***/
#include <alloca.h>
+#include <fcntl.h>
#include <inttypes.h>
#include <time.h>
-#include <sys/time.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdlib.h>
#include <sched.h>
#include <limits.h>
#include <sys/types.h>
+#include <sys/socket.h>
#include <sys/stat.h>
#include <dirent.h>
-#include <sys/resource.h>
#include <stddef.h>
#include <unistd.h>
#include <locale.h>
#include <mntent.h>
+#include <sys/inotify.h>
+#include <sys/statfs.h>
#include "macro.h"
+#include "missing.h"
#include "time-util.h"
-
-union dirent_storage {
- struct dirent de;
- uint8_t storage[offsetof(struct dirent, d_name) +
- ((NAME_MAX + 1 + sizeof(long)) & ~(sizeof(long) - 1))];
-};
+#include "formats-util.h"
/* What is interpreted as whitespace? */
#define WHITESPACE " \t\n\r"
-#define NEWLINE "\n\r"
-#define QUOTES "\"\'"
-#define COMMENTS "#;"
+#define NEWLINE "\n\r"
+#define QUOTES "\"\'"
+#define COMMENTS "#;"
+#define GLOB_CHARS "*?["
+
+/* What characters are special in the shell? */
+/* must be escaped outside and inside double-quotes */
+#define SHELL_NEED_ESCAPE "\"\\`$"
+/* can be escaped or double-quoted */
+#define SHELL_NEED_QUOTES SHELL_NEED_ESCAPE GLOB_CHARS "'()<>|&;"
#define FORMAT_BYTES_MAX 8
-#define ANSI_HIGHLIGHT_ON "\x1B[1;39m"
-#define ANSI_RED_ON "\x1B[31m"
-#define ANSI_HIGHLIGHT_RED_ON "\x1B[1;31m"
-#define ANSI_GREEN_ON "\x1B[32m"
-#define ANSI_HIGHLIGHT_GREEN_ON "\x1B[1;32m"
-#define ANSI_HIGHLIGHT_YELLOW_ON "\x1B[1;33m"
-#define ANSI_HIGHLIGHT_BLUE_ON "\x1B[1;34m"
-#define ANSI_HIGHLIGHT_OFF "\x1B[0m"
-#define ANSI_ERASE_TO_END_OF_LINE "\x1B[K"
-
-size_t page_size(void);
+size_t page_size(void) _pure_;
#define PAGE_ALIGN(l) ALIGN_TO((l), page_size())
#define streq(a,b) (strcmp((a),(b)) == 0)
#define newa(t, n) ((t*) alloca(sizeof(t)*(n)))
+#define newa0(t, n) ((t*) alloca0(sizeof(t)*(n)))
+
#define newdup(t, p, n) ((t*) memdup_multiply(p, sizeof(t), (n)))
#define malloc0(n) (calloc((n), 1))
return b ? "yes" : "no";
}
+static inline const char* true_false(bool b) {
+ return b ? "true" : "false";
+}
+
+static inline const char* one_zero(bool b) {
+ return b ? "1" : "0";
+}
+
static inline const char* strempty(const char *s) {
return s ? s : "";
}
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);
+static inline char *startswith(const char *s, const char *prefix) {
+ size_t l;
+
+ l = strlen(prefix);
+ if (strncmp(s, prefix, l) == 0)
+ return (char*) s + l;
+
return NULL;
}
-static inline const char *startswith_no_case(const char *s, const char *prefix) {
- if (strncasecmp(s, prefix, strlen(prefix)) == 0)
- return s + strlen(prefix);
+static inline char *startswith_no_case(const char *s, const char *prefix) {
+ size_t l;
+
+ l = strlen(prefix);
+ if (strncasecmp(s, prefix, l) == 0)
+ return (char*) s + l;
+
return NULL;
}
char *endswith(const char *s, const char *postfix) _pure_;
+char *endswith_no_case(const char *s, const char *postfix) _pure_;
-bool first_word(const char *s, const char *word) _pure_;
+char *first_word(const char *s, const char *word) _pure_;
int close_nointr(int fd);
-void close_nointr_nofail(int fd);
+int safe_close(int fd);
+void safe_close_pair(int p[]);
+
void close_many(const int fds[], unsigned n_fd);
+int parse_size(const char *t, off_t base, off_t *size);
+
int parse_boolean(const char *v) _pure_;
-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_atod(const char *s, double *ret_d);
-#if __WORDSIZE == 32
+int safe_atou8(const char *s, uint8_t *ret);
+
+#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);
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);
