1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
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/>.
33 typedef uint64_t usec_t;
35 typedef struct timestamp {
40 #define MSEC_PER_SEC 1000ULL
41 #define USEC_PER_SEC 1000000ULL
42 #define USEC_PER_MSEC 1000ULL
43 #define NSEC_PER_SEC 1000000000ULL
44 #define NSEC_PER_MSEC 1000000ULL
45 #define NSEC_PER_USEC 1000ULL
47 #define USEC_PER_MINUTE (60ULL*USEC_PER_SEC)
48 #define USEC_PER_HOUR (60ULL*USEC_PER_MINUTE)
49 #define USEC_PER_DAY (24ULL*USEC_PER_HOUR)
50 #define USEC_PER_WEEK (7ULL*USEC_PER_DAY)
52 /* What is interpreted as whitespace? */
53 #define WHITESPACE " \t\n\r"
54 #define NEWLINE "\n\r"
56 #define FORMAT_TIMESTAMP_MAX 64
57 #define FORMAT_TIMESPAN_MAX 64
59 usec_t now(clockid_t clock);
61 timestamp* timestamp_get(timestamp *ts);
63 usec_t timespec_load(const struct timespec *ts);
64 struct timespec *timespec_store(struct timespec *ts, usec_t u);
66 usec_t timeval_load(const struct timeval *tv);
67 struct timeval *timeval_store(struct timeval *tv, usec_t u);
69 #define streq(a,b) (strcmp((a),(b)) == 0)
71 bool streq_ptr(const char *a, const char *b);
73 #define new(t, n) ((t*) malloc(sizeof(t)*(n)))
75 #define new0(t, n) ((t*) calloc((n), sizeof(t)))
77 #define malloc0(n) (calloc((n), 1))
79 static inline const char* yes_no(bool b) {
80 return b ? "yes" : "no";
83 static inline const char* strempty(const char *s) {
87 static inline const char* strnull(const char *s) {
88 return s ? s : "(null)";
91 static inline const char *strna(const char *s) {
95 static inline bool is_path_absolute(const char *p) {
99 bool endswith(const char *s, const char *postfix);
100 bool startswith(const char *s, const char *prefix);
101 bool startswith_no_case(const char *s, const char *prefix);
103 bool first_word(const char *s, const char *word);
105 int close_nointr(int fd);
106 void close_nointr_nofail(int fd);
107 void close_many(const int fds[], unsigned n_fd);
109 int parse_boolean(const char *v);
110 int parse_usec(const char *t, usec_t *usec);
112 int safe_atou(const char *s, unsigned *ret_u);
113 int safe_atoi(const char *s, int *ret_i);
115 int safe_atolu(const char *s, unsigned long *ret_u);
116 int safe_atoli(const char *s, long int *ret_i);
118 int safe_atollu(const char *s, unsigned long long *ret_u);
119 int safe_atolli(const char *s, long long int *ret_i);
121 char *split(const char *c, size_t *l, const char *separator, char **state);
122 char *split_quoted(const char *c, size_t *l, char **state);
124 #define FOREACH_WORD(word, length, s, state) \
125 for ((state) = NULL, (word) = split((s), &(length), WHITESPACE, &(state)); (word); (word) = split((s), &(length), WHITESPACE, &(state)))
127 #define FOREACH_WORD_SEPARATOR(word, length, s, separator, state) \
128 for ((state) = NULL, (word) = split((s), &(length), (separator), &(state)); (word); (word) = split((s), &(length), (separator), &(state)))
130 #define FOREACH_WORD_QUOTED(word, length, s, state) \
131 for ((state) = NULL, (word) = split_quoted((s), &(length), &(state)); (word); (word) = split_quoted((s), &(length), &(state)))
133 char **split_path_and_make_absolute(const char *p);
135 pid_t get_parent_of_pid(pid_t pid, pid_t *ppid);
137 int write_one_line_file(const char *fn, const char *line);
138 int read_one_line_file(const char *fn, char **line);
140 char *strappend(const char *s, const char *suffix);
142 int readlink_malloc(const char *p, char **r);
143 int readlink_and_make_absolute(const char *p, char **r);
