136 lines
5.3 KiB
Diff
136 lines
5.3 KiB
Diff
---
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src/udev/udev-event.c | 42 ++++++++++++++++++++++++++++++++++++++++++
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src/udev/udev.h | 1 +
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src/udev/udevd.c | 23 +++++++++++++++++++++--
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3 files changed, 64 insertions(+), 2 deletions(-)
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--- src/udev/udev-event.c
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+++ src/udev/udev-event.c 2014-09-24 14:32:53.115639820 +0000
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@@ -959,6 +959,46 @@ void udev_event_execute_rules(struct ude
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}
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}
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+#ifdef HAVE_KMOD
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+static inline void udev_check_and_set_kmod(enum udev_builtin_cmd builtin_cmd, struct udev_event *event) {
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+ char filename[UTIL_PATH_SIZE];
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+ switch (builtin_cmd) {
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+ case UDEV_BUILTIN_KMOD:
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+ snprintf(filename, sizeof(filename), "/run/udev/kmod/%u", (unsigned)getpid());
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+ touch(filename);
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+ default:
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+ break;
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+ }
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+}
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+
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+static inline void udev_check_and_unset_kmod(enum udev_builtin_cmd builtin_cmd, struct udev_event *event) {
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+ char filename[UTIL_PATH_SIZE];
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+ switch (builtin_cmd) {
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+ case UDEV_BUILTIN_KMOD:
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+ snprintf(filename, sizeof(filename), "/run/udev/kmod/%u", (unsigned)getpid());
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+ unlink(filename);
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+ default:
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+ break;
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+ }
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+}
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+
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+bool udev_check_for_kmod(pid_t pid) {
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+ char filename[UTIL_PATH_SIZE];
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+ struct stat st;
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+ snprintf(filename, sizeof(filename), "/run/udev/kmod/%u", (unsigned)pid);
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+ if (stat(filename, &st) == 0) {
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+ return true;
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+ }
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+ return false;
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+}
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+#else
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+# define udev_set_kmod (a,b)
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+# define udev_unset_kmod(a,b)
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+bool udev_check_for_kmod(pid_t pid) {
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+ return false;
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+}
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+#endif
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+
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void udev_event_execute_run(struct udev_event *event, usec_t timeout_usec, usec_t timeout_warn_usec, const sigset_t *sigmask) {
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struct udev_list_entry *list_entry;
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@@ -970,7 +1010,9 @@ void udev_event_execute_run(struct udev_
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char command[UTIL_PATH_SIZE];
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udev_event_apply_format(event, cmd, command, sizeof(command));
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+ udev_check_and_set_kmod(builtin_cmd, event);
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udev_builtin_run(event->dev, builtin_cmd, command, false);
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+ udev_check_and_unset_kmod(builtin_cmd, event);
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} else {
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char program[UTIL_PATH_SIZE];
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char **envp;
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--- src/udev/udevd.c
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+++ src/udev/udevd.c 2014-09-24 15:02:30.895592379 +0000
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@@ -76,6 +76,7 @@ static int children_max;
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static int exec_delay;
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static usec_t event_timeout_usec = 180 * USEC_PER_SEC;
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static usec_t event_timeout_warn_usec = 180 * USEC_PER_SEC / 3;
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+static bool event_killkmod = false;
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static sigset_t sigmask_orig;
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static UDEV_LIST(event_list);
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static UDEV_LIST(worker_list);
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@@ -1017,6 +1018,12 @@ static void kernel_cmdline_options(struc
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}
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event_timeout_usec *= USEC_PER_SEC;
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event_timeout_warn_usec = (event_timeout_usec / 3) ? : 1;
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+ } else if (startswith(opt, "udev.killkmod=")) {
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+ r = parse_boolean(opt + 14);
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+ if (r < 0)
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+ log_warning("Invalid udev.killkmod Ignoring: %s", opt + 14);
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+ else
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+ event_killkmod = r;
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}
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free(s);
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@@ -1065,7 +1072,7 @@ int main(int argc, char *argv[]) {
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}
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for (;;) {
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- int option, r;
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+ int option;
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option = getopt_long(argc, argv, "c:de:DtN:hV", options, NULL);
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if (option == -1)
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@@ -1356,6 +1363,12 @@ int main(int argc, char *argv[]) {
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udev_list_node_init(&event_list);
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udev_list_node_init(&worker_list);
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+ r = mkdir_p("/run/udev/kmod", 0755);
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+ if (r < 0 && errno != EEXIST) {
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+ log_error("could not create /run/udev/kmod: %m");
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+ goto exit;
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+ }
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+
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for (;;) {
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static usec_t last_usec;
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struct epoll_event ev[8];
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@@ -1440,7 +1453,13 @@ int main(int argc, char *argv[]) {
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if (worker->state != WORKER_RUNNING)
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continue;
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-
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+#ifdef HAVE_KMOD
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+ if (udev_check_for_kmod(worker->pid)) {
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+ log_debug("worker [%u] %s is using kmod", worker->pid, worker->event->devpath);
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+ if (!event_killkmod)
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+ continue;
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+ }
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+#endif
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ts = now(CLOCK_MONOTONIC);
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if ((ts - worker->event_start_usec) > event_timeout_warn_usec) {
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--- src/udev/udev.h
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+++ src/udev/udev.h 2014-09-24 14:33:33.824008084 +0000
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@@ -88,6 +88,7 @@ int udev_event_spawn(struct udev_event *
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char *result, size_t ressize);
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void udev_event_execute_rules(struct udev_event *event, usec_t timeout_usec, usec_t timeout_warn_usec,
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struct udev_rules *rules, const sigset_t *sigset);
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+bool udev_check_for_kmod(pid_t pid);
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void udev_event_execute_run(struct udev_event *event, usec_t timeout_usec, usec_t timeout_warn_usec, const sigset_t *sigset);
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int udev_build_argv(struct udev *udev, char *cmd, int *argc, char *argv[]);
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