCHEMA__ADD_NAME   (1<<7)
#define SEPG_DB_SCHEMA__CREATE   (SEPG_DB_DATABASE__CREATE)

Definition at line 127 of file sepgsql.h.

Referenced by sepgsql_schema_post_create().

#define SEPG_DB_SCHEMA__DROP   (SEPG_DB_DATABASE__DROP)

Definition at line 128 of file sepgsql.h.

Referenced by sepgsql_schema_drop().

#define SEPG_DB_SCHEMA__GETATTR   (SEPG_DB_DATABASE__GETATTR)

Definition at line 129 of file sepgsql.h.

#define SEPG_DB_SCHEMA__RELABELFROM   (SEPG_DB_DATABASE__RELABELFROM)

Definition at line 131 of file sepgsql.h.

Referenced by sepgsql_schema_relabel().

#define SEPG_DB_SCHEMA__RELABELTO   (SEPG_DB_DATABASE__RELABELTO)

Definition at line 132 of file sepgsql.h.

Referenced by sepgsql_schema_relabel().

#define SEPG_DB_SCHEMA__REMOVE_NAME   (1<<8)
#define SEPG_DB_SCHEMA__SEARCH   (1<<6)

Definition at line 133 of file sepgsql.h.

Referenced by sepgsql_schema_search().

#define SEPG_DB_SCHEMA__SETATTR   (SEPG_DB_DATABASE__SETATTR)

Definition at line 130 of file sepgsql.h.

Referenced by sepgsql_schema_relabel(), and sepgsql_schema_setattr().

#define SEPG_DB_SEQUENCE__CREATE   (SEPG_DB_DATABASE__CREATE)

Definition at line 149 of file sepgsql.h.

#define SEPG_DB_SEQUENCE__DROP   (SEPG_DB_DATABASE__DROP)

Definition at line 150 of file sepgsql.h.

#define SEPG_DB_SEQUENCE__GET_VALUE   (1<<6)

Definition at line 155 of file sepgsql.h.

Referenced by check_relation_privileges().

#define SEPG_DB_SEQUENCE__GETATTR   (SEPG_DB_DATABASE__GETATTR)

Definition at line 151 of file sepgsql.h.

#define SEPG_DB_SEQUENCE__NEXT_VALUE   (1<<7)

Definition at line 156 of file sepgsql.h.

#define SEPG_DB_SEQUENCE__RELABELFROM   (SEPG_DB_DATABASE__RELABELFROM)

Definition at line 153 of file sepgsql.h.

#define SEPG_DB_SEQUENCE__RELABELTO   (SEPG_DB_DATABASE__RELABELTO)

Definition at line 154 of file sepgsql.h.

#define SEPG_DB_SEQUENCE__SET_VALUE   (1<<8)

Definition at line 157 of file sepgsql.h.

#define SEPG_DB_SEQUENCE__SETATTR   (SEPG_DB_DATABASE__SETATTR)

Definition at line 152 of file sepgsql.h.

#define SEPG_DB_TABLE__CREATE   (SEPG_DB_DATABASE__CREATE)

Definition at line 137 of file sepgsql.h.

#define SEPG_DB_TABLE__DELETE   (1<<9)

Definition at line 146 of file sepgsql.h.

Referenced by check_relation_privileges(), and sepgsql_dml_privileges().

#define SEPG_DB_TABLE__DROP   (SEPG_DB_DATABASE__DROP)

Definition at line 138 of file sepgsql.h.

Referenced by sepgsql_relation_drop().

#define SEPG_DB_TABLE__GETATTR   (SEPG_DB_DATABASE__GETATTR)

Definition at line 139 of file sepgsql.h.

#define SEPG_DB_TABLE__INSERT   (1<<8)

Definition at line 145 of file sepgsql.h.

Referenced by check_relation_privileges(), and sepgsql_dml_privileges().

#define SEPG_DB_TABLE__LOCK   (1<<10)

Definition at line 147 of file sepgsql.h.

Referenced by sepgsql_dml_privileges().

#define SEPG_DB_TABLE__RELABELFROM   (SEPG_DB_DATABASE__RELABELFROM)

Definition at line 141 of file sepgsql.h.

Referenced by sepgsql_relation_relabel().

#define SEPG_DB_TABLE__RELABELTO   (SEPG_DB_DATABASE__RELABELTO)

Definition at line 142 of file sepgsql.h.

Referenced by sepgsql_relation_relabel().

#define SEPG_DB_TABLE__SELECT   (1<<6)

Definition at line 143 of file sepgsql.h.

Referenced by check_relation_privileges(), and sepgsql_dml_privileges().

#define SEPG_DB_TABLE__SETATTR   (SEPG_DB_DATABASE__SETATTR)

Definition at line 140 of file sepgsql.h.

Referenced by sepgsql_relation_relabel(), and sepgsql_relation_setattr().

#define SEPG_DB_TABLE__UPDATE   (1<<7)

Definition at line 144 of file sepgsql.h.

Referenced by check_relation_privileges(), and sepgsql_dml_privileges().

#define SEPG_DB_TUPLE__DELETE   (SEPG_DB_DATABASE__DROP)

Definition at line 184 of file sepgsql.h.

#define SEPG_DB_TUPLE__INSERT   (SEPG_DB_DATABASE__CREATE)

Definition at line 183 of file sepgsql.h.

#define SEPG_DB_TUPLE__RELABELFROM   (SEPG_DB_DATABASE__RELABELFROM)

Definition at line 179 of file sepgsql.h.

#define SEPG_DB_TUPLE__RELABELTO   (SEPG_DB_DATABASE__RELABELTO)

Definition at line 180 of file sepgsql.h.

#define SEPG_DB_TUPLE__SELECT   (SEPG_DB_DATABASE__GETATTR)

Definition at line 181 of file sepgsql.h.

#define SEPG_DB_TUPLE__UPDATE   (SEPG_DB_DATABASE__SETATTR)

Definition at line 182 of file sepgsql.h.

#define SEPG_DB_VIEW__CREATE   (SEPG_DB_DATABASE__CREATE)

Definition at line 206 of file sepgsql.h.

#define SEPG_DB_VIEW__DROP   (SEPG_DB_DATABASE__DROP)

Definition at line 207 of file sepgsql.h.

#define SEPG_DB_VIEW__EXPAND   (1<<6)

Definition at line 212 of file sepgsql.h.

Referenced by check_relation_privileges().

#define SEPG_DB_VIEW__GETATTR   (SEPG_DB_DATABASE__GETATTR)

Definition at line 208 of file sepgsql.h.

#define SEPG_DB_VIEW__RELABELFROM   (SEPG_DB_DATABASE__RELABELFROM)

Definition at line 210 of file sepgsql.h.

#define SEPG_DB_VIEW__RELABELTO   (SEPG_DB_DATABASE__RELABELTO)

Definition at line 211 of file sepgsql.h.

#define SEPG_DB_VIEW__SETATTR   (SEPG_DB_DATABASE__SETATTR)

Definition at line 209 of file sepgsql.h.

#define SEPG_DIR__ADD_NAME   (1<<7)

Definition at line 78 of file sepgsql.h.

#define SEPG_DIR__CREATE   (SEPG_FILE__CREATE)

Definition at line 73 of file sepgsql.h.

#define SEPG_DIR__GETATTR   (SEPG_FILE__GETATTR)

Definition at line 74 of file sepgsql.h.

#define SEPG_DIR__READ   (SEPG_FILE__READ)

Definition at line 71 of file sepgsql.h.

#define SEPG_DIR__REMOVE_NAME   (1<<8)

Definition at line 79 of file sepgsql.h.

#define SEPG_DIR__RENAME   (SEPG_FILE__RENAME)

Definition at line 76 of file sepgsql.h.

#define SEPG_DIR__REPARENT   (1<<10)

Definition at line 81 of file sepgsql.h.

#define SEPG_DIR__RMDIR   (1<<9)

Definition at line 80 of file sepgsql.h.

#define SEPG_DIR__SEARCH   (1<<6)

Definition at line 77 of file sepgsql.h.

#define SEPG_DIR__UNLINK   (SEPG_FILE__UNLINK)

Definition at line 75 of file sepgsql.h.

#define SEPG_DIR__WRITE   (SEPG_FILE__WRITE)

Definition at line 72 of file sepgsql.h.

#define SEPG_FIFO_FILE__CREATE   (SEPG_FILE__CREATE)

Definition at line 113 of file sepgsql.h.

#define SEPG_FIFO_FILE__GETATTR   (SEPG_FILE__GETATTR)

Definition at line 114 of file sepgsql.h.

#define SEPG_FIFO_FILE__READ   (SEPG_FILE__READ)

Definition at line 111 of file sepgsql.h.

#define SEPG_FIFO_FILE__RENAME   (SEPG_FILE__RENAME)

Definition at line 116 of file sepgsql.h.

#define SEPG_FIFO_FILE__UNLINK   (SEPG_FILE__UNLINK)

Definition at line 115 of file sepgsql.h.

#define SEPG_FIFO_FILE__WRITE   (SEPG_FILE__WRITE)

Definition at line 112 of file sepgsql.h.

#define SEPG_FILE__APPEND   (1<<6)

Definition at line 69 of file sepgsql.h.

#define SEPG_FILE__CREATE   (1<<2)

Definition at line 65 of file sepgsql.h.

#define SEPG_FILE__GETATTR   (1<<3)

Definition at line 66 of file sepgsql.h.

#define SEPG_FILE__READ   (1<<0)

Definition at line 63 of file sepgsql.h.

#define SEPG_FILE__RENAME   (1<<5)

Definition at line 68 of file sepgsql.h.

#define SEPG_FILE__UNLINK   (1<<4)

Definition at line 67 of file sepgsql.h.

#define SEPG_FILE__WRITE   (1<<1)

Definition at line 64 of file sepgsql.h.

#define SEPG_LNK_FILE__CREATE   (SEPG_FILE__CREATE)

Definition at line 85 of file sepgsql.h.

#define SEPG_LNK_FILE__GETATTR   (SEPG_FILE__GETATTR)

Definition at line 86 of file sepgsql.h.

#define SEPG_LNK_FILE__READ   (SEPG_FILE__READ)

Definition at line 83 of file sepgsql.h.

#define SEPG_LNK_FILE__RENAME   (SEPG_FILE__RENAME)

Definition at line 88 of file sepgsql.h.

#define SEPG_LNK_FILE__UNLINK   (SEPG_FILE__UNLINK)

Definition at line 87 of file sepgsql.h.

#define SEPG_LNK_FILE__WRITE   (SEPG_FILE__WRITE)

Definition at line 84 of file sepgsql.h.

#define SEPG_PROCESS__DYNTRANSITION   (1<<1)

Definition at line 60 of file sepgsql.h.

Referenced by sepgsql_set_client_label().

#define SEPG_PROCESS__SETCURRENT   (1<<2)

Definition at line 61 of file sepgsql.h.

Referenced by sepgsql_set_client_label().

#define SEPG_PROCESS__TRANSITION   (1<<0)

Definition at line 59 of file sepgsql.h.

Referenced by sepgsql_fmgr_hook().

#define SEPG_SOCK_FILE__CREATE   (SEPG_FILE__CREATE)

Definition at line 106 of file sepgsql.h.

#define SEPG_SOCK_FILE__GETATTR   (SEPG_FILE__GETATTR)

Definition at line 107 of file sepgsql.h.

#define SEPG_SOCK_FILE__READ   (SEPG_FILE__READ)

Definition at line 104 of file sepgsql.h.

#define SEPG_SOCK_FILE__RENAME   (SEPG_FILE__RENAME)

Definition at line 109 of file sepgsql.h.

#define SEPG_SOCK_FILE__UNLINK   (SEPG_FILE__UNLINK)

Definition at line 108 of file sepgsql.h.

#define SEPG_SOCK_FILE__WRITE   (SEPG_FILE__WRITE)

Definition at line 105 of file sepgsql.h.

#define SEPGSQL_AVC_NOAUDIT   ((void *)(-1))

Definition at line 255 of file sepgsql.h.

Referenced by sepgsql_avc_check_perms_label(), and sepgsql_needs_fmgr_hook().

#define SEPGSQL_MODE_DEFAULT   1

Definition at line 28 of file sepgsql.h.

Referenced by sepgsql_client_auth(), and sepgsql_getenforce().

#define SEPGSQL_MODE_DISABLED   4

Definition at line 31 of file sepgsql.h.

Referenced by _PG_init(), and sepgsql_is_enabled().

#define SEPGSQL_MODE_INTERNAL   3

Definition at line 30 of file sepgsql.h.

Referenced by sepgsql_avc_check_perms_label(), and sepgsql_check_perms().

#define SEPGSQL_MODE_PERMISSIVE   2

Definition at line 29 of file sepgsql.h.

Referenced by sepgsql_client_auth().

Function Documentation

void sepgsql_attribute_drop ( Oid  relOid,
AttrNumber  attnum 
)

Definition at line 134 of file relation.c.

References ObjectAddress::classId, get_rel_relkind(), getObjectIdentity(), pfree(), RelationRelationId, RELKIND_RELATION, SEPG_CLASS_DB_COLUMN, SEPG_DB_COLUMN__DROP, and sepgsql_avc_check_perms().

Referenced by sepgsql_object_access().

135 {
136  ObjectAddress object;
137  char *audit_name;
138 
139  if (get_rel_relkind(relOid) != RELKIND_RELATION)
140  return;
141 
142  /*
143  * check db_column:{drop} permission
144  */
145  object.classId = RelationRelationId;
146  object.objectId = relOid;
147  object.objectSubId = attnum;
148  audit_name = getObjectIdentity(&object);
149 
150  sepgsql_avc_check_perms(&object,
153  audit_name,
154  true);
155  pfree(audit_name);
156 }
#define SEPG_CLASS_DB_COLUMN
Definition: sepgsql.h:49
char get_rel_relkind(Oid relid)
Definition: lsyscache.c:1769
#define RelationRelationId
Definition: pg_class.h:29
bool sepgsql_avc_check_perms(const ObjectAddress *tobject, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:428
void pfree(void *pointer)
Definition: mcxt.c:992
char * getObjectIdentity(const ObjectAddress *object)
#define SEPG_DB_COLUMN__DROP
Definition: sepgsql.h:170
#define RELKIND_RELATION
Definition: pg_class.h:160
void sepgsql_attribute_post_create ( Oid  relOid,
AttrNumber  attnum 
)

Definition at line 45 of file relation.c.

References AccessShareLock, Anum_pg_attribute_attnum, Anum_pg_attribute_attrelid, appendStringInfo(), AttributeRelationId, AttributeRelidNumIndexId, BTEqualStrategyNumber, StringInfoData::data, elog, ERROR, get_rel_relkind(), getObjectIdentity(), GETSTRUCT, heap_close, heap_open(), HeapTupleIsValid, initStringInfo(), Int16GetDatum, NameStr, ObjectIdGetDatum, pfree(), quote_identifier(), RelationRelationId, RELKIND_RELATION, ScanKeyInit(), SEPG_CLASS_DB_COLUMN, SEPG_DB_COLUMN__CREATE, sepgsql_avc_check_perms_label(), sepgsql_compute_create(), sepgsql_get_client_label(), sepgsql_get_label(), SEPGSQL_LABEL_TAG, SetSecurityLabel(), SnapshotSelf, systable_beginscan(), systable_endscan(), and systable_getnext().

Referenced by sepgsql_object_access().

