PostgreSQL Source Code  git master
pqexpbuffer.c File Reference
#include "postgres_fe.h"
#include <limits.h>
#include "pqexpbuffer.h"
Include dependency graph for pqexpbuffer.c:

Go to the source code of this file.

Functions

static void markPQExpBufferBroken (PQExpBuffer str)
 
PQExpBuffer createPQExpBuffer (void)
 
void initPQExpBuffer (PQExpBuffer str)
 
void destroyPQExpBuffer (PQExpBuffer str)
 
void termPQExpBuffer (PQExpBuffer str)
 
void resetPQExpBuffer (PQExpBuffer str)
 
int enlargePQExpBuffer (PQExpBuffer str, size_t needed)
 
void printfPQExpBuffer (PQExpBuffer str, const char *fmt,...)
 
void appendPQExpBuffer (PQExpBuffer str, const char *fmt,...)
 
bool appendPQExpBufferVA (PQExpBuffer str, const char *fmt, va_list args)
 
void appendPQExpBufferStr (PQExpBuffer str, const char *data)
 
void appendPQExpBufferChar (PQExpBuffer str, char ch)
 
void appendBinaryPQExpBuffer (PQExpBuffer str, const char *data, size_t datalen)
 

Variables

static const char oom_buffer [1] = ""
 
static const char * oom_buffer_ptr = oom_buffer
 

Function Documentation

◆ appendBinaryPQExpBuffer()

void appendBinaryPQExpBuffer ( PQExpBuffer  str,
const char *  data,
size_t  datalen 
)

Definition at line 397 of file pqexpbuffer.c.

398 {
399  /* Make more room if needed */
400  if (!enlargePQExpBuffer(str, datalen))
401  return;
402 
403  /* OK, append the data */
404  memcpy(str->data + str->len, data, datalen);
405  str->len += datalen;
406 
407  /*
408  * Keep a trailing null in place, even though it's probably useless for
409  * binary data...
410  */
411  str->data[str->len] = '\0';
412 }
const void * data
int enlargePQExpBuffer(PQExpBuffer str, size_t needed)
Definition: pqexpbuffer.c:172

References data, enlargePQExpBuffer(), and generate_unaccent_rules::str.

Referenced by appendPQExpBufferStr(), createViewAsClause(), pg_GSS_error_int(), and pqGets_internal().

◆ appendPQExpBuffer()

void appendPQExpBuffer ( PQExpBuffer  str,
const char *  fmt,
  ... 
)

Definition at line 265 of file pqexpbuffer.c.

266 {
267  int save_errno = errno;
268  va_list args;
269  bool done;
270 
271  if (PQExpBufferBroken(str))
272  return; /* already failed */
273 
274  /* Loop in case we have to retry after enlarging the buffer. */
275  do
276  {
277  errno = save_errno;
278  va_start(args, fmt);
279  done = appendPQExpBufferVA(str, fmt, args);
280  va_end(args);
281  } while (!done);
282 }
static void const char * fmt
va_end(args)
va_start(args, fmt)
bool appendPQExpBufferVA(PQExpBuffer str, const char *fmt, va_list args)
Definition: pqexpbuffer.c:294
#define PQExpBufferBroken(str)
Definition: pqexpbuffer.h:59

References appendPQExpBufferVA(), generate_unaccent_rules::args, fmt, PQExpBufferBroken, generate_unaccent_rules::str, va_end(), and va_start().

