mirror of
https://github.com/morgan9e/systemd
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87fbd33372
- Remove unused includes - Add common false positive headers to misc-include-cleaner.IgnoreHeaders - Add IWYU pragma keep for uncommon false positive headers
59 lines
3.2 KiB
C
59 lines
3.2 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include <dirent.h> /* IWYU pragma: export */
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#include "basic-forward.h"
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#include "path-util.h" /* IWYU pragma: keep */
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bool dirent_is_file(const struct dirent *de) _pure_;
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bool dirent_is_file_with_suffix(const struct dirent *de, const char *suffix) _pure_;
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int dirent_ensure_type(int dir_fd, struct dirent *de);
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struct dirent* readdir_ensure_type(DIR *d);
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struct dirent* readdir_no_dot(DIR *dirp);
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#define FOREACH_DIRENT_ALL(de, d, on_error) \
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for (struct dirent *(de) = readdir_ensure_type(d);; (de) = readdir_ensure_type(d)) \
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if (!de) { \
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if (errno > 0) { \
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on_error; \
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} \
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break; \
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} else
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#define FOREACH_DIRENT(de, d, on_error) \
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FOREACH_DIRENT_ALL(de, d, on_error) \
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if (hidden_or_backup_file((de)->d_name)) \
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continue; \
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else
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/* Maximum space one dirent structure might require at most */
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#define DIRENT_SIZE_MAX CONST_MAX(sizeof(struct dirent), offsetof(struct dirent, d_name) + NAME_MAX + 1)
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/* Only if 64-bit off_t is enabled struct dirent + struct dirent64 are actually the same. We require this, and
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* we want them to be interchangeable to make getdents64() work, hence verify that. */
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assert_cc(_FILE_OFFSET_BITS == 64);
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assert_cc(sizeof(struct dirent) == sizeof(struct dirent64));
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assert_cc(offsetof(struct dirent, d_ino) == offsetof(struct dirent64, d_ino));
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assert_cc(sizeof_field(struct dirent, d_ino) == sizeof_field(struct dirent64, d_ino));
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assert_cc(offsetof(struct dirent, d_off) == offsetof(struct dirent64, d_off));
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assert_cc(sizeof_field(struct dirent, d_off) == sizeof_field(struct dirent64, d_off));
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assert_cc(offsetof(struct dirent, d_reclen) == offsetof(struct dirent64, d_reclen));
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assert_cc(sizeof_field(struct dirent, d_reclen) == sizeof_field(struct dirent64, d_reclen));
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assert_cc(offsetof(struct dirent, d_type) == offsetof(struct dirent64, d_type));
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assert_cc(sizeof_field(struct dirent, d_type) == sizeof_field(struct dirent64, d_type));
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assert_cc(offsetof(struct dirent, d_name) == offsetof(struct dirent64, d_name));
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assert_cc(sizeof_field(struct dirent, d_name) == sizeof_field(struct dirent64, d_name));
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#define FOREACH_DIRENT_IN_BUFFER(de, buf, sz) \
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for (void *_end = (uint8_t*) ({ (de) = (buf); }) + (sz); \
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(uint8_t*) (de) < (uint8_t*) _end; \
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(de) = (struct dirent*) ((uint8_t*) (de) + (de)->d_reclen))
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#define DEFINE_DIRENT_BUFFER(name, sz) \
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union { \
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struct dirent de; \
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uint8_t data[(sz) * DIRENT_SIZE_MAX]; \
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} name
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