X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fcore%2Fmanager.c;h=79a9d549542b970157197cd50a31974baa60d918;hp=7653850cd4273296470398cea5775c8490b5c096;hb=5bd4b173605142c7be493aa4d958ebaef21f421d;hpb=ee33e53a70c0d3f9d8aeafe4b8fd84a0d5e1d8d9
diff --git a/src/core/manager.c b/src/core/manager.c
index 7653850cd..79a9d5495 100644
--- a/src/core/manager.c
+++ b/src/core/manager.c
@@ -19,7 +19,6 @@
along with systemd; If not, see .
***/
-#include
#include
#include
#include
@@ -27,14 +26,10 @@
#include
#include
#include
-#include
#include
#include
#include
-#include
#include
-#include
-#include
#include
#include
@@ -43,7 +38,6 @@
#endif
#include "sd-daemon.h"
-#include "sd-id128.h"
#include "sd-messages.h"
#include "manager.h"
@@ -56,7 +50,6 @@
#include "mkdir.h"
#include "ratelimit.h"
#include "locale-setup.h"
-#include "mount-setup.h"
#include "unit-name.h"
#include "missing.h"
#include "path-lookup.h"
@@ -64,7 +57,6 @@
#include "exit-status.h"
#include "virt.h"
#include "watchdog.h"
-#include "cgroup-util.h"
#include "path-util.h"
#include "audit-fd.h"
#include "boot-timestamps.h"
@@ -90,6 +82,8 @@ static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint
static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata);
static int manager_dispatch_run_queue(sd_event_source *source, void *userdata);
+static int manager_run_generators(Manager *m);
+static void manager_undo_generators(Manager *m);
static int manager_watch_jobs_in_progress(Manager *m) {
usec_t next;
@@ -162,6 +156,7 @@ static void manager_print_jobs_in_progress(Manager *m) {
uint64_t x;
assert(m);
+ assert(m->n_running_jobs > 0);
manager_flip_auto_status(m, true);
@@ -184,8 +179,7 @@ static void manager_print_jobs_in_progress(Manager *m) {
m->jobs_in_progress_iteration++;
if (m->n_running_jobs > 1)
- if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0)
- job_of_n = NULL;
+ asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs);
format_timespan(time, sizeof(time), now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC);
if (job_get_timeout(j, &x) > 0)
@@ -197,7 +191,6 @@ static void manager_print_jobs_in_progress(Manager *m) {
job_type_to_string(j->type),
unit_description(j->unit),
time, limit);
-
}
static int have_ask_password(void) {
@@ -548,6 +541,9 @@ int manager_new(SystemdRunningAs running_as, bool test_run, Manager **_m) {
m->test_run = test_run;
+ /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */
+ RATELIMIT_INIT(m->ctrl_alt_del_ratelimit, 2 * USEC_PER_SEC, 7);
+
r = manager_default_environment(m);
if (r < 0)
goto fail;
@@ -704,7 +700,7 @@ static int manager_setup_kdbus(Manager *m) {
if (m->test_run || m->kdbus_fd >= 0)
return 0;
- if (getpid() == 1)
+ if (m->running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0)
bus_kernel_fix_attach_mask();
m->kdbus_fd = bus_kernel_create_bus(
@@ -946,20 +942,29 @@ Manager* manager_free(Manager *m) {
}
int manager_enumerate(Manager *m) {
- int r = 0, q;
+ int r = 0;
UnitType c;
assert(m);
/* Let's ask every type to load all units from disk/kernel
* that it might know */
- for (c = 0; c < _UNIT_TYPE_MAX; c++)
- if (unit_vtable[c]->enumerate) {
- q = unit_vtable[c]->enumerate(m);
- if (q < 0)
- r = q;
+ for (c = 0; c < _UNIT_TYPE_MAX; c++) {
+ int q;
+
+ if (unit_vtable[c]->supported && !unit_vtable[c]->supported(m)) {
+ log_info("Unit type .%s is not supported on this system.", unit_type_to_string(c));
+ continue;
}
+ if (!unit_vtable[c]->enumerate)
+ continue;
+
+ q = unit_vtable[c]->enumerate(m);
+ if (q < 0)
+ r = q;
+ }
+
manager_dispatch_load_queue(m);
return r;
}
@@ -1019,7 +1024,7 @@ static void manager_build_unit_path_cache(Manager *m) {
while ((de = readdir(d))) {
char *p;
- if (ignore_file(de->d_name))
+ if (hidden_file(de->d_name))
continue;
p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL);
@@ -1075,8 +1080,10 @@ int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
assert(m);
dual_timestamp_get(&m->generators_start_timestamp);
- manager_run_generators(m);
+ r = manager_run_generators(m);
dual_timestamp_get(&m->generators_finish_timestamp);
+ if (r < 0)
+ return r;
r = lookup_paths_init(
&m->lookup_paths, m->running_as, true,
@@ -1441,7 +1448,7 @@ static unsigned manager_dispatch_dbus_queue(Manager *m) {
return n;
}
-static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, char *buf, size_t n) {
+static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, char *buf, size_t n, FDSet *fds) {
_cleanup_strv_free_ char **tags = NULL;
assert(m);
