diff options
author | Kay Sievers <kay.sievers@suse.de> | 2005-11-04 05:25:15 +0100 |
---|---|---|
committer | Kay Sievers <kay.sievers@suse.de> | 2005-11-04 05:25:15 +0100 |
commit | 833b3c680b23dab87ba4918f25fbd5775dfd9ba8 (patch) | |
tree | 937f1ee2a27d34d6e2c894060b6eb87fe36dab01 /udevd.c | |
parent | ce364175b275834077b97fa79e1969e736b6e551 (diff) |
udevd: don't daemonize before initialization
Move socket init and rule parsing before forking, so we can start
emitting event immediately after udevd has started.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Diffstat (limited to 'udevd.c')
-rw-r--r-- | udevd.c | 80 |
1 files changed, 42 insertions, 38 deletions
@@ -211,11 +211,10 @@ static void udev_event_run(struct uevent_msg *msg) switch (pid) { case 0: /* child */ - if (uevent_netlink_sock > 0) - close(uevent_netlink_sock); + close(uevent_netlink_sock); + close(udevd_sock); if (inotify_fd > 0) close(inotify_fd); - close(udevd_sock); close(signal_pipe[READ_END]); close(signal_pipe[WRITE_END]); logging_close(); @@ -773,7 +772,6 @@ static int init_udevd_socket(void) retval = bind(udevd_sock, (struct sockaddr *) &saddr, addrlen); if (retval < 0) { err("bind failed, %s", strerror(errno)); - close(udevd_sock); return -1; } @@ -803,15 +801,13 @@ static int init_uevent_netlink_sock(void) /* set receive buffersize */ setsockopt(uevent_netlink_sock, SOL_SOCKET, SO_RCVBUFFORCE, &buffersize, sizeof(buffersize)); - retval = bind(uevent_netlink_sock, (struct sockaddr *) &snl, - sizeof(struct sockaddr_nl)); + retval = bind(uevent_netlink_sock, (struct sockaddr *) &snl, sizeof(struct sockaddr_nl)); if (retval < 0) { err("bind failed, %s", strerror(errno)); close(uevent_netlink_sock); uevent_netlink_sock = -1; return -1; } - return 0; } @@ -825,10 +821,11 @@ int main(int argc, char *argv[], char *envp[]) int uevent_netlink_active = 0; int daemonize = 0; int i; + int rc = 0; - /* set std fd's to /dev/null, if the kernel forks us, we don't have them at all */ + /* redirect std fd's, if the kernel forks us, we don't have them at all */ devnull = open("/dev/null", O_RDWR); - if (devnull >= 0) { + if (devnull >= 0) { if (devnull != STDIN_FILENO) dup2(devnull, STDIN_FILENO); if (devnull != STDOUT_FILENO) @@ -851,6 +848,7 @@ int main(int argc, char *argv[], char *envp[]) goto exit; } + /* parse commandline options */ for (i = 1 ; i < argc; i++) { char *arg = argv[i]; if (strcmp(arg, "--daemon") == 0 || strcmp(arg, "-d") == 0) { @@ -863,30 +861,52 @@ int main(int argc, char *argv[], char *envp[]) } } + /* init sockets to receive events */ + if (init_udevd_socket() < 0) { + if (errno == EADDRINUSE) { + dbg("another udevd running, exit"); + rc = 1; + } else { + dbg("error initializing udevd socket: %s", strerror(errno)); + rc = 2; + } + goto exit; + } + + if (init_uevent_netlink_sock() < 0) { + err("uevent socket not available"); + rc = 3; + goto exit; + } + + /* parse the rules and keep it in memory */ + udev_rules_init(&rules, 0, 1); + if (daemonize) { pid_t pid; pid = fork(); switch (pid) { case 0: - dbg("damonized fork running"); + dbg("daemonized fork running"); + + /* become session leader */ + sid = setsid(); + dbg("our session is %d", sid); + + chdir("/"); + umask(umask(077) | 022); break; case -1: err("fork of daemon failed"); + rc = 4; goto exit; default: - logging_close(); - exit(0); + dbg("child [%u] running, parent exits", pid); + goto exit; } } - /* become session leader */ - sid = setsid(); - dbg("our session is %d", sid); - - chdir("/"); - umask(umask(077) | 022); - /* set a reasonable scheduling priority for the daemon */ setpriority(PRIO_PROCESS, 0, UDEVD_PRIORITY); @@ -918,21 +938,6 @@ int main(int argc, char *argv[], char *envp[]) sigaction(SIGCHLD, &act, NULL); sigaction(SIGHUP, &act, NULL); - /* parse the rules and keep it in memory */ - udev_rules_init(&rules, 0, 1); - - if (init_udevd_socket() < 0) { - if (errno == EADDRINUSE) - dbg("another udevd running, exit"); - else - dbg("error initializing udevd socket: %s", strerror(errno)); - - goto exit; - } - - if (init_uevent_netlink_sock() < 0) - err("uevent socket not available"); - /* watch rules directory */ inotify_fd = inotify_init(); if (inotify_fd > 0) @@ -983,8 +988,7 @@ int main(int argc, char *argv[], char *envp[]) FD_ZERO(&readfds); FD_SET(signal_pipe[READ_END], &readfds); FD_SET(udevd_sock, &readfds); - if (uevent_netlink_sock > 0) - FD_SET(uevent_netlink_sock, &readfds); + FD_SET(uevent_netlink_sock, &readfds); if (inotify_fd > 0) FD_SET(inotify_fd, &readfds); @@ -1009,7 +1013,7 @@ int main(int argc, char *argv[], char *envp[]) } /* get kernel netlink message */ - if ((uevent_netlink_sock > 0) && FD_ISSET(uevent_netlink_sock, &readfds)) { + if (FD_ISSET(uevent_netlink_sock, &readfds)) { msg = get_netlink_msg(); if (msg) { msg_queue_insert(msg); @@ -1096,5 +1100,5 @@ exit: logging_close(); - return 0; + return rc; } |