+int safe_atou16(const char *s, uint16_t *ret);
+int safe_atoi16(const char *s, int16_t *ret);
+
+const char* split(const char **state, size_t *l, const char *separator, bool quoted);
#define FOREACH_WORD(word, length, s, state) \
- for ((state) = NULL, (word) = split((s), &(length), WHITESPACE, &(state)); (word); (word) = split((s), &(length), WHITESPACE, &(state)))
+ _FOREACH_WORD(word, length, s, WHITESPACE, false, 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)))
+ _FOREACH_WORD(word, length, s, separator, false, 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)))
+ _FOREACH_WORD(word, length, s, WHITESPACE, true, 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);
+#define _FOREACH_WORD(word, length, s, separator, quoted, state) \
+ for ((state) = (s), (word) = split(&(state), &(length), (separator), (quoted)); (word); (word) = split(&(state), &(length), (separator), (quoted)))
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 readlinkat_malloc(int fd, const char *p, char **ret);
int readlink_malloc(const char *p, char **r);
+int readlink_value(const char *p, char **ret);
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);
+int reset_signal_mask(void);
char *strstrip(char *s);
char *delete_chars(char *s, const char *bad);
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);
-int get_process_gid(pid_t pid, gid_t *gid);
-int get_process_capeff(pid_t pid, char **capeff);
-
char hexchar(int x) _const_;
int unhexchar(char c) _const_;
char octchar(int x) _const_;
int undecchar(char c) _const_;
char *cescape(const char *s);
-char *cunescape(const char *s);
-char *cunescape_length(const char *s, size_t length);
-char *cunescape_length_with_prefix(const char *s, size_t length, const char *prefix);
+size_t cescape_char(char c, char *buf);
+
+typedef enum UnescapeFlags {
+ UNESCAPE_RELAX = 1,
+} UnescapeFlags;
+
+int cunescape(const char *s, UnescapeFlags flags, char **ret);
+int cunescape_length(const char *s, size_t length, UnescapeFlags flags, char **ret);
+int cunescape_length_with_prefix(const char *s, size_t length, const char *prefix, UnescapeFlags flags, char **ret);
char *xescape(const char *s, const char *bad);
bool dirent_is_file(const struct dirent *de) _pure_;
bool dirent_is_file_with_suffix(const struct dirent *de, const char *suffix) _pure_;
-bool ignore_file(const char *filename) _pure_;
+bool hidden_file(const char *filename) _pure_;
bool chars_intersect(const char *a, const char *b) _pure_;
-int make_stdio(int fd);
-int make_null_stdio(void);
-int make_console_stdio(void);
-
-unsigned long long random_ull(void);
-unsigned random_u(void);
-
/* For basic lookup tables with strictly enumerated entries */
-#define __DEFINE_STRING_TABLE_LOOKUP(name,type,scope) \
+#define _DEFINE_STRING_TABLE_LOOKUP_TO_STRING(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; \
- assert(s); \
- for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \
- if (name##_table[i] && \
- streq(name##_table[i], s)) \
- return i; \
- return (type) -1; \
- } \
+ }
+
+ssize_t string_table_lookup(const char * const *table, size_t len, const char *key);
+
+#define _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,scope) \
+ scope inline type name##_from_string(const char *s) { \
+ return (type)string_table_lookup(name##_table, ELEMENTSOF(name##_table), s); \
+ }
+
+#define _DEFINE_STRING_TABLE_LOOKUP(name,type,scope) \
+ _DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,scope) \
+ _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,scope) \
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)
