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manager: Linux on hppa has fewer rtsigs, hence avoid using the higher ones there 

https://bugs.freedesktop.org/show_bug.cgi?id=84931
This commit is contained in:
Lennart Poettering 2014-10-24 13:44:45 +02:00
parent 820c095831
commit 4dffec1459
1 changed files with 27 additions and 2 deletions
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29
src/core/manager.c
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@ -307,11 +307,14 @@ static int manager_setup_signals(Manager *m) {
if (m->test_run)
return 0;
/* We are not interested in SIGSTOP and friends. */
assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
assert_se(sigemptyset(&mask) == 0);
/* We make liberal use of realtime signals here. On
* Linux/glibc we have 30 of them (with the exception of Linux
* on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
* (aka SIGRTMAX). */
assert_se(sigemptyset(&mask) == 0);
sigset_add_many(&mask,
SIGCHLD, /* Child died */
SIGTERM, /* Reexecute daemon */
@ -321,6 +324,7 @@ static int manager_setup_signals(Manager *m) {
SIGINT, /* Kernel sends us this on control-alt-del */
SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */
SIGPWR, /* Some kernel drivers and upsd send us this on power failure */
SIGRTMIN+0, /* systemd: start default.target */
SIGRTMIN+1, /* systemd: isolate rescue.target */
SIGRTMIN+2, /* systemd: isolate emergency.target */
@ -328,19 +332,40 @@ static int manager_setup_signals(Manager *m) {
SIGRTMIN+4, /* systemd: start poweroff.target */
SIGRTMIN+5, /* systemd: start reboot.target */
SIGRTMIN+6, /* systemd: start kexec.target */
/* ... space for more special targets ... */
SIGRTMIN+13, /* systemd: Immediate halt */
SIGRTMIN+14, /* systemd: Immediate poweroff */
SIGRTMIN+15, /* systemd: Immediate reboot */
SIGRTMIN+16, /* systemd: Immediate kexec */
/* ... space for more immediate system state changes ... */
SIGRTMIN+20, /* systemd: enable status messages */
SIGRTMIN+21, /* systemd: disable status messages */
SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */
SIGRTMIN+23, /* systemd: set log level to LOG_INFO */
SIGRTMIN+24, /* systemd: Immediate exit (--user only) */
/* .. one free signal here ... */
#if !defined(__hppa64__) && !defined(__hppa__)
/* Apparently Linux on hppa has fewer RT
* signals (SIGRTMAX is SIGRTMIN+25 there),
* hence let's not try to make use of them
* here. Since these commands are accessible
* by different means and only really a safety
* net, the missing functionality on hppa
* shouldn't matter. */
SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */
SIGRTMIN+27, /* systemd: set log target to console */
SIGRTMIN+28, /* systemd: set log target to kmsg */
SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg (obsolete)*/
/* ... one free signal here SIGRTMIN+30 ... */
#endif
-1);
assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);