@@ -1458,12 +1465,13 @@ static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, char *
log_unit_debug(u->id, "Got notification message for unit %s", u->id);
if (UNIT_VTABLE(u)->notify_message)
- UNIT_VTABLE(u)->notify_message(u, pid, tags);
+ UNIT_VTABLE(u)->notify_message(u, pid, tags, fds);
}
static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
Manager *m = userdata;
ssize_t n;
+ int r;
assert(m);
assert(m->notify_fd == fd);
@@ -1474,73 +1482,99 @@ static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t
}
for (;;) {
- char buf[4096];
+ _cleanup_fdset_free_ FDSet *fds = NULL;
+ char buf[NOTIFY_BUFFER_MAX+1];
struct iovec iovec = {
.iov_base = buf,
.iov_len = sizeof(buf)-1,
};
- bool found = false;
-
union {
struct cmsghdr cmsghdr;
- uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];
+ uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) +
+ CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)];
} control = {};
-
struct msghdr msghdr = {
.msg_iov = &iovec,
.msg_iovlen = 1,
.msg_control = &control,
.msg_controllen = sizeof(control),
};
- struct ucred *ucred;
+ struct cmsghdr *cmsg;
+ struct ucred *ucred = NULL;
+ bool found = false;
Unit *u1, *u2, *u3;
+ int *fd_array = NULL;
+ unsigned n_fds = 0;
- n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT);
- if (n <= 0) {
- if (n == 0)
- return -EIO;
-
+ n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC);
+ if (n < 0) {
if (errno == EAGAIN || errno == EINTR)
break;
return -errno;
}
- if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) ||
- control.cmsghdr.cmsg_level != SOL_SOCKET ||
- control.cmsghdr.cmsg_type != SCM_CREDENTIALS ||
- control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) {
- log_warning("Received notify message without credentials. Ignoring.");
+ for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg; cmsg = CMSG_NXTHDR(&msghdr, cmsg)) {
+ if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
+
+ fd_array = (int*) CMSG_DATA(cmsg);
+ n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
+
+ } else if (cmsg->cmsg_level == SOL_SOCKET &&
+ cmsg->cmsg_type == SCM_CREDENTIALS &&
+ cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) {
+
+ ucred = (struct ucred*) CMSG_DATA(cmsg);
+ }
+ }
+
+ if (n_fds > 0) {
+ assert(fd_array);
+
+ r = fdset_new_array(&fds, fd_array, n_fds);
+ if (r < 0) {
+ close_many(fd_array, n_fds);
+ return log_oom();
+ }
+ }
+
+ if (!ucred || ucred->pid <= 0) {
+ log_warning("Received notify message without valid credentials. Ignoring.");
continue;
}
- ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr);
+ if ((size_t) n >= sizeof(buf)) {
+ log_warning("Received notify message exceeded maximum size. Ignoring.");
+ continue;
+ }
- assert((size_t) n < sizeof(buf));
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(m, ucred->pid);
if (u1) {
- manager_invoke_notify_message(m, u1, ucred->pid, buf, n);
+ manager_invoke_notify_message(m, u1, ucred->pid, buf, n, fds);
found = true;
}
u2 = hashmap_get(m->watch_pids1, LONG_TO_PTR(ucred->pid));
if (u2 && u2 != u1) {
- manager_invoke_notify_message(m, u2, ucred->pid, buf, n);
+ manager_invoke_notify_message(m, u2, ucred->pid, buf, n, fds);
found = true;
}
u3 = hashmap_get(m->watch_pids2, LONG_TO_PTR(ucred->pid));
if (u3 && u3 != u2 && u3 != u1) {
- manager_invoke_notify_message(m, u3, ucred->pid, buf, n);
+ manager_invoke_notify_message(m, u3, ucred->pid, buf, n, fds);
found = true;
}
if (!found)
log_warning("Cannot find unit for notify message of PID "PID_FMT".", ucred->pid);
+
+ if (fdset_size(fds) > 0)
+ log_warning("Got auxiliary fds with notification message, closing all.");
}
return 0;
@@ -1682,7 +1716,19 @@ static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t
case SIGINT:
if (m->running_as == SYSTEMD_SYSTEM) {
- manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
+
+ /* If the user presses C-A-D more than
+ * 7 times within 2s, we reboot
+ * immediately. */
+
+ if (ratelimit_test(&m->ctrl_alt_del_ratelimit))
+ manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
+ else {
+ log_notice("Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
+ status_printf(NULL, true, false, "Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
+ m->exit_code = MANAGER_REBOOT;
+ }
+
break;
}
@@ -2052,8 +2098,7 @@ void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
return;
}
- msg = strappenda("unit=", p);
-
+ msg = strjoina("unit=", p);
if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) {
if (errno == EPERM)
/* We aren't allowed to send audit messages?
