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Diffstat (limited to 'utilities/ovs-kill.c')
| -rw-r--r-- | utilities/ovs-kill.c | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/utilities/ovs-kill.c b/utilities/ovs-kill.c new file mode 100644 index 000000000..f30bf0b94 --- /dev/null +++ b/utilities/ovs-kill.c @@ -0,0 +1,210 @@ +/* + * Copyright (c) 2008, 2009 Nicira Networks. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <config.h> +#include <errno.h> +#include <fcntl.h> +#include <getopt.h> +#include <signal.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include "command-line.h" +#include "daemon.h" +#include "timeval.h" +#include "util.h" +#include "vlog.h" + +/* -s, --signal: signal to send. */ +static int sig_nr = SIGTERM; + +/* -f, --force: ignore errors. */ +static bool force; + +static void cond_error(int err_no, const char *, ...) PRINTF_FORMAT(2, 3); + +static void parse_options(int argc, char *argv[]); +static void usage(void); + +int +main(int argc, char *argv[]) +{ + bool ok = true; + int i; + + set_program_name(argv[0]); + time_init(); + vlog_init(); + parse_options(argc, argv); + + argc -= optind; + argv += optind; + if (argc < 1) { + if (!force) { + ovs_fatal(0, "need at least one non-option argument; " + "use --help for usage"); + } + } + + for (i = 0; i < argc; i++) { + char *pidfile; + pid_t pid; + + pidfile = make_pidfile_name(argv[i]); + pid = read_pidfile(pidfile); + if (pid >= 0) { + if (kill(pid, sig_nr) < 0) { + cond_error(errno, "%s: kill(%ld)", pidfile, (long int) pid); + } + } else { + cond_error(-pid, "could not read %s", pidfile); + } + free(pidfile); + } + + return ok || force ? EXIT_SUCCESS : EXIT_FAILURE; +} + +static void +parse_options(int argc, char *argv[]) +{ + static struct option long_options[] = { + {"signal", required_argument, 0, 's'}, + {"force", no_argument, 0, 'f'}, + {"help", no_argument, 0, 'h'}, + {"version", no_argument, 0, 'V'}, + {0, 0, 0, 0}, + }; + char *short_options = long_options_to_short_options(long_options); + + for (;;) { + int c; + + c = getopt_long(argc, argv, short_options, long_options, NULL); + if (c == -1) { + break; + } + + switch (c) { + case 's': + if (atoi(optarg) || !strcmp(optarg, "0")) { + sig_nr = atoi(optarg); + } else { + struct signal_name { + const char *name; + int number; + }; + + static const struct signal_name signals[] = { +#define SIGNAL(NAME) { #NAME, NAME } + SIGNAL(SIGABRT), + SIGNAL(SIGALRM), + SIGNAL(SIGBUS), + SIGNAL(SIGCHLD), + SIGNAL(SIGCONT), + SIGNAL(SIGFPE), + SIGNAL(SIGHUP), + SIGNAL(SIGILL), + SIGNAL(SIGINT), + SIGNAL(SIGKILL), + SIGNAL(SIGPIPE), + SIGNAL(SIGQUIT), + SIGNAL(SIGSEGV), + SIGNAL(SIGSTOP), + SIGNAL(SIGTERM), + SIGNAL(SIGTSTP), + SIGNAL(SIGTTIN), + SIGNAL(SIGTTOU), + SIGNAL(SIGUSR1), + SIGNAL(SIGUSR2), +#ifdef SIGPOLL + SIGNAL(SIGPOLL), +#endif + SIGNAL(SIGPROF), + SIGNAL(SIGSYS), + SIGNAL(SIGTRAP), + SIGNAL(SIGURG), + SIGNAL(SIGVTALRM), + SIGNAL(SIGXCPU), + SIGNAL(SIGXFSZ), +#undef SIGNAL + }; + int i; + + for (i = 0; i < ARRAY_SIZE(signals); i++) { + const struct signal_name *s = &signals[i]; + if (!strcmp(optarg, s->name) + || !strcmp(optarg, s->name + 3)) { + sig_nr = s->number; + goto got_name; + } + } + ovs_fatal(0, "unknown signal \"%s\"", optarg); + got_name: ; + } + break; + + case 'f': + force = true; + break; + + case 'h': + usage(); + + case 'V': + OVS_PRINT_VERSION(0, 0); + exit(EXIT_SUCCESS); + + case '?': + exit(EXIT_FAILURE); + + default: + abort(); + } + } + free(short_options); +} + +static void +usage(void) +{ + printf("%s: kills a program using a pidfile\n" + "usage: %s [OPTIONS] PIDFILE [PIDFILE...]\n" + "where PIDFILE is a pidfile created by an Open vSwitch daemon.\n" + "\nOptions:\n" + " -s, --signal=NUMBER|NAME signal to send (default: TERM)\n" + " -f, --force ignore errors\n" + " -h, --help display this help message\n" + " -V, --version display version information\n", + program_name, program_name); + exit(EXIT_SUCCESS); +} + +static void +cond_error(int err_no, const char *format, ...) +{ + if (!force) { + va_list args; + + fprintf(stderr, "%s: ", program_name); + va_start(args, format); + vfprintf(stderr, format, args); + va_end(args); + if (err_no != 0) + fprintf(stderr, " (%s)", strerror(err_no)); + putc('\n', stderr); + } +} |