1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
7 This file is part of systemd.
9 Copyright 2010 Lennart Poettering
11 systemd is free software; you can redistribute it and/or modify it
12 under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 systemd is distributed in the hope that it will be useful, but
17 WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with systemd; If not, see <http://www.gnu.org/licenses/>.
37 typedef uint64_t usec_t;
39 typedef struct dual_timestamp {
44 #define MSEC_PER_SEC 1000ULL
45 #define USEC_PER_SEC 1000000ULL
46 #define USEC_PER_MSEC 1000ULL
47 #define NSEC_PER_SEC 1000000000ULL
48 #define NSEC_PER_MSEC 1000000ULL
49 #define NSEC_PER_USEC 1000ULL
51 #define USEC_PER_MINUTE (60ULL*USEC_PER_SEC)
52 #define USEC_PER_HOUR (60ULL*USEC_PER_MINUTE)
53 #define USEC_PER_DAY (24ULL*USEC_PER_HOUR)
54 #define USEC_PER_WEEK (7ULL*USEC_PER_DAY)
55 #define USEC_PER_MONTH (2629800ULL*USEC_PER_SEC)
56 #define USEC_PER_YEAR (31557600ULL*USEC_PER_SEC)
58 /* What is interpreted as whitespace? */
59 #define WHITESPACE " \t\n\r"
60 #define NEWLINE "\n\r"
62 #define COMMENTS "#;\n"
64 #define FORMAT_TIMESTAMP_MAX 64
65 #define FORMAT_TIMESTAMP_PRETTY_MAX 256
66 #define FORMAT_TIMESPAN_MAX 64
68 #define ANSI_HIGHLIGHT_ON "\x1B[1;31m"
69 #define ANSI_HIGHLIGHT_GREEN_ON "\x1B[1;32m"
70 #define ANSI_HIGHLIGHT_OFF "\x1B[0m"
72 usec_t now(clockid_t clock);
74 dual_timestamp* dual_timestamp_get(dual_timestamp *ts);
76 usec_t timespec_load(const struct timespec *ts);
77 struct timespec *timespec_store(struct timespec *ts, usec_t u);
79 usec_t timeval_load(const struct timeval *tv);
80 struct timeval *timeval_store(struct timeval *tv, usec_t u);
82 #define streq(a,b) (strcmp((a),(b)) == 0)
84 bool streq_ptr(const char *a, const char *b);
86 #define new(t, n) ((t*) malloc(sizeof(t)*(n)))
88 #define new0(t, n) ((t*) calloc((n), sizeof(t)))
90 #define malloc0(n) (calloc((n), 1))
92 static inline const char* yes_no(bool b) {
93 return b ? "yes" : "no";
96 static inline const char* strempty(const char *s) {
100 static inline const char* strnull(const char *s) {
101 return s ? s : "(null)";
104 static inline const char *strna(const char *s) {
105 return s ? s : "n/a";
108 static inline bool is_path_absolute(const char *p) {
112 bool endswith(const char *s, const char *postfix);
113 bool startswith(const char *s, const char *prefix);
114 bool startswith_no_case(const char *s, const char *prefix);
116 bool first_word(const char *s, const char *word);
118 int close_nointr(int fd);
119 void close_nointr_nofail(int fd);
120 void close_many(const int fds[], unsigned n_fd);
122 int parse_boolean(const char *v);
123 int parse_usec(const char *t, usec_t *usec);
124 int parse_pid(const char *s, pid_t* ret_pid);
126 int safe_atou(const char *s, unsigned *ret_u);
127 int safe_atoi(const char *s, int *ret_i);
129 int safe_atollu(const char *s, unsigned long long *ret_u);
130 int safe_atolli(const char *s, long long int *ret_i);
133 static inline int safe_atolu(const char *s, unsigned long *ret_u) {
134 assert_cc(sizeof(unsigned long) == sizeof(unsigned));
135 return safe_atou(s, (unsigned*) ret_u);
137 static inline int safe_atoli(const char *s, long int *ret_u) {
138 assert_cc(sizeof(long int) == sizeof(int));
139 return safe_atoi(s, (int*) ret_u);
142 static inline int safe_atolu(const char *s, unsigned long *ret_u) {
143 assert_cc(sizeof(unsigned long) == sizeof(unsigned long long));
144 return safe_atollu(s, (unsigned long long*) ret_u);
146 static inline int safe_atoli(const char *s, long int *ret_u) {
147 assert_cc(sizeof(long int) == sizeof(long long int));
