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git.ipfire.org Git - people/ms/systemd.git/blob - util.h
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/>.
32 typedef uint64_t usec_t
;
34 #define MSEC_PER_SEC 1000ULL
35 #define USEC_PER_SEC 1000000ULL
36 #define USEC_PER_MSEC 1000ULL
37 #define NSEC_PER_SEC 1000000000ULL
38 #define NSEC_PER_MSEC 1000000ULL
39 #define NSEC_PER_USEC 1000ULL
41 /* What is interpreted as whitespace? */
42 #define WHITESPACE " \t\n\r"
43 #define NEWLINE "\n\r"
45 #define FORMAT_TIMESTAMP_MAX 64
47 usec_t
now(clockid_t clock
);
49 usec_t
timespec_load(const struct timespec
*ts
);
50 struct timespec
*timespec_store(struct timespec
*ts
, usec_t u
);
52 usec_t
timeval_load(const struct timeval
*tv
);
53 struct timeval
*timeval_store(struct timeval
*tv
, usec_t u
);
55 #define streq(a,b) (strcmp((a),(b)) == 0)
57 bool streq_ptr(const char *a
, const char *b
);
59 #define new(t, n) ((t*) malloc(sizeof(t)*(n)))
61 #define new0(t, n) ((t*) calloc((n), sizeof(t)))
63 #define malloc0(n) (calloc((n), 1))
65 static inline const char* yes_no(bool b
) {
66 return b
? "yes" : "no";
69 static inline const char* strempty(const char *s
) {
73 static inline const char* strnull(const char *s
) {
74 return s
? s
: "(null)";
77 static inline const char *strna(const char *s
) {
81 static inline bool is_path_absolute(const char *p
) {
85 bool endswith(const char *s
, const char *postfix
);
86 bool startswith(const char *s
, const char *prefix
);
88 bool first_word(const char *s
, const char *word
);
90 int close_nointr(int fd
);
91 void close_nointr_nofail(int fd
);
93 int parse_boolean(const char *v
);
95 int safe_atou(const char *s
, unsigned *ret_u
);
96 int safe_atoi(const char *s
, int *ret_i
);
98 int safe_atolu(const char *s
, unsigned long *ret_u
);
99 int safe_atoli(const char *s
, long int *ret_i
);
101 int safe_atollu(const char *s
, unsigned long long *ret_u
);
102 int safe_atolli(const char *s
, long long int *ret_i
);
104 char *split(const char *c
, size_t *l
, const char *separator
, char **state
);
105 char *split_quoted(const char *c
, size_t *l
, char **state
);
107 #define FOREACH_WORD(word, length, s, state) \
108 for ((state) = NULL, (word) = split((s), &(length), WHITESPACE, &(state)); (word); (word) = split((s), &(length), WHITESPACE, &(state)))
110 #define FOREACH_WORD_SEPARATOR(word, length, s, separator, state) \
111 for ((state) = NULL, (word) = split((s), &(length), (separator), &(state)); (word); (word) = split((s), &(length), (separator), &(state)))
113 #define FOREACH_WORD_QUOTED(word, length, s, state) \
114 for ((state) = NULL, (word) = split_quoted((s), &(length), &(state)); (word); (word) = split_quoted((s), &(length), &(state)))
116 char **split_path_and_make_absolute(const char *p
);
118 pid_t
get_parent_of_pid(pid_t pid
, pid_t
*ppid
);
120 int write_one_line_file(const char *fn
, const char *line
);
121 int read_one_line_file(const char *fn
, char **line
);
123 char *strappend(const char *s
, const char *suffix
);
125 int readlink_malloc(const char *p
, char **r
);
127 char *file_name_from_path(const char *p
);
128 bool is_path(const char *p
);
130 bool path_is_absolute(const char *p
);
131 char *path_make_absolute(const char *p
, const char *prefix
);
132 char *path_make_absolute_cwd(const char *p
);
133 char **strv_path_make_absolute_cwd(char **l
);
135 int reset_all_signal_handlers(void);
137 char *strstrip(char *s
);
138 char *delete_chars(char *s
, const char *bad
);
139 char *truncate_nl(char *s
);
141 char *file_in_same_dir(const char *path
, const char *filename
);
142 int mkdir_parents(const char *path
, mode_t mode
);
143 int mkdir_p(const char *path
, mode_t mode
);
145 int get_process_name(pid_t pid
, char **name
);
148 int unhexchar(char c
);
150 int unoctchar(char c
);
152 int undecchar(char c
);
154 char *cescape(const char *s
);
155 char *cunescape(const char *s
);
157 char *path_kill_slashes(char *path
);
159 bool path_startswith(const char *path
, const char *prefix
);
161 char *ascii_strlower(char *path
);
163 char *xescape(const char *s
, const char *bad
);
165 char *bus_path_escape(const char *s
);
166 char *bus_path_unescape(const char *s
);
168 bool ignore_file(const char *filename
);
170 bool chars_intersect(const char *a
, const char *b
);
172 char *format_timestamp(char *buf
, size_t l
, usec_t t
);
174 #define DEFINE_STRING_TABLE_LOOKUP(name,type) \
175 const char *name##_to_string(type i) { \
176 if (i < 0 || i >= (type) ELEMENTSOF(name##_table)) \
178 return name##_table[i]; \
180 type name##_from_string(const char *s) { \
184 for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \
185 if (streq(name##_table[i], s)) \
187 if (safe_atou(s, &u) >= 0 && \
188 u < ELEMENTSOF(name##_table)) \
192 struct __useless_struct_to_allow_trailing_semicolon__
195 int fd_nonblock(int fd
, bool nonblock
);
196 int fd_cloexec(int fd
, bool cloexec
);
198 int close_all_fds(const int except
[], unsigned n_except
);
200 bool fstype_is_network(const char *fstype
);
204 int read_one_char(FILE *f
, char *ret
, bool *need_nl
);
205 int ask(char *ret
, const char *replies
, const char *text
, ...);
207 int reset_terminal(int fd
);
208 int open_terminal(const char *name
, int mode
);
209 int acquire_terminal(const char *name
, bool fail
, bool force
);
210 int release_terminal(void);
212 int flush_fd(int fd
);
214 int ignore_signal(int sig
);
216 extern char * __progname
;
218 const char *ioprio_class_to_string(int i
);
219 int ioprio_class_from_string(const char *s
);
221 const char *sigchld_code_to_string(int i
);
222 int sigchld_code_from_string(const char *s
);
224 const char *log_facility_to_string(int i
);
225 int log_facility_from_string(const char *s
);
227 const char *log_level_to_string(int i
);
228 int log_level_from_string(const char *s
);
230 const char *sched_policy_to_string(int i
);
231 int sched_policy_from_string(const char *s
);
233 const char *rlimit_to_string(int i
);
234 int rlimit_from_string(const char *s
);