/* SPDX-License-Identifier: LGPL-2.1+ */
-/***
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
#include <errno.h>
#include <getopt.h>
#include "env-util.h"
#include "format-util.h"
#include "log.h"
+#include "main-func.h"
#include "parse-util.h"
+#include "pretty-print.h"
#include "string-util.h"
#include "strv.h"
#include "user-util.h"
static uid_t arg_uid = UID_INVALID;
static gid_t arg_gid = GID_INVALID;
-static void help(void) {
+static int help(void) {
+ _cleanup_free_ char *link = NULL;
+ int r;
+
+ r = terminal_urlify_man("systemd-notify", "1", &link);
+ if (r < 0)
+ return log_oom();
+
printf("%s [OPTIONS...] [VARIABLE=VALUE...]\n\n"
"Notify the init system about service status updates.\n\n"
" -h --help Show this help\n"
" --pid[=PID] Set main PID of daemon\n"
" --uid=USER Set user to send from\n"
" --status=TEXT Set status text\n"
- " --booted Check if the system was booted up with systemd\n",
- program_invocation_short_name);
+ " --booted Check if the system was booted up with systemd\n"
+ "\nSee the %s for details.\n"
+ , program_invocation_short_name
+ , link
+ );
+
+ return 0;
}
static int parse_argv(int argc, char *argv[]) {
switch (c) {
case 'h':
- help();
- return 0;
+ return help();
case ARG_VERSION:
return version();
case ARG_PID:
if (optarg) {
- if (parse_pid(optarg, &arg_pid) < 0) {
- log_error("Failed to parse PID %s.", optarg);
- return -EINVAL;
- }
+ if (parse_pid(optarg, &arg_pid) < 0)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Failed to parse PID %s.", optarg);
} else
arg_pid = getppid();
case ARG_UID: {
const char *u = optarg;
- r = get_user_creds(&u, &arg_uid, &arg_gid, NULL, NULL);
+ r = get_user_creds(&u, &arg_uid, &arg_gid, NULL, NULL, 0);
if (r == -ESRCH) /* If the user doesn't exist, then accept it anyway as numeric */
r = parse_uid(u, &arg_uid);
if (r < 0)
return 1;
}
-int main(int argc, char* argv[]) {
+static int run(int argc, char* argv[]) {
_cleanup_free_ char *status = NULL, *cpid = NULL, *n = NULL;
_cleanup_strv_free_ char **final_env = NULL;
char* our_env[4];
unsigned i = 0;
int r;
+ log_show_color(true);
log_parse_environment();
log_open();
r = parse_argv(argc, argv);
if (r <= 0)
- goto finish;
+ return r;
if (arg_booted)
return sd_booted() <= 0;
if (arg_status) {
status = strappend("STATUS=", arg_status);
- if (!status) {
- r = log_oom();
- goto finish;
- }
+ if (!status)
+ return log_oom();
our_env[i++] = status;
}
if (arg_pid > 0) {
- if (asprintf(&cpid, "MAINPID="PID_FMT, arg_pid) < 0) {
- r = log_oom();
- goto finish;
- }
+ if (asprintf(&cpid, "MAINPID="PID_FMT, arg_pid) < 0)
+ return log_oom();
our_env[i++] = cpid;
}
our_env[i++] = NULL;
final_env = strv_env_merge(2, our_env, argv + optind);
- if (!final_env) {
- r = log_oom();
- goto finish;
- }
+ if (!final_env)
+ return log_oom();
- if (strv_isempty(final_env)) {
- r = 0;
- goto finish;
- }
+ if (strv_isempty(final_env))
+ return 0;
n = strv_join(final_env, "\n");
- if (!n) {
- r = log_oom();
- goto finish;
- }
+ if (!n)
+ return log_oom();
- /* If this is requested change to the requested UID/GID. Note thta we only change the real UID here, and leave
+ /* If this is requested change to the requested UID/GID. Note that we only change the real UID here, and leave
the effective UID in effect (which is 0 for this to work). That's because we want the privileges to fake the
ucred data, and sd_pid_notify() uses the real UID for filling in ucred. */
- if (arg_gid != GID_INVALID)
- if (setregid(arg_gid, (gid_t) -1) < 0) {
- r = log_error_errno(errno, "Failed to change GID: %m");
- goto finish;
- }
+ if (arg_gid != GID_INVALID &&
+ setregid(arg_gid, (gid_t) -1) < 0)
+ return log_error_errno(errno, "Failed to change GID: %m");
- if (arg_uid != UID_INVALID)
- if (setreuid(arg_uid, (uid_t) -1) < 0) {
- r = log_error_errno(errno, "Failed to change UID: %m");
- goto finish;
- }
+ if (arg_uid != UID_INVALID &&
+ setreuid(arg_uid, (uid_t) -1) < 0)
+ return log_error_errno(errno, "Failed to change UID: %m");
r = sd_pid_notify(arg_pid ? arg_pid : getppid(), false, n);
- if (r < 0) {
- log_error_errno(r, "Failed to notify init system: %m");
- goto finish;
- } else if (r == 0) {
- log_error("No status data could be sent: $NOTIFY_SOCKET was not set");
- r = -EOPNOTSUPP;
- }
-
-finish:
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+ if (r < 0)
+ return log_error_errno(r, "Failed to notify init system: %m");
+ if (r == 0)
+ return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
+ "No status data could be sent: $NOTIFY_SOCKET was not set");
+ return 0;
}
+
+DEFINE_MAIN_FUNCTION(run);
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