46 {
47  Relation rel;
48  ScanKeyData skey[2];
49  SysScanDesc sscan;
50  HeapTuple tuple;
51  char *scontext;
52  char *tcontext;
53  char *ncontext;
54  ObjectAddress object;
55  Form_pg_attribute attForm;
56  StringInfoData audit_name;
57 
58  /*
59  * Only attributes within regular relation have individual security
60  * labels.
61  */
62  if (get_rel_relkind(relOid) != RELKIND_RELATION)
63  return;
64 
65  /*
66  * Compute a default security label of the new column underlying the
67  * specified relation, and check permission to create it.
68  */
70 
71  ScanKeyInit(&skey[0],
73  BTEqualStrategyNumber, F_OIDEQ,
74  ObjectIdGetDatum(relOid));
75  ScanKeyInit(&skey[1],
77  BTEqualStrategyNumber, F_INT2EQ,
78  Int16GetDatum(attnum));
79 
81  SnapshotSelf, 2, &skey[0]);
82 
83  tuple = systable_getnext(sscan);
84  if (!HeapTupleIsValid(tuple))
85  elog(ERROR, "catalog lookup failed for column %d of relation %u",
86  attnum, relOid);
87 
88  attForm = (Form_pg_attribute) GETSTRUCT(tuple);
89 
90  scontext = sepgsql_get_client_label();
91  tcontext = sepgsql_get_label(RelationRelationId, relOid, 0);
92  ncontext = sepgsql_compute_create(scontext, tcontext,
94  NameStr(attForm->attname));
95 
96  /*
97  * check db_column:{create} permission
98  */
99  object.classId = RelationRelationId;
100  object.objectId = relOid;
101  object.objectSubId = 0;
102 
103  initStringInfo(&audit_name);
104  appendStringInfo(&audit_name, "%s.%s",
105  getObjectIdentity(&object),
106  quote_identifier(NameStr(attForm->attname)));
110  audit_name.data,
111  true);
112 
113  /*
114  * Assign the default security label on a new procedure
115  */
116  object.classId = RelationRelationId;
117  object.objectId = relOid;
118  object.objectSubId = attnum;
119  SetSecurityLabel(&object, SEPGSQL_LABEL_TAG, ncontext);
120 
121  systable_endscan(sscan);
123 
124  pfree(tcontext);
125  pfree(ncontext);
126 }
#define AttributeRelidNumIndexId
Definition: indexing.h:94
bool sepgsql_avc_check_perms_label(const char *tcontext, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:346
#define Anum_pg_attribute_attrelid
Definition: pg_attribute.h:192
void systable_endscan(SysScanDesc sysscan)
Definition: genam.c:493
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
#define SEPG_CLASS_DB_COLUMN
Definition: sepgsql.h:49
void SetSecurityLabel(const ObjectAddress *object, const char *provider, const char *label)
Definition: seclabel.c:327
const char * quote_identifier(const char *ident)
Definition: ruleutils.c:9968
#define Anum_pg_attribute_attnum
Definition: pg_attribute.h:197
char get_rel_relkind(Oid relid)
Definition: lsyscache.c:1769
#define RelationRelationId
Definition: pg_class.h:29
char * sepgsql_get_label(Oid classId, Oid objectId, int32 subId)
Definition: label.c:455
#define Int16GetDatum(X)
Definition: postgres.h:459
#define AccessShareLock
Definition: lockdefs.h:36
#define AttributeRelationId
Definition: pg_attribute.h:33
#define heap_close(r, l)
Definition: heapam.h:97
SysScanDesc systable_beginscan(Relation heapRelation, Oid indexId, bool indexOK, Snapshot snapshot, int nkeys, ScanKey key)
Definition: genam.c:322
HeapTuple systable_getnext(SysScanDesc sysscan)
Definition: genam.c:410
void pfree(void *pointer)
Definition: mcxt.c:992
void appendStringInfo(StringInfo str, const char *fmt,...)
Definition: stringinfo.c:110
#define ObjectIdGetDatum(X)
Definition: postgres.h:515
#define ERROR
Definition: elog.h:43
char * getObjectIdentity(const ObjectAddress *object)
#define SEPGSQL_LABEL_TAG
Definition: sepgsql.h:23
FormData_pg_attribute * Form_pg_attribute
Definition: pg_attribute.h:184
#define SnapshotSelf
Definition: tqual.h:27
void initStringInfo(StringInfo str)
Definition: stringinfo.c:65
Relation heap_open(Oid relationId, LOCKMODE lockmode)
Definition: heapam.c:1287
#define SEPG_DB_COLUMN__CREATE
Definition: sepgsql.h:169
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
char * sepgsql_get_client_label(void)
Definition: label.c:83
char * sepgsql_compute_create(const char *scontext, const char *tcontext, uint16 tclass, const char *objname)
Definition: selinux.c:837
#define NameStr(name)
Definition: c.h:495
void ScanKeyInit(ScanKey entry, AttrNumber attributeNumber, StrategyNumber strategy, RegProcedure procedure, Datum argument)
Definition: scankey.c:76
#define elog
Definition: elog.h:219
#define RELKIND_RELATION
Definition: pg_class.h:160
#define BTEqualStrategyNumber
Definition: stratnum.h:31
void sepgsql_attribute_relabel ( Oid  relOid,
AttrNumber  attnum,
const char *  seclabel 
)

Definition at line 165 of file relation.c.

References ereport, errcode(), errmsg(), ERROR, get_rel_relkind(), getObjectIdentity(), pfree(), RelationRelationId, RELKIND_RELATION, SEPG_CLASS_DB_COLUMN, SEPG_DB_COLUMN__RELABELFROM, SEPG_DB_COLUMN__SETATTR, SEPG_DB_PROCEDURE__RELABELTO, sepgsql_avc_check_perms(), and sepgsql_avc_check_perms_label().

Referenced by sepgsql_object_relabel().

167 {
168  ObjectAddress object;
169  char *audit_name;
170 
171  if (get_rel_relkind(relOid) != RELKIND_RELATION)
172  ereport(ERROR,
173  (errcode(ERRCODE_WRONG_OBJECT_TYPE),
174  errmsg("cannot set security label on non-regular columns")));
175 
176  object.classId = RelationRelationId;
177  object.objectId = relOid;
178  object.objectSubId = attnum;
179  audit_name = getObjectIdentity(&object);
180 
181  /*
182  * check db_column:{setattr relabelfrom} permission
183  */
184  sepgsql_avc_check_perms(&object,
188  audit_name,
189  true);
190 
191  /*
192  * check db_column:{relabelto} permission
193  */
197  audit_name,
198  true);
199  pfree(audit_name);
200 }
bool sepgsql_avc_check_perms_label(const char *tcontext, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:346
#define SEPG_CLASS_DB_COLUMN
Definition: sepgsql.h:49
#define SEPG_DB_COLUMN__SETATTR
Definition: sepgsql.h:172
char get_rel_relkind(Oid relid)
Definition: lsyscache.c:1769
#define RelationRelationId
Definition: pg_class.h:29
bool sepgsql_avc_check_perms(const ObjectAddress *tobject, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:428
int errcode(int sqlerrcode)
Definition: elog.c:575
#define SEPG_DB_COLUMN__RELABELFROM
Definition: sepgsql.h:173
void pfree(void *pointer)
Definition: mcxt.c:992
#define ERROR
Definition: elog.h:43
char * getObjectIdentity(const ObjectAddress *object)
#define SEPG_DB_PROCEDURE__RELABELTO
Definition: sepgsql.h:164
#define ereport(elevel, rest)
Definition: elog.h:122
int errmsg(const char *fmt,...)
Definition: elog.c:797
#define RELKIND_RELATION
Definition: pg_class.h:160
void sepgsql_attribute_setattr ( Oid  relOid,
AttrNumber  attnum 
)

Definition at line 208 of file relation.c.

References ObjectAddress::classId, get_rel_relkind(), getObjectIdentity(), pfree(), RelationRelationId, RELKIND_RELATION, SEPG_CLASS_DB_COLUMN, SEPG_DB_COLUMN__SETATTR, and sepgsql_avc_check_perms().

Referenced by sepgsql_object_access().

209 {
210  ObjectAddress object;
211  char *audit_name;
212 
213  if (get_rel_relkind(relOid) != RELKIND_RELATION)
214  return;
215 
216  /*
217  * check db_column:{setattr} permission
218  */
219  object.classId = RelationRelationId;
220  object.objectId = relOid;
221  object.objectSubId = attnum;
222  audit_name = getObjectIdentity(&object);
223 
224  sepgsql_avc_check_perms(&object,
227  audit_name,
228  true);
229  pfree(audit_name);
230 }
#define SEPG_CLASS_DB_COLUMN
Definition: sepgsql.h:49
#define SEPG_DB_COLUMN__SETATTR
Definition: sepgsql.h:172
char get_rel_relkind(Oid relid)
Definition: lsyscache.c:1769
#define RelationRelationId
Definition: pg_class.h:29
bool sepgsql_avc_check_perms(const ObjectAddress *tobject, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:428
void pfree(void *pointer)
Definition: mcxt.c:992
char * getObjectIdentity(const ObjectAddress *object)
#define RELKIND_RELATION
Definition: pg_class.h:160
void sepgsql_audit_log ( bool  denied,
const char *  scontext,
const char *  tcontext,
uint16  tclass,
uint32  audited,
const char *  audit_name 
)

Definition at line 677 of file selinux.c.

References appendStringInfo(), Assert, av_name, buf, class_name, StringInfoData::data, ereport, errmsg(), i, initStringInfo(), LOG, selinux_catalog, and SEPG_CLASS_MAX.

Referenced by sepgsql_avc_check_perms_label(), and sepgsql_check_perms().

683 {
685  const char *class_name;
686  const char *av_name;
687  int i;
688 
689  /* lookup name of the object class */
690  Assert(tclass < SEPG_CLASS_MAX);
691  class_name = selinux_catalog[tclass].class_name;
692 
693  /* lookup name of the permissions */
694  initStringInfo(&buf);
695  appendStringInfo(&buf, "%s {",
696  (denied ? "denied" : "allowed"));
697  for (i = 0; selinux_catalog[tclass].av[i].av_name; i++)
698  {
699  if (audited & (1UL << i))
700  {
701  av_name = selinux_catalog[tclass].av[i].av_name;
702  appendStringInfo(&buf, " %s", av_name);
703  }
704  }
705  appendStringInfo(&buf, " }");
706 
707  /*
708  * Call external audit module, if loaded
709  */
710  appendStringInfo(&buf, " scontext=%s tcontext=%s tclass=%s",
711  scontext, tcontext, class_name);
712  if (audit_name)
713  appendStringInfo(&buf, " name=\"%s\"", audit_name);
714 
715  ereport(LOG, (errmsg("SELinux: %s", buf.data)));
716 }
#define SEPG_CLASS_MAX
Definition: sepgsql.h:54
const char * av_name
Definition: selinux.c:36
#define LOG
Definition: elog.h:26
void appendStringInfo(StringInfo str, const char *fmt,...)
Definition: stringinfo.c:110
static char * buf
Definition: pg_test_fsync.c:65
#define ereport(elevel, rest)
Definition: elog.h:122
void initStringInfo(StringInfo str)
Definition: stringinfo.c:65
static struct @18 selinux_catalog[]
#define Assert(condition)
Definition: c.h:671
const char * class_name
Definition: selinux.c:32
int errmsg(const char *fmt,...)
Definition: elog.c:797
int i
bool sepgsql_avc_check_perms ( const ObjectAddress tobject,
uint16  tclass,
uint32  required,
const char *  audit_name,
bool  abort_on_violation 
)

Definition at line 428 of file uavc.c.

References GetSecurityLabel(), pfree(), sepgsql_avc_check_perms_label(), and SEPGSQL_LABEL_TAG.

Referenced by check_relation_privileges(), check_schema_perms(), sepgsql_attribute_drop(), sepgsql_attribute_relabel(), sepgsql_attribute_setattr(), sepgsql_database_drop(), sepgsql_database_relabel(), sepgsql_database_setattr(), sepgsql_fmgr_hook(), sepgsql_needs_fmgr_hook(), sepgsql_proc_drop(), sepgsql_proc_execute(), sepgsql_proc_post_create(), sepgsql_proc_relabel(), sepgsql_proc_setattr(), sepgsql_relation_drop(), sepgsql_relation_post_create(), sepgsql_relation_relabel(), sepgsql_relation_setattr(), sepgsql_schema_drop(), and sepgsql_schema_relabel().

432 {
433  char *tcontext = GetSecurityLabel(tobject, SEPGSQL_LABEL_TAG);
434  bool rc;
435 
436  rc = sepgsql_avc_check_perms_label(tcontext,
437  tclass, required,
438  audit_name, abort_on_violation);
439  if (tcontext)
440  pfree(tcontext);
441 
442  return rc;
443 }
void pfree(void *pointer)
Definition: mcxt.c:992
char * GetSecurityLabel(const ObjectAddress *object, const char *provider)
Definition: seclabel.c:195
#define SEPGSQL_LABEL_TAG
Definition: sepgsql.h:23
bool sepgsql_avc_check_perms_label(const char *tcontext, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:346
bool sepgsql_avc_check_perms_label ( const char *  tcontext,
uint16  tclass,
uint32  required,
const char *  audit_name,
bool  abort_on_violation 
)

Definition at line 346 of file uavc.c.

References avc_cache::allowed, avc_cache::auditallow, avc_cache::auditdeny, ereport, errcode(), errmsg(), ERROR, avc_cache::permissive, avc_cache::scontext, sepgsql_audit_log(), sepgsql_avc_check_valid(), sepgsql_avc_lookup(), SEPGSQL_AVC_NOAUDIT, sepgsql_avc_unlabeled(), sepgsql_get_client_label(), sepgsql_get_debug_audit(), sepgsql_get_mode(), sepgsql_getenforce(), SEPGSQL_MODE_INTERNAL, avc_cache::tclass, avc_cache::tcontext, and avc_cache::tcontext_is_valid.

Referenced by sepgsql_attribute_post_create(), sepgsql_attribute_relabel(), sepgsql_avc_check_perms(), sepgsql_database_post_create(), sepgsql_database_relabel(), sepgsql_fmgr_hook(), sepgsql_proc_post_create(), sepgsql_proc_relabel(), sepgsql_relation_post_create(), sepgsql_relation_relabel(), sepgsql_schema_post_create(), sepgsql_schema_relabel(), and sepgsql_set_client_label().

350 {
351  char *scontext = sepgsql_get_client_label();
352  avc_cache *cache;
353  uint32 denied;
354  uint32 audited;
355  bool result;
356 
358  do
359  {
360  result = true;
361 
362  /*
363  * If the target object is unlabeled, we perform the check using the
364  * label supplied by sepgsql_avc_unlabeled().
365  */
366  if (tcontext)
367  cache = sepgsql_avc_lookup(scontext, tcontext, tclass);
368  else
369  cache = sepgsql_avc_lookup(scontext,
370  sepgsql_avc_unlabeled(), tclass);
371 
372  denied = required & ~cache->allowed;
373 
374  /*
375  * Compute permissions to be audited
376  */
378  audited = (denied ? (denied & ~0) : (required & ~0));
379  else
380  audited = denied ? (denied & cache->auditdeny)
381  : (required & cache->auditallow);
382 
383  if (denied)
384  {
385  /*
386  * In permissive mode or permissive domain, violated permissions
387  * shall be audited to the log files at once, and then implicitly
388  * allowed to avoid a flood of access denied logs, because the
389  * purpose of permissive mode/domain is to collect a violation log
390  * that will make it possible to fix up the security policy.
391  */
392  if (!sepgsql_getenforce() || cache->permissive)
393  cache->allowed |= required;
394  else
395  result = false;
396  }
397  } while (!sepgsql_avc_check_valid());
398 
399  /*
400  * In the case when we have something auditable actions here,
401  * sepgsql_audit_log shall be called with text representation of security
402  * labels for both of subject and object. It records this access
403  * violation, so DBA will be able to find out unexpected security problems
404  * later.
405  */
406  if (audited != 0 &&
407  audit_name != SEPGSQL_AVC_NOAUDIT &&
409  {
410  sepgsql_audit_log(denied != 0,
411  cache->scontext,
412  cache->tcontext_is_valid ?
413  cache->tcontext : sepgsql_avc_unlabeled(),
414  cache->tclass,
415  audited,
416  audit_name);
417  }
418 
419  if (abort_on_violation && !result)
420  ereport(ERROR,
421  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
422  errmsg("SELinux: security policy violation")));
423 
424  return result;
425 }
#define SEPGSQL_MODE_INTERNAL
Definition: sepgsql.h:30
bool permissive
Definition: uavc.c:42
Definition: uavc.c:31
int errcode(int sqlerrcode)
Definition: elog.c:575
bool sepgsql_getenforce(void)
Definition: selinux.c:648
static char * sepgsql_avc_unlabeled(void)
Definition: uavc.c:176
uint32 allowed
Definition: uavc.c:38
uint32 auditallow
Definition: uavc.c:39
static avc_cache * sepgsql_avc_lookup(const char *scontext, const char *tcontext, uint16 tclass)
Definition: uavc.c:306
#define SEPGSQL_AVC_NOAUDIT
Definition: sepgsql.h:255
uint16 tclass
Definition: uavc.c:36
int sepgsql_get_mode(void)
Definition: selinux.c:622
bool tcontext_is_valid
Definition: uavc.c:44
#define ERROR
Definition: elog.h:43
void sepgsql_audit_log(bool denied, const char *scontext, const char *tcontext, uint16 tclass, uint32 audited, const char *audit_name)
Definition: selinux.c:677
char * tcontext
Definition: uavc.c:35
bool sepgsql_get_debug_audit(void)
Definition: hooks.c:75
char * scontext
Definition: uavc.c:34
unsigned int uint32
Definition: c.h:265
#define ereport(elevel, rest)
Definition: elog.h:122
char * sepgsql_get_client_label(void)
Definition: label.c:83
static bool sepgsql_avc_check_valid(void)
Definition: uavc.c:158
uint32 auditdeny
Definition: uavc.c:40
int errmsg(const char *fmt,...)
Definition: elog.c:797
void sepgsql_avc_init ( void  )

Definition at line 496 of file uavc.c.

