/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ #ifndef fooutilhfoo #define fooutilhfoo /*** This file is part of systemd. Copyright 2010 Lennart Poettering systemd is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. systemd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ #include <inttypes.h> #include <time.h> #include <sys/time.h> #include <stdbool.h> #include <stdlib.h> #include <stdio.h> #include <signal.h> #include <sched.h> #include <limits.h> #include <sys/stat.h> #include <dirent.h> #include "macro.h" typedef uint64_t usec_t; typedef struct dual_timestamp { usec_t realtime; usec_t monotonic; } dual_timestamp; #define MSEC_PER_SEC 1000ULL #define USEC_PER_SEC 1000000ULL #define USEC_PER_MSEC 1000ULL #define NSEC_PER_SEC 1000000000ULL #define NSEC_PER_MSEC 1000000ULL #define NSEC_PER_USEC 1000ULL #define USEC_PER_MINUTE (60ULL*USEC_PER_SEC) #define USEC_PER_HOUR (60ULL*USEC_PER_MINUTE) #define USEC_PER_DAY (24ULL*USEC_PER_HOUR) #define USEC_PER_WEEK (7ULL*USEC_PER_DAY) #define USEC_PER_MONTH (2629800ULL*USEC_PER_SEC) #define USEC_PER_YEAR (31557600ULL*USEC_PER_SEC) /* What is interpreted as whitespace? */ #define WHITESPACE " \t\n\r" #define NEWLINE "\n\r" #define QUOTES "\"\'" #define COMMENTS "#;\n" #define FORMAT_TIMESTAMP_MAX 64 #define FORMAT_TIMESTAMP_PRETTY_MAX 256 #define FORMAT_TIMESPAN_MAX 64 #define ANSI_HIGHLIGHT_ON "\x1B[1;31m" #define ANSI_HIGHLIGHT_GREEN_ON "\x1B[1;32m" #define ANSI_HIGHLIGHT_OFF "\x1B[0m" usec_t now(clockid_t clock); dual_timestamp* dual_timestamp_get(dual_timestamp *ts); #define dual_timestamp_is_set(ts) ((ts)->realtime > 0) usec_t timespec_load(const struct timespec *ts); struct timespec *timespec_store(struct timespec *ts, usec_t u); usec_t timeval_load(const struct timeval *tv); struct timeval *timeval_store(struct timeval *tv, usec_t u); #define streq(a,b) (strcmp((a),(b)) == 0) #define strneq(a, b, n) (strncmp((a), (b), (n)) == 0) bool streq_ptr(const char *a, const char *b); #define new(t, n) ((t*) malloc(sizeof(t)*(n))) #define new0(t, n) ((t*) calloc((n), sizeof(t))) #define malloc0(n) (calloc((n), 1)) static inline const char* yes_no(bool b) { return b ? "yes" : "no"; } static inline const char* strempty(const char *s) { return s ? s : ""; } static inline const char* strnull(const char *s) { return s ? s : "(null)"; } static inline const char *strna(const char *s) { return s ? s : "n/a"; } static inline bool is_path_absolute(const char *p) { return *p == '/'; } bool endswith(const char *s, const char *postfix); bool startswith(const char *s, const char *prefix); bool startswith_no_case(const char *s, const char *prefix); bool first_word(const char *s, const char *word); int close_nointr(int fd); void close_nointr_nofail(int fd); void close_many(const int fds[], unsigned n_fd); int parse_boolean(const char *v); int parse_usec(const char *t, usec_t *usec); int parse_pid(const char *s, pid_t* ret_pid); int safe_atou(const char *s, unsigned *ret_u); int safe_atoi(const char *s, int *ret_i); int safe_atollu(const char *s, unsigned long long *ret_u); int safe_atolli(const char *s, long long int *ret_i); #if __WORDSIZE == 32 static inline int safe_atolu(const char *s, unsigned long *ret_u) { assert_cc(sizeof(unsigned long) == sizeof(unsigned)); return safe_atou(s, (unsigned*) ret_u); } static inline int safe_atoli(const char *s, long int *ret_u) { assert_cc(sizeof(long int) == sizeof(int)); return safe_atoi(s, (int*) ret_u); } #else static inline int safe_atolu(const char *s, unsigned long *ret_u) { assert_cc(sizeof(unsigned long) == sizeof(unsigned long long)); return safe_atollu(s, (unsigned long long*) ret_u); } static inline int safe_atoli(const char *s, long int *ret_u) { assert_cc(sizeof(long int) == sizeof(long long int)); return