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git.ipfire.org Git - thirdparty/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/>.
31 typedef uint64_t usec_t
;
33 #define MSEC_PER_SEC 1000ULL
34 #define USEC_PER_SEC 1000000ULL
35 #define USEC_PER_MSEC 1000ULL
36 #define NSEC_PER_SEC 1000000000ULL
37 #define NSEC_PER_MSEC 1000000ULL
38 #define NSEC_PER_USEC 1000ULL
40 /* What is interpreted as whitespace? */
41 #define WHITESPACE " \t\n\r"
43 usec_t
now(clockid_t clock
);
45 usec_t
timespec_load(const struct timespec
*ts
);
46 struct timespec
*timespec_store(struct timespec
*ts
, usec_t u
);
48 usec_t
timeval_load(const struct timeval
*tv
);
49 struct timeval
*timeval_store(struct timeval
*tv
, usec_t u
);
51 #define streq(a,b) (strcmp((a),(b)) == 0)
53 #define new(t, n) ((t*) malloc(sizeof(t)*(n)))
55 #define new0(t, n) ((t*) calloc((n), sizeof(t)))
57 #define malloc0(n) (calloc((n), 1))
59 static inline const char* yes_no(bool b
) {
60 return b
? "yes" : "no";
63 static inline const char* strempty(const char *s
) {
67 static inline const char* strnull(const char *s
) {
68 return s
? s
: "(null)";
71 static inline const char *strna(const char *s
) {
75 static inline bool is_path_absolute(const char *p
) {
79 bool endswith(const char *s
, const char *postfix
);
80 bool startswith(const char *s
, const char *prefix
);
82 bool first_word(const char *s
, const char *word
);
84 int close_nointr(int fd
);
85 void close_nointr_nofail(int fd
);
87 int parse_boolean(const char *v
);
89 int safe_atou(const char *s
, unsigned *ret_u
);
90 int safe_atoi(const char *s
, int *ret_i
);
92 int safe_atolu(const char *s
, unsigned long *ret_u
);
93 int safe_atoli(const char *s
, long int *ret_i
);
95 int safe_atollu(const char *s
, unsigned long long *ret_u
);
96 int safe_atolli(const char *s
, long long int *ret_i
);
98 char *split(const char *c
, size_t *l
, const char *separator
, char **state
);
99 char *split_quoted(const char *c
, size_t *l
, char **state
);
101 #define FOREACH_WORD(word, length, s, state) \
102 for ((state) = NULL, (word) = split((s), &(length), WHITESPACE, &(state)); (word); (word) = split((s), &(length), WHITESPACE, &(state)))
104 #define FOREACH_WORD_SEPARATOR(word, length, s, separator, state) \
105 for ((state) = NULL, (word) = split((s), &(length), (separator), &(state)); (word); (word) = split((s), &(length), (separator), &(state)))
107 #define FOREACH_WORD_QUOTED(word, length, s, state) \
108 for ((state) = NULL, (word) = split_quoted((s), &(length), &(state)); (word); (word) = split_quoted((s), &(length), &(state)))
110 char **split_path_and_make_absolute(const char *p
);
112 pid_t
get_parent_of_pid(pid_t pid
, pid_t
*ppid
);
114 int write_one_line_file(const char *fn
, const char *line
);
115 int read_one_line_file(const char *fn
, char **line
);
117 char *strappend(const char *s
, const char *suffix
);
119 int readlink_malloc(const char *p
, char **r
);
121 char *file_name_from_path(const char *p
);
122 bool is_path(const char *p
);
124 bool path_is_absolute(const char *p
);
125 char *path_make_absolute(const char *p
, const char *prefix
);
126 char *path_make_absolute_cwd(const char *p
);
127 char **strv_path_make_absolute_cwd(char **l
);
129 int reset_all_signal_handlers(void);
131 char *strstrip(char *s
);
132 char *file_in_same_dir(const char *path
, const char *filename
);
133 int mkdir_parents(const char *path
, mode_t mode
);
136 int unhexchar(char c
);
138 int unoctchar(char c
);
140 int undecchar(char c
);
142 char *cescape(const char *s
);
143 char *cunescape(const char *s
);
145 char *path_kill_slashes(char *path
);
147 bool path_startswith(const char *path
, const char *prefix
);
149 char *ascii_strlower(char *path
);
151 char *xescape(const char *s
, const char *bad
);
153 char *bus_path_escape(const char *s
);
154 char *bus_path_unescape(const char *s
);
156 bool ignore_file(const char *filename
);
158 #define DEFINE_STRING_TABLE_LOOKUP(name,type) \
159 const char *name##_to_string(type i) { \
160 if (i < 0 || i >= (type) ELEMENTSOF(name##_table)) \
162 return name##_table[i]; \
164 type name##_from_string(const char *s) { \
168 for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \
169 if (streq(name##_table[i], s)) \
171 if (safe_atou(s, &u) >= 0 && \
172 u < ELEMENTSOF(name##_table)) \
176 struct __useless_struct_to_allow_trailing_semicolon__
179 int fd_nonblock(int fd
, bool nonblock
);
180 int fd_cloexec(int fd
, bool cloexec
);
182 int close_all_fds(const int except
[], unsigned n_except
);
184 extern char * __progname
;
186 const char *ioprio_class_to_string(int i
);
187 int ioprio_class_from_string(const char *s
);
189 const char *sigchld_code_to_string(int i
);
190 int sigchld_code_from_string(const char *s
);
192 const char *log_facility_to_string(int i
);
193 int log_facility_from_string(const char *s
);
195 const char *log_level_to_string(int i
);
196 int log_level_from_string(const char *s
);
198 const char *sched_policy_to_string(int i
);
199 int sched_policy_from_string(const char *s
);
201 const char *rlimit_to_string(int i
);
202 int rlimit_from_string(const char *s
);