util: split out signal-util.[ch] from util.[ch]

[elogind.git] / src / shared / util.c

diff --git a/src/shared/util.c b/src/shared/util.c
index 6256c005dbb35f234ee900ba60578a5d784f4f47..4eb1d27069a59ce0dfe99b4d490dd3c2503ca1be 100644 (file)
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -93,6 +93,7 @@
 #include "random-util.h"
 #include "terminal-util.h"
 #include "hostname-util.h"
+#include "signal-util.h"
 
 /* Put this test here for a lack of better place */
 assert_cc(EAGAIN == EWOULDBLOCK);
@@ -750,41 +751,6 @@ int readlink_and_canonicalize(const char *p, char **r) {
         return 0;
 }
 
-int reset_all_signal_handlers(void) {
-        int sig, r = 0;
-
-        for (sig = 1; sig < _NSIG; sig++) {
-                struct sigaction sa = {
-                        .sa_handler = SIG_DFL,
-                        .sa_flags = SA_RESTART,
-                };
-
-                /* These two cannot be caught... */
-                if (sig == SIGKILL || sig == SIGSTOP)
-                        continue;
-
-                /* On Linux the first two RT signals are reserved by
-                 * glibc, and sigaction() will return EINVAL for them. */
-                if ((sigaction(sig, &sa, NULL) < 0))
-                        if (errno != EINVAL && r == 0)
-                                r = -errno;
-        }
-
-        return r;
-}
-
-int reset_signal_mask(void) {
-        sigset_t ss;
-
-        if (sigemptyset(&ss) < 0)
-                return -errno;
-
-        if (sigprocmask(SIG_SETMASK, &ss, NULL) < 0)
-                return -errno;
-
-        return 0;
-}
-
 char *strstrip(char *s) {
         char *e;
 
@@ -1540,59 +1506,6 @@ int flush_fd(int fd) {
         }
 }
 
-int sigaction_many(const struct sigaction *sa, ...) {
-        va_list ap;
-        int r = 0, sig;
-
-        va_start(ap, sa);
-        while ((sig = va_arg(ap, int)) > 0)
-                if (sigaction(sig, sa, NULL) < 0)
-                        r = -errno;
-        va_end(ap);
-
-        return r;
-}
-
-int ignore_signals(int sig, ...) {
-        struct sigaction sa = {
-                .sa_handler = SIG_IGN,
-                .sa_flags = SA_RESTART,
-        };
-        va_list ap;
-        int r = 0;
-
-        if (sigaction(sig, &sa, NULL) < 0)
-                r = -errno;
-
-        va_start(ap, sig);
-        while ((sig = va_arg(ap, int)) > 0)
-                if (sigaction(sig, &sa, NULL) < 0)
-                        r = -errno;
-        va_end(ap);
-
-        return r;
-}
-
-int default_signals(int sig, ...) {
-        struct sigaction sa = {
-                .sa_handler = SIG_DFL,
-                .sa_flags = SA_RESTART,
-        };
-        va_list ap;
-        int r = 0;
-
-        if (sigaction(sig, &sa, NULL) < 0)
-                r = -errno;
-
-        va_start(ap, sig);
-        while ((sig = va_arg(ap, int)) > 0)
-                if (sigaction(sig, &sa, NULL) < 0)
-                        r = -errno;
-        va_end(ap);
-
-        return r;
-}
-
 void safe_close_pair(int p[]) {
         assert(p);
 
@@ -1906,35 +1819,6 @@ void rename_process(const char name[8]) {
         }
 }
 
-void sigset_add_many(sigset_t *ss, ...) {
-        va_list ap;
-        int sig;
-
-        assert(ss);
-
-        va_start(ap, ss);
-        while ((sig = va_arg(ap, int)) > 0)
-                assert_se(sigaddset(ss, sig) == 0);
-        va_end(ap);
-}
-
-int sigprocmask_many(int how, ...) {
-        va_list ap;
-        sigset_t ss;
-        int sig;
-
-        assert_se(sigemptyset(&ss) == 0);
-
-        va_start(ap, how);
-        while ((sig = va_arg(ap, int)) > 0)
-                assert_se(sigaddset(&ss, sig) == 0);
-        va_end(ap);
-
-        if (sigprocmask(how, &ss, NULL) < 0)
-                return -errno;
-
-        return 0;
-}
 char *lookup_uid(uid_t uid) {
         long bufsize;
         char *name;
@@ -2323,18 +2207,6 @@ DIR *xopendirat(int fd, const char *name, int flags) {
         return d;
 }
 