Referenced by _getObjectDescription(), _selectOutputSchema(), _selectTableAccessMethod(), _selectTablespace(), add_tablespace_footer(), AddAcl(), addFooterToPublicationDesc(), append_db_pattern_cte(), append_depends_on_extension(), append_rel_pattern_filtered_cte(), append_rel_pattern_raw_cte(), AppendIntegerCommandOption(), AppendPlainCommandOption(), appendReloptionsArray(), AppendStringCommandOption(), binary_upgrade_extension_member(), binary_upgrade_set_pg_class_oids(), binary_upgrade_set_type_oids_by_type_oid(), build_client_final_message(), build_client_first_message(), buildACLCommands(), buildDefaultACLCommands(), buildShSecLabelQuery(), check_for_data_types_usage(), cluster_conn_opts(), compile_relation_list_one_db(), connectFailureMessage(), constructConnStr(), createDummyViewAsClause(), createPartitions(), CreateReplicationSlot(), createViewAsClause(), describeAccessMethods(), describeAggregates(), describeConfigurationParameters(), describeFunctions(), describeOneTableDetails(), describeOneTSConfig(), describeOperators(), describePublications(), DescribeQuery(), describeRoles(), describeSubscriptions(), describeTablespaces(), describeTypes(), DropReplicationSlot(), dumpAccessMethod(), dumpACL(), dumpAgg(), dumpAttrDef(), dumpBaseType(), dumpCast(), dumpCollation(), dumpCommentExtended(), dumpCompositeType(), dumpCompositeTypeColComments(), dumpConstraint(), dumpConversion(), dumpDatabase(), dumpDatabaseConfig(), dumpDefaultACL(), dumpDomain(), dumpEnumType(), dumpEventTrigger(), dumpExtension(), dumpForeignDataWrapper(), dumpForeignServer(), dumpFunc(), dumpIndex(), dumpIndexAttach(), dumpLO(), dumpNamespace(), dumpOpclass(), dumpOpfamily(), dumpOpr(), dumpPolicy(), dumpProcLang(), dumpPublication(), dumpPublicationNamespace(), dumpPublicationTable(), dumpRangeType(), dumpRoleMembership(), dumpRoles(), dumpRule(), dumpSecLabel(), dumpSequence(), dumpSequenceData(), dumpShellType(), dumpStatisticsExt(), dumpStdStrings(), dumpSubscription(), dumpTableAttach(), dumpTableComment(), dumpTableConstraintComment(), dumpTableData(), dumpTableData_copy(), dumpTableData_insert(), dumpTableSchema(), dumpTableSecLabel(), dumpTablespaces(), dumpTransform(), dumpTrigger(), dumpTSConfig(), dumpTSDictionary(), dumpTSParser(), dumpTSTemplate(), dumpUndefinedType(), dumpUserConfig(), dumpUserMappings(), emitHostIdentityInfo(), emitShSecLabels(), ExecQueryUsingCursor(), executeMetaCommand(), expand_table_name_patterns(), fmtQualifiedId(), format_aggregate_signature(), format_function_arguments(), format_function_signature(), GenerateRecoveryConfig(), get_create_object_cmd(), get_db_conn(), get_language_name(), getAggregates(), getAnotherTuple(), getCasts(), getConstraints(), getFormattedTypeName(), getFuncs(), getIndexes(), getParamDescriptions(), getPolicies(), getRowDescriptions(), GetSlotInformation(), getSubscriptions(), getTableAttrs(), getTables(), getTransforms(), getTriggers(), initCreatePKeys(), initCreateTables(), libpqrcv_get_conninfo(), listAllDbs(), listCasts(), listCollations(), listConversions(), listDbRoleSettings(), listDomains(), listEventTriggers(), listExtendedStats(), listForeignDataWrappers(), listForeignServers(), listForeignTables(), listLanguages(), listLargeObjects(), listOperatorClasses(), listOperatorFamilies(), listOpFamilyFunctions(), listOpFamilyOperators(), listPartitionedTables(), listPublications(), listSchemas(), listTables(), listTSDictionaries(), listUserMappings(), lockTableForWorker(), lookup_object_oid(), main(), makeAlterConfigCommand(), objectDescription(), parseAclItem(), permissionsList(), pg_fe_getusername(), pg_GSS_error(), pg_local_sendauth(), pq_verify_peer_name_matches_certificate(), pqBuildErrorMessage3(), pqGetNegotiateProtocolVersion3(), pqsecure_open_gss(), prepare_btree_command(), prepare_heap_command(), prepare_vacuum_command(), printACLColumn(), printVerboseErrorMessages(), processSQLNamePattern(), ReceiveArchiveStreamChunk(), ReceiveBackupManifestInMemoryChunk(), refreshMatViewData(), reportErrorPosition(), RestoreArchive(), run_reindex_command(), runInitSteps(), runPgDump(), setup_connection(), StreamLogicalLog(), syntax_error(), and vacuum_one_database().

◆ appendPQExpBufferChar()

void appendPQExpBufferChar ( PQExpBuffer  str,
char  ch 
)

Definition at line 378 of file pqexpbuffer.c.

379 {
380  /* Make more room if needed */
381  if (!enlargePQExpBuffer(str, 1))
382  return;
383 
384  /* OK, append the character */
385  str->data[str->len] = ch;
386  str->len++;
387  str->data[str->len] = '\0';
388 }

References enlargePQExpBuffer(), and generate_unaccent_rules::str.

Referenced by _doSetSessionAuth(), AddAcl(), append_db_pattern_cte(), append_rel_pattern_raw_cte(), appendConnStrVal(), appendPGArray(), AppendPlainCommandOption(), appendPsqlMetaConnect(), appendShellStringNoError(), appendStringLiteralConn(), appendStringLiteralDQ(), binary_upgrade_set_pg_class_oids(), build_client_first_message(), cluster_conn_opts(), cluster_one_database(), conninfo_uri_parse_options(), constructConnStr(), createDummyViewAsClause(), createPartitions(), CreateReplicationSlot(), dequoteAclUserName(), describeOneTableDetails(), describeRoles(), do_edit(), dumpCompositeType(), dumpConstraint(), dumpEnumType(), dumpEventTrigger(), dumpExtension(), dumpPublication(), dumpRule(), dumpTableData_insert(), dumpTableSchema(), dumpUserConfig(), ExecuteSimpleCommands(), fmtCopyColumnList(), fmtId(), format_aggregate_signature(), format_function_signature(), gather_boolean_expression(), GenerateRecoveryConfig(), get_create_object_cmd(), getAggregates(), getConstraints(), getFuncs(), getIndexes(), getNamespaces(), getPolicies(), getTableAttrs(), getTriggers(), indent_lines(), libpq_append_conn_error(), libpq_append_error(), main(), MainLoop(), minimal_error_message(), output_completion_banner(), patternToSQLRegex(), pg_append_history(), pg_GSS_error(), pg_GSS_error_int(), pq_verify_peer_name_matches_certificate(), pqBuildErrorMessage3(), PQconnectPoll(), pqGetNegotiateProtocolVersion3(), prepare_vacuum_command(), processSQLNamePattern(), quoteAclUserName(), reportErrorPosition(), run_reindex_command(), and StreamLogicalLog().