References ALLOCSET_DEFAULT_SIZES, AllocSetContextCreate(), AVC_DEF_THRESHOLD, avc_lru_hint, avc_num_caches, avc_threshold, ereport, errcode(), errmsg(), ERROR, LOG, on_proc_exit(), sepgsql_avc_exit(), and TopMemoryContext.

Referenced by _PG_init().

497 {
498  int rc;
499 
500  /*
501  * All the avc stuff shall be allocated in avc_mem_cxt
502  */
504  "userspace access vector cache",
506  memset(avc_slots, 0, sizeof(avc_slots));
507  avc_num_caches = 0;
508  avc_lru_hint = 0;
510 
511  /*
512  * SELinux allows to mmap(2) its kernel status page in read-only mode to
513  * inform userspace applications its status updating (such as policy
514  * reloading) without system-call invocations. This feature is only
515  * supported in Linux-2.6.38 or later, however, libselinux provides a
516  * fallback mode to know its status using netlink sockets.
517  */
518  rc = selinux_status_open(1);
519  if (rc < 0)
520  ereport(ERROR,
521  (errcode(ERRCODE_INTERNAL_ERROR),
522  errmsg("SELinux: could not open selinux status : %m")));
523  else if (rc > 0)
524  ereport(LOG,
525  (errmsg("SELinux: kernel status page uses fallback mode")));
526 
527  /* Arrange to close selinux status page on process exit. */
529 }
#define AVC_DEF_THRESHOLD
Definition: uavc.c:55
void on_proc_exit(pg_on_exit_callback function, Datum arg)
Definition: ipc.c:292
int errcode(int sqlerrcode)
Definition: elog.c:575
#define LOG
Definition: elog.h:26
static MemoryContext avc_mem_cxt
Definition: uavc.c:57
#define ERROR
Definition: elog.h:43
#define ALLOCSET_DEFAULT_SIZES
Definition: memutils.h:145
static void sepgsql_avc_exit(int code, Datum arg)
Definition: uavc.c:485
static int avc_lru_hint
Definition: uavc.c:60
#define ereport(elevel, rest)
Definition: elog.h:122
MemoryContext TopMemoryContext
Definition: mcxt.c:43
static int avc_num_caches
Definition: uavc.c:59
MemoryContext AllocSetContextCreate(MemoryContext parent, const char *name, Size minContextSize, Size initBlockSize, Size maxBlockSize)
Definition: aset.c:440
static List * avc_slots[AVC_NUM_SLOTS]
Definition: uavc.c:58
int errmsg(const char *fmt,...)
Definition: elog.c:797
static int avc_threshold
Definition: uavc.c:61
char* sepgsql_avc_trusted_proc ( Oid  functionId)

Definition at line 453 of file uavc.c.

References ObjectAddress::classId, GetSecurityLabel(), avc_cache::ncontext, ObjectAddress::objectId, ObjectAddress::objectSubId, ProcedureRelationId, SEPG_CLASS_DB_PROCEDURE, sepgsql_avc_check_valid(), sepgsql_avc_lookup(), sepgsql_avc_unlabeled(), sepgsql_get_client_label(), and SEPGSQL_LABEL_TAG.

Referenced by sepgsql_fmgr_hook(), and sepgsql_needs_fmgr_hook().

454 {
455  char *scontext = sepgsql_get_client_label();
456  char *tcontext;
457  ObjectAddress tobject;
458  avc_cache *cache;
459 
460  tobject.classId = ProcedureRelationId;
461  tobject.objectId = functionId;
462  tobject.objectSubId = 0;
463  tcontext = GetSecurityLabel(&tobject, SEPGSQL_LABEL_TAG);
464 
466  do
467  {
468  if (tcontext)
469  cache = sepgsql_avc_lookup(scontext, tcontext,
471  else
472  cache = sepgsql_avc_lookup(scontext, sepgsql_avc_unlabeled(),
474  } while (!sepgsql_avc_check_valid());
475 
476  return cache->ncontext;
477 }
char * ncontext
Definition: uavc.c:46
#define ProcedureRelationId
Definition: pg_proc.h:33
Definition: uavc.c:31
static char * sepgsql_avc_unlabeled(void)
Definition: uavc.c:176
static avc_cache * sepgsql_avc_lookup(const char *scontext, const char *tcontext, uint16 tclass)
Definition: uavc.c:306
char * GetSecurityLabel(const ObjectAddress *object, const char *provider)
Definition: seclabel.c:195
#define SEPG_CLASS_DB_PROCEDURE
Definition: sepgsql.h:48
#define SEPGSQL_LABEL_TAG
Definition: sepgsql.h:23
char * sepgsql_get_client_label(void)
Definition: label.c:83
static bool sepgsql_avc_check_valid(void)
Definition: uavc.c:158
bool sepgsql_check_perms ( const char *  scontext,
const char *  tcontext,
uint16  tclass,
uint32  required,
const char *  audit_name,
bool  abort_on_violation 
)

Definition at line 902 of file selinux.c.

References ereport, errcode(), errmsg(), ERROR, sepgsql_audit_log(), sepgsql_compute_avd(), sepgsql_get_debug_audit(), sepgsql_getenforce(), sepgsql_mode, and SEPGSQL_MODE_INTERNAL.

908 {
909  struct av_decision avd;
910  uint32 denied;
911  uint32 audited;
912  bool result = true;
913 
914  sepgsql_compute_avd(scontext, tcontext, tclass, &avd);
915 
916  denied = required & ~avd.allowed;
917 
919  audited = (denied ? denied : required);
920  else
921  audited = (denied ? (denied & avd.auditdeny)
922  : (required & avd.auditallow));
923 
924  if (denied &&
925  sepgsql_getenforce() > 0 &&
926  (avd.flags & SELINUX_AVD_FLAGS_PERMISSIVE) == 0)
927  result = false;
928 
929  /*
930  * It records a security audit for the request, if needed. But, when
931  * SE-PgSQL performs 'internal' mode, it needs to keep silent.
932  */
933  if (audited && sepgsql_mode != SEPGSQL_MODE_INTERNAL)
934  {
935  sepgsql_audit_log(denied,
936  scontext,
937  tcontext,
938  tclass,
939  audited,
940  audit_name);
941  }
942 
943  if (!result && abort_on_violation)
944  ereport(ERROR,
945  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
946  errmsg("SELinux: security policy violation")));
947  return result;
948 }
#define SEPGSQL_MODE_INTERNAL
Definition: sepgsql.h:30
static int sepgsql_mode
Definition: selinux.c:607
void sepgsql_compute_avd(const char *scontext, const char *tcontext, uint16 tclass, struct av_decision *avd)
Definition: selinux.c:732
int errcode(int sqlerrcode)
Definition: elog.c:575
bool sepgsql_getenforce(void)
Definition: selinux.c:648
#define ERROR
Definition: elog.h:43
void sepgsql_audit_log(bool denied, const char *scontext, const char *tcontext, uint16 tclass, uint32 audited, const char *audit_name)
Definition: selinux.c:677
bool sepgsql_get_debug_audit(void)
Definition: hooks.c:75
unsigned int uint32
Definition: c.h:265
#define ereport(elevel, rest)
Definition: elog.h:122
int errmsg(const char *fmt,...)
Definition: elog.c:797
void sepgsql_compute_avd ( const char *  scontext,
const char *  tcontext,
uint16  tclass,
struct av_decision *  avd 
)

Definition at line 732 of file selinux.c.

References Assert, av_code, av_name, class_code, ereport, errcode(), errmsg(), ERROR, i, selinux_catalog, and SEPG_CLASS_MAX.

Referenced by sepgsql_avc_compute(), and sepgsql_check_perms().

736 {
737  const char *tclass_name;
738  security_class_t tclass_ex;
739  struct av_decision avd_ex;
740  int i,
741  deny_unknown = security_deny_unknown();
742 
743  /* Get external code of the object class */
744  Assert(tclass < SEPG_CLASS_MAX);
745  Assert(tclass == selinux_catalog[tclass].class_code);
746 
747  tclass_name = selinux_catalog[tclass].class_name;
748  tclass_ex = string_to_security_class(tclass_name);
749 
750  if (tclass_ex == 0)
751  {
752  /*
753  * If the current security policy does not support permissions
754  * corresponding to database objects, we fill up them with dummy data.
755  * If security_deny_unknown() returns positive value, undefined
756  * permissions should be denied. Otherwise, allowed
757  */
758  avd->allowed = (security_deny_unknown() > 0 ? 0 : ~0);
759  avd->auditallow = 0U;
760  avd->auditdeny = ~0U;
761  avd->flags = 0;
762 
763  return;
764  }
765 
766  /*
767  * Ask SELinux what is allowed set of permissions on a pair of the
768  * security contexts and the given object class.
769  */
770  if (security_compute_av_flags_raw((security_context_t) scontext,
771  (security_context_t) tcontext,
772  tclass_ex, 0, &avd_ex) < 0)
773  ereport(ERROR,
774  (errcode(ERRCODE_INTERNAL_ERROR),
775  errmsg("SELinux could not compute av_decision: "
776  "scontext=%s tcontext=%s tclass=%s: %m",
777  scontext, tcontext, tclass_name)));
778 
779  /*
780  * SELinux returns its access control decision as a set of permissions
781  * represented in external code which depends on run-time environment. So,
782  * we need to translate it to the internal representation before returning
783  * results for the caller.
784  */
785  memset(avd, 0, sizeof(struct av_decision));
786 
787  for (i = 0; selinux_catalog[tclass].av[i].av_name; i++)
788  {
789  access_vector_t av_code_ex;
790  const char *av_name = selinux_catalog[tclass].av[i].av_name;
791  uint32 av_code = selinux_catalog[tclass].av[i].av_code;
792 
793  av_code_ex = string_to_av_perm(tclass_ex, av_name);
794  if (av_code_ex == 0)
795  {
796  /* fill up undefined permissions */
797  if (!deny_unknown)
798  avd->allowed |= av_code;
799  avd->auditdeny |= av_code;
800 
801  continue;
802  }
803 
804  if (avd_ex.allowed & av_code_ex)
805  avd->allowed |= av_code;
806  if (avd_ex.auditallow & av_code_ex)
807  avd->auditallow |= av_code;
808  if (avd_ex.auditdeny & av_code_ex)
809  avd->auditdeny |= av_code;
810  }
811 
812  return;
813 }
#define SEPG_CLASS_MAX
Definition: sepgsql.h:54
const char * av_name
Definition: selinux.c:36
int errcode(int sqlerrcode)
Definition: elog.c:575
#define ERROR
Definition: elog.h:43
uint32 av_code
Definition: selinux.c:37
unsigned int uint32
Definition: c.h:265
#define ereport(elevel, rest)
Definition: elog.h:122
static struct @18 selinux_catalog[]
uint16 class_code
Definition: selinux.c:33
#define Assert(condition)
Definition: c.h:671
int errmsg(const char *fmt,...)
Definition: elog.c:797
int i
char* sepgsql_compute_create ( const char *  scontext,
const char *  tcontext,
uint16  tclass,
const char *  objname 
)

Definition at line 837 of file selinux.c.

References Assert, ereport, errcode(), errmsg(), ERROR, PG_CATCH, PG_END_TRY, PG_RE_THROW, PG_TRY, pstrdup(), selinux_catalog, and SEPG_CLASS_MAX.

Referenced by sepgsql_attribute_post_create(), sepgsql_avc_compute(), sepgsql_database_post_create(), sepgsql_proc_post_create(), sepgsql_relation_post_create(), and sepgsql_schema_post_create().

841 {
842  security_context_t ncontext;
843  security_class_t tclass_ex;
844  const char *tclass_name;
845  char *result;
846 
847  /* Get external code of the object class */
848  Assert(tclass < SEPG_CLASS_MAX);
849 
850  tclass_name = selinux_catalog[tclass].class_name;
851  tclass_ex = string_to_security_class(tclass_name);
852 
853  /*
854  * Ask SELinux what is the default context for the given object class on a
855  * pair of security contexts
856  */
857  if (security_compute_create_name_raw((security_context_t) scontext,
858  (security_context_t) tcontext,
859  tclass_ex,
860  objname,
861  &ncontext) < 0)
862  ereport(ERROR,
863  (errcode(ERRCODE_INTERNAL_ERROR),
864  errmsg("SELinux could not compute a new context: "
865  "scontext=%s tcontext=%s tclass=%s: %m",
866  scontext, tcontext, tclass_name)));
867 
868  /*
869  * libselinux returns malloc()'ed string, so we need to copy it on the
870  * palloc()'ed region.
871  */
872  PG_TRY();
873  {
874  result = pstrdup(ncontext);
875  }
876  PG_CATCH();
877  {
878  freecon(ncontext);
879  PG_RE_THROW();
880  }
881  PG_END_TRY();
882  freecon(ncontext);
883 
884  return result;
885 }
#define SEPG_CLASS_MAX
Definition: sepgsql.h:54
char * pstrdup(const char *in)
Definition: mcxt.c:1165
int errcode(int sqlerrcode)
Definition: elog.c:575
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
static struct @18 selinux_catalog[]
#define PG_CATCH()
Definition: elog.h:293
#define Assert(condition)
Definition: c.h:671
#define PG_RE_THROW()
Definition: elog.h:314
int errmsg(const char *fmt,...)
Definition: elog.c:797
#define PG_TRY()
Definition: elog.h:284
#define PG_END_TRY()
Definition: elog.h:300
void sepgsql_database_drop ( Oid  databaseId)

Definition at line 134 of file database.c.

References ObjectAddress::classId, DatabaseRelationId, getObjectIdentity(), pfree(), SEPG_CLASS_DB_DATABASE, SEPG_DB_DATABASE__DROP, and sepgsql_avc_check_perms().

Referenced by sepgsql_object_access().

135 {
136  ObjectAddress object;
137  char *audit_name;
138 
139  /*
140  * check db_database:{drop} permission
141  */
142  object.classId = DatabaseRelationId;
143  object.objectId = databaseId;
144  object.objectSubId = 0;
145  audit_name = getObjectIdentity(&object);
146 
147  sepgsql_avc_check_perms(&object,
150  audit_name,
151  true);
152  pfree(audit_name);
153 }
#define DatabaseRelationId
Definition: pg_database.h:29
bool sepgsql_avc_check_perms(const ObjectAddress *tobject, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:428
#define SEPG_CLASS_DB_DATABASE
Definition: sepgsql.h:44
void pfree(void *pointer)
Definition: mcxt.c:992
char * getObjectIdentity(const ObjectAddress *object)
#define SEPG_DB_DATABASE__DROP
Definition: sepgsql.h:119
void sepgsql_database_post_create ( Oid  databaseId,
const char *  dtemplate 
)

Definition at line 34 of file database.c.

References AccessShareLock, appendStringInfo(), BTEqualStrategyNumber, StringInfoData::data, DatabaseOidIndexId, DatabaseRelationId, elog, ERROR, get_database_oid(), GETSTRUCT, heap_close, heap_open(), HeapTupleIsValid, initStringInfo(), NameStr, ObjectIdAttributeNumber, ObjectIdGetDatum, pfree(), quote_identifier(), resetStringInfo(), ScanKeyInit(), SEPG_CLASS_DB_DATABASE, SEPG_DB_DATABASE__CREATE, SEPG_DB_DATABASE__GETATTR, sepgsql_avc_check_perms_label(), sepgsql_compute_create(), sepgsql_get_client_label(), sepgsql_get_label(), SEPGSQL_LABEL_TAG, SetSecurityLabel(), SnapshotSelf, systable_beginscan(), systable_endscan(), and systable_getnext().

