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-rw-r--r--src/librc/librc.c34
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);