◆ appendPQExpBufferStr()

void appendPQExpBufferStr ( PQExpBuffer  str,
const char *  data 
)

Definition at line 367 of file pqexpbuffer.c.

368 {
370 }
void appendBinaryPQExpBuffer(PQExpBuffer str, const char *data, size_t datalen)
Definition: pqexpbuffer.c:397

References appendBinaryPQExpBuffer(), data, and generate_unaccent_rules::str.

Referenced by _doSetSessionAuth(), _getObjectDescription(), _selectOutputSchema(), _selectTablespace(), add_role_attribute(), AddAcl(), append_db_pattern_cte(), append_rel_pattern_filtered_cte(), append_rel_pattern_raw_cte(), appendConnStrVal(), appendPGArray(), AppendPlainCommandOption(), appendPsqlMetaConnect(), appendQualifiedRelation(), appendReloptionsArray(), appendShellStringNoError(), appendStringLiteralDQ(), binary_upgrade_extension_member(), binary_upgrade_set_pg_class_oids(), binary_upgrade_set_type_oids_by_type_oid(), build_client_final_message(), build_client_first_message(), buildACLCommands(), buildMatViewRefreshDependencies(), check_for_incompatible_polymorphics(), cluster_conn_opts(), cluster_one_database(), collectComments(), collectSecLabels(), compile_database_list(), compile_relation_list_one_db(), connectDBStart(), conninfo_uri_parse_options(), copy_previous_query(), create_sql_command(), createDummyViewAsClause(), createPartitions(), CreateReplicationSlot(), describeAccessMethods(), describeAggregates(), describeConfigurationParameters(), describeFunctions(), describeOneTableDetails(), describeOperators(), describePublications(), DescribeQuery(), describeRoles(), describeSubscriptions(), describeTableDetails(), describeTablespaces(), describeTypes(), do_copy(), do_edit(), dumpAccessMethod(), dumpACL(), dumpAgg(), dumpBaseType(), dumpCast(), dumpCollation(), dumpCommentExtended(), dumpCompositeType(), dumpCompositeTypeColComments(), dumpConstraint(), dumpConversion(), dumpDatabase(), dumpDatabaseConfig(), dumpDomain(), dumpEncoding(), dumpEnumType(), dumpEventTrigger(), dumpExtension(), dumpForeignDataWrapper(), dumpForeignServer(), dumpFunc(), dumpNamespace(), dumpOpclass(), dumpOpfamily(), dumpOpr(), dumpPolicy(), dumpProcLang(), dumpPublication(), dumpPublicationTable(), dumpRangeType(), dumpRoleMembership(), dumpRoles(), dumpRule(), dumpSearchPath(), dumpSecLabel(), dumpSequence(), dumpSequenceData(), dumpSubscription(), dumpTable(), dumpTableAttach(), dumpTableComment(), dumpTableData_copy(), dumpTableData_insert(), dumpTableSchema(), dumpTableSecLabel(), dumpTablespaces(), dumpTransform(), dumpTrigger(), dumpTSConfig(), dumpTSDictionary(), dumpUserConfig(), dumpUserMappings(), emitShSecLabels(), ensureCleanShutdown(), exec_command_ef_ev(), expand_dbname_patterns(), expand_extension_name_patterns(), expand_foreign_server_name_patterns(), expand_schema_name_patterns(), fmtCopyColumnList(), fmtId(), fmtQualifiedId(), format_aggregate_signature(), format_function_arguments(), format_function_signature(), gather_boolean_expression(), generate_old_dump(), GenerateRecoveryConfig(), get_create_object_cmd(), get_db_conn(), get_parallel_object_list(), getAccessMethods(), getAdditionalACLs(), getAggregates(), getCasts(), getCollations(), getConstraints(), getConversions(), getDefaultACLs(), getDependencies(), getDomainConstraints(), getEventTriggers(), getExtendedStatistics(), getExtensionMembership(), getExtensions(), getForeignDataWrappers(), getForeignServers(), getFuncs(), getIndexes(), getInherits(), getLOs(), getNamespaces(), getOpclasses(), getOperators(), getOpfamilies(), getPolicies(), getProcLangs(), getPublicationNamespaces(), getPublications(), getPublicationTables(), getRestoreCommand(), getRules(), gets_fromFile(), getSubscriptions(), getTableAttrs(), getTables(), getTransforms(), getTSConfigurations(), getTSDictionaries(), getTSParsers(), getTSTemplates(), getTypes(), indent_lines(), initCreatePKeys(), listAllDbs(), listCasts(), listCollations(), listConversions(), listDbRoleSettings(), listDefaultACLs(), listDomains(), listEventTriggers(), listExtendedStats(), listExtensionContents(), listExtensions(), listForeignDataWrappers(), listForeignServers(), listForeignTables(), listLanguages(), listLargeObjects(), listOperatorClasses(), listOperatorFamilies(), listOpFamilyFunctions(), listOpFamilyOperators(), listPartitionedTables(), listPublications(), listSchemas(), listTables(), listTSConfigs(), listTSConfigsVerbose(), listTSDictionaries(), listTSParsers(), listTSParsersVerbose(), listTSTemplates(), listUserMappings(), lookup_object_oid(), main(), makeAlterConfigCommand(), minimal_error_message(), objectDescription(), output_completion_banner(), patternToSQLRegex(), permissionsList(), pg_append_history(), pg_fe_sendauth(), pg_GSS_write(), pg_SASL_init(), pgtls_read(), pgtls_write(), pqBuildErrorMessage3(), pqCheckInBufferSpace(), pqCheckOutBufferSpace(), pqGetErrorNotice3(), pqGetNegotiateProtocolVersion3(), PQpipelineSync(), pqSaveWriteError(), prepare_vacuum_command(), printVerboseErrorMessages(), processSQLNamePattern(), reportErrorPosition(), RestoreArchive(), run_reindex_command(), runInitSteps(), runPgDump(), setup_connection(), StreamLogicalLog(), and vacuum_one_database().