145 char *file_name_from_path(const char *p);
146 bool is_path(const char *p);
148 bool path_is_absolute(const char *p);
149 char *path_make_absolute(const char *p, const char *prefix);
150 char *path_make_absolute_cwd(const char *p);
152 char **strv_path_make_absolute_cwd(char **l);
153 char **strv_path_canonicalize(char **l);
155 int reset_all_signal_handlers(void);
157 char *strstrip(char *s);
158 char *delete_chars(char *s, const char *bad);
159 char *truncate_nl(char *s);
161 char *file_in_same_dir(const char *path, const char *filename);
162 int mkdir_parents(const char *path, mode_t mode);
163 int mkdir_p(const char *path, mode_t mode);
165 int get_process_name(pid_t pid, char **name);
168 int unhexchar(char c);
170 int unoctchar(char c);
172 int undecchar(char c);
174 char *cescape(const char *s);
175 char *cunescape(const char *s);
177 char *path_kill_slashes(char *path);
179 bool path_startswith(const char *path, const char *prefix);
180 bool path_equal(const char *a, const char *b);
182 char *ascii_strlower(char *path);
184 char *xescape(const char *s, const char *bad);
186 char *bus_path_escape(const char *s);
187 char *bus_path_unescape(const char *s);
189 bool ignore_file(const char *filename);
191 bool chars_intersect(const char *a, const char *b);
193 char *format_timestamp(char *buf, size_t l, usec_t t);
194 char *format_timespan(char *buf, size_t l, usec_t t);
196 int make_stdio(int fd);
198 bool is_clean_exit(int code, int status);
200 unsigned long long random_ull(void);
202 #define DEFINE_STRING_TABLE_LOOKUP(name,type) \
203 const char *name##_to_string(type i) { \
204 if (i < 0 || i >= (type) ELEMENTSOF(name##_table)) \
206 return name##_table[i]; \
208 type name##_from_string(const char *s) { \
212 for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \
213 if (streq(name##_table[i], s)) \
215 if (safe_atou(s, &u) >= 0 && \
216 u < ELEMENTSOF(name##_table)) \
220 struct __useless_struct_to_allow_trailing_semicolon__
223 int fd_nonblock(int fd, bool nonblock);
224 int fd_cloexec(int fd, bool cloexec);
226 int close_all_fds(const int except[], unsigned n_except);
228 bool fstype_is_network(const char *fstype);
232 int read_one_char(FILE *f, char *ret, bool *need_nl);
233 int ask(char *ret, const char *replies, const char *text, ...);
235 int reset_terminal(int fd);
236 int open_terminal(const char *name, int mode);
237 int acquire_terminal(const char *name, bool fail, bool force, bool ignore_tiocstty_eperm);
238 int release_terminal(void);
240 int flush_fd(int fd);
242 int ignore_signals(int sig, ...);
243 int default_signals(int sig, ...);
244 int sigaction_many(const struct sigaction *sa, ...);
246 int close_pipe(int p[]);
248 ssize_t loop_read(int fd, void *buf, size_t nbytes);
250 int path_is_mount_point(const char *path);
252 bool is_device_path(const char *path);
254 int dir_is_empty(const char *path);
256 void rename_process(const char name[8]);
258 const char *ioprio_class_to_string(int i);
259 int ioprio_class_from_string(const char *s);
261 const char *sigchld_code_to_string(int i);
262 int sigchld_code_from_string(const char *s);
264 const char *log_facility_to_string(int i);
265 int log_facility_from_string(const char *s);
267 const char *log_level_to_string(int i);
268 int log_level_from_string(const char *s);
270 const char *sched_policy_to_string(int i);
271 int sched_policy_from_string(const char *s);
273 const char *rlimit_to_string(int i);
274 int rlimit_from_string(const char *s);