148 return safe_atolli(s, (long long int*) ret_u);
152 static inline int safe_atou32(const char *s, uint32_t *ret_u) {
153 assert_cc(sizeof(uint32_t) == sizeof(unsigned));
154 return safe_atou(s, (unsigned*) ret_u);
157 static inline int safe_atoi32(const char *s, int32_t *ret_i) {
158 assert_cc(sizeof(int32_t) == sizeof(int));
159 return safe_atoi(s, (int*) ret_i);
162 static inline int safe_atou64(const char *s, uint64_t *ret_u) {
163 assert_cc(sizeof(uint64_t) == sizeof(unsigned long long));
164 return safe_atollu(s, (unsigned long long*) ret_u);
167 static inline int safe_atoi64(const char *s, int64_t *ret_i) {
168 assert_cc(sizeof(int64_t) == sizeof(long long int));
169 return safe_atolli(s, (long long int*) ret_i);
172 char *split(const char *c, size_t *l, const char *separator, char **state);
173 char *split_quoted(const char *c, size_t *l, char **state);
175 #define FOREACH_WORD(word, length, s, state) \
176 for ((state) = NULL, (word) = split((s), &(length), WHITESPACE, &(state)); (word); (word) = split((s), &(length), WHITESPACE, &(state)))
178 #define FOREACH_WORD_SEPARATOR(word, length, s, separator, state) \
179 for ((state) = NULL, (word) = split((s), &(length), (separator), &(state)); (word); (word) = split((s), &(length), (separator), &(state)))
181 #define FOREACH_WORD_QUOTED(word, length, s, state) \
182 for ((state) = NULL, (word) = split_quoted((s), &(length), &(state)); (word); (word) = split_quoted((s), &(length), &(state)))
184 char **split_path_and_make_absolute(const char *p);
186 pid_t get_parent_of_pid(pid_t pid, pid_t *ppid);
188 int write_one_line_file(const char *fn, const char *line);
189 int read_one_line_file(const char *fn, char **line);
190 int read_full_file(const char *fn, char **contents);
192 int parse_env_file(const char *fname, const char *seperator, ...) _sentinel_;
194 char *strappend(const char *s, const char *suffix);
195 char *strnappend(const char *s, const char *suffix, size_t length);
197 char *replace_env(const char *format, char **env);
198 char **replace_env_argv(char **argv, char **env);
200 int readlink_malloc(const char *p, char **r);
201 int readlink_and_make_absolute(const char *p, char **r);
203 char *file_name_from_path(const char *p);
204 bool is_path(const char *p);
206 bool path_is_absolute(const char *p);
207 char *path_make_absolute(const char *p, const char *prefix);
208 char *path_make_absolute_cwd(const char *p);
210 char **strv_path_make_absolute_cwd(char **l);
211 char **strv_path_canonicalize(char **l);
213 int reset_all_signal_handlers(void);
215 char *strstrip(char *s);
216 char *delete_chars(char *s, const char *bad);
217 char *truncate_nl(char *s);
219 char *file_in_same_dir(const char *path, const char *filename);
220 int safe_mkdir(const char *path, mode_t mode, uid_t uid, gid_t gid);
221 int mkdir_parents(const char *path, mode_t mode);
222 int mkdir_p(const char *path, mode_t mode);
224 int parent_of_path(const char *path, char **parent);
226 int rmdir_parents(const char *path, const char *stop);
228 int get_process_name(pid_t pid, char **name);
229 int get_process_cmdline(pid_t pid, size_t max_length, char **line);
232 int unhexchar(char c);
234 int unoctchar(char c);
236 int undecchar(char c);
238 char *cescape(const char *s);
239 char *cunescape(const char *s);
240 char *cunescape_length(const char *s, size_t length);
242 char *xescape(const char *s, const char *bad);
244 char *bus_path_escape(const char *s);
245 char *bus_path_unescape(const char *s);
247 char *path_kill_slashes(char *path);
249 bool path_startswith(const char *path, const char *prefix);
250 bool path_equal(const char *a, const char *b);