-int signal_from_string_try_harder(const char *s) {
-        int signo;
-        assert(s);
-
-        signo = signal_from_string(s);
-        if (signo <= 0)
-                if (startswith(s, "SIG"))
-                        return signal_from_string(s+3);
-
-        return signo;
-}
-
 static char *tag_to_udev_node(const char *tagvalue, const char *by) {
         _cleanup_free_ char *t = NULL, *u = NULL;
         size_t enc_len;
@@ -3291,81 +3163,6 @@ static const char* const ip_tos_table[] = {
 
 DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(ip_tos, int, 0xff);
 
-static const char *const __signal_table[] = {
-        [SIGHUP] = "HUP",
-        [SIGINT] = "INT",
-        [SIGQUIT] = "QUIT",
-        [SIGILL] = "ILL",
-        [SIGTRAP] = "TRAP",
-        [SIGABRT] = "ABRT",
-        [SIGBUS] = "BUS",
-        [SIGFPE] = "FPE",
-        [SIGKILL] = "KILL",
-        [SIGUSR1] = "USR1",
-        [SIGSEGV] = "SEGV",
-        [SIGUSR2] = "USR2",
-        [SIGPIPE] = "PIPE",
-        [SIGALRM] = "ALRM",
-        [SIGTERM] = "TERM",
-#ifdef SIGSTKFLT
-        [SIGSTKFLT] = "STKFLT",  /* Linux on SPARC doesn't know SIGSTKFLT */
-#endif
-        [SIGCHLD] = "CHLD",
-        [SIGCONT] = "CONT",
-        [SIGSTOP] = "STOP",
-        [SIGTSTP] = "TSTP",
-        [SIGTTIN] = "TTIN",
-        [SIGTTOU] = "TTOU",
-        [SIGURG] = "URG",
-        [SIGXCPU] = "XCPU",
-        [SIGXFSZ] = "XFSZ",
-        [SIGVTALRM] = "VTALRM",
-        [SIGPROF] = "PROF",
-        [SIGWINCH] = "WINCH",
-        [SIGIO] = "IO",
-        [SIGPWR] = "PWR",
-        [SIGSYS] = "SYS"
-};
-
-DEFINE_PRIVATE_STRING_TABLE_LOOKUP(__signal, int);
-
-const char *signal_to_string(int signo) {
-        static thread_local char buf[sizeof("RTMIN+")-1 + DECIMAL_STR_MAX(int) + 1];
-        const char *name;
-
-        name = __signal_to_string(signo);
-        if (name)
-                return name;
-
-        if (signo >= SIGRTMIN && signo <= SIGRTMAX)
-                snprintf(buf, sizeof(buf), "RTMIN+%d", signo - SIGRTMIN);
-        else
-                snprintf(buf, sizeof(buf), "%d", signo);
-
-        return buf;
-}
-
-int signal_from_string(const char *s) {
-        int signo;
-        int offset = 0;
-        unsigned u;
-
-        signo = __signal_from_string(s);
-        if (signo > 0)
-                return signo;
-
-        if (startswith(s, "RTMIN+")) {
-                s += 6;
-                offset = SIGRTMIN;
-        }
-        if (safe_atou(s, &u) >= 0) {
-                signo = (int) u + offset;
-                if (signo > 0 && signo < _NSIG)
-                        return signo;
-        }
-        return -EINVAL;
-}
-
 bool kexec_loaded(void) {
        bool loaded = false;
        char *s;