◆ appendPQExpBufferVA()

bool appendPQExpBufferVA ( PQExpBuffer  str,
const char *  fmt,
va_list  args 
)

Definition at line 294 of file pqexpbuffer.c.

295 {
296  size_t avail;
297  size_t needed;
298  int nprinted;
299 
300  /*
301  * Try to format the given string into the available space; but if there's
302  * hardly any space, don't bother trying, just enlarge the buffer first.
303  */
304  if (str->maxlen > str->len + 16)
305  {
306  avail = str->maxlen - str->len;
307 
308  nprinted = vsnprintf(str->data + str->len, avail, fmt, args);
309 
310  /*
311  * If vsnprintf reports an error, fail (we assume this means there's
312  * something wrong with the format string).
313  */
314  if (unlikely(nprinted < 0))
315  {
317  return true;
318  }
319 
320  if ((size_t) nprinted < avail)
321  {
322  /* Success. Note nprinted does not include trailing null. */
323  str->len += nprinted;
324  return true;
325  }
326 
327  /*
328  * We assume a C99-compliant vsnprintf, so believe its estimate of the
329  * required space, and add one for the trailing null. (If it's wrong,
330  * the logic will still work, but we may loop multiple times.)
331  *
332  * Choke if the required space would exceed INT_MAX, since str->maxlen
333  * can't represent more than that.
334  */
335  if (unlikely(nprinted > INT_MAX - 1))
336  {
338  return true;
339  }
340  needed = nprinted + 1;
341  }
342  else
343  {
344  /*
345  * We have to guess at how much to enlarge, since we're skipping the
346  * formatting work. Fortunately, because of enlargePQExpBuffer's
347  * preference for power-of-2 sizes, this number isn't very sensitive;
348  * the net effect is that we'll double the buffer size before trying
349  * to run vsnprintf, which seems sensible.
350  */
351  needed = 32;
352  }
353 
354  /* Increase the buffer size and try again. */
355  if (!enlargePQExpBuffer(str, needed))
356  return true; /* oops, out of memory */
357 
358  return false;
359 }
#define unlikely(x)
Definition: c.h:295
#define vsnprintf
Definition: port.h:237
static void markPQExpBufferBroken(PQExpBuffer str)
Definition: pqexpbuffer.c:50

References generate_unaccent_rules::args, enlargePQExpBuffer(), fmt, markPQExpBufferBroken(), generate_unaccent_rules::str, unlikely, and vsnprintf.

Referenced by appendPQExpBuffer(), libpq_append_conn_error(), libpq_append_error(), and printfPQExpBuffer().

◆ createPQExpBuffer()

PQExpBuffer createPQExpBuffer ( void  )

Definition at line 72 of file pqexpbuffer.c.

73 {
75 
77  if (res != NULL)
79 
80  return res;
81 }
#define malloc(a)
Definition: header.h:50
void initPQExpBuffer(PQExpBuffer str)
Definition: pqexpbuffer.c:90
PQExpBufferData * PQExpBuffer
Definition: pqexpbuffer.h:51

References initPQExpBuffer(), malloc, and res.