252 char *ascii_strlower(char *path);
254 bool ignore_file(const char *filename);
256 bool chars_intersect(const char *a, const char *b);
258 char *format_timestamp(char *buf, size_t l, usec_t t);
259 char *format_timestamp_pretty(char *buf, size_t l, usec_t t);
260 char *format_timespan(char *buf, size_t l, usec_t t);
262 int make_stdio(int fd);
264 bool is_clean_exit(int code, int status);
265 bool is_clean_exit_lsb(int code, int status);
267 unsigned long long random_ull(void);
269 #define DEFINE_STRING_TABLE_LOOKUP(name,type) \
270 const char *name##_to_string(type i) { \
271 if (i < 0 || i >= (type) ELEMENTSOF(name##_table)) \
273 return name##_table[i]; \
275 type name##_from_string(const char *s) { \
279 for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \
280 if (name##_table[i] && \
281 streq(name##_table[i], s)) \
283 if (safe_atou(s, &u) >= 0 && \
284 u < ELEMENTSOF(name##_table)) \
288 struct __useless_struct_to_allow_trailing_semicolon__
291 int fd_nonblock(int fd, bool nonblock);
292 int fd_cloexec(int fd, bool cloexec);
294 int close_all_fds(const int except[], unsigned n_except);
296 bool fstype_is_network(const char *fstype);
300 int read_one_char(FILE *f, char *ret, bool *need_nl);
301 int ask(char *ret, const char *replies, const char *text, ...);
303 int reset_terminal(int fd);
304 int open_terminal(const char *name, int mode);
305 int acquire_terminal(const char *name, bool fail, bool force, bool ignore_tiocstty_eperm);
306 int release_terminal(void);
308 int flush_fd(int fd);
310 int ignore_signals(int sig, ...);
311 int default_signals(int sig, ...);
312 int sigaction_many(const struct sigaction *sa, ...);
314 int close_pipe(int p[]);
316 ssize_t loop_read(int fd, void *buf, size_t nbytes, bool do_poll);
317 ssize_t loop_write(int fd, const void *buf, size_t nbytes, bool do_poll);
319 int path_is_mount_point(const char *path);
321 bool is_device_path(const char *path);
323 int dir_is_empty(const char *path);
325 void rename_process(const char name[8]);
327 void sigset_add_many(sigset_t *ss, ...);
329 char* gethostname_malloc(void);
330 char* getlogname_malloc(void);
331 int getttyname_malloc(char **r);
333 int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid);
335 int rm_rf(const char *path, bool only_dirs, bool delete_root);
337 cpu_set_t* cpu_set_malloc(unsigned *ncpus);
339 void status_vprintf(const char *format, va_list ap);
340 void status_printf(const char *format, ...);
341 void status_welcome(void);
345 int running_in_chroot(void);
347 char *ellipsize(const char *s, unsigned length, unsigned percent);
349 int touch(const char *path);
351 char *unquote(const char *s, const char *quotes);
353 int wait_for_terminate(pid_t pid, siginfo_t *status);
354 int wait_for_terminate_and_warn(const char *name, pid_t pid);
356 #define NULSTR_FOREACH(i, l) \
357 for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1)
359 const char *ioprio_class_to_string(int i);
360 int ioprio_class_from_string(const char *s);
362 const char *sigchld_code_to_string(int i);
363 int sigchld_code_from_string(const char *s);
365 const char *log_facility_to_string(int i);
366 int log_facility_from_string(const char *s);
368 const char *log_level_to_string(int i);
369 int log_level_from_string(const char *s);
371 const char *sched_policy_to_string(int i);
372 int sched_policy_from_string(const char *s);
374 const char *rlimit_to_string(int i);
375 int rlimit_from_string(const char *s);
377 const char *ip_tos_to_string(int i);
378 int ip_tos_from_string(const char *s);
380 const char *signal_to_string(int i);
381 int signal_from_string(const char *s);