diff options
| -rw-r--r-- | src/core/manager.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/src/core/manager.c b/src/core/manager.c index 43e231c328..512b6dc158 100644 --- a/src/core/manager.c +++ b/src/core/manager.c @@ -1657,13 +1657,12 @@ static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, ui return 0; } -static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, const char *buf, size_t n, FDSet *fds) { +static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, const char *buf, FDSet *fds) { _cleanup_strv_free_ char **tags = NULL; assert(m); assert(u); assert(buf); - assert(n > 0); tags = strv_split(buf, "\n\r"); if (!tags) { @@ -1721,10 +1720,6 @@ static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t return -errno; } - if (n == 0) { - log_debug("Got zero-length notification message. Ignoring."); - return 0; - } CMSG_FOREACH(cmsg, &msghdr) { if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { @@ -1760,25 +1755,27 @@ static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t return 0; } + /* The message should be a string. Here we make sure it's NUL-terminated, + * but only the part until first NUL will be used anyway. */ buf[n] = 0; /* Notify every unit that might be interested, but try * to avoid notifying the same one multiple times. */ u1 = manager_get_unit_by_pid_cgroup(m, ucred->pid); if (u1) { - manager_invoke_notify_message(m, u1, ucred->pid, buf, n, fds); + manager_invoke_notify_message(m, u1, ucred->pid, buf, fds); found = true; } u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(ucred->pid)); if (u2 && u2 != u1) { - manager_invoke_notify_message(m, u2, ucred->pid, buf, n, fds); + manager_invoke_notify_message(m, u2, ucred->pid, buf, fds); found = true; } u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(ucred->pid)); if (u3 && u3 != u2 && u3 != u1) { - manager_invoke_notify_message(m, u3, ucred->pid, buf, n, fds); + manager_invoke_notify_message(m, u3, ucred->pid, buf, fds); found = true; } |