Referenced by _doSetSessionAuth(), _selectOutputSchema(), _selectTableAccessMethod(), _selectTablespace(), _WriteLOData(), append_depends_on_extension(), appendStringLiteralDQ(), binary_upgrade_set_pg_class_oids(), binary_upgrade_set_type_oids_by_type_oid(), buildACLCommands(), buildDefaultACLCommands(), buildMatViewRefreshDependencies(), buildShSecLabels(), cluster_conn_opts(), collectComments(), collectSecLabels(), constructConnStr(), createDummyViewAsClause(), CreateReplicationSlot(), createViewAsClause(), DropReplicationSlot(), dropRoles(), dump_lo_buf(), dumpAccessMethod(), dumpACL(), dumpAgg(), dumpAttrDef(), dumpBaseType(), dumpCast(), dumpCollation(), dumpCommentExtended(), dumpCompositeType(), dumpCompositeTypeColComments(), dumpConstraint(), dumpConversion(), dumpDatabase(), dumpDatabaseConfig(), dumpDefaultACL(), dumpDomain(), dumpEncoding(), dumpEnumType(), dumpEventTrigger(), dumpExtension(), dumpForeignDataWrapper(), dumpForeignServer(), dumpFunc(), dumpIndex(), dumpIndexAttach(), dumpLO(), dumpNamespace(), dumpOpclass(), dumpOpfamily(), dumpOpr(), dumpPolicy(), dumpProcLang(), dumpPublication(), dumpPublicationNamespace(), dumpPublicationTable(), dumpRangeType(), dumpRoleGUCPrivs(), dumpRoleMembership(), dumpRoles(), dumpRule(), dumpSearchPath(), dumpSecLabel(), dumpSequence(), dumpSequenceData(), dumpShellType(), dumpStatisticsExt(), dumpStdStrings(), dumpSubscription(), dumpTable(), dumpTableAttach(), dumpTableComment(), dumpTableConstraintComment(), dumpTableData(), dumpTableData_copy(), dumpTableData_insert(), dumpTableSchema(), dumpTableSecLabel(), dumpTablespaces(), dumpTransform(), dumpTrigger(), dumpTSConfig(), dumpTSDictionary(), dumpTSParser(), dumpTSTemplate(), dumpUndefinedType(), dumpUserConfig(), dumpUserMappings(), ensureCleanShutdown(), exec_command_sf_sv(), ExecuteSimpleCommands(), expand_dbname_patterns(), expand_extension_name_patterns(), expand_foreign_server_name_patterns(), expand_schema_name_patterns(), expand_table_name_patterns(), fmtQualifiedId(), gather_boolean_expression(), GenerateRecoveryConfig(), get_create_object_cmd(), get_language_name(), getAccessMethods(), getAdditionalACLs(), getAggregates(), getCasts(), getCollations(), getConstraints(), getConversions(), getDefaultACLs(), getDependencies(), getDomainConstraints(), getEventTriggers(), getExtendedStatistics(), getExtensionMembership(), getExtensions(), getForeignDataWrappers(), getForeignServers(), getFormattedTypeName(), getFuncs(), getIndexes(), getInherits(), getLOs(), getNamespaces(), getOpclasses(), getOperators(), getOpfamilies(), getPolicies(), getProcLangs(), getPublicationNamespaces(), getPublications(), getPublicationTables(), getRestoreCommand(), getRules(), gets_fromFile(), GetSlotInformation(), getSubscriptions(), getTableAttrs(), getTables(), getTransforms(), getTriggers(), getTSConfigurations(), getTSDictionaries(), getTSParsers(), getTSTemplates(), getTypes(), lockTableForWorker(), lookup_object_oid(), main(), MainLoop(), minimal_error_message(), printVerboseErrorMessages(), processExtensionTables(), ReceiveArchiveStreamChunk(), refreshMatViewData(), RestoreArchive(), runPgDump(), setup_connection(), and StreamLogicalLog().

◆ destroyPQExpBuffer()

void destroyPQExpBuffer ( PQExpBuffer  str)

Definition at line 114 of file pqexpbuffer.c.

115 {
116  if (str)
117  {
119  free(str);
120  }
121 }
#define free(a)
Definition: header.h:65
void termPQExpBuffer(PQExpBuffer str)
Definition: pqexpbuffer.c:129

References free, generate_unaccent_rules::str, and termPQExpBuffer().

Referenced by _doSetSessionAuth(), _selectOutputSchema(), _selectTableAccessMethod(), _selectTablespace(), _WriteLOData(), append_depends_on_extension(), appendStringLiteralDQ(), BaseBackup(), binary_upgrade_set_pg_class_oids(), binary_upgrade_set_type_oids_by_type_oid(), buildACLCommands(), buildDefaultACLCommands(), buildMatViewRefreshDependencies(), buildShSecLabels(), collectComments(), collectSecLabels(), constructConnStr(), CreateReplicationSlot(), createViewAsClause(), DeCloneArchive(), DropReplicationSlot(), dropRoles(), dump_lo_buf(), dumpAccessMethod(), dumpACL(), dumpAgg(), dumpAttrDef(), dumpBaseType(), dumpCast(), dumpCollation(), dumpCommentExtended(), dumpCompositeType(), dumpCompositeTypeColComments(), dumpConstraint(), dumpConversion(), dumpDatabase(), dumpDatabaseConfig(), dumpDefaultACL(), dumpDomain(), dumpEncoding(), dumpEnumType(), dumpEventTrigger(), dumpExtension(), dumpForeignDataWrapper(), dumpForeignServer(), dumpFunc(), dumpIndex(), dumpIndexAttach(), dumpLO(), dumpNamespace(), dumpOpclass(), dumpOpfamily(), dumpOpr(), dumpPolicy(), dumpProcLang(), dumpPublication(), dumpPublicationNamespace(), dumpPublicationTable(), dumpRangeType(), dumpRoleGUCPrivs(), dumpRoleMembership(), dumpRoles(), dumpRule(), dumpSearchPath(), dumpSecLabel(), dumpSequence(), dumpSequenceData(), dumpShellType(), dumpStatisticsExt(), dumpStdStrings(), dumpSubscription(), dumpTable(), dumpTableAttach(), dumpTableComment(), dumpTableConstraintComment(), dumpTableData(), dumpTableData_copy(), dumpTableData_insert(), dumpTableSchema(), dumpTableSecLabel(), dumpTablespaces(), dumpTransform(), dumpTrigger(), dumpTSConfig(), dumpTSDictionary(), dumpTSParser(), dumpTSTemplate(), dumpUndefinedType(), dumpUserConfig(), dumpUserMappings(), ensureCleanShutdown(), exec_command_sf_sv(), expand_dbname_patterns(), expand_extension_name_patterns(), expand_foreign_server_name_patterns(), expand_schema_name_patterns(), expand_table_name_patterns(), fmtQualifiedId(), get_create_object_cmd(), get_language_name(), getAccessMethods(), getAdditionalACLs(), getAggregates(), getCasts(), getCollations(), getConstraints(), getConversions(), getDefaultACLs(), getDependencies(), getDomainConstraints(), getEventTriggers(), getExtendedStatistics(), getExtensionMembership(), getExtensions(), getForeignDataWrappers(), getForeignServers(), getFormattedTypeName(), getFuncs(), getIndexes(), getInherits(), getLOs(), getNamespaces(), getOpclasses(), getOperators(), getOpfamilies(), getPolicies(), getProcLangs(), getPublicationNamespaces(), getPublications(), getPublicationTables(), getRestoreCommand(), getRules(), GetSlotInformation(), getSubscriptions(), getTableAttrs(), getTables(), getTransforms(), getTriggers(), getTSConfigurations(), getTSDictionaries(), getTSParsers(), getTSTemplates(), getTypes(), ignore_boolean_expression(), is_true_boolean_expression(), lockTableForWorker(), lookup_object_oid(), main(), MainLoop(), minimal_error_message(), processExtensionTables(), ReceiveArchiveStream(), refreshMatViewData(), RestoreArchive(), runPgDump(), setup_connection(), and StreamLogicalLog().

