pgcheckdir.c File Reference

#include "c.h"
#include <dirent.h>

Include dependency graph for pgcheckdir.c:

Go to the source code of this file.

Functions
int	pg_check_dir (const char *dir)

Function Documentation

pg_check_dir()

int pg_check_dir

(

const char *

dir

)

Definition at line 33 of file pgcheckdir.c.

{
    int         result = 1;
    DIR        *chkdir;
    struct dirent *file;
    bool        dot_found = false;
    bool        mount_found = false;
    int         readdir_errno;
 
    chkdir = opendir(dir);
    if (chkdir == NULL)
        return (errno == ENOENT) ? 0 : -1;
 
    while (errno = 0, (file = readdir(chkdir)) != NULL)
    {
        if (strcmp(".", file->d_name) == 0 ||
            strcmp("..", file->d_name) == 0)
        {
            /* skip this and parent directory */
            continue;
        }
#ifndef WIN32
        /* file starts with "." */
        else if (file->d_name[0] == '.')
        {
            dot_found = true;
        }
        /* lost+found directory */
        else if (strcmp("lost+found", file->d_name) == 0)
        {
            mount_found = true;
        }
#endif
        else
        {
            result = 4;         /* not empty */
            break;
        }
    }
 
    if (errno)
        result = -1;            /* some kind of I/O error? */
 
    /* Close chkdir and avoid overwriting the readdir errno on success */
    readdir_errno = errno;
    if (closedir(chkdir))
        result = -1;            /* error executing closedir */
    else
        errno = readdir_errno;
 
    /* We report on mount point if we find a lost+found directory */
    if (result == 1 && mount_found)
        result = 3;
 
    /* We report on dot-files if we _only_ find dot files */
    if (result == 1 && dot_found)
        result = 2;
 
    return result;
}

References closedir(), dirent::d_name, opendir(), and readdir().

Referenced by bbsink_server_new(), cleanup_output_dirs(), create_data_directory(), create_fullpage_directory(), create_output_directory(), create_xlog_or_symlink(), main(), and verify_dir_is_empty_or_create().