From 53318514cce4c129c9e8c97a5fba8ddbd09f1bb5 Mon Sep 17 00:00:00 2001 From: Tom Gundersen Date: Wed, 10 Jun 2015 15:20:02 +0200 Subject: [PATCH] udevd: event - don't log about failures of spawn processes when this is expected PROGRAM and IMPORT{program} uses the exit code of the spawn process to decide if a rule matches or not, a failing process is hence normal operation and not something we should warn about. We still warn about other types of failing processes. --- src/udev/udev-event.c | 25 +++++++++++++++---------- src/udev/udev-rules.c | 4 ++-- src/udev/udev.h | 1 + 3 files changed, 18 insertions(+), 12 deletions(-) diff --git a/src/udev/udev-event.c b/src/udev/udev-event.c index 8d17c5e1e39..cc97a8867e6 100644 --- a/src/udev/udev-event.c +++ b/src/udev/udev-event.c @@ -42,6 +42,7 @@ typedef struct Spawn { pid_t pid; usec_t timeout_warn; usec_t timeout; + bool accept_failure; } Spawn; struct udev_event *udev_event_new(struct udev_device *dev) { @@ -583,23 +584,24 @@ static int on_spawn_sigchld(sd_event_source *s, const siginfo_t *si, void *userd switch (si->si_code) { case CLD_EXITED: - if (si->si_status != 0) - log_warning("process '%s' failed with exit code %i.", spawn->cmd, si->si_status); - else { - log_debug("process '%s' succeeded.", spawn->cmd); + if (si->si_status == 0) { + log_debug("Process '%s' succeeded.", spawn->cmd); sd_event_exit(sd_event_source_get_event(s), 0); return 1; - } + } else if (spawn->accept_failure) + log_debug("Process '%s' failed with exit code %i.", spawn->cmd, si->si_status); + else + log_warning("Process '%s' failed with exit code %i.", spawn->cmd, si->si_status); break; case CLD_KILLED: case CLD_DUMPED: - log_warning("process '%s' terminated by signal %s.", spawn->cmd, signal_to_string(si->si_status)); + log_warning("Process '%s' terminated by signal %s.", spawn->cmd, signal_to_string(si->si_status)); break; default: - log_error("process '%s' failed due to unknown reason.", spawn->cmd); + log_error("Process '%s' failed due to unknown reason.", spawn->cmd); } sd_event_exit(sd_event_source_get_event(s), -EIO); @@ -610,10 +612,12 @@ static int on_spawn_sigchld(sd_event_source *s, const siginfo_t *si, void *userd static int spawn_wait(struct udev_event *event, usec_t timeout_usec, usec_t timeout_warn_usec, - const char *cmd, pid_t pid) { + const char *cmd, pid_t pid, + bool accept_failure) { Spawn spawn = { .cmd = cmd, .pid = pid, + .accept_failure = accept_failure, }; _cleanup_event_unref_ sd_event *e = NULL; int r, ret; @@ -698,6 +702,7 @@ out: int udev_event_spawn(struct udev_event *event, usec_t timeout_usec, usec_t timeout_warn_usec, + bool accept_failure, const char *cmd, char **envp, char *result, size_t ressize) { int outpipe[2] = {-1, -1}; @@ -773,7 +778,7 @@ int udev_event_spawn(struct udev_event *event, outpipe[READ_END], errpipe[READ_END], result, ressize); - err = spawn_wait(event, timeout_usec, timeout_warn_usec, cmd, pid); + err = spawn_wait(event, timeout_usec, timeout_warn_usec, cmd, pid, accept_failure); } out: @@ -930,7 +935,7 @@ void udev_event_execute_run(struct udev_event *event, usec_t timeout_usec, usec_ udev_event_apply_format(event, cmd, program, sizeof(program)); envp = udev_device_get_properties_envp(event->dev); - udev_event_spawn(event, timeout_usec, timeout_warn_usec, program, envp, NULL, 0); + udev_event_spawn(event, timeout_usec, timeout_warn_usec, false, program, envp, NULL, 0); } } } diff --git a/src/udev/udev-rules.c b/src/udev/udev-rules.c index 7be9a2311ab..8ebc061eb17 100644 --- a/src/udev/udev-rules.c +++ b/src/udev/udev-rules.c @@ -641,7 +641,7 @@ static int import_program_into_properties(struct udev_event *event, int err; envp = udev_device_get_properties_envp(dev); - err = udev_event_spawn(event, timeout_usec, timeout_warn_usec, program, envp, result, sizeof(result)); + err = udev_event_spawn(event, timeout_usec, timeout_warn_usec, true, program, envp, result, sizeof(result)); if (err < 0) return err; @@ -2131,7 +2131,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); - if (udev_event_spawn(event, timeout_usec, timeout_warn_usec, program, envp, result, sizeof(result)) < 0) { + if (udev_event_spawn(event, timeout_usec, timeout_warn_usec, true, program, envp, result, sizeof(result)) < 0) { if (cur->key.op != OP_NOMATCH) goto nomatch; } else { diff --git a/src/udev/udev.h b/src/udev/udev.h index fd8504c424d..4d22f2377e1 100644 --- a/src/udev/udev.h +++ b/src/udev/udev.h @@ -84,6 +84,7 @@ int udev_event_apply_subsys_kernel(struct udev_event *event, const char *string, int udev_event_spawn(struct udev_event *event, usec_t timeout_usec, usec_t timeout_warn_usec, + bool accept_failure, const char *cmd, char **envp, char *result, size_t ressize); void udev_event_execute_rules(struct udev_event *event,