dirent.c File Reference

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

Include dependency graph for dirent.c:

Go to the source code of this file.

Data Structures
struct	DIR
Functions
DIR *	opendir (const char *dirname)
struct dirent *	readdir (DIR *d)
int	closedir (DIR *d)

---

Function Documentation

int closedir

(

DIR *

d

)

Definition at line 112 of file dirent.c.

References DIR::dirname, free, and DIR::handle.

Referenced by CleanupPriorWALFiles(), CustomizableCleanupPriorWALFiles(), FindEndOfXLOG(), FindStreamingStart(), FreeDesc(), FreeDir(), InitArchiveFmt_Directory(), KillExistingArchiveStatus(), KillExistingXLOG(), pg_check_dir(), pgfnames(), verify_directory(), and walkdir().

{
    if (d->handle != INVALID_HANDLE_VALUE)
        FindClose(d->handle);
    free(d->dirname);
    free(d);
    return 0;
}

DIR* opendir

(

const char *

dirname

)

Definition at line 33 of file dirent.c.

References dirent::d_ino, dirent::d_reclen, DIR::dirname, free, DIR::handle, malloc, and DIR::ret.

Referenced by AllocateDir(), CleanupPriorWALFiles(), CustomizableCleanupPriorWALFiles(), FindEndOfXLOG(), FindStreamingStart(), InitArchiveFmt_Directory(), KillExistingArchiveStatus(), KillExistingXLOG(), pg_check_dir(), pgfnames(), verify_directory(), and walkdir().

{
    DWORD       attr;
    DIR        *d;

    /* Make sure it is a directory */
    attr = GetFileAttributes(dirname);
    if (attr == INVALID_FILE_ATTRIBUTES)
    {
        errno = ENOENT;
        return NULL;
    }
    if ((attr & FILE_ATTRIBUTE_DIRECTORY) != FILE_ATTRIBUTE_DIRECTORY)
    {
        errno = ENOTDIR;
        return NULL;
    }

    d = malloc(sizeof(DIR));
    if (!d)
    {
        errno = ENOMEM;
        return NULL;
    }
    d->dirname = malloc(strlen(dirname) + 4);
    if (!d->dirname)
    {
        errno = ENOMEM;
        free(d);
        return NULL;
    }
    strcpy(d->dirname, dirname);
    if (d->dirname[strlen(d->dirname) - 1] != '/' &&
        d->dirname[strlen(d->dirname) - 1] != '\\')
        strcat(d->dirname, "\\");       /* Append backslash if not already
                                         * there */
    strcat(d->dirname, "*");    /* Search for entries named anything */
    d->handle = INVALID_HANDLE_VALUE;
    d->ret.d_ino = 0;           /* no inodes on win32 */
    d->ret.d_reclen = 0;        /* not used on win32 */

    return d;
}

struct dirent* readdir

(

DIR *

d

)

[read]

Definition at line 78 of file dirent.c.

References _dosmaperr(), dirent::d_name, dirent::d_namlen, DIR::dirname, DIR::handle, and DIR::ret.

Referenced by CleanupPriorWALFiles(), CustomizableCleanupPriorWALFiles(), FindEndOfXLOG(), FindStreamingStart(), InitArchiveFmt_Directory(), KillExistingArchiveStatus(), KillExistingXLOG(), pg_check_dir(), pgfnames(), ReadDir(), and walkdir().

{
    WIN32_FIND_DATA fd;

    if (d->handle == INVALID_HANDLE_VALUE)
    {
        d->handle = FindFirstFile(d->dirname, &fd);
        if (d->handle == INVALID_HANDLE_VALUE)
        {
            errno = ENOENT;
            return NULL;
        }
    }
    else
    {
        if (!FindNextFile(d->handle, &fd))
        {
            if (GetLastError() == ERROR_NO_MORE_FILES)
            {
                /* No more files, force errno=0 (unlike mingw) */
                errno = 0;
                return NULL;
            }
            _dosmaperr(GetLastError());
            return NULL;
        }
    }
    strcpy(d->ret.d_name, fd.cFileName);        /* Both strings are MAX_PATH
                                                 * long */
    d->ret.d_namlen = strlen(d->ret.d_name);
    return &d->ret;
}