Referenced by sepgsql_object_access().

35 {
36  Relation rel;
37  ScanKeyData skey;
38  SysScanDesc sscan;
39  HeapTuple tuple;
40  char *tcontext;
41  char *ncontext;
42  ObjectAddress object;
43  Form_pg_database datForm;
44  StringInfoData audit_name;
45 
46  /*
47  * Oid of the source database is not saved in pg_database catalog, so we
48  * collect its identifier using contextual information. If NULL, its
49  * default is "template1" according to createdb().
50  */
51  if (!dtemplate)
52  dtemplate = "template1";
53 
54  object.classId = DatabaseRelationId;
55  object.objectId = get_database_oid(dtemplate, false);
56  object.objectSubId = 0;
57 
58  tcontext = sepgsql_get_label(object.classId,
59  object.objectId,
60  object.objectSubId);
61 
62  /*
63  * check db_database:{getattr} permission
64  */
65  initStringInfo(&audit_name);
66  appendStringInfo(&audit_name, "%s", quote_identifier(dtemplate));
70  audit_name.data,
71  true);
72 
73  /*
74  * Compute a default security label of the newly created database based on
75  * a pair of security label of client and source database.
76  *
77  * XXX - uncoming version of libselinux supports to take object name to
78  * handle special treatment on default security label.
79  */
81 
82  ScanKeyInit(&skey,
84  BTEqualStrategyNumber, F_OIDEQ,
85  ObjectIdGetDatum(databaseId));
86 
87  sscan = systable_beginscan(rel, DatabaseOidIndexId, true,
88  SnapshotSelf, 1, &skey);
89  tuple = systable_getnext(sscan);
90  if (!HeapTupleIsValid(tuple))
91  elog(ERROR, "catalog lookup failed for database %u", databaseId);
92 
93  datForm = (Form_pg_database) GETSTRUCT(tuple);
94 
96  tcontext,
98  NameStr(datForm->datname));
99 
100  /*
101  * check db_database:{create} permission
102  */
103  resetStringInfo(&audit_name);
104  appendStringInfo(&audit_name, "%s",
105  quote_identifier(NameStr(datForm->datname)));
109  audit_name.data,
110  true);
111 
112  systable_endscan(sscan);
114 
115  /*
116  * Assign the default security label on the new database
117  */
118  object.classId = DatabaseRelationId;
119  object.objectId = databaseId;
120  object.objectSubId = 0;
121 
122  SetSecurityLabel(&object, SEPGSQL_LABEL_TAG, ncontext);
123 
124  pfree(ncontext);
125  pfree(tcontext);
126 }
bool sepgsql_avc_check_perms_label(const char *tcontext, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:346
void systable_endscan(SysScanDesc sysscan)
Definition: genam.c:493
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
void SetSecurityLabel(const ObjectAddress *object, const char *provider, const char *label)
Definition: seclabel.c:327
const char * quote_identifier(const char *ident)
Definition: ruleutils.c:9968
#define ObjectIdAttributeNumber
Definition: sysattr.h:22
FormData_pg_database * Form_pg_database
Definition: pg_database.h:57
#define DatabaseRelationId
Definition: pg_database.h:29
char * sepgsql_get_label(Oid classId, Oid objectId, int32 subId)
Definition: label.c:455
#define AccessShareLock
Definition: lockdefs.h:36
#define heap_close(r, l)
Definition: heapam.h:97
#define SEPG_CLASS_DB_DATABASE
Definition: sepgsql.h:44
SysScanDesc systable_beginscan(Relation heapRelation, Oid indexId, bool indexOK, Snapshot snapshot, int nkeys, ScanKey key)
Definition: genam.c:322
HeapTuple systable_getnext(SysScanDesc sysscan)
Definition: genam.c:410
#define SEPG_DB_DATABASE__CREATE
Definition: sepgsql.h:118
void pfree(void *pointer)
Definition: mcxt.c:992
void appendStringInfo(StringInfo str, const char *fmt,...)
Definition: stringinfo.c:110
#define ObjectIdGetDatum(X)
Definition: postgres.h:515
#define ERROR
Definition: elog.h:43
#define DatabaseOidIndexId
Definition: indexing.h:142
#define SEPGSQL_LABEL_TAG
Definition: sepgsql.h:23
void resetStringInfo(StringInfo str)
Definition: stringinfo.c:94
#define SnapshotSelf
Definition: tqual.h:27
#define SEPG_DB_DATABASE__GETATTR
Definition: sepgsql.h:120
void initStringInfo(StringInfo str)
Definition: stringinfo.c:65
Relation heap_open(Oid relationId, LOCKMODE lockmode)
Definition: heapam.c:1287
Oid get_database_oid(const char *dbname, bool missing_ok)
Definition: dbcommands.c:2001
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
char * sepgsql_get_client_label(void)
Definition: label.c:83
char * sepgsql_compute_create(const char *scontext, const char *tcontext, uint16 tclass, const char *objname)
Definition: selinux.c:837
#define NameStr(name)
Definition: c.h:495
void ScanKeyInit(ScanKey entry, AttrNumber attributeNumber, StrategyNumber strategy, RegProcedure procedure, Datum argument)
Definition: scankey.c:76
#define elog
Definition: elog.h:219
#define BTEqualStrategyNumber
Definition: stratnum.h:31
void sepgsql_database_relabel ( Oid  databaseId,
const char *  seclabel 
)

Definition at line 188 of file database.c.

References ObjectAddress::classId, DatabaseRelationId, getObjectIdentity(), pfree(), SEPG_CLASS_DB_DATABASE, SEPG_DB_DATABASE__RELABELFROM, SEPG_DB_DATABASE__RELABELTO, SEPG_DB_DATABASE__SETATTR, sepgsql_avc_check_perms(), and sepgsql_avc_check_perms_label().

Referenced by sepgsql_object_relabel().

189 {
190  ObjectAddress object;
191  char *audit_name;
192 
193  object.classId = DatabaseRelationId;
194  object.objectId = databaseId;
195  object.objectSubId = 0;
196  audit_name = getObjectIdentity(&object);
197 
198  /*
199  * check db_database:{setattr relabelfrom} permission
200  */
201  sepgsql_avc_check_perms(&object,
205  audit_name,
206  true);
207 
208  /*
209  * check db_database:{relabelto} permission
210  */
214  audit_name,
215  true);
216  pfree(audit_name);
217 }
bool sepgsql_avc_check_perms_label(const char *tcontext, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:346
#define DatabaseRelationId
Definition: pg_database.h:29
bool sepgsql_avc_check_perms(const ObjectAddress *tobject, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:428
#define SEPG_DB_DATABASE__RELABELFROM
Definition: sepgsql.h:122
#define SEPG_CLASS_DB_DATABASE
Definition: sepgsql.h:44
void pfree(void *pointer)
Definition: mcxt.c:992
char * getObjectIdentity(const ObjectAddress *object)
#define SEPG_DB_DATABASE__SETATTR
Definition: sepgsql.h:121
#define SEPG_DB_DATABASE__RELABELTO
Definition: sepgsql.h:123
void sepgsql_database_setattr ( Oid  databaseId)

Definition at line 161 of file database.c.

References ObjectAddress::classId, DatabaseRelationId, getObjectIdentity(), pfree(), SEPG_CLASS_DB_DATABASE, SEPG_DB_DATABASE__SETATTR, and sepgsql_avc_check_perms().

Referenced by sepgsql_object_access().

162 {
163  ObjectAddress object;
164  char *audit_name;
165 
166  /*
167  * check db_database:{setattr} permission
168  */
169  object.classId = DatabaseRelationId;
170  object.objectId = databaseId;
171  object.objectSubId = 0;
172  audit_name = getObjectIdentity(&object);
173 
174  sepgsql_avc_check_perms(&object,
177  audit_name,
178  true);
179  pfree(audit_name);
180 }
#define DatabaseRelationId
Definition: pg_database.h:29
bool sepgsql_avc_check_perms(const ObjectAddress *tobject, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:428
#define SEPG_CLASS_DB_DATABASE
Definition: sepgsql.h:44
void pfree(void *pointer)
Definition: mcxt.c:992
char * getObjectIdentity(const ObjectAddress *object)
#define SEPG_DB_DATABASE__SETATTR
Definition: sepgsql.h:121
bool sepgsql_dml_privileges ( List rangeTabls,
bool  abort_on_violation 
)

Definition at line 286 of file dml.c.

References ACL_DELETE, ACL_INSERT, ACL_SELECT, ACL_UPDATE, bms_is_empty(), check_relation_privileges(), find_all_inheritors(), fixup_inherited_columns(), RangeTblEntry::inh, RangeTblEntry::insertedCols, lfirst, lfirst_oid, list_free(), list_make1_oid, NoLock, NULL, RangeTblEntry::relid, RangeTblEntry::requiredPerms, RTE_RELATION, RangeTblEntry::rtekind, RangeTblEntry::selectedCols, SEPG_DB_TABLE__DELETE, SEPG_DB_TABLE__INSERT, SEPG_DB_TABLE__LOCK, SEPG_DB_TABLE__SELECT, SEPG_DB_TABLE__UPDATE, and RangeTblEntry::updatedCols.

Referenced by sepgsql_exec_check_perms().

287 {
288  ListCell *lr;
289 
290  foreach(lr, rangeTabls)
291  {
292  RangeTblEntry *rte = lfirst(lr);
293  uint32 required = 0;
294  List *tableIds;
295  ListCell *li;
296 
297  /*
298  * Only regular relations shall be checked
299  */
300  if (rte->rtekind != RTE_RELATION)
301  continue;
302 
303  /*
304  * Find out required permissions
305  */
306  if (rte->requiredPerms & ACL_SELECT)
307  required |= SEPG_DB_TABLE__SELECT;
308  if (rte->requiredPerms & ACL_INSERT)
309  required |= SEPG_DB_TABLE__INSERT;
310  if (rte->requiredPerms & ACL_UPDATE)
311  {
312  if (!bms_is_empty(rte->updatedCols))
313  required |= SEPG_DB_TABLE__UPDATE;
314  else
315  required |= SEPG_DB_TABLE__LOCK;
316  }
317  if (rte->requiredPerms & ACL_DELETE)
318  required |= SEPG_DB_TABLE__DELETE;
319 
320  /*
321  * Skip, if nothing to be checked
322  */
323  if (required == 0)
324  continue;
325 
326  /*
327  * If this RangeTblEntry is also supposed to reference inherited
328  * tables, we need to check security label of the child tables. So, we
329  * expand rte->relid into list of OIDs of inheritance hierarchy, then
330  * checker routine will be invoked for each relations.
331  */
332  if (!rte->inh)
333  tableIds = list_make1_oid(rte->relid);
334  else
335  tableIds = find_all_inheritors(rte->relid, NoLock, NULL);
336 
337  foreach(li, tableIds)
338  {
339  Oid tableOid = lfirst_oid(li);
340  Bitmapset *selectedCols;
341  Bitmapset *insertedCols;
342  Bitmapset *updatedCols;
343 
344  /*
345  * child table has different attribute numbers, so we need to fix
346  * up them.
347  */
348  selectedCols = fixup_inherited_columns(rte->relid, tableOid,
349  rte->selectedCols);
350  insertedCols = fixup_inherited_columns(rte->relid, tableOid,
351  rte->insertedCols);
352  updatedCols = fixup_inherited_columns(rte->relid, tableOid,
353  rte->updatedCols);
354 
355  /*
356  * check permissions on individual tables
357  */
358  if (!check_relation_privileges(tableOid,
359  selectedCols,
360  insertedCols,
361  updatedCols,
362  required, abort_on_violation))
363  return false;
364  }
365  list_free(tableIds);
366  }
367  return true;
368 }
static bool check_relation_privileges(Oid relOid, Bitmapset *selected, Bitmapset *inserted, Bitmapset *updated, uint32 required, bool abort_on_violation)
Definition: dml.c:146
#define SEPG_DB_TABLE__DELETE
Definition: sepgsql.h:146
static Bitmapset * fixup_inherited_columns(Oid parentId, Oid childId, Bitmapset *columns)
Definition: dml.c:94
#define ACL_DELETE
Definition: parsenodes.h:68
AclMode requiredPerms
Definition: parsenodes.h:965
unsigned int Oid
Definition: postgres_ext.h:31
#define SEPG_DB_TABLE__SELECT
Definition: sepgsql.h:143
Bitmapset * selectedCols
Definition: parsenodes.h:967
#define SEPG_DB_TABLE__UPDATE
Definition: sepgsql.h:144
#define NoLock
Definition: lockdefs.h:34
#define SEPG_DB_TABLE__INSERT
Definition: sepgsql.h:145
unsigned int uint32
Definition: c.h:265
bool bms_is_empty(const Bitmapset *a)
Definition: bitmapset.c:633
#define ACL_UPDATE
Definition: parsenodes.h:67
#define ACL_SELECT
Definition: parsenodes.h:66
#define list_make1_oid(x1)
Definition: pg_list.h:145
Bitmapset * updatedCols
Definition: parsenodes.h:969
#define NULL
Definition: c.h:226
#define lfirst(lc)
Definition: pg_list.h:106
#define ACL_INSERT
Definition: parsenodes.h:65
RTEKind rtekind
Definition: parsenodes.h:882
List * find_all_inheritors(Oid parentrelId, LOCKMODE lockmode, List **numparents)
Definition: pg_inherits.c:159
void list_free(List *list)
Definition: list.c:1133
Bitmapset * insertedCols
Definition: parsenodes.h:968
Definition: pg_list.h:45
#define SEPG_DB_TABLE__LOCK
Definition: sepgsql.h:147
#define lfirst_oid(lc)
Definition: pg_list.h:108
char* sepgsql_get_client_label ( void  )

Definition at line 83 of file label.c.

References Assert, client_label_committed, client_label_func, client_label_peer, pending_label::label, llast, and NULL.

Referenced by sepgsql_attribute_post_create(), sepgsql_avc_check_perms_label(), sepgsql_avc_trusted_proc(), sepgsql_database_post_create(), sepgsql_getcon(), sepgsql_proc_post_create(), sepgsql_relation_post_create(), sepgsql_schema_post_create(), and sepgsql_set_client_label().

84 {
85  /* trusted procedure client label override */
87  return client_label_func;
88 
89  /* uncommitted sepgsql_setcon() value */
91  {
93 
94  if (plabel->label)
95  return plabel->label;
96  }
97  else if (client_label_committed)
98  return client_label_committed; /* set by sepgsql_setcon() committed */
99 
100  /* default label */
102  return client_label_peer;
103 }
static char * client_label_func
Definition: label.c:67
static char * client_label_committed
Definition: label.c:65
#define llast(l)
Definition: pg_list.h:126
char * label
Definition: label.c:72
static List * client_label_pending
Definition: label.c:63
#define NULL
Definition: c.h:226
#define Assert(condition)
Definition: c.h:671
static char * client_label_peer
Definition: label.c:62
bool sepgsql_get_debug_audit ( void  )

Definition at line 75 of file hooks.c.

References sepgsql_debug_audit.

Referenced by sepgsql_avc_check_perms_label(), and sepgsql_check_perms().

76 {
77  return sepgsql_debug_audit;
78 }
static bool sepgsql_debug_audit
Definition: hooks.c:72
char* sepgsql_get_label ( Oid  relOid,
Oid  objOid,
int32  subId 
)

Definition at line 455 of file label.c.

References ereport, errcode(), errmsg(), ERROR, GetSecurityLabel(), label, PG_CATCH, PG_END_TRY, PG_RE_THROW, PG_TRY, pstrdup(), and SEPGSQL_LABEL_TAG.

Referenced by sepgsql_attribute_post_create(), sepgsql_database_post_create(), sepgsql_proc_post_create(), sepgsql_relation_post_create(), and sepgsql_schema_post_create().

