1 /* SPDX-License-Identifier: LGPL-2.1+ */
12 #include "time-util.h"
14 #define LONG_LINE_MAX (1U*1024U*1024U)
17 WRITE_STRING_FILE_CREATE
= 1 << 0,
18 WRITE_STRING_FILE_ATOMIC
= 1 << 1,
19 WRITE_STRING_FILE_AVOID_NEWLINE
= 1 << 2,
20 WRITE_STRING_FILE_VERIFY_ON_FAILURE
= 1 << 3,
21 WRITE_STRING_FILE_SYNC
= 1 << 4,
22 WRITE_STRING_FILE_DISABLE_BUFFER
= 1 << 5,
23 WRITE_STRING_FILE_NOFOLLOW
= 1 << 6,
25 /* And before you wonder, why write_string_file_atomic_label_ts() is a separate function instead of just one
26 more flag here: it's about linking: we don't want to pull -lselinux into all users of write_string_file()
29 } WriteStringFileFlags
;
32 READ_FULL_FILE_SECURE
= 1 << 0,
33 READ_FULL_FILE_UNBASE64
= 1 << 1,
36 int write_string_stream_ts(FILE *f
, const char *line
, WriteStringFileFlags flags
, struct timespec
*ts
);
37 static inline int write_string_stream(FILE *f
, const char *line
, WriteStringFileFlags flags
) {
38 return write_string_stream_ts(f
, line
, flags
, NULL
);
40 int write_string_file_ts(const char *fn
, const char *line
, WriteStringFileFlags flags
, struct timespec
*ts
);
41 static inline int write_string_file(const char *fn
, const char *line
, WriteStringFileFlags flags
) {
42 return write_string_file_ts(fn
, line
, flags
, NULL
);
45 int write_string_filef(const char *fn
, WriteStringFileFlags flags
, const char *format
, ...) _printf_(3, 4);
47 int read_one_line_file(const char *filename
, char **line
);
48 int read_full_file_full(const char *filename
, ReadFullFileFlags flags
, char **contents
, size_t *size
);
49 static inline int read_full_file(const char *filename
, char **contents
, size_t *size
) {
50 return read_full_file_full(filename
, 0, contents
, size
);
52 int read_full_stream_full(FILE *f
, const char *filename
, ReadFullFileFlags flags
, char **contents
, size_t *size
);
53 static inline int read_full_stream(FILE *f
, char **contents
, size_t *size
) {
54 return read_full_stream_full(f
, NULL
, 0, contents
, size
);
57 int verify_file(const char *fn
, const char *blob
, bool accept_extra_nl
);
59 int executable_is_script(const char *path
, char **interpreter
);
61 int get_proc_field(const char *filename
, const char *pattern
, const char *terminator
, char **field
);
63 DIR *xopendirat(int dirfd
, const char *name
, int flags
);
65 int search_and_fopen(const char *path
, const char *mode
, const char *root
, const char **search
, FILE **_f
);
66 int search_and_fopen_nulstr(const char *path
, const char *mode
, const char *root
, const char *search
, FILE **_f
);
68 int fflush_and_check(FILE *f
);
69 int fflush_sync_and_check(FILE *f
);
71 int write_timestamp_file_atomic(const char *fn
, usec_t n
);
72 int read_timestamp_file(const char *fn
, usec_t
*ret
);
74 int fputs_with_space(FILE *f
, const char *s
, const char *separator
, bool *space
);
76 typedef enum ReadLineFlags
{
77 READ_LINE_ONLY_NUL
= 1 << 0,
80 int read_line_full(FILE *f
, size_t limit
, ReadLineFlags flags
, char **ret
);
82 static inline int read_line(FILE *f
, size_t limit
, char **ret
) {
83 return read_line_full(f
, limit
, 0, ret
);
86 static inline int read_nul_string(FILE *f
, size_t limit
, char **ret
) {
87 return read_line_full(f
, limit
, READ_LINE_ONLY_NUL
, ret
);
90 int safe_fgetc(FILE *f
, char *ret
);
92 int warn_file_is_world_accessible(const char *filename
, struct stat
*st
, const char *unit
, unsigned line
);