+#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)
+#define DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(name,type) _DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,static)
+#define DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(name,type) _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,static)
/* For string conversions where numbers are also acceptable */
#define DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(name,type,max) \
if (!s) \
return log_oom(); \
} else { \
- r = asprintf(&s, "%u", i); \
+ r = asprintf(&s, "%i", i); \
if (r < 0) \
return log_oom(); \
} \
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, ...) _printf_(3, 4);
-
-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, usec_t timeout);
-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);
+int loop_read_exact(int fd, void *buf, size_t nbytes, bool do_poll);
+int 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);
char* dirname_malloc(const char *path);
-void rename_process(const char name[8]);
-
void sigset_add_many(sigset_t *ss, ...);
+int sigprocmask_many(int how, ...);
-bool hostname_is_set(void);
-
-char* gethostname_malloc(void);
+char* lookup_uid(uid_t uid);
char* getlogname_malloc(void);
char* getusername_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_children_dangerous(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 rm_rf_dangerous(const char *path, bool only_dirs, bool delete_root, bool honour_sticky);
+bool is_temporary_fs(const struct statfs *s) _pure_;
+int fd_is_temporary_fs(int fd);
int pipe_eof(int fd);
cpu_set_t* cpu_set_malloc(unsigned *ncpus);
-int status_vprintf(const char *status, bool ellipse, bool ephemeral, const char *format, va_list ap) _printf_(4,0);
-int status_printf(const char *status, bool ellipse, bool ephemeral, const char *format, ...) _printf_(4,5);
-int status_welcome(void);
-
-int fd_columns(int fd);
-unsigned columns(void);
-int fd_lines(int fd);
-unsigned lines(void);
-void columns_lines_cache_reset(int _unused_ signum);
-
-bool on_tty(void);
-
-static inline const char *ansi_highlight(void) {
- return on_tty() ? ANSI_HIGHLIGHT_ON : "";
-}
-
-static inline const char *ansi_highlight_red(void) {
- return on_tty() ? ANSI_HIGHLIGHT_RED_ON : "";
-}
-
-static inline const char *ansi_highlight_green(void) {
- return on_tty() ? ANSI_HIGHLIGHT_GREEN_ON : "";
-}
-
-static inline const char *ansi_highlight_yellow(void) {
- return on_tty() ? ANSI_HIGHLIGHT_YELLOW_ON : "";
-}
-
-static inline const char *ansi_highlight_blue(void) {
- return on_tty() ? ANSI_HIGHLIGHT_BLUE_ON : "";
-}
+#define xsprintf(buf, fmt, ...) assert_se((size_t) snprintf(buf, ELEMENTSOF(buf), fmt, __VA_ARGS__) < ELEMENTSOF(buf))
-static inline const char *ansi_highlight_off(void) {
- return on_tty() ? ANSI_HIGHLIGHT_OFF : "";
-}
+int files_same(const char *filea, const char *fileb);
int running_in_chroot(void);
/* bytes columns */
char *ellipsize_mem(const char *s, size_t old_length, size_t new_length, unsigned percent);
+int touch_file(const char *path, bool parents, usec_t stamp, uid_t uid, gid_t gid, mode_t mode);
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);
+noreturn void freeze(void);
bool null_or_empty(struct stat *st) _pure_;
int null_or_empty_path(const char *fn);
+int null_or_empty_fd(int fd);
DIR *xopendirat(int dirfd, const char *name, int flags);
char *fstab_node_to_udev_node(const char *p);
-char *resolve_dev_console(char **active);
-bool tty_is_vc(const char *tty);
-bool tty_is_vc_resolve(const char *tty);
-bool tty_is_console(const char *tty) _pure_;