456 {
457  ObjectAddress object;
458  char *label;
459 
460  object.classId = classId;
461  object.objectId = objectId;
462  object.objectSubId = subId;
463 
464  label = GetSecurityLabel(&object, SEPGSQL_LABEL_TAG);
465  if (!label || security_check_context_raw((security_context_t) label))
466  {
467  security_context_t unlabeled;
468 
469  if (security_get_initial_context_raw("unlabeled", &unlabeled) < 0)
470  ereport(ERROR,
471  (errcode(ERRCODE_INTERNAL_ERROR),
472  errmsg("SELinux: failed to get initial security label: %m")));
473  PG_TRY();
474  {
475  label = pstrdup(unlabeled);
476  }
477  PG_CATCH();
478  {
479  freecon(unlabeled);
480  PG_RE_THROW();
481  }
482  PG_END_TRY();
483 
484  freecon(unlabeled);
485  }
486  return label;
487 }
char * pstrdup(const char *in)
Definition: mcxt.c:1165
int errcode(int sqlerrcode)
Definition: elog.c:575
#define ERROR
Definition: elog.h:43
char * GetSecurityLabel(const ObjectAddress *object, const char *provider)
Definition: seclabel.c:195
#define SEPGSQL_LABEL_TAG
Definition: sepgsql.h:23
#define ereport(elevel, rest)
Definition: elog.h:122
static char * label
Definition: pg_basebackup.c:83
#define PG_CATCH()
Definition: elog.h:293
#define PG_RE_THROW()
Definition: elog.h:314
int errmsg(const char *fmt,...)
Definition: elog.c:797
#define PG_TRY()
Definition: elog.h:284
#define PG_END_TRY()
Definition: elog.h:300
int sepgsql_get_mode ( void  )

Definition at line 622 of file selinux.c.

References sepgsql_mode.

Referenced by sepgsql_avc_check_perms_label().

623 {
624  return sepgsql_mode;
625 }
static int sepgsql_mode
Definition: selinux.c:607
bool sepgsql_get_permissive ( void  )

Definition at line 64 of file hooks.c.

References sepgsql_permissive.

Referenced by sepgsql_client_auth().

65 {
66  return sepgsql_permissive;
67 }
static bool sepgsql_permissive
Definition: hooks.c:61
bool sepgsql_getenforce ( void  )

Definition at line 648 of file selinux.c.

References sepgsql_mode, and SEPGSQL_MODE_DEFAULT.

Referenced by check_relation_privileges(), sepgsql_avc_check_perms_label(), sepgsql_check_perms(), and sepgsql_utility_command().

649 {
651  selinux_status_getenforce() > 0)
652  return true;
653 
654  return false;
655 }
static int sepgsql_mode
Definition: selinux.c:607
#define SEPGSQL_MODE_DEFAULT
Definition: sepgsql.h:28
void sepgsql_init_client_label ( void  )

Definition at line 414 of file label.c.

References client_label_peer, ClientAuthentication_hook, ereport, errcode(), errmsg(), ERROR, fmgr_hook, needs_fmgr_hook, next_client_auth_hook, next_fmgr_hook, next_needs_fmgr_hook, NULL, RegisterSubXactCallback(), RegisterXactCallback(), sepgsql_client_auth(), sepgsql_fmgr_hook(), sepgsql_needs_fmgr_hook(), sepgsql_subxact_callback(), and sepgsql_xact_callback().

Referenced by _PG_init().

415 {
416  /*
417  * Set up dummy client label.
418  *
419  * XXX - note that PostgreSQL launches background worker process like
420  * autovacuum without authentication steps. So, we initialize sepgsql_mode
421  * with SEPGSQL_MODE_INTERNAL, and client_label with the security context
422  * of server process. Later, it also launches background of user session.
423  * In this case, the process is always hooked on post-authentication, and
424  * we can initialize the sepgsql_mode and client_label correctly.
425  */
426  if (getcon_raw(&client_label_peer) < 0)
427  ereport(ERROR,
428  (errcode(ERRCODE_INTERNAL_ERROR),
429  errmsg("SELinux: failed to get server security label: %m")));
430 
431  /* Client authentication hook */
434 
435  /* Trusted procedure hooks */
438 
441 
442  /* Transaction/Sub-transaction callbacks */
445 }
int errcode(int sqlerrcode)
Definition: elog.c:575
static void sepgsql_xact_callback(XactEvent event, void *arg)
Definition: label.c:168
static ClientAuthentication_hook_type next_client_auth_hook
Definition: label.c:45
static bool sepgsql_needs_fmgr_hook(Oid functionId)
Definition: label.c:278
#define ERROR
Definition: elog.h:43
ClientAuthentication_hook_type ClientAuthentication_hook
Definition: auth.c:226
#define ereport(elevel, rest)
Definition: elog.h:122
static void sepgsql_client_auth(Port *port, int status)
Definition: label.c:240
static needs_fmgr_hook_type next_needs_fmgr_hook
Definition: label.c:46
void RegisterSubXactCallback(SubXactCallback callback, void *arg)
Definition: xact.c:3358
PGDLLIMPORT fmgr_hook_type fmgr_hook
Definition: fmgr.c:37
PGDLLIMPORT needs_fmgr_hook_type needs_fmgr_hook
Definition: fmgr.c:36
static void sepgsql_subxact_callback(SubXactEvent event, SubTransactionId mySubid, SubTransactionId parentSubid, void *arg)
Definition: label.c:207
#define NULL
Definition: c.h:226
void RegisterXactCallback(XactCallback callback, void *arg)
Definition: xact.c:3303
static char * client_label_peer
Definition: label.c:62
static void sepgsql_fmgr_hook(FmgrHookEventType event, FmgrInfo *flinfo, Datum *private)
Definition: label.c:321
int errmsg(const char *fmt,...)
Definition: elog.c:797
static fmgr_hook_type next_fmgr_hook
Definition: label.c:47
bool sepgsql_is_enabled ( void  )

Definition at line 613 of file selinux.c.

References sepgsql_mode, and SEPGSQL_MODE_DISABLED.

Referenced by sepgsql_getcon(), sepgsql_mcstrans_in(), sepgsql_mcstrans_out(), and sepgsql_restorecon().

614 {
615  return (sepgsql_mode != SEPGSQL_MODE_DISABLED ? true : false);
616 }
static int sepgsql_mode
Definition: selinux.c:607
#define SEPGSQL_MODE_DISABLED
Definition: sepgsql.h:31
void sepgsql_object_relabel ( const ObjectAddress object,
const char *  seclabel 
)

Definition at line 495 of file label.c.

References ObjectAddress::classId, DatabaseRelationId, ereport, errcode(), errmsg(), ERROR, getObjectTypeDescription(), NamespaceRelationId, ObjectAddress::objectId, ObjectAddress::objectSubId, ProcedureRelationId, RelationRelationId, sepgsql_attribute_relabel(), sepgsql_database_relabel(), sepgsql_proc_relabel(), sepgsql_relation_relabel(), and sepgsql_schema_relabel().

Referenced by _PG_init(), and exec_object_restorecon().

496 {
497  /*
498  * validate format of the supplied security label, if it is security
499  * context of selinux.
500  */
501  if (seclabel &&
502  security_check_context_raw((security_context_t) seclabel) < 0)
503  ereport(ERROR,
504  (errcode(ERRCODE_INVALID_NAME),
505  errmsg("SELinux: invalid security label: \"%s\"", seclabel)));
506 
507  /*
508  * Do actual permission checks for each object classes
509  */
510  switch (object->classId)
511  {
512  case DatabaseRelationId:
513  sepgsql_database_relabel(object->objectId, seclabel);
514  break;
515 
516  case NamespaceRelationId:
517  sepgsql_schema_relabel(object->objectId, seclabel);
518  break;
519 
520  case RelationRelationId:
521  if (object->objectSubId == 0)
523  seclabel);
524  else
526  object->objectSubId,
527  seclabel);
528  break;
529 
530  case ProcedureRelationId:
531  sepgsql_proc_relabel(object->objectId, seclabel);
532  break;
533 
534  default:
535  ereport(ERROR,
536  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
537  errmsg("sepgsql provider does not support labels on %s",
538  getObjectTypeDescription(object))));
539  break;
540  }
541 }
#define NamespaceRelationId
Definition: pg_namespace.h:34
void sepgsql_schema_relabel(Oid namespaceId, const char *seclabel)
Definition: schema.c:144
char * getObjectTypeDescription(const ObjectAddress *object)
#define ProcedureRelationId
Definition: pg_proc.h:33
#define DatabaseRelationId
Definition: pg_database.h:29
#define RelationRelationId
Definition: pg_class.h:29
int errcode(int sqlerrcode)
Definition: elog.c:575
void sepgsql_database_relabel(Oid databaseId, const char *seclabel)
Definition: database.c:188
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
void sepgsql_relation_relabel(Oid relOid, const char *seclabel)
Definition: relation.c:520
void sepgsql_attribute_relabel(Oid relOid, AttrNumber attnum, const char *seclabel)
Definition: relation.c:165
void sepgsql_proc_relabel(Oid functionId, const char *seclabel)
Definition: proc.c:200
int errmsg(const char *fmt,...)
Definition: elog.c:797
void sepgsql_proc_drop ( Oid  functionId)

Definition at line 157 of file proc.c.

References ObjectAddress::classId, get_func_namespace(), getObjectIdentity(), NamespaceRelationId, pfree(), ProcedureRelationId, SEPG_CLASS_DB_PROCEDURE, SEPG_CLASS_DB_SCHEMA, SEPG_DB_PROCEDURE__DROP, SEPG_DB_SCHEMA__REMOVE_NAME, and sepgsql_avc_check_perms().

Referenced by sepgsql_object_access().

158 {
159  ObjectAddress object;
160  char *audit_name;
161 
162  /*
163  * check db_schema:{remove_name} permission
164  */
165  object.classId = NamespaceRelationId;
166  object.objectId = get_func_namespace(functionId);
167  object.objectSubId = 0;
168  audit_name = getObjectIdentity(&object);
169 
170  sepgsql_avc_check_perms(&object,
173  audit_name,
174  true);
175  pfree(audit_name);
176 
177  /*
178  * check db_procedure:{drop} permission
179  */
180  object.classId = ProcedureRelationId;
181  object.objectId = functionId;
182  object.objectSubId = 0;
183  audit_name = getObjectIdentity(&object);
184 
185  sepgsql_avc_check_perms(&object,
188  audit_name,
189  true);
190  pfree(audit_name);
191 }
#define SEPG_DB_PROCEDURE__DROP
Definition: sepgsql.h:160
#define NamespaceRelationId
Definition: pg_namespace.h:34
Oid get_func_namespace(Oid funcid)
Definition: lsyscache.c:1404
#define ProcedureRelationId
Definition: pg_proc.h:33
bool sepgsql_avc_check_perms(const ObjectAddress *tobject, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:428
#define SEPG_CLASS_DB_SCHEMA
Definition: sepgsql.h:45
void pfree(void *pointer)
Definition: mcxt.c:992
char * getObjectIdentity(const ObjectAddress *object)
#define SEPG_CLASS_DB_PROCEDURE
Definition: sepgsql.h:48
#define SEPG_DB_SCHEMA__REMOVE_NAME
Definition: sepgsql.h:135
void sepgsql_proc_execute ( Oid  functionId)

Definition at line 317 of file proc.c.

References ObjectAddress::classId, getObjectIdentity(), pfree(), ProcedureRelationId, SEPG_CLASS_DB_PROCEDURE, SEPG_DB_PROCEDURE__EXECUTE, and sepgsql_avc_check_perms().

Referenced by sepgsql_object_access().

318 {
319  ObjectAddress object;
320  char *audit_name;
321 
322  /*
323  * check db_procedure:{execute} permission
324  */
325  object.classId = ProcedureRelationId;
326  object.objectId = functionId;
327  object.objectSubId = 0;
328  audit_name = getObjectIdentity(&object);
329  sepgsql_avc_check_perms(&object,
332  audit_name,
333  true);
334  pfree(audit_name);
335 }
#define SEPG_DB_PROCEDURE__EXECUTE
Definition: sepgsql.h:165
#define ProcedureRelationId
Definition: pg_proc.h:33
bool sepgsql_avc_check_perms(const ObjectAddress *tobject, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:428
void pfree(void *pointer)
Definition: mcxt.c:992
char * getObjectIdentity(const ObjectAddress *object)
#define SEPG_CLASS_DB_PROCEDURE
Definition: sepgsql.h:48
void sepgsql_proc_post_create ( Oid  functionId)

Definition at line 39 of file proc.c.

References AccessShareLock, appendStringInfo(), appendStringInfoChar(), appendStringInfoString(), BTEqualStrategyNumber, StringInfoData::data, elog, ERROR, get_namespace_name(), getObjectIdentity(), GETSTRUCT, heap_close, heap_open(), HeapTupleIsValid, i, initStringInfo(), NamespaceRelationId, NameStr, ObjectIdAttributeNumber, ObjectIdGetDatum, pfree(), ProcedureOidIndexId, ProcedureRelationId, quote_qualified_identifier(), ScanKeyInit(), SEPG_CLASS_DB_PROCEDURE, SEPG_CLASS_DB_SCHEMA, SEPG_DB_PROCEDURE__CREATE, SEPG_DB_PROCEDURE__INSTALL, SEPG_DB_SCHEMA__ADD_NAME, sepgsql_avc_check_perms(), sepgsql_avc_check_perms_label(), sepgsql_compute_create(), sepgsql_get_client_label(), sepgsql_get_label(), SEPGSQL_LABEL_TAG, SetSecurityLabel(), SnapshotSelf, systable_beginscan(), systable_endscan(), systable_getnext(), and TypeRelationId.

Referenced by sepgsql_object_access().