◆ enlargePQExpBuffer()

int enlargePQExpBuffer ( PQExpBuffer  str,
size_t  needed 
)

Definition at line 172 of file pqexpbuffer.c.

173 {
174  size_t newlen;
175  char *newdata;
176 
177  if (PQExpBufferBroken(str))
178  return 0; /* already failed */
179 
180  /*
181  * Guard against ridiculous "needed" values, which can occur if we're fed
182  * bogus data. Without this, we can get an overflow or infinite loop in
183  * the following.
184  */
185  if (needed >= ((size_t) INT_MAX - str->len))
186  {
188  return 0;
189  }
190 
191  needed += str->len + 1; /* total space required now */
192 
193  /* Because of the above test, we now have needed <= INT_MAX */
194 
195  if (needed <= str->maxlen)
196  return 1; /* got enough space already */
197 
198  /*
199  * We don't want to allocate just a little more space with each append;
200  * for efficiency, double the buffer size each time it overflows.
201  * Actually, we might need to more than double it if 'needed' is big...
202  */
203  newlen = (str->maxlen > 0) ? (2 * str->maxlen) : 64;
204  while (needed > newlen)
205  newlen = 2 * newlen;
206 
207  /*
208  * Clamp to INT_MAX in case we went past it. Note we are assuming here
209  * that INT_MAX <= UINT_MAX/2, else the above loop could overflow. We
210  * will still have newlen >= needed.
211  */
212  if (newlen > (size_t) INT_MAX)
213  newlen = (size_t) INT_MAX;
214 
215  newdata = (char *) realloc(str->data, newlen);
216  if (newdata != NULL)
217  {
218  str->data = newdata;
219  str->maxlen = newlen;
220  return 1;
221  }
222 
224  return 0;
225 }
#define realloc(a, b)
Definition: header.h:60

References markPQExpBufferBroken(), PQExpBufferBroken, realloc, and generate_unaccent_rules::str.

Referenced by appendBinaryPQExpBuffer(), appendByteaLiteral(), appendPQExpBufferChar(), appendPQExpBufferVA(), appendStringLiteral(), appendStringLiteralConn(), build_client_final_message(), and passwordFromFile().

◆ initPQExpBuffer()

void initPQExpBuffer ( PQExpBuffer  str)

Definition at line 90 of file pqexpbuffer.c.

91 {
92  str->data = (char *) malloc(INITIAL_EXPBUFFER_SIZE);
93  if (str->data == NULL)
94  {
95  str->data = unconstify(char *, oom_buffer_ptr); /* see comment above */
96  str->maxlen = 0;
97  str->len = 0;
98  }
99  else
100  {
101  str->maxlen = INITIAL_EXPBUFFER_SIZE;
102  str->len = 0;
103  str->data[0] = '\0';
104  }
105 }
#define unconstify(underlying_type, expr)
Definition: c.h:1232
static const char * oom_buffer_ptr
Definition: pqexpbuffer.c:41
#define INITIAL_EXPBUFFER_SIZE
Definition: pqexpbuffer.h:76

References INITIAL_EXPBUFFER_SIZE, malloc, oom_buffer_ptr, generate_unaccent_rules::str, and unconstify.