safe_atolli(s, (long long int*) ret_u); } #endif static inline int safe_atou32(const char *s, uint32_t *ret_u) { assert_cc(sizeof(uint32_t) == sizeof(unsigned)); return safe_atou(s, (unsigned*) ret_u); } static inline int safe_atoi32(const char *s, int32_t *ret_i) { assert_cc(sizeof(int32_t) == sizeof(int)); return safe_atoi(s, (int*) ret_i); } static inline int safe_atou64(const char *s, uint64_t *ret_u) { assert_cc(sizeof(uint64_t) == sizeof(unsigned long long)); return safe_atollu(s, (unsigned long long*) ret_u); } static inline int safe_atoi64(const char *s, int64_t *ret_i) { assert_cc(sizeof(int64_t) == sizeof(long long int)); return safe_atolli(s, (long long int*) ret_i); } char *split(const char *c, size_t *l, const char *separator, char **state); char *split_quoted(const char *c, size_t *l, char **state); #define FOREACH_WORD(word, length, s, state) \ for ((state) = NULL, (word) = split((s), &(length), WHITESPACE, &(state)); (word); (word) = split((s), &(length), WHITESPACE, &(state))) #define FOREACH_WORD_SEPARATOR(word, length, s, separator, state) \ for ((state) = NULL, (word) = split((s), &(length), (separator), &(state)); (word); (word) = split((s), &(length), (separator), &(state))) #define FOREACH_WORD_QUOTED(word, length, s, state) \ for ((state) = NULL, (word) = split_quoted((s), &(length), &(state)); (word); (word) = split_quoted((s), &(length), &(state))) char **split_path_and_make_absolute(const char *p); pid_t get_parent_of_pid(pid_t pid, pid_t *ppid); int write_one_line_file(const char *fn, const char *line); int read_one_line_file(const char *fn, char **line); int read_full_file(const char *fn, char **contents); int parse_env_file(const char *fname, const char *separator, ...) _sentinel_; char *strappend(const char *s, const char *suffix); char *strnappend(const char *s, const char *suffix, size_t length); char *replace_env(const char *format, char **env); char **replace_env_argv(char **argv, char **env); int readlink_malloc(const char *p, char **r); int readlink_and_make_absolute(const char *p, char **r); char *file_name_from_path(const char *p); bool is_path(const char *p); bool path_is_absolute(const char *p); char *path_make_absolute(const char *p, const char *prefix); char *path_make_absolute_cwd(const char *p); char **strv_path_make_absolute_cwd(char **l); char **strv_path_canonicalize(char **l); int reset_all_signal_handlers(void); char *strstrip(char *s); char *delete_chars(char *s, const char *bad); char *truncate_nl(char *s); char *file_in_same_dir(const char *path, const char *filename); int safe_mkdir(const char *path, mode_t mode, uid_t uid, gid_t gid); int mkdir_parents(const char *path, mode_t mode); int mkdir_p(const char *path, mode_t mode); int parent_of_path(const char *path, char **parent); int rmdir_parents(const char *path, const char *stop); int get_process_name(pid_t pid, char **name); int get_process_cmdline(pid_t pid, size_t max_length, char **line); char hexchar(int x); int unhexchar(char c); char octchar(int x); int unoctchar(char c); char decchar(int x); int undecchar(char c); char *cescape(const char *s); char *cunescape(const char *s); char *cunescape_length(const char *s, size_t length); char *xescape(const char *s, const char *bad); char *bus_path_escape(const char *s); char *bus_path_unescape(const char *s); char *path_kill_slashes(char *path); bool path_startswith(const char *path, const char *prefix); bool path_equal(const char *a, const char *b); char *ascii_strlower(char *path); bool ignore_file(const char *filename); bool chars_intersect(const char *a, const char *b); char *format_timestamp(char *buf, size_t l, usec_t t); char *format_timestamp_pretty(char *buf, size_t l, usec_t t); char *format_timespan(char *buf, size_t l, usec_t