40 {
41  Relation rel;
42  ScanKeyData skey;
43  SysScanDesc sscan;
44  HeapTuple tuple;
45  char *nsp_name;
46  char *scontext;
47  char *tcontext;
48  char *ncontext;
49  uint32 required;
50  int i;
51  StringInfoData audit_name;
52  ObjectAddress object;
53  Form_pg_proc proForm;
54 
55  /*
56  * Fetch namespace of the new procedure. Because pg_proc entry is not
57  * visible right now, we need to scan the catalog using SnapshotSelf.
58  */
60 
61  ScanKeyInit(&skey,
63  BTEqualStrategyNumber, F_OIDEQ,
64  ObjectIdGetDatum(functionId));
65 
66  sscan = systable_beginscan(rel, ProcedureOidIndexId, true,
67  SnapshotSelf, 1, &skey);
68 
69  tuple = systable_getnext(sscan);
70  if (!HeapTupleIsValid(tuple))
71  elog(ERROR, "catalog lookup failed for proc %u", functionId);
72 
73  proForm = (Form_pg_proc) GETSTRUCT(tuple);
74 
75  /*
76  * check db_schema:{add_name} permission of the namespace
77  */
78  object.classId = NamespaceRelationId;
79  object.objectId = proForm->pronamespace;
80  object.objectSubId = 0;
84  getObjectIdentity(&object),
85  true);
86 
87  /*
88  * XXX - db_language:{implement} also should be checked here
89  */
90 
91 
92  /*
93  * Compute a default security label when we create a new procedure object
94  * under the specified namespace.
95  */
96  scontext = sepgsql_get_client_label();
98  proForm->pronamespace, 0);
99  ncontext = sepgsql_compute_create(scontext, tcontext,
101  NameStr(proForm->proname));
102 
103  /*
104  * check db_procedure:{create (install)} permission
105  */
106  initStringInfo(&audit_name);
107  nsp_name = get_namespace_name(proForm->pronamespace);
108  appendStringInfo(&audit_name, "%s(",
109  quote_qualified_identifier(nsp_name, NameStr(proForm->proname)));
110  for (i = 0; i < proForm->pronargs; i++)
111  {
112  if (i > 0)
113  appendStringInfoChar(&audit_name, ',');
114 
115  object.classId = TypeRelationId;
116  object.objectId = proForm->proargtypes.values[i];
117  object.objectSubId = 0;
118  appendStringInfoString(&audit_name, getObjectIdentity(&object));
119  }
120  appendStringInfoChar(&audit_name, ')');
121 
122  required = SEPG_DB_PROCEDURE__CREATE;
123  if (proForm->proleakproof)
124  required |= SEPG_DB_PROCEDURE__INSTALL;
125 
128  required,
129  audit_name.data,
130  true);
131 
132  /*
133  * Assign the default security label on a new procedure
134  */
135  object.classId = ProcedureRelationId;
136  object.objectId = functionId;
137  object.objectSubId = 0;
138  SetSecurityLabel(&object, SEPGSQL_LABEL_TAG, ncontext);
139 
140  /*
141  * Cleanup
142  */
143  systable_endscan(sscan);
145 
146  pfree(audit_name.data);
147  pfree(tcontext);
148  pfree(ncontext);
149 }
bool sepgsql_avc_check_perms_label(const char *tcontext, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:346
#define ProcedureOidIndexId
Definition: indexing.h:209
#define NamespaceRelationId
Definition: pg_namespace.h:34
void systable_endscan(SysScanDesc sysscan)
Definition: genam.c:493
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
void SetSecurityLabel(const ObjectAddress *object, const char *provider, const char *label)
Definition: seclabel.c:327
#define ObjectIdAttributeNumber
Definition: sysattr.h:22
#define ProcedureRelationId
Definition: pg_proc.h:33
char * sepgsql_get_label(Oid classId, Oid objectId, int32 subId)
Definition: label.c:455
bool sepgsql_avc_check_perms(const ObjectAddress *tobject, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:428
#define AccessShareLock
Definition: lockdefs.h:36
#define heap_close(r, l)
Definition: heapam.h:97
#define SEPG_CLASS_DB_SCHEMA
Definition: sepgsql.h:45
#define TypeRelationId
Definition: pg_type.h:34
SysScanDesc systable_beginscan(Relation heapRelation, Oid indexId, bool indexOK, Snapshot snapshot, int nkeys, ScanKey key)
Definition: genam.c:322
HeapTuple systable_getnext(SysScanDesc sysscan)
Definition: genam.c:410
void pfree(void *pointer)
Definition: mcxt.c:992
void appendStringInfo(StringInfo str, const char *fmt,...)
Definition: stringinfo.c:110
#define SEPG_DB_PROCEDURE__CREATE
Definition: sepgsql.h:159
#define ObjectIdGetDatum(X)
Definition: postgres.h:515
#define ERROR
Definition: elog.h:43
char * getObjectIdentity(const ObjectAddress *object)
void appendStringInfoString(StringInfo str, const char *s)
Definition: stringinfo.c:189
char * get_namespace_name(Oid nspid)
Definition: lsyscache.c:3006
#define SEPG_CLASS_DB_PROCEDURE
Definition: sepgsql.h:48
#define SEPGSQL_LABEL_TAG
Definition: sepgsql.h:23
unsigned int uint32
Definition: c.h:265
#define SnapshotSelf
Definition: tqual.h:27
void appendStringInfoChar(StringInfo str, char ch)
Definition: stringinfo.c:201
void initStringInfo(StringInfo str)
Definition: stringinfo.c:65
char * quote_qualified_identifier(const char *qualifier, const char *ident)
Definition: ruleutils.c:10054
Relation heap_open(Oid relationId, LOCKMODE lockmode)
Definition: heapam.c:1287
#define SEPG_DB_SCHEMA__ADD_NAME
Definition: sepgsql.h:134
FormData_pg_proc * Form_pg_proc
Definition: pg_proc.h:83
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
char * sepgsql_get_client_label(void)
Definition: label.c:83
char * sepgsql_compute_create(const char *scontext, const char *tcontext, uint16 tclass, const char *objname)
Definition: selinux.c:837
int i
#define NameStr(name)
Definition: c.h:495
void ScanKeyInit(ScanKey entry, AttrNumber attributeNumber, StrategyNumber strategy, RegProcedure procedure, Datum argument)
Definition: scankey.c:76
#define elog
Definition: elog.h:219
#define BTEqualStrategyNumber
Definition: stratnum.h:31
#define SEPG_DB_PROCEDURE__INSTALL
Definition: sepgsql.h:167
void sepgsql_proc_relabel ( Oid  functionId,
const char *  seclabel 
)

Definition at line 200 of file proc.c.

References ObjectAddress::classId, getObjectIdentity(), pfree(), ProcedureRelationId, SEPG_CLASS_DB_PROCEDURE, SEPG_DB_PROCEDURE__RELABELFROM, SEPG_DB_PROCEDURE__RELABELTO, SEPG_DB_PROCEDURE__SETATTR, sepgsql_avc_check_perms(), and sepgsql_avc_check_perms_label().

Referenced by sepgsql_object_relabel().

201 {
202  ObjectAddress object;
203  char *audit_name;
204 
205  object.classId = ProcedureRelationId;
206  object.objectId = functionId;
207  object.objectSubId = 0;
208  audit_name = getObjectIdentity(&object);
209 
210  /*
211  * check db_procedure:{setattr relabelfrom} permission
212  */
213  sepgsql_avc_check_perms(&object,
217  audit_name,
218  true);
219 
220  /*
221  * check db_procedure:{relabelto} permission
222  */
226  audit_name,
227  true);
228  pfree(audit_name);
229 }
bool sepgsql_avc_check_perms_label(const char *tcontext, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:346
#define ProcedureRelationId
Definition: pg_proc.h:33
bool sepgsql_avc_check_perms(const ObjectAddress *tobject, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:428
void pfree(void *pointer)
Definition: mcxt.c:992
char * getObjectIdentity(const ObjectAddress *object)
#define SEPG_DB_PROCEDURE__RELABELFROM
Definition: sepgsql.h:163
#define SEPG_CLASS_DB_PROCEDURE
Definition: sepgsql.h:48
#define SEPG_DB_PROCEDURE__RELABELTO
Definition: sepgsql.h:164
#define SEPG_DB_PROCEDURE__SETATTR
Definition: sepgsql.h:162
void sepgsql_proc_setattr ( Oid  functionId)

Definition at line 237 of file proc.c.

References AccessShareLock, BTEqualStrategyNumber, elog, ERROR, getObjectIdentity(), GETSTRUCT, heap_close, heap_open(), HeapTupleIsValid, NameStr, ObjectIdAttributeNumber, ObjectIdGetDatum, pfree(), ProcedureOidIndexId, ProcedureRelationId, PROCOID, ReleaseSysCache(), ScanKeyInit(), SearchSysCache1, SEPG_CLASS_DB_PROCEDURE, SEPG_DB_PROCEDURE__INSTALL, SEPG_DB_PROCEDURE__SETATTR, sepgsql_avc_check_perms(), sepgsql_schema_add_name(), sepgsql_schema_remove_name(), sepgsql_schema_rename(), SnapshotSelf, systable_beginscan(), systable_endscan(), and systable_getnext().

Referenced by sepgsql_object_access().

238 {
239  Relation rel;
240  ScanKeyData skey;
241  SysScanDesc sscan;
242  HeapTuple oldtup;
243  HeapTuple newtup;
244  Form_pg_proc oldform;
245  Form_pg_proc newform;
246  uint32 required;
247  ObjectAddress object;
248  char *audit_name;
249 
250  /*
251  * Fetch newer catalog
252  */
254 
255  ScanKeyInit(&skey,
257  BTEqualStrategyNumber, F_OIDEQ,
258  ObjectIdGetDatum(functionId));
259 
260  sscan = systable_beginscan(rel, ProcedureOidIndexId, true,
261  SnapshotSelf, 1, &skey);
262  newtup = systable_getnext(sscan);
263  if (!HeapTupleIsValid(newtup))
264  elog(ERROR, "catalog lookup failed for function %u", functionId);
265  newform = (Form_pg_proc) GETSTRUCT(newtup);
266 
267  /*
268  * Fetch older catalog
269  */
270  oldtup = SearchSysCache1(PROCOID, ObjectIdGetDatum(functionId));
271  if (!HeapTupleIsValid(oldtup))
272  elog(ERROR, "cache lookup failed for function %u", functionId);
273  oldform = (Form_pg_proc) GETSTRUCT(oldtup);
274 
275  /*
276  * Does this ALTER command takes operation to namespace?
277  */
278  if (newform->pronamespace != oldform->pronamespace)
279  {
280  sepgsql_schema_remove_name(oldform->pronamespace);
281  sepgsql_schema_add_name(oldform->pronamespace);
282  }
283  if (strcmp(NameStr(newform->proname), NameStr(oldform->proname)) != 0)
284  sepgsql_schema_rename(oldform->pronamespace);
285 
286  /*
287  * check db_procedure:{setattr (install)} permission
288  */
289  required = SEPG_DB_PROCEDURE__SETATTR;
290  if (!oldform->proleakproof && newform->proleakproof)
291  required |= SEPG_DB_PROCEDURE__INSTALL;
292 
293  object.classId = ProcedureRelationId;
294  object.objectId = functionId;
295  object.objectSubId = 0;
296  audit_name = getObjectIdentity(&object);
297 
298  sepgsql_avc_check_perms(&object,
300  required,
301  audit_name,
302  true);
303  /* cleanups */
304  pfree(audit_name);
305 
306  ReleaseSysCache(oldtup);
307  systable_endscan(sscan);
309 }
#define ProcedureOidIndexId
Definition: indexing.h:209
void systable_endscan(SysScanDesc sysscan)
Definition: genam.c:493
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
#define ObjectIdAttributeNumber
Definition: sysattr.h:22
#define ProcedureRelationId
Definition: pg_proc.h:33
void sepgsql_schema_add_name(Oid namespaceId)
Definition: schema.c:219
bool sepgsql_avc_check_perms(const ObjectAddress *tobject, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:428
void sepgsql_schema_remove_name(Oid namespaceId)
Definition: schema.c:225
#define AccessShareLock
Definition: lockdefs.h:36
#define heap_close(r, l)
Definition: heapam.h:97
SysScanDesc systable_beginscan(Relation heapRelation, Oid indexId, bool indexOK, Snapshot snapshot, int nkeys, ScanKey key)
Definition: genam.c:322
#define SearchSysCache1(cacheId, key1)
Definition: syscache.h:149
HeapTuple systable_getnext(SysScanDesc sysscan)
Definition: genam.c:410
void pfree(void *pointer)
Definition: mcxt.c:992
#define ObjectIdGetDatum(X)
Definition: postgres.h:515
#define ERROR
Definition: elog.h:43
char * getObjectIdentity(const ObjectAddress *object)
void sepgsql_schema_rename(Oid namespaceId)
Definition: schema.c:231
#define SEPG_CLASS_DB_PROCEDURE
Definition: sepgsql.h:48
unsigned int uint32
Definition: c.h:265
#define SnapshotSelf
Definition: tqual.h:27
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1083
Relation heap_open(Oid relationId, LOCKMODE lockmode)
Definition: heapam.c:1287
FormData_pg_proc * Form_pg_proc
Definition: pg_proc.h:83
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
#define NameStr(name)
Definition: c.h:495
void ScanKeyInit(ScanKey entry, AttrNumber attributeNumber, StrategyNumber strategy, RegProcedure procedure, Datum argument)
Definition: scankey.c:76
#define elog
Definition: elog.h:219
#define SEPG_DB_PROCEDURE__SETATTR
Definition: sepgsql.h:162
#define BTEqualStrategyNumber
Definition: stratnum.h:31
#define SEPG_DB_PROCEDURE__INSTALL
Definition: sepgsql.h:167
void sepgsql_relation_drop ( Oid  relOid)

Definition at line 412 of file relation.c.

References ATTNUM, get_rel_namespace(), get_rel_relkind(), getObjectIdentity(), GETSTRUCT, i, catclist::members, catclist::n_members, NamespaceRelationId, ObjectIdGetDatum, pfree(), PG_TOAST_NAMESPACE, RelationRelationId, ReleaseCatCacheList(), RELKIND_INDEX, RELKIND_RELATION, RELKIND_SEQUENCE, RELKIND_VIEW, SearchSysCacheList1, SEPG_CLASS_DB_COLUMN, SEPG_CLASS_DB_SCHEMA, SEPG_CLASS_DB_SEQUENCE, SEPG_CLASS_DB_TABLE, SEPG_CLASS_DB_VIEW, SEPG_DB_COLUMN__DROP, SEPG_DB_SCHEMA__REMOVE_NAME, SEPG_DB_TABLE__DROP, sepgsql_avc_check_perms(), sepgsql_index_modify(), and catctup::tuple.

Referenced by sepgsql_object_access().

413 {
414  ObjectAddress object;
415  char *audit_name;
416  uint16_t tclass;
417  char relkind;
418 
419  relkind = get_rel_relkind(relOid);
420  switch (relkind)
421  {
422  case RELKIND_RELATION:
423  tclass = SEPG_CLASS_DB_TABLE;
424  break;
425  case RELKIND_SEQUENCE:
426  tclass = SEPG_CLASS_DB_SEQUENCE;
427  break;
428  case RELKIND_VIEW:
429  tclass = SEPG_CLASS_DB_VIEW;
430  break;
431  case RELKIND_INDEX:
432  /* ignore indexes on toast tables */
433  if (get_rel_namespace(relOid) == PG_TOAST_NAMESPACE)
434  return;
435  /* other indexes are handled specially below; no need for tclass */
436  break;
437  default:
438  /* ignore other relkinds */
439  return;
440  }
441 
442  /*
443  * check db_schema:{remove_name} permission
444  */
445  object.classId = NamespaceRelationId;
446  object.objectId = get_rel_namespace(relOid);
447  object.objectSubId = 0;
448  audit_name = getObjectIdentity(&object);
449 
450  sepgsql_avc_check_perms(&object,
453  audit_name,
454  true);
455  pfree(audit_name);
456 
457  /* deal with indexes specially */
458  if (relkind == RELKIND_INDEX)
459  {
460  sepgsql_index_modify(relOid);
461  return;
462  }
463 
464  /*
465  * check db_table/sequence/view:{drop} permission
466  */
467  object.classId = RelationRelationId;
468  object.objectId = relOid;
469  object.objectSubId = 0;
470  audit_name = getObjectIdentity(&object);
471 
472  sepgsql_avc_check_perms(&object,
473  tclass,
475  audit_name,
476  true);
477  pfree(audit_name);
478 
479  /*
480  * check db_column:{drop} permission
481  */
482  if (relkind == RELKIND_RELATION)
483  {
484  Form_pg_attribute attForm;
485  CatCList *attrList;
486  HeapTuple atttup;
487  int i;
488 
489  attrList = SearchSysCacheList1(ATTNUM, ObjectIdGetDatum(relOid));
490  for (i = 0; i < attrList->n_members; i++)
491  {
492  atttup = &attrList->members[i]->tuple;
493  attForm = (Form_pg_attribute) GETSTRUCT(atttup);
494 
495  if (attForm->attisdropped)
496  continue;
497 
498  object.classId = RelationRelationId;
499  object.objectId = relOid;
500  object.objectSubId = attForm->attnum;
501  audit_name = getObjectIdentity(&object);
502 
503  sepgsql_avc_check_perms(&object,
506  audit_name,
507  true);
508  pfree(audit_name);
509  }
510  ReleaseCatCacheList(attrList);
511  }
512 }
#define NamespaceRelationId
Definition: pg_namespace.h:34
int n_members
Definition: catcache.h:154
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
#define SEPG_CLASS_DB_COLUMN
Definition: sepgsql.h:49
char get_rel_relkind(Oid relid)
Definition: lsyscache.c:1769
#define RelationRelationId
Definition: pg_class.h:29
bool sepgsql_avc_check_perms(const ObjectAddress *tobject, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:428
Oid get_rel_namespace(Oid relid)
Definition: lsyscache.c:1718
#define SEPG_CLASS_DB_SCHEMA
Definition: sepgsql.h:45
#define PG_TOAST_NAMESPACE
Definition: pg_namespace.h:74
void ReleaseCatCacheList(CatCList *list)
Definition: catcache.c:1665
CatCTup * members[FLEXIBLE_ARRAY_MEMBER]
Definition: catcache.h:155
void pfree(void *pointer)
Definition: mcxt.c:992
#define SEPG_CLASS_DB_SEQUENCE
Definition: sepgsql.h:47
#define ObjectIdGetDatum(X)
Definition: postgres.h:515
char * getObjectIdentity(const ObjectAddress *object)
#define SEPG_DB_TABLE__DROP
Definition: sepgsql.h:138
FormData_pg_attribute * Form_pg_attribute
Definition: pg_attribute.h:184
#define SearchSysCacheList1(cacheId, key1)
Definition: syscache.h:194
static void sepgsql_index_modify(Oid indexOid)
Definition: relation.c:718
#define SEPG_CLASS_DB_VIEW
Definition: sepgsql.h:53
#define SEPG_DB_COLUMN__DROP
Definition: sepgsql.h:170
#define SEPG_CLASS_DB_TABLE
Definition: sepgsql.h:46
#define RELKIND_VIEW
Definition: pg_class.h:164
int i
#define RELKIND_INDEX
Definition: pg_class.h:161
HeapTupleData tuple
Definition: catcache.h:116
#define RELKIND_RELATION
Definition: pg_class.h:160
#define RELKIND_SEQUENCE
Definition: pg_class.h:162
#define SEPG_DB_SCHEMA__REMOVE_NAME
Definition: sepgsql.h:135
void sepgsql_relation_post_create ( Oid  relOid)

Definition at line 238 of file relation.c.

