diff options
Diffstat (limited to 'src/librc/librc.c')
| -rw-r--r-- | src/librc/librc.c | 34 |
1 files changed, 25 insertions, 9 deletions
diff --git a/src/librc/librc.c b/src/librc/librc.c index 669c27f5..3e6a1a9a 100644 --- a/src/librc/librc.c +++ b/src/librc/librc.c @@ -41,6 +41,23 @@ const char librc_copyright[] = "Copyright (c) 2007-2008 Roy Marples"; # define S_IXUGO (S_IXUSR | S_IXGRP | S_IXOTH) #endif +/* Some platforms don't expose SYS_sigaction and friends. + * So we hope that their libc does the Right Thing. */ +#ifdef SYS_sigaction +# define do_sigaction(_sig, _new, _old) \ + syscall (SYS_sigaction, _sig, _new, _old); +#else +#define do_sigaction(_sig, _new, _old) \ + sigaction (_sig, _new, _old) +#endif +#ifdef SYS_sigprocmask +# define do_sigprocmask(_sig, _new, _old) \ + syscall (SYS_sigprocmask, _sig, _new, _old); +#else +#define do_sigprocmask(_sig, _new, _old) \ + sigprocmask (_sig, _new, _old) +#endif + /* File stream used for plugins to write environ vars to */ FILE *rc_environ_fd = NULL; @@ -606,19 +623,18 @@ static pid_t _exec_service (const char *service, const char *arg) sigemptyset (&empty); sigfillset (&full); sigprocmask (SIG_SETMASK, &full, &old); - if ((pid = vfork ()) == 0) { /* Restore default handlers */ - syscall (SYS_sigaction, SIGCHLD, &sa, NULL); - syscall (SYS_sigaction, SIGHUP, &sa, NULL); - syscall (SYS_sigaction, SIGINT, &sa, NULL); - syscall (SYS_sigaction, SIGQUIT, &sa, NULL); - syscall (SYS_sigaction, SIGTERM, &sa, NULL); - syscall (SYS_sigaction, SIGUSR1, &sa, NULL); - syscall (SYS_sigaction, SIGWINCH, &sa, NULL); + do_sigaction (SIGCHLD, &sa, NULL); + do_sigaction (SIGHUP, &sa, NULL); + do_sigaction (SIGINT, &sa, NULL); + do_sigaction (SIGQUIT, &sa, NULL); + do_sigaction (SIGTERM, &sa, NULL); + do_sigaction (SIGUSR1, &sa, NULL); + do_sigaction (SIGWINCH, &sa, NULL); /* Unmask signals */ - syscall (SYS_sigprocmask, SIG_SETMASK, &empty, NULL); + do_sigprocmask (SIG_SETMASK, &empty, NULL); /* Safe to run now */ execl (file, file, arg, (char *) NULL); |