Referenced by _printTocEntry(), _reconnectToDB(), add_tablespace_footer(), append_database_pattern(), append_relation_pattern_helper(), append_schema_pattern(), appendPsqlMetaConnect(), appendQualifiedRelation(), BaseBackup(), build_client_final_message(), build_client_first_message(), check_for_data_types_usage(), check_for_incompatible_polymorphics(), cluster_one_database(), compile_database_list(), compile_relation_list_one_db(), conninfo_uri_parse_options(), create_sql_command(), createPartitions(), createPQExpBuffer(), describeAccessMethods(), describeAggregates(), describeConfigurationParameters(), describeFunctions(), describeOneTableDetails(), describeOneTSConfig(), describeOneTSParser(), describeOperators(), describePublications(), DescribeQuery(), describeRoles(), describeSubscriptions(), describeTableDetails(), describeTablespaces(), describeTypes(), do_copy(), exec_command_password(), ExecQueryUsingCursor(), executeMetaCommand(), expand_schema_name_patterns(), expand_table_name_patterns(), format_aggregate_signature(), format_function_arguments(), format_function_signature(), generate_old_dump(), GenerateRecoveryConfig(), get_db_conn(), get_parallel_object_list(), getCasts(), getParameterStatus(), getTransforms(), helpSQL(), helpVariables(), indent_lines(), initCreatePKeys(), initCreateTables(), initGenerateDataClientSide(), initGenerateDataServerSide(), libpqrcv_get_conninfo(), listAllDbs(), listCasts(), listCollations(), listConversions(), listDbRoleSettings(), listDefaultACLs(), listDomains(), listEventTriggers(), listExtendedStats(), listExtensionContents(), listExtensions(), listForeignDataWrappers(), listForeignServers(), listForeignTables(), listLanguages(), listLargeObjects(), listOneExtensionContents(), listOperatorClasses(), listOperatorFamilies(), listOpFamilyFunctions(), listOpFamilyOperators(), listPartitionedTables(), listPublications(), listSchemas(), listTables(), listTSConfigs(), listTSConfigsVerbose(), listTSDictionaries(), listTSParsers(), listTSParsersVerbose(), listTSTemplates(), listUserMappings(), main(), makeEmptyPGconn(), objectDescription(), old_9_6_invalidate_hash_indexes(), output_completion_banner(), ParseScript(), passwordFromFile(), patternToSQLRegex(), permissionsList(), pg_SASL_init(), PQconndefaults(), PQconninfo(), PQconninfoParse(), pqGetErrorNotice3(), pqGetNegotiateProtocolVersion3(), PQresultVerboseErrorMessage(), process_backslash_command(), processSQLNamePattern(), psql_get_variable(), ReceiveTarFile(), report_extension_updates(), resetPQExpBuffer(), run_reindex_command(), runInitSteps(), slashUsage(), syntax_error(), usage(), vacuum_one_database(), and validateSQLNamePattern().

◆ markPQExpBufferBroken()

static void markPQExpBufferBroken ( PQExpBuffer  str)
static

Definition at line 50 of file pqexpbuffer.c.

51 {
52  if (str->data != oom_buffer)
53  free(str->data);
54 
55  /*
56  * Casting away const here is a bit ugly, but it seems preferable to not
57  * marking oom_buffer const. We want to do that to encourage the compiler
58  * to put oom_buffer in read-only storage, so that anyone who tries to
59  * scribble on a broken PQExpBuffer will get a failure.
60  */
61  str->data = unconstify(char *, oom_buffer_ptr);
62  str->len = 0;
63  str->maxlen = 0;
64 }
static const char oom_buffer[1]
Definition: pqexpbuffer.c:38

References free, oom_buffer, oom_buffer_ptr, generate_unaccent_rules::str, and unconstify.

Referenced by appendPQExpBufferVA(), and enlargePQExpBuffer().

◆ printfPQExpBuffer()

void printfPQExpBuffer ( PQExpBuffer  str,
const char *  fmt,
  ... 
)

Definition at line 235 of file pqexpbuffer.c.

236 {
237  int save_errno = errno;
238  va_list args;
239  bool done;
240 
242 
243  if (PQExpBufferBroken(str))
244  return; /* already failed */
245 
246  /* Loop in case we have to retry after enlarging the buffer. */
247  do
248  {
249  errno = save_errno;
250  va_start(args, fmt);
251  done = appendPQExpBufferVA(str, fmt, args);
252  va_end(args);
253  } while (!done);
254 }
void resetPQExpBuffer(PQExpBuffer str)
Definition: pqexpbuffer.c:146

References appendPQExpBufferVA(), generate_unaccent_rules::args, fmt, PQExpBufferBroken, resetPQExpBuffer(), generate_unaccent_rules::str, va_end(), and va_start().