References AccessShareLock, Anum_pg_attribute_attrelid, appendStringInfo(), AttributeRelationId, AttributeRelidNumIndexId, BTEqualStrategyNumber, ClassOidIndexId, StringInfoData::data, elog, ERROR, get_namespace_name(), getObjectIdentity(), GETSTRUCT, heap_close, heap_open(), HeapTupleIsValid, initStringInfo(), NamespaceRelationId, NameStr, ObjectIdAttributeNumber, ObjectIdGetDatum, pfree(), PG_TOAST_NAMESPACE, quote_identifier(), RelationRelationId, RELKIND_INDEX, RELKIND_RELATION, RELKIND_SEQUENCE, RELKIND_VIEW, resetStringInfo(), ScanKeyInit(), SEPG_CLASS_DB_COLUMN, SEPG_CLASS_DB_SCHEMA, SEPG_CLASS_DB_SEQUENCE, SEPG_CLASS_DB_TABLE, SEPG_CLASS_DB_VIEW, SEPG_DB_COLUMN__CREATE, SEPG_DB_DATABASE__CREATE, SEPG_DB_SCHEMA__ADD_NAME, sepgsql_avc_check_perms(), sepgsql_avc_check_perms_label(), sepgsql_compute_create(), sepgsql_get_client_label(), sepgsql_get_label(), sepgsql_index_modify(), SEPGSQL_LABEL_TAG, SetSecurityLabel(), SnapshotSelf, systable_beginscan(), systable_endscan(), and systable_getnext().

Referenced by sepgsql_object_access().

239 {
240  Relation rel;
241  ScanKeyData skey;
242  SysScanDesc sscan;
243  HeapTuple tuple;
244  Form_pg_class classForm;
245  ObjectAddress object;
246  uint16 tclass;
247  char *scontext; /* subject */
248  char *tcontext; /* schema */
249  char *rcontext; /* relation */
250  char *ccontext; /* column */
251  char *nsp_name;
252  StringInfoData audit_name;
253 
254  /*
255  * Fetch catalog record of the new relation. Because pg_class entry is not
256  * visible right now, we need to scan the catalog using SnapshotSelf.
257  */
259 
260  ScanKeyInit(&skey,
262  BTEqualStrategyNumber, F_OIDEQ,
263  ObjectIdGetDatum(relOid));
264 
265  sscan = systable_beginscan(rel, ClassOidIndexId, true,
266  SnapshotSelf, 1, &skey);
267 
268  tuple = systable_getnext(sscan);
269  if (!HeapTupleIsValid(tuple))
270  elog(ERROR, "catalog lookup failed for relation %u", relOid);
271 
272  classForm = (Form_pg_class) GETSTRUCT(tuple);
273 
274  /* ignore indexes on toast tables */
275  if (classForm->relkind == RELKIND_INDEX &&
276  classForm->relnamespace == PG_TOAST_NAMESPACE)
277  goto out;
278 
279  /*
280  * check db_schema:{add_name} permission of the namespace
281  */
282  object.classId = NamespaceRelationId;
283  object.objectId = classForm->relnamespace;
284  object.objectSubId = 0;
285  sepgsql_avc_check_perms(&object,
288  getObjectIdentity(&object),
289  true);
290 
291  switch (classForm->relkind)
292  {
293  case RELKIND_RELATION:
294  tclass = SEPG_CLASS_DB_TABLE;
295  break;
296  case RELKIND_SEQUENCE:
297  tclass = SEPG_CLASS_DB_SEQUENCE;
298  break;
299  case RELKIND_VIEW:
300  tclass = SEPG_CLASS_DB_VIEW;
301  break;
302  case RELKIND_INDEX:
303  /* deal with indexes specially; no need for tclass */
304  sepgsql_index_modify(relOid);
305  goto out;
306  default:
307  /* ignore other relkinds */
308  goto out;
309  }
310 
311  /*
312  * Compute a default security label when we create a new relation object
313  * under the specified namespace.
314  */
315  scontext = sepgsql_get_client_label();
317  classForm->relnamespace, 0);
318  rcontext = sepgsql_compute_create(scontext, tcontext, tclass,
319  NameStr(classForm->relname));
320 
321  /*
322  * check db_xxx:{create} permission
323  */
324  nsp_name = get_namespace_name(classForm->relnamespace);
325  initStringInfo(&audit_name);
326  appendStringInfo(&audit_name, "%s.%s",
327  quote_identifier(nsp_name),
328  quote_identifier(NameStr(classForm->relname)));
330  tclass,
332  audit_name.data,
333  true);
334 
335  /*
336  * Assign the default security label on the new relation
337  */
338  object.classId = RelationRelationId;
339  object.objectId = relOid;
340  object.objectSubId = 0;
341  SetSecurityLabel(&object, SEPGSQL_LABEL_TAG, rcontext);
342 
343  /*
344  * We also assigns a default security label on columns of the new regular
345  * tables.
346  */
347  if (classForm->relkind == RELKIND_RELATION)
348  {
349  Relation arel;
350  ScanKeyData akey;
351  SysScanDesc ascan;
352  HeapTuple atup;
353  Form_pg_attribute attForm;
354 
356 
357  ScanKeyInit(&akey,
359  BTEqualStrategyNumber, F_OIDEQ,
360  ObjectIdGetDatum(relOid));
361 
362  ascan = systable_beginscan(arel, AttributeRelidNumIndexId, true,
363  SnapshotSelf, 1, &akey);
364 
365  while (HeapTupleIsValid(atup = systable_getnext(ascan)))
366  {
367  attForm = (Form_pg_attribute) GETSTRUCT(atup);
368 
369  resetStringInfo(&audit_name);
370  appendStringInfo(&audit_name, "%s.%s.%s",
371  quote_identifier(nsp_name),
372  quote_identifier(NameStr(classForm->relname)),
373  quote_identifier(NameStr(attForm->attname)));
374 
375  ccontext = sepgsql_compute_create(scontext,
376  rcontext,
378  NameStr(attForm->attname));
379 
380  /*
381  * check db_column:{create} permission
382  */
386  audit_name.data,
387  true);
388 
389  object.classId = RelationRelationId;
390  object.objectId = relOid;
391  object.objectSubId = attForm->attnum;
392  SetSecurityLabel(&object, SEPGSQL_LABEL_TAG, ccontext);
393 
394  pfree(ccontext);
395  }
396  systable_endscan(ascan);
398  }
399  pfree(rcontext);
400 
401 out:
402  systable_endscan(sscan);
404 }
#define AttributeRelidNumIndexId
Definition: indexing.h:94
bool sepgsql_avc_check_perms_label(const char *tcontext, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:346
#define Anum_pg_attribute_attrelid
Definition: pg_attribute.h:192
#define NamespaceRelationId
Definition: pg_namespace.h:34
void systable_endscan(SysScanDesc sysscan)
Definition: genam.c:493
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
#define SEPG_CLASS_DB_COLUMN
Definition: sepgsql.h:49
void SetSecurityLabel(const ObjectAddress *object, const char *provider, const char *label)
Definition: seclabel.c:327
const char * quote_identifier(const char *ident)
Definition: ruleutils.c:9968
#define ObjectIdAttributeNumber
Definition: sysattr.h:22
#define RelationRelationId
Definition: pg_class.h:29
char * sepgsql_get_label(Oid classId, Oid objectId, int32 subId)
Definition: label.c:455
bool sepgsql_avc_check_perms(const ObjectAddress *tobject, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:428
#define AccessShareLock
Definition: lockdefs.h:36
#define AttributeRelationId
Definition: pg_attribute.h:33
#define heap_close(r, l)
Definition: heapam.h:97
#define SEPG_CLASS_DB_SCHEMA
Definition: sepgsql.h:45
#define PG_TOAST_NAMESPACE
Definition: pg_namespace.h:74
SysScanDesc systable_beginscan(Relation heapRelation, Oid indexId, bool indexOK, Snapshot snapshot, int nkeys, ScanKey key)
Definition: genam.c:322
HeapTuple systable_getnext(SysScanDesc sysscan)
Definition: genam.c:410
#define SEPG_DB_DATABASE__CREATE
Definition: sepgsql.h:118
unsigned short uint16
Definition: c.h:264
void pfree(void *pointer)
Definition: mcxt.c:992
void appendStringInfo(StringInfo str, const char *fmt,...)
Definition: stringinfo.c:110
#define SEPG_CLASS_DB_SEQUENCE
Definition: sepgsql.h:47
#define ObjectIdGetDatum(X)
Definition: postgres.h:515
#define ERROR
Definition: elog.h:43
char * getObjectIdentity(const ObjectAddress *object)
char * get_namespace_name(Oid nspid)
Definition: lsyscache.c:3006
#define SEPGSQL_LABEL_TAG
Definition: sepgsql.h:23
FormData_pg_attribute * Form_pg_attribute
Definition: pg_attribute.h:184
void resetStringInfo(StringInfo str)
Definition: stringinfo.c:94
#define ClassOidIndexId
Definition: indexing.h:112
#define SnapshotSelf
Definition: tqual.h:27
static void sepgsql_index_modify(Oid indexOid)
Definition: relation.c:718
void initStringInfo(StringInfo str)
Definition: stringinfo.c:65
#define SEPG_CLASS_DB_VIEW
Definition: sepgsql.h:53
Relation heap_open(Oid relationId, LOCKMODE lockmode)
Definition: heapam.c:1287
#define SEPG_DB_SCHEMA__ADD_NAME
Definition: sepgsql.h:134
#define SEPG_DB_COLUMN__CREATE
Definition: sepgsql.h:169
#define SEPG_CLASS_DB_TABLE
Definition: sepgsql.h:46
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
char * sepgsql_get_client_label(void)
Definition: label.c:83
FormData_pg_class * Form_pg_class
Definition: pg_class.h:95
char * sepgsql_compute_create(const char *scontext, const char *tcontext, uint16 tclass, const char *objname)
Definition: selinux.c:837
#define RELKIND_VIEW
Definition: pg_class.h:164
#define NameStr(name)
Definition: c.h:495
#define RELKIND_INDEX
Definition: pg_class.h:161
void ScanKeyInit(ScanKey entry, AttrNumber attributeNumber, StrategyNumber strategy, RegProcedure procedure, Datum argument)
Definition: scankey.c:76
#define elog
Definition: elog.h:219
#define RELKIND_RELATION
Definition: pg_class.h:160
#define RELKIND_SEQUENCE
Definition: pg_class.h:162
#define BTEqualStrategyNumber
Definition: stratnum.h:31
void sepgsql_relation_relabel ( Oid  relOid,
const char *  seclabel 
)

Definition at line 520 of file relation.c.

References ereport, errcode(), errmsg(), ERROR, get_rel_relkind(), getObjectIdentity(), pfree(), RelationRelationId, RELKIND_RELATION, RELKIND_SEQUENCE, RELKIND_VIEW, SEPG_CLASS_DB_SEQUENCE, SEPG_CLASS_DB_TABLE, SEPG_CLASS_DB_VIEW, SEPG_DB_TABLE__RELABELFROM, SEPG_DB_TABLE__RELABELTO, SEPG_DB_TABLE__SETATTR, sepgsql_avc_check_perms(), and sepgsql_avc_check_perms_label().

Referenced by sepgsql_object_relabel().

521 {
522  ObjectAddress object;
523  char *audit_name;
524  char relkind;
525  uint16_t tclass = 0;
526 
527  relkind = get_rel_relkind(relOid);
528  if (relkind == RELKIND_RELATION)
529  tclass = SEPG_CLASS_DB_TABLE;
530  else if (relkind == RELKIND_SEQUENCE)
531  tclass = SEPG_CLASS_DB_SEQUENCE;
532  else if (relkind == RELKIND_VIEW)
533  tclass = SEPG_CLASS_DB_VIEW;
534  else
535  ereport(ERROR,
536  (errcode(ERRCODE_WRONG_OBJECT_TYPE),
537  errmsg("cannot set security labels on relations except "
538  "for tables, sequences or views")));
539 
540  object.classId = RelationRelationId;
541  object.objectId = relOid;
542  object.objectSubId = 0;
543  audit_name = getObjectIdentity(&object);
544 
545  /*
546  * check db_xxx:{setattr relabelfrom} permission
547  */
548  sepgsql_avc_check_perms(&object,
549  tclass,
552  audit_name,
553  true);
554 
555  /*
556  * check db_xxx:{relabelto} permission
557  */
559  tclass,
561  audit_name,
562  true);
563  pfree(audit_name);
564 }
bool sepgsql_avc_check_perms_label(const char *tcontext, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:346
char get_rel_relkind(Oid relid)
Definition: lsyscache.c:1769
#define RelationRelationId
Definition: pg_class.h:29
bool sepgsql_avc_check_perms(const ObjectAddress *tobject, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:428
int errcode(int sqlerrcode)
Definition: elog.c:575
#define SEPG_DB_TABLE__SETATTR
Definition: sepgsql.h:140
void pfree(void *pointer)
Definition: mcxt.c:992
#define SEPG_CLASS_DB_SEQUENCE
Definition: sepgsql.h:47
#define ERROR
Definition: elog.h:43
char * getObjectIdentity(const ObjectAddress *object)
#define SEPG_DB_TABLE__RELABELTO
Definition: sepgsql.h:142
#define ereport(elevel, rest)
Definition: elog.h:122
#define SEPG_CLASS_DB_VIEW
Definition: sepgsql.h:53
#define SEPG_DB_TABLE__RELABELFROM
Definition: sepgsql.h:141
#define SEPG_CLASS_DB_TABLE
Definition: sepgsql.h:46
int errmsg(const char *fmt,...)
Definition: elog.c:797
#define RELKIND_VIEW
Definition: pg_class.h:164
#define RELKIND_RELATION
Definition: pg_class.h:160
#define RELKIND_SEQUENCE
Definition: pg_class.h:162
void sepgsql_relation_setattr ( Oid  relOid)

Definition at line 572 of file relation.c.

References AccessShareLock, BTEqualStrategyNumber, ClassOidIndexId, elog, ERROR, get_rel_relkind(), getObjectIdentity(), GETSTRUCT, heap_close, heap_open(), HeapTupleIsValid, NameStr, ObjectIdAttributeNumber, ObjectIdGetDatum, pfree(), RelationRelationId, ReleaseSysCache(), RELKIND_INDEX, RELKIND_RELATION, RELKIND_SEQUENCE, RELKIND_VIEW, RELOID, ScanKeyInit(), SearchSysCache1, SEPG_CLASS_DB_SEQUENCE, SEPG_CLASS_DB_TABLE, SEPG_CLASS_DB_VIEW, SEPG_DB_TABLE__SETATTR, sepgsql_avc_check_perms(), sepgsql_index_modify(), sepgsql_schema_add_name(), sepgsql_schema_remove_name(), sepgsql_schema_rename(), SnapshotSelf, systable_beginscan(), systable_endscan(), and systable_getnext().

Referenced by sepgsql_object_access(), and sepgsql_relation_setattr_extra().

