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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
#include <dirent.h>
#include <errno.h>
#include <stdbool.h>
#include "macro.h"
#include "path-util.h"
bool dirent_is_file(const struct dirent *de) _pure_;
bool dirent_is_file_with_suffix(const struct dirent *de, const char *suffix) _pure_;
int dirent_ensure_type(int dir_fd, struct dirent *de);
struct dirent *readdir_ensure_type(DIR *d);
struct dirent *readdir_no_dot(DIR *dirp);
#define FOREACH_DIRENT_ALL(de, d, on_error) \
for (struct dirent *(de) = readdir_ensure_type(d);; (de) = readdir_ensure_type(d)) \
if (!de) { \
if (errno > 0) { \
on_error; \
} \
break; \
} else
#define FOREACH_DIRENT(de, d, on_error) \
FOREACH_DIRENT_ALL(de, d, on_error) \
if (hidden_or_backup_file((de)->d_name)) \
continue; \
else
/* Maximum space one dirent structure might require at most */
#define DIRENT_SIZE_MAX CONST_MAX(sizeof(struct dirent), offsetof(struct dirent, d_name) + NAME_MAX + 1)
/* Only if 64-bit off_t is enabled struct dirent + struct dirent64 are actually the same. We require this, and
* we want them to be interchangeable to make getdents64() work, hence verify that. */
assert_cc(_FILE_OFFSET_BITS == 64);
/* These asserts would fail on musl where the LFS extensions don't exist. They should
* always be present on glibc however. */
#if HAVE_STRUCT_DIRENT64
assert_cc(sizeof(struct dirent) == sizeof(struct dirent64));
assert_cc(offsetof(struct dirent, d_ino) == offsetof(struct dirent64, d_ino));
assert_cc(sizeof_field(struct dirent, d_ino) == sizeof_field(struct dirent64, d_ino));
assert_cc(offsetof(struct dirent, d_off) == offsetof(struct dirent64, d_off));
assert_cc(sizeof_field(struct dirent, d_off) == sizeof_field(struct dirent64, d_off));
assert_cc(offsetof(struct dirent, d_reclen) == offsetof(struct dirent64, d_reclen));
assert_cc(sizeof_field(struct dirent, d_reclen) == sizeof_field(struct dirent64, d_reclen));
assert_cc(offsetof(struct dirent, d_type) == offsetof(struct dirent64, d_type));
assert_cc(sizeof_field(struct dirent, d_type) == sizeof_field(struct dirent64, d_type));
assert_cc(offsetof(struct dirent, d_name) == offsetof(struct dirent64, d_name));
assert_cc(sizeof_field(struct dirent, d_name) == sizeof_field(struct dirent64, d_name));
#endif
#define FOREACH_DIRENT_IN_BUFFER(de, buf, sz) \
for (void *_end = (uint8_t*) ({ (de) = (buf); }) + (sz); \
(uint8_t*) (de) < (uint8_t*) _end; \
(de) = (struct dirent*) ((uint8_t*) (de) + (de)->d_reclen))
#define DEFINE_DIRENT_BUFFER(name, sz) \
union { \
struct dirent de; \
uint8_t data[(sz) * DIRENT_SIZE_MAX]; \
} name
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