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-rw-r--r--lib/libalpm/util.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/lib/libalpm/util.c b/lib/libalpm/util.c
index a06f5bfd..eaf85e93 100644
--- a/lib/libalpm/util.c
+++ b/lib/libalpm/util.c
@@ -548,6 +548,25 @@ static int _alpm_chroot_read_from_child(alpm_handle_t *handle, int fd,
return 0;
}
+static void _alpm_reset_signals(void)
+{
+ /* reset POSIX defined signals (see signal.h) */
+ /* there are likely more but there is no easy way
+ * to get the full list of valid signals */
+ int *i, signals[] = {
+ SIGABRT, SIGALRM, SIGBUS, SIGCHLD, SIGCONT, SIGFPE, SIGHUP, SIGILL,
+ SIGINT, SIGKILL, SIGPIPE, SIGQUIT, SIGSEGV, SIGSTOP, SIGTERM, SIGTSTP,
+ SIGTTIN, SIGTTOU, SIGUSR1, SIGUSR2, SIGPOLL, SIGPROF, SIGSYS, SIGTRAP,
+ SIGURG, SIGVTALRM, SIGXCPU, SIGXFSZ,
+ 0
+ };
+ struct sigaction def;
+ def.sa_handler = SIG_DFL;
+ for(i = signals; *i; i++) {
+ sigaction(*i, &def, NULL);
+ }
+}
+
/** Execute a command with arguments in a chroot.
* @param handle the context handle
* @param cmd command to execute
@@ -633,6 +652,7 @@ int _alpm_run_chroot(alpm_handle_t *handle, const char *cmd, char *const argv[],
exit(1);
}
umask(0022);
+ _alpm_reset_signals();
execv(cmd, argv);
/* execv only returns if there was an error */
fprintf(stderr, _("call to execv failed (%s)\n"), strerror(errno));