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dracut/install/util.h

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#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 Lesser General Public License as published by
the Free Software Foundation; either version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#define _GNU_SOURCE
#include <inttypes.h>
#include <time.h>
#include <sys/time.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <sched.h>
#include <limits.h>
#include <sys/stat.h>
#include <dirent.h>
#include <sys/resource.h>
#include "macro.h"
typedef uint64_t usec_t;
typedef uint64_t nsec_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 NSEC_PER_MINUTE (60ULL*NSEC_PER_SEC)
#define USEC_PER_HOUR (60ULL*USEC_PER_MINUTE)
#define NSEC_PER_HOUR (60ULL*NSEC_PER_MINUTE)
#define USEC_PER_DAY (24ULL*USEC_PER_HOUR)
#define NSEC_PER_DAY (24ULL*NSEC_PER_HOUR)
#define USEC_PER_WEEK (7ULL*USEC_PER_DAY)
#define NSEC_PER_WEEK (7ULL*NSEC_PER_DAY)
#define USEC_PER_MONTH (2629800ULL*USEC_PER_SEC)
#define NSEC_PER_MONTH (2629800ULL*NSEC_PER_SEC)
#define USEC_PER_YEAR (31557600ULL*USEC_PER_SEC)
#define NSEC_PER_YEAR (31557600ULL*NSEC_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 FORMAT_BYTES_MAX 8
#define ANSI_HIGHLIGHT_ON "\x1B[1;39m"
#define ANSI_HIGHLIGHT_RED_ON "\x1B[1;31m"
#define ANSI_HIGHLIGHT_GREEN_ON "\x1B[1;32m"
#define ANSI_HIGHLIGHT_YELLOW_ON "\x1B[1;33m"
#define ANSI_HIGHLIGHT_OFF "\x1B[0m"
usec_t now(clockid_t clock);
dual_timestamp *dual_timestamp_get(dual_timestamp *ts);
dual_timestamp *dual_timestamp_from_realtime(dual_timestamp *ts, usec_t u);
#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);
size_t page_size(void);
#define PAGE_ALIGN(l) ALIGN_TO((l), page_size())
#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 newa(t, n) ((t*) alloca(sizeof(t)*(n)))
#define newdup(t, p, n) ((t*) memdup(p, sizeof(t)*(n)))
#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 isempty(const char *p)
{
return !p || !p[0];
}
static inline const char *startswith(const char *s, const char *prefix)
{
if (strncmp(s, prefix, strlen(prefix)) == 0)
return s + strlen(prefix);
return NULL;
}
bool endswith(const char *s, const char *postfix);
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_nsec(const char *t, nsec_t *nsec);
int parse_bytes(const char *t, off_t *bytes);
int parse_pid(const char *s, pid_t *ret_pid);
int parse_uid(const char *s, uid_t *ret_uid);
#define parse_gid(s, ret_uid) parse_uid(s, ret_uid)
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 LONG_MAX == INT_MAX
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)))
pid_t get_parent_of_pid(pid_t pid, pid_t *ppid);
int get_starttime_of_pid(pid_t pid, unsigned long long *st);
int write_one_line_file(const char *fn, const char *line);
int write_one_line_file_atomic(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, size_t *size);
int parse_env_file(const char *fname, const char *separator, ...) _sentinel_;
int load_env_file(const char *fname, char ***l);
int write_env_file(const char *fname, char **l);
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);
int readlink_and_canonicalize(const char *p, char **r);
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 rmdir_parents(const char *path, const char *stop);
int get_process_comm(pid_t pid, char **name);
int get_process_cmdline(pid_t pid, size_t max_length, bool comm_fallback, char **line);
int get_process_exe(pid_t pid, char **name);
int get_process_uid(pid_t pid, uid_t *uid);
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 *ascii_strlower(char *path);
bool dirent_is_file(const struct dirent *de);
bool dirent_is_file_with_suffix(const struct dirent *de, const char *suffix);
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);
unsigned long long random_ull(void);
#define __DEFINE_STRING_TABLE_LOOKUP(name,type,scope) \
scope const char *name##_to_string(type i) { \
if (i < 0 || i >= (type) ELEMENTSOF(name##_table)) \
return NULL; \
return name##_table[i]; \
} \
scope 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__
#define DEFINE_STRING_TABLE_LOOKUP(name,type) __DEFINE_STRING_TABLE_LOOKUP(name,type,)
#define DEFINE_PRIVATE_STRING_TABLE_LOOKUP(name,type) __DEFINE_STRING_TABLE_LOOKUP(name,type,static)
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, usec_t timeout, bool *need_nl);
int ask(char *ret, const char *replies, const char *text, ...);
int reset_terminal_fd(int fd, bool switch_to_text);
int reset_terminal(const char *name);
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[]);
int fopen_temporary(const char *path, FILE **_f, char **_temp_path);
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);
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);
bool hostname_is_set(void);
char *getlogname_malloc(void);
int getttyname_malloc(int fd, char **r);
int getttyname_harder(int fd, char **r);