-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);
+void execute_directories(const char* const* directories, usec_t timeout, char *argv[]);
bool nulstr_contains(const char*nulstr, const char *needle);
bool plymouth_running(void);
-bool hostname_is_valid(const char *s) _pure_;
-char* hostname_cleanup(char *s, bool lowercase);
+bool machine_name_is_valid(const char *s) _pure_;
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 flags);
+int symlink_idempotent(const char *from, const char *to);
int symlink_atomic(const char *from, const char *to);
+int mknod_atomic(const char *path, mode_t mode, dev_t dev);
+int mkfifo_atomic(const char *path, mode_t mode);
int fchmod_umask(int fd, mode_t mode);
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 *strjoin(const char *x, ...) _sentinel_;
bool is_main_thread(void);
-bool in_charset(const char *s, const char* charset) _pure_;
+static inline bool _pure_ in_charset(const char *s, const char* charset) {
+ assert(s);
+ assert(charset);
+ return s[strspn(s, charset)] == '\0';
+}
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)
void* memdup(const void *p, size_t l) _alloc_(2);
-int is_kernel_thread(pid_t pid);
-
int fd_inc_sndbuf(int fd, size_t n);
int fd_inc_rcvbuf(int fd, size_t n);
int setrlimit_closest(int resource, const struct rlimit *rlim);
-int getenv_for_pid(pid_t pid, const char *field, char **_value);
+bool http_url_is_valid(const char *url) _pure_;
+bool documentation_url_is_valid(const char *url) _pure_;
-bool is_valid_documentation_url(const char *url) _pure_;
+bool http_etag_is_valid(const char *etag);
bool in_initrd(void);
-void warn_melody(void);
-
int get_home_dir(char **ret);
int get_shell(char **_ret);
free(*(void**) p);
}
-#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__
-
static inline void closep(int *fd) {
- if (*fd >= 0)
- close_nointr_nofail(*fd);
+ safe_close(*fd);
}
static inline void umaskp(mode_t *u) {
umask(*u);
}
-static inline void close_pipep(int (*p)[2]) {
- close_pipe(*p);
+static inline void close_pairp(int (*p)[2]) {
+ safe_close_pair(*p);
}
DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, fclose);
#define _cleanup_pclose_ _cleanup_(pclosep)
#define _cleanup_closedir_ _cleanup_(closedirp)
#define _cleanup_endmntent_ _cleanup_(endmntentp)
-#define _cleanup_close_pipe_ _cleanup_(close_pipep)
+#define _cleanup_close_pair_ _cleanup_(close_pairp)
_malloc_ _alloc_(1, 2) static inline void *malloc_multiply(size_t a, size_t b) {
- if (_unlikely_(b == 0 || a > ((size_t) -1) / b))
+ if (_unlikely_(b != 0 && a > ((size_t) -1) / b))
return NULL;
return malloc(a * b);
}
+_alloc_(2, 3) static inline void *realloc_multiply(void *p, size_t a, size_t b) {
+ if (_unlikely_(b != 0 && a > ((size_t) -1) / b))
+ return NULL;
+
+ return realloc(p, a * b);
+}
+
_alloc_(2, 3) static inline void *memdup_multiply(const void *p, size_t a, size_t b) {
- if (_unlikely_(b == 0 || a > ((size_t) -1) / b))
+ if (_unlikely_(b != 0 && a > ((size_t) -1) / b))
return NULL;
return memdup(p, a * b);
}
-bool filename_is_safe(const char *p) _pure_;
+bool filename_is_valid(const char *p) _pure_;
bool path_is_safe(const char *p) _pure_;
bool string_is_safe(const char *p) _pure_;
-bool string_has_cc(const char *p) _pure_;
+bool string_has_cc(const char *p, const char *ok) _pure_;
+
+/**
+ * Check if a string contains any glob patterns.
+ */
+_pure_ static inline bool string_is_glob(const char *p) {
+ return !!strpbrk(p, GLOB_CHARS);
+}
void *xbsearch_r(const void *key, const void *base, size_t nmemb, size_t size,