573 {
574  Relation rel;
575  ScanKeyData skey;
576  SysScanDesc sscan;
577  HeapTuple oldtup;
578  HeapTuple newtup;
579  Form_pg_class oldform;
580  Form_pg_class newform;
581  ObjectAddress object;
582  char *audit_name;
583  uint16_t tclass;
584 
585  switch (get_rel_relkind(relOid))
586  {
587  case RELKIND_RELATION:
588  tclass = SEPG_CLASS_DB_TABLE;
589  break;
590  case RELKIND_SEQUENCE:
591  tclass = SEPG_CLASS_DB_SEQUENCE;
592  break;
593  case RELKIND_VIEW:
594  tclass = SEPG_CLASS_DB_VIEW;
595  break;
596  case RELKIND_INDEX:
597  /* deal with indexes specially */
598  sepgsql_index_modify(relOid);
599  return;
600  default:
601  /* other relkinds don't need additional work */
602  return;
603  }
604 
605  /*
606  * Fetch newer catalog
607  */
609 
610  ScanKeyInit(&skey,
612  BTEqualStrategyNumber, F_OIDEQ,
613  ObjectIdGetDatum(relOid));
614 
615  sscan = systable_beginscan(rel, ClassOidIndexId, true,
616  SnapshotSelf, 1, &skey);
617 
618  newtup = systable_getnext(sscan);
619  if (!HeapTupleIsValid(newtup))
620  elog(ERROR, "catalog lookup failed for relation %u", relOid);
621  newform = (Form_pg_class) GETSTRUCT(newtup);
622 
623  /*
624  * Fetch older catalog
625  */
626  oldtup = SearchSysCache1(RELOID, ObjectIdGetDatum(relOid));
627  if (!HeapTupleIsValid(oldtup))
628  elog(ERROR, "cache lookup failed for relation %u", relOid);
629  oldform = (Form_pg_class) GETSTRUCT(oldtup);
630 
631  /*
632  * Does this ALTER command takes operation to namespace?
633  */
634  if (newform->relnamespace != oldform->relnamespace)
635  {
636  sepgsql_schema_remove_name(oldform->relnamespace);
637  sepgsql_schema_add_name(newform->relnamespace);
638  }
639  if (strcmp(NameStr(newform->relname), NameStr(oldform->relname)) != 0)
640  sepgsql_schema_rename(oldform->relnamespace);
641 
642  /*
643  * XXX - In the future version, db_tuple:{use} of system catalog entry
644  * shall be checked, if tablespace configuration is changed.
645  */
646 
647  /*
648  * check db_xxx:{setattr} permission
649  */
650  object.classId = RelationRelationId;
651  object.objectId = relOid;
652  object.objectSubId = 0;
653  audit_name = getObjectIdentity(&object);
654 
655  sepgsql_avc_check_perms(&object,
656  tclass,
658  audit_name,
659  true);
660  pfree(audit_name);
661 
662  ReleaseSysCache(oldtup);
663  systable_endscan(sscan);
665 }
void systable_endscan(SysScanDesc sysscan)
Definition: genam.c:493
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
#define ObjectIdAttributeNumber
Definition: sysattr.h:22
char get_rel_relkind(Oid relid)
Definition: lsyscache.c:1769
#define RelationRelationId
Definition: pg_class.h:29
void sepgsql_schema_add_name(Oid namespaceId)
Definition: schema.c:219
bool sepgsql_avc_check_perms(const ObjectAddress *tobject, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:428
void sepgsql_schema_remove_name(Oid namespaceId)
Definition: schema.c:225
#define AccessShareLock
Definition: lockdefs.h:36
#define heap_close(r, l)
Definition: heapam.h:97
SysScanDesc systable_beginscan(Relation heapRelation, Oid indexId, bool indexOK, Snapshot snapshot, int nkeys, ScanKey key)
Definition: genam.c:322
#define SearchSysCache1(cacheId, key1)
Definition: syscache.h:149
#define SEPG_DB_TABLE__SETATTR
Definition: sepgsql.h:140
HeapTuple systable_getnext(SysScanDesc sysscan)
Definition: genam.c:410
void pfree(void *pointer)
Definition: mcxt.c:992
#define SEPG_CLASS_DB_SEQUENCE
Definition: sepgsql.h:47
#define ObjectIdGetDatum(X)
Definition: postgres.h:515
#define ERROR
Definition: elog.h:43
char * getObjectIdentity(const ObjectAddress *object)
void sepgsql_schema_rename(Oid namespaceId)
Definition: schema.c:231
#define ClassOidIndexId
Definition: indexing.h:112
#define SnapshotSelf
Definition: tqual.h:27
static void sepgsql_index_modify(Oid indexOid)
Definition: relation.c:718
#define SEPG_CLASS_DB_VIEW
Definition: sepgsql.h:53
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1083
Relation heap_open(Oid relationId, LOCKMODE lockmode)
Definition: heapam.c:1287
#define SEPG_CLASS_DB_TABLE
Definition: sepgsql.h:46
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
FormData_pg_class * Form_pg_class
Definition: pg_class.h:95
#define RELKIND_VIEW
Definition: pg_class.h:164
#define NameStr(name)
Definition: c.h:495
#define RELKIND_INDEX
Definition: pg_class.h:161
void ScanKeyInit(ScanKey entry, AttrNumber attributeNumber, StrategyNumber strategy, RegProcedure procedure, Datum argument)
Definition: scankey.c:76
#define elog
Definition: elog.h:219
#define RELKIND_RELATION
Definition: pg_class.h:160
#define RELKIND_SEQUENCE
Definition: pg_class.h:162
#define BTEqualStrategyNumber
Definition: stratnum.h:31
void sepgsql_schema_add_name ( Oid  namespaceId)

Definition at line 219 of file schema.c.

References check_schema_perms(), and SEPG_DB_SCHEMA__ADD_NAME.

Referenced by sepgsql_proc_setattr(), and sepgsql_relation_setattr().

220 {
221  check_schema_perms(namespaceId, SEPG_DB_SCHEMA__ADD_NAME, true);
222 }
static bool check_schema_perms(Oid namespaceId, uint32 required, bool abort_on_violation)
Definition: schema.c:181
#define SEPG_DB_SCHEMA__ADD_NAME
Definition: sepgsql.h:134
void sepgsql_schema_drop ( Oid  namespaceId)

Definition at line 116 of file schema.c.

References ObjectAddress::classId, getObjectIdentity(), NamespaceRelationId, pfree(), SEPG_CLASS_DB_SCHEMA, SEPG_DB_SCHEMA__DROP, and sepgsql_avc_check_perms().

Referenced by sepgsql_object_access().

117 {
118  ObjectAddress object;
119  char *audit_name;
120 
121  /*
122  * check db_schema:{drop} permission
123  */
124  object.classId = NamespaceRelationId;
125  object.objectId = namespaceId;
126  object.objectSubId = 0;
127  audit_name = getObjectIdentity(&object);
128 
129  sepgsql_avc_check_perms(&object,
132  audit_name,
133  true);
134  pfree(audit_name);
135 }
#define SEPG_DB_SCHEMA__DROP
Definition: sepgsql.h:128
#define NamespaceRelationId
Definition: pg_namespace.h:34
bool sepgsql_avc_check_perms(const ObjectAddress *tobject, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:428
#define SEPG_CLASS_DB_SCHEMA
Definition: sepgsql.h:45
void pfree(void *pointer)
Definition: mcxt.c:992
char * getObjectIdentity(const ObjectAddress *object)
void sepgsql_schema_post_create ( Oid  namespaceId)

Definition at line 38 of file schema.c.

References AccessShareLock, appendStringInfo(), BTEqualStrategyNumber, StringInfoData::data, DatabaseRelationId, elog, ERROR, GETSTRUCT, heap_close, heap_open(), HeapTupleIsValid, initStringInfo(), MyDatabaseId, NamespaceOidIndexId, NamespaceRelationId, NameStr, ObjectIdAttributeNumber, ObjectIdGetDatum, pfree(), quote_identifier(), ScanKeyInit(), SEPG_CLASS_DB_SCHEMA, SEPG_DB_SCHEMA__CREATE, sepgsql_avc_check_perms_label(), sepgsql_compute_create(), sepgsql_get_client_label(), sepgsql_get_label(), SEPGSQL_LABEL_TAG, SetSecurityLabel(), SnapshotSelf, systable_beginscan(), systable_endscan(), and systable_getnext().

Referenced by sepgsql_object_access().

39 {
40  Relation rel;
41  ScanKeyData skey;
42  SysScanDesc sscan;
43  HeapTuple tuple;
44  char *tcontext;
45  char *ncontext;
46  const char *nsp_name;
47  ObjectAddress object;
48  Form_pg_namespace nspForm;
49  StringInfoData audit_name;
50 
51  /*
52  * Compute a default security label when we create a new schema object
53  * under the working database.
54  *
55  * XXX - uncoming version of libselinux supports to take object name to
56  * handle special treatment on default security label; such as special
57  * label on "pg_temp" schema.
58  */
60 
61  ScanKeyInit(&skey,
63  BTEqualStrategyNumber, F_OIDEQ,
64  ObjectIdGetDatum(namespaceId));
65 
66  sscan = systable_beginscan(rel, NamespaceOidIndexId, true,
67  SnapshotSelf, 1, &skey);
68  tuple = systable_getnext(sscan);
69  if (!HeapTupleIsValid(tuple))
70  elog(ERROR, "catalog lookup failed for namespace %u", namespaceId);
71 
72  nspForm = (Form_pg_namespace) GETSTRUCT(tuple);
73  nsp_name = NameStr(nspForm->nspname);
74  if (strncmp(nsp_name, "pg_temp_", 8) == 0)
75  nsp_name = "pg_temp";
76  else if (strncmp(nsp_name, "pg_toast_temp_", 14) == 0)
77  nsp_name = "pg_toast_temp";
78 
81  tcontext,
83  nsp_name);
84 
85  /*
86  * check db_schema:{create}
87  */
88  initStringInfo(&audit_name);
89  appendStringInfo(&audit_name, "%s", quote_identifier(nsp_name));
93  audit_name.data,
94  true);
95  systable_endscan(sscan);
97 
98  /*
99  * Assign the default security label on a new procedure
100  */
101  object.classId = NamespaceRelationId;
102  object.objectId = namespaceId;
103  object.objectSubId = 0;
104  SetSecurityLabel(&object, SEPGSQL_LABEL_TAG, ncontext);
105 
106  pfree(ncontext);
107  pfree(tcontext);
108 }
bool sepgsql_avc_check_perms_label(const char *tcontext, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:346
#define NamespaceOidIndexId
Definition: indexing.h:188
#define NamespaceRelationId
Definition: pg_namespace.h:34
void systable_endscan(SysScanDesc sysscan)
Definition: genam.c:493
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
FormData_pg_namespace * Form_pg_namespace
Definition: pg_namespace.h:51
void SetSecurityLabel(const ObjectAddress *object, const char *provider, const char *label)
Definition: seclabel.c:327
const char * quote_identifier(const char *ident)
Definition: ruleutils.c:9968
#define ObjectIdAttributeNumber
Definition: sysattr.h:22
#define DatabaseRelationId
Definition: pg_database.h:29
char * sepgsql_get_label(Oid classId, Oid objectId, int32 subId)
Definition: label.c:455
#define AccessShareLock
Definition: lockdefs.h:36
#define heap_close(r, l)
Definition: heapam.h:97
#define SEPG_CLASS_DB_SCHEMA
Definition: sepgsql.h:45
SysScanDesc systable_beginscan(Relation heapRelation, Oid indexId, bool indexOK, Snapshot snapshot, int nkeys, ScanKey key)
Definition: genam.c:322
HeapTuple systable_getnext(SysScanDesc sysscan)
Definition: genam.c:410
void pfree(void *pointer)
Definition: mcxt.c:992
void appendStringInfo(StringInfo str, const char *fmt,...)
Definition: stringinfo.c:110
#define ObjectIdGetDatum(X)
Definition: postgres.h:515
#define ERROR
Definition: elog.h:43
#define SEPGSQL_LABEL_TAG
Definition: sepgsql.h:23
#define SnapshotSelf
Definition: tqual.h:27
void initStringInfo(StringInfo str)
Definition: stringinfo.c:65
Oid MyDatabaseId
Definition: globals.c:76
Relation heap_open(Oid relationId, LOCKMODE lockmode)
Definition: heapam.c:1287
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
#define SEPG_DB_SCHEMA__CREATE
Definition: sepgsql.h:127
char * sepgsql_get_client_label(void)
Definition: label.c:83
char * sepgsql_compute_create(const char *scontext, const char *tcontext, uint16 tclass, const char *objname)
Definition: selinux.c:837
#define NameStr(name)
Definition: c.h:495
void ScanKeyInit(ScanKey entry, AttrNumber attributeNumber, StrategyNumber strategy, RegProcedure procedure, Datum argument)
Definition: scankey.c:76
#define elog
Definition: elog.h:219
#define BTEqualStrategyNumber
Definition: stratnum.h:31
void sepgsql_schema_relabel ( Oid  namespaceId,
const char *  seclabel 
)

Definition at line 144 of file schema.c.

References ObjectAddress::classId, getObjectIdentity(), NamespaceRelationId, pfree(), SEPG_CLASS_DB_SCHEMA, SEPG_DB_SCHEMA__RELABELFROM, SEPG_DB_SCHEMA__RELABELTO, SEPG_DB_SCHEMA__SETATTR, sepgsql_avc_check_perms(), and sepgsql_avc_check_perms_label().

Referenced by sepgsql_object_relabel().

145 {
146  ObjectAddress object;
147  char *audit_name;
148 
149  object.classId = NamespaceRelationId;
150  object.objectId = namespaceId;
151  object.objectSubId = 0;
152  audit_name = getObjectIdentity(&object);
153 
154  /*
155  * check db_schema:{setattr relabelfrom} permission
156  */
157  sepgsql_avc_check_perms(&object,
161  audit_name,
162  true);
163 
164  /*
165  * check db_schema:{relabelto} permission
166  */
170  audit_name,
171  true);
172  pfree(audit_name);
173 }
bool sepgsql_avc_check_perms_label(const char *tcontext, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:346
#define NamespaceRelationId
Definition: pg_namespace.h:34
bool sepgsql_avc_check_perms(const ObjectAddress *tobject, uint16 tclass, uint32 required, const char *audit_name, bool abort_on_violation)
Definition: uavc.c:428
#define SEPG_CLASS_DB_SCHEMA
Definition: sepgsql.h:45
#define SEPG_DB_SCHEMA__RELABELFROM
Definition: sepgsql.h:131
void pfree(void *pointer)
Definition: mcxt.c:992
char * getObjectIdentity(const ObjectAddress *object)
#define SEPG_DB_SCHEMA__SETATTR
Definition: sepgsql.h:130
#define SEPG_DB_SCHEMA__RELABELTO
Definition: sepgsql.h:132
void sepgsql_schema_remove_name ( Oid  namespaceId)

Definition at line 225 of file schema.c.

References check_schema_perms(), and SEPG_DB_SCHEMA__REMOVE_NAME.

Referenced by sepgsql_proc_setattr(), and sepgsql_relation_setattr().

226 {
228 }
static bool check_schema_perms(Oid namespaceId, uint32 required, bool abort_on_violation)
Definition: schema.c:181
#define SEPG_DB_SCHEMA__REMOVE_NAME
Definition: sepgsql.h:135
void sepgsql_schema_rename ( Oid  namespaceId)

Definition at line 231 of file schema.c.

References check_schema_perms(), SEPG_DB_SCHEMA__ADD_NAME, and SEPG_DB_SCHEMA__REMOVE_NAME.

Referenced by sepgsql_proc_setattr(), and sepgsql_relation_setattr().

232 {
233  check_schema_perms(namespaceId,
236  true);
237 }
static bool check_schema_perms(Oid namespaceId, uint32 required, bool abort_on_violation)
Definition: schema.c:181
#define SEPG_DB_SCHEMA__ADD_NAME
Definition: sepgsql.h:134
#define SEPG_DB_SCHEMA__REMOVE_NAME
Definition: sepgsql.h:135
bool sepgsql_schema_search ( Oid  namespaceId,
bool  abort_on_violation 
)

Definition at line 211 of file schema.c.

References check_schema_perms(), and SEPG_DB_SCHEMA__SEARCH.

Referenced by sepgsql_object_access().

212 {
213  return check_schema_perms(namespaceId,
215  abort_on_violation);
216 }
static bool check_schema_perms(Oid namespaceId, uint32 required, bool abort_on_violation)
Definition: schema.c:181
#define SEPG_DB_SCHEMA__SEARCH
Definition: sepgsql.h:133
void sepgsql_schema_setattr ( Oid  namespaceId)

Definition at line 204 of file schema.c.

References check_schema_perms(), and SEPG_DB_SCHEMA__SETATTR.

Referenced by sepgsql_object_access().

205 {
206  check_schema_perms(namespaceId, SEPG_DB_SCHEMA__SETATTR, true);
207 }
static bool check_schema_perms(Oid namespaceId, uint32 required, bool abort_on_violation)
Definition: schema.c:181
#define SEPG_DB_SCHEMA__SETATTR
Definition: sepgsql.h:130
int sepgsql_set_mode ( int  new_mode)

Definition at line 631 of file selinux.c.

References sepgsql_mode.

Referenced by _PG_init(), and sepgsql_client_auth().

632 {
633  int old_mode = sepgsql_mode;
634 
635  sepgsql_mode = new_mode;
636 
637  return old_mode;
638 }
static int sepgsql_mode
Definition: selinux.c:607