From db992ba3a71f320faab8f90de77ef081305917bb Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Thu, 15 May 2014 17:25:25 -0400 Subject: [PATCH] udev: do not skip the execution of RUN when renaming a network device fails Signed-off-by: Anthony G. Basile --- src/udev/udev-event.c | 31 +++++++++++++++---------------- src/udev/udev.h | 2 +- src/udev/udevadm-test.c | 13 +++++-------- src/udev/udevd.c | 5 ++--- test/test-udev.c | 5 ++--- 5 files changed, 25 insertions(+), 31 deletions(-) diff --git a/src/udev/udev-event.c b/src/udev/udev-event.c index 91c34f626..783c8cf0a 100644 --- a/src/udev/udev-event.c +++ b/src/udev/udev-event.c @@ -835,13 +835,12 @@ static int rename_netif(struct udev_event *event) return rename_netif_dev_fromname_toname(event->dev,udev_device_get_sysname(event->dev),event->name); } -int udev_event_execute_rules(struct udev_event *event, struct udev_rules *rules, const sigset_t *sigmask) +void udev_event_execute_rules(struct udev_event *event, struct udev_rules *rules, const sigset_t *sigmask) { struct udev_device *dev = event->dev; - int err = 0; if (udev_device_get_subsystem(dev) == NULL) - return -1; + return; if (streq(udev_device_get_action(dev), "remove")) { udev_device_read_db(dev, NULL); @@ -889,9 +888,10 @@ int udev_event_execute_rules(struct udev_event *event, struct udev_rules *rules, * the current name IS used AND the target name != the current name */ + int r; if (udev_device_get_ifindex(dev) > 0 && streq(udev_device_get_action(dev), "add") && #ifdef ENABLE_RULE_GENERATOR - (event->name == NULL && (err=udev_rules_assigning_name_to(rules,udev_device_get_sysname(dev))) > 0 || + (event->name == NULL && (r=udev_rules_assigning_name_to(rules,udev_device_get_sysname(dev))) > 0 || event->name != NULL && !streq(event->name, udev_device_get_sysname(dev)))) { #else event->name != NULL && !streq(event->name, udev_device_get_sysname(dev))) { @@ -902,8 +902,8 @@ int udev_event_execute_rules(struct udev_event *event, struct udev_rules *rules, #ifdef ENABLE_RULE_GENERATOR char newifname[IFNAMSIZ]; - /* err is the number of rules that assign a device with NAME= this sysname */ - if (err > 0 || (err=udev_rules_assigning_name_to(rules,udev_device_get_sysname(dev))) > 0) { + /* r is the number of rules that assign a device with NAME= this sysname */ + if (r > 0 || (r=udev_rules_assigning_name_to(rules,udev_device_get_sysname(dev))) > 0) { /* have a conflict, rename to a temp name */ char *newpos; int ifidnum; @@ -917,12 +917,12 @@ int udev_event_execute_rules(struct udev_event *event, struct udev_rules *rules, /* use udev_device_get_ifindex(dev) as it is unique to every iface */ snprintf(pos,IFNAMSIZ+(newifname-pos), "%d", 128 - udev_device_get_ifindex(dev)); - /* note, err > 0, which will skip the post-rename stuff if no rename occurs */ + /* note, r > 0, which will skip the post-rename stuff if no rename occurs */ /* if sysname isn't already the tmpname (ie there is no numeric component), do the rename */ if (!streq(newifname,udev_device_get_sysname(dev))) { - err = rename_netif_dev_fromname_toname(dev,udev_device_get_sysname(dev),newifname); - if (err == 0) { + r = rename_netif_dev_fromname_toname(dev,udev_device_get_sysname(dev),newifname); + if (r == 0) { finalifname = newifname; log_debug("renamed netif to '%s' for collision avoidance\n", newifname); } else { @@ -931,22 +931,22 @@ int udev_event_execute_rules(struct udev_event *event, struct udev_rules *rules, } /* rename it now to its final target if its not already there */ if (event->name != NULL && !streq(event->name, newifname)) { - err = rename_netif_dev_fromname_toname(dev,newifname,event->name); - if (err == 0) + r = rename_netif_dev_fromname_toname(dev,newifname,event->name); + if (r == 0) finalifname = event->name; } } else { /* no need to rename to a tempname first, do a regular direct