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-rw-r--r--src/shared/signal-util.c268
1 files changed, 0 insertions, 268 deletions
diff --git a/src/shared/signal-util.c b/src/shared/signal-util.c
deleted file mode 100644
index 84cf42b285..0000000000
--- a/src/shared/signal-util.c
+++ /dev/null
@@ -1,268 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2015 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/>.
-***/
-
-#include "util.h"
-#include "signal-util.h"
-
-int reset_all_signal_handlers(void) {
- static const struct sigaction sa = {
- .sa_handler = SIG_DFL,
- .sa_flags = SA_RESTART,
- };
- int sig, r = 0;
-
- for (sig = 1; sig < _NSIG; sig++) {
-
- /* 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;
-}
-
-static int sigaction_many_ap(const struct sigaction *sa, int sig, va_list ap) {
- int r = 0;
-
- /* negative signal ends the list. 0 signal is skipped. */
-
- if (sig < 0)
- return 0;
-
- if (sig > 0) {
- if (sigaction(sig, sa, NULL) < 0)
- r = -errno;
- }
-
- while ((sig = va_arg(ap, int)) >= 0) {
-
- if (sig == 0)
- continue;
-
- if (sigaction(sig, sa, NULL) < 0) {
- if (r >= 0)
- r = -errno;
- }
- }
-
- return r;
-}
-
-int sigaction_many(const struct sigaction *sa, ...) {
- va_list ap;
- int r;
-
- va_start(ap, sa);
- r = sigaction_many_ap(sa, 0, ap);
- va_end(ap);
-
- return r;
-}
-
-int ignore_signals(int sig, ...) {
-
- static const struct sigaction sa = {
- .sa_handler = SIG_IGN,
- .sa_flags = SA_RESTART,
- };
-
- va_list ap;
- int r;
-
- va_start(ap, sig);
- r = sigaction_many_ap(&sa, sig, ap);
- va_end(ap);
-
- return r;
-}
-
-int default_signals(int sig, ...) {
-
- static const struct sigaction sa = {
- .sa_handler = SIG_DFL,
- .sa_flags = SA_RESTART,
- };
-
- va_list ap;
- int r;
-
- va_start(ap, sig);
- r = sigaction_many_ap(&sa, sig, ap);
- va_end(ap);
-
- return r;
-}
-
-static int sigset_add_many_ap(sigset_t *ss, va_list ap) {
- int sig, r = 0;
-
- assert(ss);
-
- while ((sig = va_arg(ap, int)) >= 0) {
-
- if (sig == 0)
- continue;
-
- if (sigaddset(ss, sig) < 0) {
- if (r >= 0)
- r = -errno;
- }
- }
-
- return r;
-}
-
-int sigset_add_many(sigset_t *ss, ...) {
- va_list ap;
- int r;
-
- va_start(ap, ss);
- r = sigset_add_many_ap(ss, ap);
- va_end(ap);
-
- return r;
-}
-
-int sigprocmask_many(int how, ...) {
- va_list ap;
- sigset_t ss;
- int r;
-
- if (sigemptyset(&ss) < 0)
- return -errno;
-
- va_start(ap, how);
- r = sigset_add_many_ap(&ss, ap);
- va_end(ap);
-
- if (r < 0)
- return r;
-
- if (sigprocmask(how, &ss, NULL) < 0)
- return -errno;
-
- return 0;
-}
-
-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;
-}
-
-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;
-}