diff options
| -rw-r--r-- | contrib/ivshmem-server/main.c | 86 |
1 files changed, 42 insertions, 44 deletions
diff --git a/contrib/ivshmem-server/main.c b/contrib/ivshmem-server/main.c index cca1061f0e..3332a8cee6 100644 --- a/contrib/ivshmem-server/main.c +++ b/contrib/ivshmem-server/main.c @@ -33,31 +33,32 @@ typedef struct IvshmemServerArgs { unsigned n_vectors; } IvshmemServerArgs; -/* show ivshmem_server_usage and exit with given error code */ static void -ivshmem_server_usage(const char *name, int code) +ivshmem_server_usage(const char *progname) { - fprintf(stderr, "%s [opts]\n", name); - fprintf(stderr, " -h: show this help\n"); - fprintf(stderr, " -v: verbose mode\n"); - fprintf(stderr, " -F: foreground mode (default is to daemonize)\n"); - fprintf(stderr, " -p <pid_file>: path to the PID file (used in daemon\n" - " mode only).\n" - " Default=%s\n", IVSHMEM_SERVER_DEFAULT_SHM_PATH); - fprintf(stderr, " -S <unix_socket_path>: path to the unix socket\n" - " to listen to.\n" - " Default=%s\n", IVSHMEM_SERVER_DEFAULT_UNIX_SOCK_PATH); - fprintf(stderr, " -m <shm_path>: path to the shared memory.\n" - " The path corresponds to a POSIX shm name or a\n" - " hugetlbfs mount point.\n" - " default=%s\n", IVSHMEM_SERVER_DEFAULT_SHM_PATH); - fprintf(stderr, " -l <size>: size of shared memory in bytes. The suffix\n" - " K, M and G can be used (ex: 1K means 1024).\n" - " default=%u\n", IVSHMEM_SERVER_DEFAULT_SHM_SIZE); - fprintf(stderr, " -n <n_vects>: number of vectors.\n" - " default=%u\n", IVSHMEM_SERVER_DEFAULT_N_VECTORS); - - exit(code); + printf("Usage: %s [OPTION]...\n" + " -h: show this help\n" + " -v: verbose mode\n" + " -F: foreground mode (default is to daemonize)\n" + " -p <pid-file>: path to the PID file (used in daemon mode only)\n" + " default " IVSHMEM_SERVER_DEFAULT_PID_FILE "\n" + " -S <unix-socket-path>: path to the unix socket to listen to\n" + " default " IVSHMEM_SERVER_DEFAULT_UNIX_SOCK_PATH "\n" + " -m <shm-path>: POSIX shared memory object name or a hugetlbfs mount point\n" + " default " IVSHMEM_SERVER_DEFAULT_SHM_PATH "\n" + " -l <size>: size of shared memory in bytes\n" + " suffixes K, M and G can be used, e.g. 1K means 1024\n" + " default %u\n" + " -n <nvectors>: number of vectors\n" + " default %u\n", + progname, IVSHMEM_SERVER_DEFAULT_SHM_SIZE, + IVSHMEM_SERVER_DEFAULT_N_VECTORS); +} + +static void +ivshmem_server_help(const char *progname) +{ + fprintf(stderr, "Try '%s -h' for more information.\n", progname); } /* parse the program arguments, exit on error */ @@ -68,20 +69,12 @@ ivshmem_server_parse_args(IvshmemServerArgs *args, int argc, char *argv[]) unsigned long long v; Error *err = NULL; - while ((c = getopt(argc, argv, - "h" /* help */ - "v" /* verbose */ - "F" /* foreground */ - "p:" /* pid_file */ - "S:" /* unix_socket_path */ - "m:" /* shm_path */ - "l:" /* shm_size */ - "n:" /* n_vectors */ - )) != -1) { + while ((c = getopt(argc, argv, "hvFp:S:m:l:n:")) != -1) { switch (c) { case 'h': /* help */ - ivshmem_server_usage(argv[0], 0); + ivshmem_server_usage(argv[0]); + exit(0); break; case 'v': /* verbose */ @@ -92,36 +85,39 @@ ivshmem_server_parse_args(IvshmemServerArgs *args, int argc, char *argv[]) args->foreground = 1; break; - case 'p': /* pid_file */ + case 'p': /* pid file */ args->pid_file = optarg; break; - case 'S': /* unix_socket_path */ + case 'S': /* unix socket path */ args->unix_socket_path = optarg; break; - case 'm': /* shm_path */ + case 'm': /* shm path */ args->shm_path = optarg; break; - case 'l': /* shm_size */ + case 'l': /* shm size */ parse_option_size("shm_size", optarg, &args->shm_size, &err); if (err) { error_report_err(err); - ivshmem_server_usage(argv[0], 1); + ivshmem_server_help(argv[0]); + exit(1); } break; - case 'n': /* n_vectors */ + case 'n': /* number of vectors */ if (parse_uint_full(optarg, &v, 0) < 0) { fprintf(stderr, "cannot parse n_vectors\n"); - ivshmem_server_usage(argv[0], 1); + ivshmem_server_help(argv[0]); + exit(1); } args->n_vectors = v; break; default: - ivshmem_server_usage(argv[0], 1); + ivshmem_server_usage(argv[0]); + exit(1); break; } } @@ -129,12 +125,14 @@ ivshmem_server_parse_args(IvshmemServerArgs *args, int argc, char *argv[]) if (args->n_vectors > IVSHMEM_SERVER_MAX_VECTORS) { fprintf(stderr, "too many requested vectors (max is %d)\n", IVSHMEM_SERVER_MAX_VECTORS); - ivshmem_server_usage(argv[0], 1); + ivshmem_server_help(argv[0]); + exit(1); } if (args->verbose == 1 && args->foreground == 0) { fprintf(stderr, "cannot use verbose in daemon mode\n"); - ivshmem_server_usage(argv[0], 1); + ivshmem_server_help(argv[0]); + exit(1); } } |