0c69794138
These lines are generally out-of-date, incomplete and unnecessary. With SPDX and git repository much more accurate and fine grained information about licensing and authorship is available, hence let's drop the per-file copyright notice. Of course, removing copyright lines of others is problematic, hence this commit only removes my own lines and leaves all others untouched. It might be nicer if sooner or later those could go away too, making git the only and accurate source of authorship information.
142 lines
4.2 KiB
C
142 lines
4.2 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#include <errno.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "sd-journal.h"
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#include "fd-util.h"
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#include "parse-util.h"
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#include "string-util.h"
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#include "syslog-util.h"
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#include "util.h"
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static const char *arg_identifier = NULL;
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static int arg_priority = LOG_INFO;
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static bool arg_level_prefix = true;
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static void help(void) {
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printf("%s [OPTIONS...] {COMMAND} ...\n\n"
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"Execute process with stdout/stderr connected to the journal.\n\n"
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" -h --help Show this help\n"
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" --version Show package version\n"
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" -t --identifier=STRING Set syslog identifier\n"
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" -p --priority=PRIORITY Set priority value (0..7)\n"
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" --level-prefix=BOOL Control whether level prefix shall be parsed\n"
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, program_invocation_short_name);
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}
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static int parse_argv(int argc, char *argv[]) {
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enum {
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ARG_VERSION = 0x100,
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ARG_LEVEL_PREFIX
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};
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static const struct option options[] = {
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{ "help", no_argument, NULL, 'h' },
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{ "version", no_argument, NULL, ARG_VERSION },
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{ "identifier", required_argument, NULL, 't' },
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{ "priority", required_argument, NULL, 'p' },
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{ "level-prefix", required_argument, NULL, ARG_LEVEL_PREFIX },
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{}
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};
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int c;
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assert(argc >= 0);
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assert(argv);
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while ((c = getopt_long(argc, argv, "+ht:p:", options, NULL)) >= 0)
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switch (c) {
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case 'h':
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help();
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return 0;
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case ARG_VERSION:
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return version();
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case 't':
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if (isempty(optarg))
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arg_identifier = NULL;
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else
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arg_identifier = optarg;
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break;
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case 'p':
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arg_priority = log_level_from_string(optarg);
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if (arg_priority < 0) {
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log_error("Failed to parse priority value.");
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return -EINVAL;
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}
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break;
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case ARG_LEVEL_PREFIX: {
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int k;
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k = parse_boolean(optarg);
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if (k < 0)
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return log_error_errno(k, "Failed to parse level prefix value.");
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arg_level_prefix = k;
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break;
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}
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case '?':
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return -EINVAL;
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default:
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assert_not_reached("Unhandled option");
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}
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return 1;
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}
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int main(int argc, char *argv[]) {
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_cleanup_close_ int fd = -1, saved_stderr = -1;
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int r;
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log_parse_environment();
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log_open();
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r = parse_argv(argc, argv);
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if (r <= 0)
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goto finish;
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fd = sd_journal_stream_fd(arg_identifier, arg_priority, arg_level_prefix);
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if (fd < 0) {
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r = log_error_errno(fd, "Failed to create stream fd: %m");
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goto finish;
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}
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saved_stderr = fcntl(STDERR_FILENO, F_DUPFD_CLOEXEC, 3);
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r = rearrange_stdio(STDIN_FILENO, fd, fd); /* Invalidates fd on succcess + error! */
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fd = -1;
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if (r < 0) {
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log_error_errno(r, "Failed to rearrange stdout/stderr: %m");
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goto finish;
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}
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if (argc <= optind)
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(void) execl("/bin/cat", "/bin/cat", NULL);
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else
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(void) execvp(argv[optind], argv + optind);
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r = -errno;
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/* Let's try to restore a working stderr, so we can print the error message */
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if (saved_stderr >= 0)
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(void) dup3(saved_stderr, STDERR_FILENO, 0);
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log_error_errno(r, "Failed to execute process: %m");
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finish:
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return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
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}
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