t); int make_stdio(int fd); int make_null_stdio(void); bool is_clean_exit(int code, int status); bool is_clean_exit_lsb(int code, int status); unsigned long long random_ull(void); #define DEFINE_STRING_TABLE_LOOKUP(name,type) \ const char *name##_to_string(type i) { \ if (i < 0 || i >= (type) ELEMENTSOF(name##_table)) \ return NULL; \ return name##_table[i]; \ } \ type name##_from_string(const char *s) { \ type i; \ unsigned u = 0; \ assert(s); \ for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \ if (name##_table[i] && \ streq(name##_table[i], s)) \ return i; \ if (safe_atou(s, &u) >= 0 && \ u < ELEMENTSOF(name##_table)) \ return (type) u; \ return (type) -1; \ } \ struct __useless_struct_to_allow_trailing_semicolon__ int fd_nonblock(int fd, bool nonblock); int fd_cloexec(int fd, bool cloexec); int close_all_fds(const int except[], unsigned n_except); bool fstype_is_network(const char *fstype); int chvt(int vt); int read_one_char(FILE *f, char *ret, bool *need_nl); int ask(char *ret, const char *replies, const char *text, ...); int reset_terminal(int fd); int open_terminal(const char *name, int mode); int acquire_terminal(const char *name, bool fail, bool force, bool ignore_tiocstty_eperm); int release_terminal(void); int flush_fd(int fd); int ignore_signals(int sig, ...); int default_signals(int sig, ...); int sigaction_many(const struct sigaction *sa, ...); int close_pipe(int p[]); ssize_t loop_read(int fd, void *buf, size_t nbytes, bool do_poll); ssize_t loop_write(int fd, const void *buf, size_t nbytes, bool do_poll); int path_is_mount_point(const char *path); bool is_device_path(const char *path); int dir_is_empty(const char *path); void rename_process(const char name[8]); void sigset_add_many(sigset_t *ss, ...); char* gethostname_malloc(void); char* getlogname_malloc(void); int getttyname_malloc(char **r); int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid); int rm_rf(const char *path, bool only_dirs, bool delete_root); cpu_set_t* cpu_set_malloc(unsigned *ncpus); void status_vprintf(const char *format, va_list ap); void status_printf(const char *format, ...); void status_welcome(void); int columns(void); int running_in_chroot(void); char *ellipsize(const char *s, unsigned length, unsigned percent); int touch(const char *path); char *unquote(const char *s, const char *quotes); int wait_for_terminate(pid_t pid, siginfo_t *status); int wait_for_terminate_and_warn(const char *name, pid_t pid); _noreturn_ void freeze(void); bool null_or_empty(struct stat *st); DIR *xopendirat(int dirfd, const char *name); void dual_timestamp_serialize(FILE *f, const char *name, dual_timestamp *t); void dual_timestamp_deserialize(const char *value, dual_timestamp *t); char *fstab_node_to_udev_node(const char *p); void filter_environ(const char *prefix); #define NULSTR_FOREACH(i, l) \ for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1) #define NULSTR_FOREACH_PAIR(i, j, l) \ for ((i) = (l), (j) = strchr((i), 0)+1; (i) && *(i); (i) = strchr((j), 0)+1, (j) = *(i) ? strchr((i), 0)+1 : (i)) const char *ioprio_class_to_string(int i); int ioprio_class_from_string(const char *s); const char *sigchld_code_to_string(int i); int sigchld_code_from_string(const char *s); const char *log_facility_to_string(int i); int log_facility_from_string(const char *s); const char *log_level_to_string(int i); int log_level_from_string(const char *s); const char *sched_policy_to_string(int i); int sched_policy_from_string(const char *s); const char *rlimit_to_string(int i); int rlimit_from_string(const char *s); const char *ip_tos_to_string(int i); int ip_tos_from_string(const char *s); const char *signal_to_string(int i); int signal_from_string(const char *s); int signal_from_string_try_harder(const char *s); #endif