int get_ctty_devnr(pid_t pid, dev_t *d);
int get_ctty(pid_t, dev_t *_devnr, char **r);
int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid);
int fchmod_and_fchown(int fd, mode_t mode, uid_t uid, gid_t gid);
int rm_rf_children(int fd, bool only_dirs, bool honour_sticky, struct stat *root_dev);
int rm_rf(const char *path, bool only_dirs, bool delete_root, bool honour_sticky);
int pipe_eof(int fd);
cpu_set_t *cpu_set_malloc(unsigned *ncpus);
void status_vprintf(const char *status, bool ellipse, const char *format, va_list ap);
void status_printf(const char *status, bool ellipse, const char *format, ...);
void status_welcome(void);
int fd_columns(int fd);
unsigned columns(void);
int fd_lines(int fd);
unsigned lines(void);
int running_in_chroot(void);
char *ellipsize(const char *s, size_t length, unsigned percent);
char *ellipsize_mem(const char *s, size_t old_length, size_t new_length, unsigned percent);
int touch(const char *path);
char *unquote(const char *s, const char *quotes);
char *normalize_env_assignment(const char *s);
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);
int null_or_empty_path(const char *fn);
DIR *xopendirat(int dirfd, const char *name, int flags);
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);
bool tty_is_vc(const char *tty);
bool tty_is_vc_resolve(const char *tty);
bool tty_is_console(const char *tty);
int vtnr_from_tty(const char *tty);
const char *default_term_for_tty(const char *tty);
void execute_directory(const char *directory, DIR *_d, char *argv[]);
int kill_and_sigcont(pid_t pid, int sig);
bool nulstr_contains(const char *nulstr, const char *needle);
bool plymouth_running(void);
void parse_syslog_priority(char **p, int *priority);
void skip_syslog_pid(char **buf);
void skip_syslog_date(char **buf);
bool hostname_is_valid(const char *s);
char *hostname_cleanup(char *s);
char *strshorten(char *s, size_t l);
int terminal_vhangup_fd(int fd);
int terminal_vhangup(const char *name);
int vt_disallocate(const char *name);
int copy_file(const char *from, const char *to);
int symlink_or_copy(const char *from, const char *to);
int symlink_or_copy_atomic(const char *from, const char *to);
int fchmod_umask(int fd, mode_t mode);
bool display_is_local(const char *display);
int socket_from_display(const char *display, char **path);
int get_user_creds(const char **username, uid_t *uid, gid_t *gid, const char **home);
int get_group_creds(const char **groupname, gid_t *gid);
int in_group(const char *name);
int glob_exists(const char *path);
int dirent_ensure_type(DIR *d, struct dirent *de);
int in_search_path(const char *path, char **search);
int get_files_in_directory(const char *path, char ***list);
char *join(const char *x, ...) _sentinel_;
bool is_main_thread(void);
bool in_charset(const char *s, const char *charset);
int block_get_whole_disk(dev_t d, dev_t *ret);
int file_is_priv_sticky(const char *p);
int strdup_or_null(const char *a, char **b);
#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_unshifted_to_string(int i);
int log_facility_unshifted_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);
extern int saved_argc;
extern char **saved_argv;
bool kexec_loaded(void);
int prot_from_flags(int flags);
char *format_bytes(char *buf, size_t l, off_t t);
int fd_wait_for_event(int fd, int event, usec_t timeout);
void *memdup(const void *p, size_t l);
int is_kernel_thread(pid_t pid);
static inline void freep(void *p)
{
free(*(void **)p);
}
static inline void fclosep(FILE **f)
{
if (*f)
fclose(*f);
}
static inline void pclosep(FILE **f)
{
if (*f)
pclose(*f);
}
static inline void closep(int *fd)
{
if (*fd >= 0)
close_nointr_nofail(*fd);
}
static inline void closedirp(DIR **d)
{
if (*d)
closedir(*d);
}
static inline void umaskp(mode_t *u)
{
umask(*u);
}
#define _cleanup_free_ _cleanup_(freep)
#define _cleanup_fclose_ _cleanup_(fclosep)
#define _cleanup_pclose_ _cleanup_(pclosep)
#define _cleanup_close_ _cleanup_(closep)
#define _cleanup_closedir_ _cleanup_(closedirp)
#define _cleanup_umask_ _cleanup_(umaskp)
#define _cleanup_globfree_ _cleanup_(globfree)
int fd_inc_sndbuf(int fd, size_t n);
int fd_inc_rcvbuf(int fd, size_t n);
int fork_agent(pid_t *pid, const int except[], unsigned n_except, const char *path, ...);
int setrlimit_closest(int resource, const struct rlimit *rlim);
int getenv_for_pid(pid_t pid, const char *field, char **_value);
int can_sleep(const char *type);
bool is_valid_documentation_url(const char *url);
bool in_initrd(void);
void warn_melody(void);
char *strjoin(const char *x, ...) _sentinel_;
#define DEFINE_TRIVIAL_CLEANUP_FUNC(type, func) \
static inline void func##p(type *p) { \
if (*p) \
func(*p); \
} \
struct __useless_struct_to_allow_trailing_semicolon__
char *split_quoted(const char *c, size_t *l, char **state);
char *cunescape_length(const char *s, size_t length);
int unhexchar(char c) _const_;
int unoctchar(char c) _const_;
#endif