diff options
Diffstat (limited to 'src/journal/cat.c')
| -rw-r--r-- | src/journal/cat.c | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/src/journal/cat.c b/src/journal/cat.c deleted file mode 100644 index 08c844d44f..0000000000 --- a/src/journal/cat.c +++ /dev/null @@ -1,161 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2012 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 <fcntl.h> -#include <getopt.h> -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> - -#include "sd-journal.h" - -#include "fd-util.h" -#include "parse-util.h" -#include "string-util.h" -#include "syslog-util.h" -#include "util.h" - -static const char *arg_identifier = NULL; -static int arg_priority = LOG_INFO; -static bool arg_level_prefix = true; - -static void help(void) { - printf("%s [OPTIONS...] {COMMAND} ...\n\n" - "Execute process with stdout/stderr connected to the journal.\n\n" - " -h --help Show this help\n" - " --version Show package version\n" - " -t --identifier=STRING Set syslog identifier\n" - " -p --priority=PRIORITY Set priority value (0..7)\n" - " --level-prefix=BOOL Control whether level prefix shall be parsed\n" - , program_invocation_short_name); -} - -static int parse_argv(int argc, char *argv[]) { - - enum { - ARG_VERSION = 0x100, - ARG_LEVEL_PREFIX - }; - - static const struct option options[] = { - { "help", no_argument, NULL, 'h' }, - { "version", no_argument, NULL, ARG_VERSION }, - { "identifier", required_argument, NULL, 't' }, - { "priority", required_argument, NULL, 'p' }, - { "level-prefix", required_argument, NULL, ARG_LEVEL_PREFIX }, - {} - }; - - int c; - - assert(argc >= 0); - assert(argv); - - while ((c = getopt_long(argc, argv, "+ht:p:", options, NULL)) >= 0) - - switch (c) { - - case 'h': - help(); - return 0; - - case ARG_VERSION: - return version(); - - case 't': - if (isempty(optarg)) - arg_identifier = NULL; - else - arg_identifier = optarg; - break; - - case 'p': - arg_priority = log_level_from_string(optarg); - if (arg_priority < 0) { - log_error("Failed to parse priority value."); - return -EINVAL; - } - break; - - case ARG_LEVEL_PREFIX: { - int k; - - k = parse_boolean(optarg); - if (k < 0) - return log_error_errno(k, "Failed to parse level prefix value."); - - arg_level_prefix = k; - break; - } - - case '?': - return -EINVAL; - - default: - assert_not_reached("Unhandled option"); - } - - return 1; -} - -int main(int argc, char *argv[]) { - _cleanup_close_ int fd = -1, saved_stderr = -1; - int r; - - log_parse_environment(); - log_open(); - - r = parse_argv(argc, argv); - if (r <= 0) - goto finish; - - fd = sd_journal_stream_fd(arg_identifier, arg_priority, arg_level_prefix); - if (fd < 0) { - r = log_error_errno(fd, "Failed to create stream fd: %m"); - goto finish; - } - - saved_stderr = fcntl(STDERR_FILENO, F_DUPFD_CLOEXEC, 3); - - if (dup3(fd, STDOUT_FILENO, 0) < 0 || - dup3(fd, STDERR_FILENO, 0) < 0) { - r = log_error_errno(errno, "Failed to duplicate fd: %m"); - goto finish; - } - - if (fd >= 3) - safe_close(fd); - fd = -1; - - if (argc <= optind) - (void) execl("/bin/cat", "/bin/cat", NULL); - else - (void) execvp(argv[optind], argv + optind); - r = -errno; - - /* Let's try to restore a working stderr, so we can print the error message */ - if (saved_stderr >= 0) - (void) dup3(saved_stderr, STDERR_FILENO, 0); - - log_error_errno(r, "Failed to execute process: %m"); - -finish: - return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; -} |