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/* Error-checking wrappers for <dirent.h>
Copyright (C) 2024-2025 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#ifndef SUPPORT_XDIRENT_H
#define SUPPORT_XDIRENT_H
#include <dirent.h>
#include <errno.h>
#include <libc-diag.h>
#include <stdbool.h>
#include <stddef.h>
__BEGIN_DECLS
DIR *xopendir (const char *path);
DIR *xfdopendir (int fd);
void xclosedir (DIR *);
void *support_readdir_check (const char *, void *, int);
static __attribute__ ((unused)) struct dirent *
xreaddir (DIR *stream)
{
int saved_errno = errno;
errno = 0;
struct dirent *result = readdir (stream);
return support_readdir_check ("readdir", result, saved_errno);
}
static __attribute__ ((unused)) struct dirent64 *
xreaddir64 (DIR *stream)
{
int saved_errno = errno;
errno = 0;
struct dirent64 *result = readdir64 (stream);
return support_readdir_check ("readdir64", result, saved_errno);
}
/* The functions readdir_r, readdir64_r were deprecated in glibc 2.24. */
DIAG_PUSH_NEEDS_COMMENT;
DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wdeprecated-declarations");
int support_readdir_r_check (const char *, int, void *, void *);
static __attribute__ ((unused)) bool
xreaddir_r (DIR *stream, struct dirent *buf)
{
struct dirent *ptr;
int ret = readdir_r (stream, buf, &ptr);
if (ret == 0 && ptr == NULL)
return false;
support_readdir_r_check ("readdir_r", ret, buf, ptr);
return true;
}
static __attribute__ ((unused)) bool
xreaddir64_r (DIR *stream, struct dirent64 *buf)
{
struct dirent64 *ptr;
int ret = readdir64_r (stream, buf, &ptr);
if (ret == 0 && ptr == NULL)
return false;
support_readdir_r_check ("readdir64_r", ret, buf, ptr);
return true;
}
DIAG_POP_NEEDS_COMMENT;
__END_DECLS
#endif /* SUPPORT_XDIRENT_H */
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