int (*compar) (const void *, const void *, void *),
void *arg);
+#define _(String) gettext (String)
+void init_gettext(void);
bool is_locale_utf8(void);
typedef enum DrawSpecialChar {
- DRAW_TREE_VERT,
+ DRAW_TREE_VERTICAL,
DRAW_TREE_BRANCH,
DRAW_TREE_RIGHT,
DRAW_TREE_SPACE,
DRAW_TRIANGULAR_BULLET,
DRAW_BLACK_CIRCLE,
+ DRAW_ARROW,
+ DRAW_DASH,
_DRAW_SPECIAL_CHAR_MAX
} DrawSpecialChar;
+
const char *draw_special_char(DrawSpecialChar ch);
char *strreplace(const char *text, const char *old_string, const char *new_string);
int on_ac_power(void);
-int search_and_fopen(const char *path, const char *mode, const char **search, FILE **_f);
-int search_and_fopen_nulstr(const char *path, const char *mode, const char *search, FILE **_f);
+int search_and_fopen(const char *path, const char *mode, const char *root, const char **search, FILE **_f);
+int search_and_fopen_nulstr(const char *path, const char *mode, const char *root, const char *search, FILE **_f);
#define FOREACH_LINE(line, f, on_error) \
for (;;) \
on_error; \
} \
break; \
- } else if (ignore_file((de)->d_name)) \
+ } else if (hidden_file((de)->d_name)) \
continue; \
else
+#define FOREACH_DIRENT_ALL(de, d, on_error) \
+ for (errno = 0, de = readdir(d);; errno = 0, de = readdir(d)) \
+ if (!de) { \
+ if (errno > 0) { \
+ on_error; \
+ } \
+ break; \
+ } else
+
static inline void *mempset(void *s, int c, size_t n) {
memset(s, c, n);
return (uint8_t*)s + n;
char *strextend(char **x, ...) _sentinel_;
char *strrep(const char *s, unsigned n);
-void* greedy_realloc(void **p, size_t *allocated, size_t need);
-void* greedy_realloc0(void **p, size_t *allocated, size_t need);
-#define GREEDY_REALLOC(array, allocated, need) \
- greedy_realloc((void**) &(array), &(allocated), sizeof((array)[0]) * (need))
-#define GREEDY_REALLOC0(array, allocated, need) \
- greedy_realloc0((void**) &(array), &(allocated), sizeof((array)[0]) * (need))
+void* greedy_realloc(void **p, size_t *allocated, size_t need, size_t size);
+void* greedy_realloc0(void **p, size_t *allocated, size_t need, size_t size);
+#define GREEDY_REALLOC(array, allocated, need) \
+ greedy_realloc((void**) &(array), &(allocated), (need), sizeof((array)[0]))
+
+#define GREEDY_REALLOC0(array, allocated, need) \
+ greedy_realloc0((void**) &(array), &(allocated), (need), sizeof((array)[0]))
static inline void _reset_errno_(int *saved_errno) {
errno = *saved_errno;
#define PROTECT_ERRNO _cleanup_(_reset_errno_) __attribute__((unused)) int _saved_errno_ = errno
+static inline int negative_errno(void) {
+ /* This helper should be used to shut up gcc if you know 'errno' is
+ * negative. Instead of "return -errno;", use "return negative_errno();"
+ * It will suppress bogus gcc warnings in case it assumes 'errno' might
+ * be 0 and thus the caller's error-handling might not be triggered. */
+ assert_return(errno > 0, -EINVAL);
+ return -errno;
+}
+
struct _umask_struct_ {
mode_t mask;
bool quit;
_saved_umask_.quit = true)
static inline unsigned u64log2(uint64_t n) {
- return (n > 1) ? __builtin_clzll(n) ^ 63U : 0;
+#if __SIZEOF_LONG_LONG__ == 8
+ return (n > 1) ? (unsigned) __builtin_clzll(n) ^ 63U : 0;
+#else
+#error "Wut?"
+#endif
+}
+
+static inline unsigned u32ctz(uint32_t n) {
+#if __SIZEOF_INT__ == 4
+ return __builtin_ctz(n);
+#else
+#error "Wut?"
+#endif
+}
+
+static inline unsigned log2i(int x) {
+ assert(x > 0);
+
+ return __SIZEOF_INT__ * 8 - __builtin_clz(x) - 1;
+}
+
+static inline unsigned log2u(unsigned x) {
+ assert(x > 0);
+
+ return sizeof(unsigned) * 8 - __builtin_clz(x) - 1;
+}
+
+static inline unsigned log2u_round_up(unsigned x) {