@@ -2171,7 +2216,7 @@ int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) {
m->n_reloading ++;
- fprintf(f, "current-job-id=%i\n", m->current_job_id);
+ fprintf(f, "current-job-id=%"PRIu32"\n", m->current_job_id);
fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr));
fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs);
fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs);
@@ -2477,7 +2522,9 @@ int manager_reload(Manager *m) {
lookup_paths_free(&m->lookup_paths);
/* Find new unit paths */
- manager_run_generators(m);
+ q = manager_run_generators(m);
+ if (q < 0 && r >= 0)
+ r = q;
q = lookup_paths_init(
&m->lookup_paths, m->running_as, true,
@@ -2485,19 +2532,19 @@ int manager_reload(Manager *m) {
m->generator_unit_path,
m->generator_unit_path_early,
m->generator_unit_path_late);
- if (q < 0)
+ if (q < 0 && r >= 0)
r = q;
manager_build_unit_path_cache(m);
/* First, enumerate what we can from all config files */
q = manager_enumerate(m);
- if (q < 0)
+ if (q < 0 && r >= 0)
r = q;
/* Second, deserialize our stored data */
q = manager_deserialize(m, f, fds);
- if (q < 0)
+ if (q < 0 && r >= 0)
r = q;
fclose(f);
@@ -2505,12 +2552,12 @@ int manager_reload(Manager *m) {
/* Re-register notify_fd as event source */
q = manager_setup_notify(m);
- if (q < 0)
+ if (q < 0 && r >= 0)
r = q;
/* Third, fire things up! */
q = manager_coldplug(m);
- if (q < 0)
+ if (q < 0 && r >= 0)
r = q;
assert(m->n_reloading > 0);
@@ -2626,9 +2673,6 @@ void manager_check_finished(Manager *m) {
assert(m);
- if (m->n_running_jobs == 0)
- m->jobs_in_progress_event_source = sd_event_source_unref(m->jobs_in_progress_event_source);
-
if (hashmap_size(m->jobs) > 0) {
if (m->jobs_in_progress_event_source)
@@ -2738,28 +2782,33 @@ static void trim_generator_dir(Manager *m, char **generator) {
return;
}
-void manager_run_generators(Manager *m) {
- _cleanup_closedir_ DIR *d = NULL;
- const char *generator_path;
+static int manager_run_generators(Manager *m) {
+ _cleanup_free_ char **paths = NULL;
const char *argv[5];
+ char **path;
int r;
assert(m);
if (m->test_run)
- return;
+ return 0;
- generator_path = m->running_as == SYSTEMD_SYSTEM ? SYSTEM_GENERATOR_PATH : USER_GENERATOR_PATH;
- d = opendir(generator_path);
- if (!d) {
- if (errno == ENOENT)
- return;
+ paths = generator_paths(m->running_as);
+ if (!paths)
+ return log_oom();
- log_error_errno(errno, "Failed to enumerate generator directory %s: %m",
- generator_path);
- return;
+ /* Optimize by skipping the whole process by not creating output directories
+ * if no generators are found. */
+ STRV_FOREACH(path, paths) {
+ r = access(*path, F_OK);
+ if (r == 0)
+ goto found;
+ if (errno != ENOENT)
+ log_warning_errno(errno, "Failed to open generator directory %s: %m", *path);
}
+ return 0;
+ found:
r = create_generator_dir(m, &m->generator_unit_path, "generator");
if (r < 0)
goto finish;
@@ -2779,12 +2828,13 @@ void manager_run_generators(Manager *m) {
argv[4] = NULL;
RUN_WITH_UMASK(0022)
- execute_directory(generator_path, d, DEFAULT_TIMEOUT_USEC, (char**) argv);
+ execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, (char**) argv);
finish:
trim_generator_dir(m, &m->generator_unit_path);
trim_generator_dir(m, &m->generator_unit_path_early);
trim_generator_dir(m, &m->generator_unit_path_late);
+ return r;
}
static void remove_generator_dir(Manager *m, char **generator) {
@@ -2801,7 +2851,7 @@ static void remove_generator_dir(Manager *m, char **generator) {
*generator = NULL;
}
-void manager_undo_generators(Manager *m) {
+static void manager_undo_generators(Manager *m) {
assert(m);
remove_generator_dir(m, &m->generator_unit_path);