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authorRoy Marples <roy@marples.name>2007-04-11 13:18:33 +0000
committerRoy Marples <roy@marples.name>2007-04-11 13:18:33 +0000
commit378dcbd5d580b197dbcd4f1c2fc84bf41c28e032 (patch)
treeb981cf297a7e709266d31ffad218984870641961 /signals.c
parent96ccff7a0659090f6c4121fe6892a1f37668bafa (diff)
downloaddhcpcd-378dcbd5d580b197dbcd4f1c2fc84bf41c28e032.tar.xz
Cuddle up to LKML style C
Diffstat (limited to 'signals.c')
-rw-r--r--signals.c67
1 files changed, 33 insertions, 34 deletions
diff --git a/signals.c b/signals.c
index 3020d0f3..8a77bd8c 100644
--- a/signals.c
+++ b/signals.c
@@ -36,39 +36,38 @@ static int signal_pipe[2];
static void signal_handler (int sig)
{
- /* Silently ignore this signal and wait for it. This stops zombies.
- We do this here instead of client.c so that we don't spam the log file
- with "waiting on select messages" */
- if (sig == SIGCHLD)
- {
- wait (0);
- return;
- }
+ /* Silently ignore this signal and wait for it. This stops zombies.
+ We do this here instead of client.c so that we don't spam the log file
+ with "waiting on select messages" */
+ if (sig == SIGCHLD) {
+ wait (0);
+ return;
+ }
- if (send (signal_pipe[1], &sig, sizeof (sig), MSG_DONTWAIT) < 0)
- logger (LOG_ERR, "Could not send signal: %s", strerror (errno));
+ if (send (signal_pipe[1], &sig, sizeof (sig), MSG_DONTWAIT) < 0)
+ logger (LOG_ERR, "Could not send signal: %s", strerror (errno));
}
/* Call this before doing anything else. Sets up the socket pair
* and installs the signal handler */
void signal_setup(void)
{
- int i;
- int flags;
+ int i;
+ int flags;
- socketpair (AF_UNIX, SOCK_STREAM, 0, signal_pipe);
+ socketpair (AF_UNIX, SOCK_STREAM, 0, signal_pipe);
- /* Stop any scripts from inheriting us */
- for (i = 0; i < 2; i++)
- if ((flags = fcntl (signal_pipe[i], F_GETFD, 0)) < 0 ||
- fcntl (signal_pipe[i], F_SETFD, flags | FD_CLOEXEC) < 0)
- logger (LOG_ERR ,"fcntl: %s", strerror (errno));
+ /* Stop any scripts from inheriting us */
+ for (i = 0; i < 2; i++)
+ if ((flags = fcntl (signal_pipe[i], F_GETFD, 0)) < 0 ||
+ fcntl (signal_pipe[i], F_SETFD, flags | FD_CLOEXEC) < 0)
+ logger (LOG_ERR ,"fcntl: %s", strerror (errno));
- signal (SIGHUP, signal_handler);
- signal (SIGALRM, signal_handler);
- signal (SIGTERM, signal_handler);
- signal (SIGINT, signal_handler);
- signal (SIGCHLD, signal_handler);
+ signal (SIGHUP, signal_handler);
+ signal (SIGALRM, signal_handler);
+ signal (SIGTERM, signal_handler);
+ signal (SIGINT, signal_handler);
+ signal (SIGCHLD, signal_handler);
}
/* Quick little function to setup the rfds. Will return the
@@ -76,11 +75,11 @@ void signal_setup(void)
* one extra fd */
int signal_fd_set (fd_set *rfds, int extra_fd)
{
- FD_ZERO (rfds);
- FD_SET (signal_pipe[0], rfds);
- if (extra_fd >= 0)
- FD_SET (extra_fd, rfds);
- return signal_pipe[0] > extra_fd ? signal_pipe[0] : extra_fd;
+ FD_ZERO (rfds);
+ FD_SET (signal_pipe[0], rfds);
+ if (extra_fd >= 0)
+ FD_SET (extra_fd, rfds);
+ return signal_pipe[0] > extra_fd ? signal_pipe[0] : extra_fd;
}
/* Read a signal from the signal pipe. Returns 0 if there is
@@ -88,14 +87,14 @@ int signal_fd_set (fd_set *rfds, int extra_fd)
* your signal on success */
int signal_read (const fd_set *rfds)
{
- int sig;
+ int sig;
- if (! FD_ISSET (signal_pipe[0], rfds))
- return 0;
+ if (! FD_ISSET (signal_pipe[0], rfds))
+ return 0;
- if (read (signal_pipe[0], &sig, sizeof (sig)) < 0)
- return -1;
+ if (read (signal_pipe[0], &sig, sizeof (sig)) < 0)
+ return -1;
- return sig;
+ return sig;
}