Referenced by add_tablespace_footer(), addFooterToPublicationDesc(), binary_upgrade_set_type_oids_by_type_oid(), buildACLCommands(), createPartitions(), describeAccessMethods(), describeAggregates(), describeConfigurationParameters(), describeFunctions(), describeOneTableDetails(), describeOneTSConfig(), describeOneTSParser(), describeOperators(), describePublications(), DescribeQuery(), describeRoles(), describeSubscriptions(), describeTableDetails(), describeTablespaces(), describeTypes(), do_copy(), dropRoles(), dumpAgg(), dumpBaseType(), dumpCompositeType(), dumpDatabaseConfig(), dumpDomain(), dumpEnumType(), dumpFunc(), dumpOpr(), dumpRangeType(), dumpRoleMembership(), dumpRoles(), dumpRule(), dumpTable(), dumpTableAttach(), dumpUserConfig(), exec_command_password(), executeMetaCommand(), get_create_object_cmd(), get_next_possible_free_pg_type_oid(), getAdditionalACLs(), getDomainConstraints(), getPolicies(), getTableAttrs(), initCreateTables(), initGenerateDataClientSide(), initGenerateDataServerSide(), listAllDbs(), listCasts(), listCollations(), listConversions(), listDbRoleSettings(), listDefaultACLs(), listDomains(), listEventTriggers(), listExtendedStats(), listExtensionContents(), listExtensions(), listForeignDataWrappers(), listForeignServers(), listForeignTables(), listLanguages(), listLargeObjects(), listOneExtensionContents(), listOperatorClasses(), listOperatorFamilies(), listOpFamilyFunctions(), listOpFamilyOperators(), listPartitionedTables(), listPublications(), listSchemas(), listTables(), listTSConfigs(), listTSConfigsVerbose(), listTSDictionaries(), listTSParsers(), listTSParsersVerbose(), listTSTemplates(), listUserMappings(), main(), minimal_error_message(), parseAclItem(), permissionsList(), printVerboseErrorMessages(), processExtensionTables(), and syntax_error().

◆ resetPQExpBuffer()

◆ termPQExpBuffer()

void termPQExpBuffer ( PQExpBuffer  str)

Definition at line 129 of file pqexpbuffer.c.

130 {
131  if (str->data != oom_buffer)
132  free(str->data);
133  /* just for luck, make the buffer validly empty. */
134  str->data = unconstify(char *, oom_buffer_ptr); /* see comment above */
135  str->maxlen = 0;
136  str->len = 0;
137 }

References free, oom_buffer, oom_buffer_ptr, generate_unaccent_rules::str, and unconstify.

Referenced by _printTocEntry(), _reconnectToDB(), add_tablespace_footer(), append_database_pattern(), append_relation_pattern_helper(), append_schema_pattern(), appendPsqlMetaConnect(), appendQualifiedRelation(), build_client_final_message(), build_client_first_message(), check_for_data_types_usage(), check_for_incompatible_polymorphics(), cluster_one_database(), compile_database_list(), compile_relation_list_one_db(), conninfo_uri_parse_options(), createPartitions(), describeAccessMethods(), describeAggregates(), describeConfigurationParameters(), describeFunctions(), describeOneTableDetails(), describeOneTSConfig(), describeOneTSParser(), describeOperators(), describePublications(), DescribeQuery(), describeRoles(), describeSubscriptions(), describeTableDetails(), describeTablespaces(), describeTypes(), destroyPQExpBuffer(), do_copy(), exec_command_password(), ExecQueryUsingCursor(), executeMetaCommand(), expand_schema_name_patterns(), expand_table_name_patterns(), free_command(), freePGconn(), generate_old_dump(), GenerateRecoveryConfig(), get_db_conn(), get_parallel_object_list(), getParameterStatus(), helpSQL(), helpVariables(), indent_lines(), initCreatePKeys(), initCreateTables(), initGenerateDataClientSide(), initGenerateDataServerSide(), libpqrcv_get_conninfo(), listAllDbs(), listCasts(), listCollations(), listConversions(), listDbRoleSettings(), listDefaultACLs(), listDomains(), listEventTriggers(), listExtendedStats(), listExtensionContents(), listExtensions(), listForeignDataWrappers(), listForeignServers(), listForeignTables(), listLanguages(), listLargeObjects(), listOneExtensionContents(), listOperatorClasses(), listOperatorFamilies(), listOpFamilyFunctions(), listOpFamilyOperators(), listPartitionedTables(), listPublications(), listSchemas(), listTables(), listTSConfigs(), listTSConfigsVerbose(), listTSDictionaries(), listTSParsers(), listTSParsersVerbose(), listTSTemplates(), listUserMappings(), main(), objectDescription(), old_9_6_invalidate_hash_indexes(), output_completion_banner(), ParseScript(), passwordFromFile(), patternToSQLRegex(), permissionsList(), pg_SASL_init(), PQconndefaults(), PQconninfo(), PQconninfoParse(), pqGetErrorNotice3(), pqGetNegotiateProtocolVersion3(), PQresultVerboseErrorMessage(), process_backslash_command(), processSQLNamePattern(), ReceiveTarFile(), report_extension_updates(), run_reindex_command(), runInitSteps(), slashUsage(), syntax_error(), usage(), vacuum_one_database(), and validateSQLNamePattern().

Variable Documentation

◆ oom_buffer

const char oom_buffer[1] = ""
static

Definition at line 38 of file pqexpbuffer.c.

Referenced by markPQExpBufferBroken(), resetPQExpBuffer(), and termPQExpBuffer().

◆ oom_buffer_ptr

const char* oom_buffer_ptr = oom_buffer
static

Definition at line 41 of file pqexpbuffer.c.

Referenced by initPQExpBuffer(), markPQExpBufferBroken(), and termPQExpBuffer().