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fileio: Add openat() like helpers

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This commit is contained in:
Daan De Meyer
2022-11-09 11:14:10 +01:00
parent 92dae2bd23
commit 0ab5e2a4b4
2 changed files with 42 additions and 24 deletions
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src/basic/fileio.h
+18 -3
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@@ -43,7 +43,10 @@ typedef enum {
READ_FULL_FILE_FAIL_WHEN_LARGER = 1 << 5, /* fail loading if file is larger than specified size */
} ReadFullFileFlags;
int fopen_unlocked(const char *path, const char *options, FILE **ret);
int fopen_unlocked_at(int dir_fd, const char *path, const char *options, int flags, FILE **ret);
static inline int fopen_unlocked(const char *path, const char *options, FILE **ret) {
return fopen_unlocked_at(AT_FDCWD, path, options, 0, ret);
}
int fdopen_unlocked(int fd, const char *options, FILE **ret);
int take_fdopen_unlocked(int *fd, const char *options, FILE **ret);
FILE* take_fdopen(int *fd, const char *options);
@@ -55,7 +58,13 @@ int write_string_stream_ts(FILE *f, const char *line, WriteStringFileFlags flags
static inline int write_string_stream(FILE *f, const char *line, WriteStringFileFlags flags) {
return write_string_stream_ts(f, line, flags, NULL);
}
int write_string_file_ts(const char *fn, const char *line, WriteStringFileFlags flags, const struct timespec *ts);
int write_string_file_ts_at(int dir_fd, const char *fn, const char *line, WriteStringFileFlags flags, const struct timespec *ts);
static inline int write_string_file_ts(const char *fn, const char *line, WriteStringFileFlags flags, const struct timespec *ts) {
return write_string_file_ts_at(AT_FDCWD, fn, line, flags, ts);
}
static inline int write_string_file_at(int dir_fd, const char *fn, const char *line, WriteStringFileFlags flags) {
return write_string_file_ts_at(dir_fd, fn, line, flags, NULL);
}
static inline int write_string_file(const char *fn, const char *line, WriteStringFileFlags flags) {
return write_string_file_ts(fn, line, flags, NULL);
}
@@ -64,6 +73,9 @@ int write_string_filef(const char *fn, WriteStringFileFlags flags, const char *f
int read_one_line_file(const char *filename, char **line);
int read_full_file_full(int dir_fd, const char *filename, uint64_t offset, size_t size, ReadFullFileFlags flags, const char *bind_name, char **ret_contents, size_t *ret_size);
static inline int read_full_file_at(int dir_fd, const char *filename, char **ret_contents, size_t *ret_size) {
return read_full_file_full(dir_fd, filename, UINT64_MAX, SIZE_MAX, 0, NULL, ret_contents, ret_size);
}
static inline int read_full_file(const char *filename, char **ret_contents, size_t *ret_size) {
return read_full_file_full(AT_FDCWD, filename, UINT64_MAX, SIZE_MAX, 0, NULL, ret_contents, ret_size);
}
@@ -82,7 +94,10 @@ static inline int read_full_stream(FILE *f, char **ret_contents, size_t *ret_siz
return read_full_stream_full(f, NULL, UINT64_MAX, SIZE_MAX, 0, ret_contents, ret_size);
}
int verify_file(const char *fn, const char *blob, bool accept_extra_nl);
int verify_file_at(int dir_fd, const char *fn, const char *blob, bool accept_extra_nl);
static inline int verify_file(const char *fn, const char *blob, bool accept_extra_nl) {
return verify_file_at(AT_FDCWD, fn, blob, accept_extra_nl);
}
int executable_is_script(const char *path, char **interpreter);