From cbbde2ba6c19d6515f09a2ed0955eb2808c91198 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Tue, 12 Jul 2005 11:44:51 +0200 Subject: [PATCH] udevd: set incoming socket buffer SO_RCVBUF to maximum Signed-off-by: Kay Sievers --- udevd.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/udevd.c b/udevd.c index 8782c615..110d8e7c 100644 --- a/udevd.c +++ b/udevd.c @@ -167,7 +167,7 @@ static void msg_queue_insert(struct uevent_msg *msg) } /* forks event and removes event from run queue when finished */ -static void execute_udev(struct uevent_msg *msg) +static void udev_event_fork(struct uevent_msg *msg) { char *const argv[] = { "udev", msg->subsystem, NULL }; pid_t pid; @@ -181,12 +181,10 @@ static void execute_udev(struct uevent_msg *msg) close(uevent_netlink_sock); close(udevd_sock); logging_close(); - setpriority(PRIO_PROCESS, 0, UDEV_PRIORITY); execve(udev_bin, argv, msg->envp); err("exec of child failed"); _exit(1); - break; case -1: err("fork of child failed"); msg_queue_delete(msg); @@ -389,7 +387,7 @@ static void exec_queue_manager(void) if (running_with_devpath(loop_msg, max_childs) == 0) { /* move event to run list */ list_move_tail(&loop_msg->node, &running_list); - execute_udev(loop_msg); + udev_event_fork(loop_msg); running++; dbg("moved seq %llu to running list", loop_msg->seqnum); } else @@ -722,6 +720,7 @@ static void user_sighandler(void) static int init_udevd_socket(void) { struct sockaddr_un saddr; + const int buffersize = 1024 * 1024; socklen_t addrlen; const int feature_on = 1; int retval; @@ -738,6 +737,9 @@ static int init_udevd_socket(void) return -1; } + /* set receive buffersize */ + setsockopt(udevd_sock, SOL_SOCKET, SO_RCVBUF, &buffersize, sizeof(buffersize)); + /* the bind takes care of ensuring only one copy running */ retval = bind(udevd_sock, (struct sockaddr *) &saddr, addrlen); if (retval < 0) { @@ -755,6 +757,7 @@ static int init_udevd_socket(void) static int init_uevent_netlink_sock(void) { struct sockaddr_nl snl; + const int buffersize = 1024 * 1024; int retval; memset(&snl, 0x00, sizeof(struct sockaddr_nl)); @@ -768,6 +771,9 @@ static int init_uevent_netlink_sock(void) return -1; } + /* set receive buffersize */ + setsockopt(uevent_netlink_sock, SOL_SOCKET, SO_RCVBUF, &buffersize, sizeof(buffersize)); + retval = bind(uevent_netlink_sock, (struct sockaddr *) &snl, sizeof(struct sockaddr_nl)); if (retval < 0) { -- 2.39.5