+ assert(x > 0);
+
+ if (x == 1)
+ return 0;
+
+ return log2u(x - 1) + 1;
}
static inline bool logind_running(void) {
(void *) memset(_new_, 0, _len_); \
})
-#define strappenda(a, b) \
- ({ \
- const char *_a_ = (a), *_b_ = (b); \
- char *_c_; \
- size_t _x_, _y_; \
- _x_ = strlen(_a_); \
- _y_ = strlen(_b_); \
- _c_ = alloca(_x_ + _y_ + 1); \
- strcpy(stpcpy(_c_, _a_), _b_); \
- _c_; \
+/* It's not clear what alignment glibc/gcc alloca() guarantee, hence provide a guaranteed safe version */
+#define alloca_align(size, align) \
+ ({ \
+ void *_ptr_; \
+ size_t _mask_ = (align) - 1; \
+ _ptr_ = alloca((size) + _mask_); \
+ (void*)(((uintptr_t)_ptr_ + _mask_) & ~_mask_); \
})
-#define procfs_file_alloca(pid, field) \
+#define alloca0_align(size, align) \
({ \
- pid_t _pid_ = (pid); \
- char *_r_; \
- _r_ = alloca(sizeof("/proc/") -1 + DECIMAL_STR_MAX(pid_t) + 1 + sizeof(field)); \
- sprintf(_r_, "/proc/%lu/" field, (unsigned long) _pid_); \
- _r_; \
+ void *_new_; \
+ size_t _size_ = (size); \
+ _new_ = alloca_align(_size_, (align)); \
+ (void*)memset(_new_, 0, _size_); \
})
-struct _locale_struct_ {
- locale_t saved_locale;
- locale_t new_locale;
- bool quit;
-};
-
-static inline void _reset_locale_(struct _locale_struct_ *s) {
- PROTECT_ERRNO;
- if (s->saved_locale != (locale_t) 0)
- uselocale(s->saved_locale);
- if (s->new_locale != (locale_t) 0)
- freelocale(s->new_locale);
-}
-
-#define RUN_WITH_LOCALE(mask, loc) \
- for (_cleanup_(_reset_locale_) struct _locale_struct_ _saved_locale_ = { (locale_t) 0, (locale_t) 0, false }; \
- ({ \
- if (!_saved_locale_.quit) { \
- PROTECT_ERRNO; \
- _saved_locale_.new_locale = newlocale((mask), (loc), (locale_t) 0); \
- if (_saved_locale_.new_locale != (locale_t) 0) \
- _saved_locale_.saved_locale = uselocale(_saved_locale_.new_locale); \
- } \
- !_saved_locale_.quit; }) ; \
- _saved_locale_.quit = true)
+#define strjoina(a, ...) \
+ ({ \
+ const char *_appendees_[] = { a, __VA_ARGS__ }; \
+ char *_d_, *_p_; \
+ int _len_ = 0; \
+ unsigned _i_; \
+ for (_i_ = 0; _i_ < ELEMENTSOF(_appendees_) && _appendees_[_i_]; _i_++) \
+ _len_ += strlen(_appendees_[_i_]); \
+ _p_ = _d_ = alloca(_len_ + 1); \
+ for (_i_ = 0; _i_ < ELEMENTSOF(_appendees_) && _appendees_[_i_]; _i_++) \
+ _p_ = stpcpy(_p_, _appendees_[_i_]); \
+ *_p_ = 0; \
+ _d_; \
+ })
bool id128_is_valid(const char *s) _pure_;
-void parse_user_at_host(char *arg, char **user, char **host);
int split_pair(const char *s, const char *sep, char **l, char **r);
* Normal qsort requires base to be nonnull. Here were require
* that only if nmemb > 0.
*/
-static inline void qsort_safe(void *base, size_t nmemb, size_t size,
- int (*compar)(const void *, const void *)) {
- if (nmemb) {
- assert(base);
- qsort(base, nmemb, size, compar);
- }
+static inline void qsort_safe(void *base, size_t nmemb, size_t size, comparison_fn_t compar) {
+ if (nmemb <= 0)
+ return;
+
+ assert(base);
+ qsort(base, nmemb, size, compar);
+}
+
+/* Normal memmem() requires haystack to be nonnull, which is annoying for zero-length buffers */
+static inline void *memmem_safe(const void *haystack, size_t haystacklen, const void *needle, size_t needlelen) {
+
+ if (needlelen <= 0)
+ return (void*) haystack;
+
+ if (haystacklen < needlelen)
+ return NULL;
+
+ assert(haystack);
+ assert(needle);
+
+ return memmem(haystack, haystacklen, needle, needlelen);
}
int proc_cmdline(char **ret);
+int parse_proc_cmdline(int (*parse_word)(const char *key, const char *value));
+int get_proc_cmdline_key(const char *parameter, char **value);