rename to event->name */ - err = 1; /* skip the post-rename stuff if no rename occurs */ + r = 1; /* skip the post-rename stuff if no rename occurs */ if (!streq(event->name, udev_device_get_sysname(dev))) - err = rename_netif(event); + r = rename_netif(event); } #else - err = rename_netif(event); + r = rename_netif(event); #endif - if (err == 0) { + if (r >= 0) { log_debug("renamed netif to '%s'", finalifname); /* remember old name */ @@ -1009,7 +1009,6 @@ int udev_event_execute_rules(struct udev_event *event, struct udev_rules *rules, udev_device_unref(event->dev_db); event->dev_db = NULL; } - return err; } void udev_event_execute_run(struct udev_event *event, const sigset_t *sigmask) diff --git a/src/udev/udev.h b/src/udev/udev.h index 5e013d4f0..86a9ea680 100644 --- a/src/udev/udev.h +++ b/src/udev/udev.h @@ -84,7 +84,7 @@ int udev_event_apply_subsys_kernel(struct udev_event *event, const char *string, int udev_event_spawn(struct udev_event *event, const char *cmd, char **envp, const sigset_t *sigmask, char *result, size_t ressize); -int udev_event_execute_rules(struct udev_event *event, struct udev_rules *rules, const sigset_t *sigset); +void udev_event_execute_rules(struct udev_event *event, struct udev_rules *rules, const sigset_t *sigset); void udev_event_execute_run(struct udev_event *event, const sigset_t *sigset); int udev_build_argv(struct udev *udev, char *cmd, int *argc, char *argv[]); diff --git a/src/udev/udevadm-test.c b/src/udev/udevadm-test.c index 6cd311b27..6a2f5489f 100644 --- a/src/udev/udevadm-test.c +++ b/src/udev/udevadm-test.c @@ -43,7 +43,6 @@ static int adm_test(struct udev *udev, int argc, char *argv[]) _cleanup_udev_device_unref_ struct udev_device *dev = NULL; _cleanup_udev_event_unref_ struct udev_event *event = NULL; sigset_t mask, sigmask_orig; - int err; int rc = 0, c; static const struct option options[] = { @@ -139,18 +138,16 @@ static int adm_test(struct udev *udev, int argc, char *argv[]) goto out; } - err = udev_event_execute_rules(event, rules, &sigmask_orig); + udev_event_execute_rules(event, rules, &sigmask_orig); udev_list_entry_foreach(entry, udev_device_get_properties_list_entry(dev)) printf("%s=%s\n", udev_list_entry_get_name(entry), udev_list_entry_get_value(entry)); - if (err == 0) { - udev_list_entry_foreach(entry, udev_list_get_entry(&event->run_list)) { - char program[UTIL_PATH_SIZE]; + udev_list_entry_foreach(entry, udev_list_get_entry(&event->run_list)) { + char program[UTIL_PATH_SIZE]; - udev_event_apply_format(event, udev_list_entry_get_name(entry), program, sizeof(program)); - printf("run: '%s'\n", program); - } + udev_event_apply_format(event, udev_list_entry_get_name(entry), program, sizeof(program)); + printf("run: '%s'\n", program); } out: if (event != NULL && event->fd_signal >= 0) diff --git a/src/udev/udevd.c b/src/udev/udevd.c index 0ac6ee091..c51aa1b25 100644 --- a/src/udev/udevd.c +++ b/src/udev/udevd.c @@ -307,10 +307,9 @@ static void worker_new(struct event *event) } /* apply rules, create node, symlinks */ - err = udev_event_execute_rules(udev_event, rules, &sigmask_orig); + udev_event_execute_rules(udev_event, rules, &sigmask_orig); - if (err == 0) - udev_event_execute_run(udev_event, &sigmask_orig); + udev_event_execute_run(udev_event, &sigmask_orig); /* apply/restore inotify watch */ if (err == 0 && udev_event->inotify_watch) { diff --git a/test/test-udev.c b/test/test-udev.c index e28cdae56..1828d54e4 100644 --- a/test/test-udev.c +++ b/test/test-udev.c @@ -165,9 +165,8 @@ int main(int argc, char *argv[]) { } } - err = udev_event_execute_rules(event, rules, &sigmask_orig); - if (err == 0) - udev_event_execute_run(event, NULL); + udev_event_execute_rules(event, rules, &sigmask_orig); + udev_event_execute_run(event, NULL); out: if (event != NULL && event->fd_signal >= 0) close(event->fd_signal);