int container_get_leader(const char *machine, pid_t *pid);
-int namespace_open(pid_t pid, int *pidns_fd, int *mntns_fd, int *root_fd);
-int namespace_enter(int pidns_fd, int mntns_fd, int root_fd);
+int namespace_open(pid_t pid, int *pidns_fd, int *mntns_fd, int *netns_fd, int *root_fd);
+int namespace_enter(int pidns_fd, int mntns_fd, int netns_fd, int root_fd);
+
+int getpeercred(int fd, struct ucred *ucred);
+int getpeersec(int fd, char **ret);
+
+int writev_safe(int fd, const struct iovec *w, int j);
+
+int mkostemp_safe(char *pattern, int flags);
+int open_tmpfile(const char *path, int flags);
+
+int fd_warn_permissions(const char *path, int fd);
+
+unsigned long personality_from_string(const char *p);
+const char *personality_to_string(unsigned long);
+
+uint64_t physical_memory(void);
+
+void hexdump(FILE *f, const void *p, size_t s);
+
+union file_handle_union {
+ struct file_handle handle;
+ char padding[sizeof(struct file_handle) + MAX_HANDLE_SZ];
+};
+#define FILE_HANDLE_INIT { .handle.handle_bytes = MAX_HANDLE_SZ }
+
+int update_reboot_param_file(const char *param);
+
+int umount_recursive(const char *target, int flags);
+
+int bind_remount_recursive(const char *prefix, bool ro);
+
+int fflush_and_check(FILE *f);
+
+int tempfn_xxxxxx(const char *p, char **ret);
+int tempfn_random(const char *p, char **ret);
+int tempfn_random_child(const char *p, char **ret);
+
+int take_password_lock(const char *root);
+
+int is_symlink(const char *path);
+int is_dir(const char *path, bool follow);
+int is_device_node(const char *path);
+
+typedef enum UnquoteFlags {
+ UNQUOTE_RELAX = 1,
+ UNQUOTE_CUNESCAPE = 2,
+} UnquoteFlags;
+
+int unquote_first_word(const char **p, char **ret, UnquoteFlags flags);
+int unquote_many_words(const char **p, UnquoteFlags flags, ...) _sentinel_;
+
+int free_and_strdup(char **p, const char *s);
+
+#define INOTIFY_EVENT_MAX (sizeof(struct inotify_event) + NAME_MAX + 1)
+
+#define FOREACH_INOTIFY_EVENT(e, buffer, sz) \
+ for ((e) = &buffer.ev; \
+ (uint8_t*) (e) < (uint8_t*) (buffer.raw) + (sz); \
+ (e) = (struct inotify_event*) ((uint8_t*) (e) + sizeof(struct inotify_event) + (e)->len))
+
+union inotify_event_buffer {
+ struct inotify_event ev;
+ uint8_t raw[INOTIFY_EVENT_MAX];
+};
+
+#define laccess(path, mode) faccessat(AT_FDCWD, (path), (mode), AT_SYMLINK_NOFOLLOW)
+
+int ptsname_malloc(int fd, char **ret);
+
+int openpt_in_namespace(pid_t pid, int flags);
+
+ssize_t fgetxattrat_fake(int dirfd, const char *filename, const char *attribute, void *value, size_t size, int flags);
+
+int fd_setcrtime(int fd, usec_t usec);
+int fd_getcrtime(int fd, usec_t *usec);
+int path_getcrtime(const char *p, usec_t *usec);
+int fd_getcrtime_at(int dirfd, const char *name, usec_t *usec, int flags);
+
+int chattr_fd(int fd, unsigned value, unsigned mask);
+int chattr_path(const char *p, unsigned value, unsigned mask);
+
+int read_attr_fd(int fd, unsigned *ret);
+int read_attr_path(const char *p, unsigned *ret);
+
+#define RLIMIT_MAKE_CONST(lim) ((struct rlimit) { lim, lim })
+
+ssize_t sparse_write(int fd, const void *p, size_t sz, size_t run_length);
+
+void sigkill_wait(pid_t *pid);
+#define _cleanup_sigkill_wait_ _cleanup_(sigkill_wait)
+
+int syslog_parse_priority(const char **p, int *priority, bool with_facility);
+
+void cmsg_close_all(struct msghdr *mh);
+
+int rename_noreplace(int olddirfd, const char *oldpath, int newdirfd, const char *newpath);
+
+char *shell_maybe_quote(const char *s);
+
+int parse_mode(const char *s, mode_t *ret);
+
+int mount_move_root(const char *path);
~ianmdlvl / elogind.git / blobdiff