diff options
Diffstat (limited to 'qemu-nbd.c')
| -rw-r--r-- | qemu-nbd.c | 75 |
1 files changed, 39 insertions, 36 deletions
diff --git a/qemu-nbd.c b/qemu-nbd.c index 6ef8b10bcc..9bc152e6c3 100644 --- a/qemu-nbd.c +++ b/qemu-nbd.c @@ -39,10 +39,10 @@ #include <libgen.h> #include <pthread.h> -#define SOCKET_PATH "/var/lock/qemu-nbd-%s" -#define QEMU_NBD_OPT_CACHE 1 -#define QEMU_NBD_OPT_AIO 2 -#define QEMU_NBD_OPT_DISCARD 3 +#define SOCKET_PATH "/var/lock/qemu-nbd-%s" +#define QEMU_NBD_OPT_CACHE 1 +#define QEMU_NBD_OPT_AIO 2 +#define QEMU_NBD_OPT_DISCARD 3 #define QEMU_NBD_OPT_DETECT_ZEROES 4 static NBDExport *exp; @@ -60,44 +60,44 @@ static void usage(const char *name) "Usage: %s [OPTIONS] FILE\n" "QEMU Disk Network Block Device Server\n" "\n" -" -h, --help display this help and exit\n" -" -V, --version output version information and exit\n" +" -h, --help display this help and exit\n" +" -V, --version output version information and exit\n" "\n" "Connection properties:\n" -" -p, --port=PORT port to listen on (default `%d')\n" -" -b, --bind=IFACE interface to bind to (default `0.0.0.0')\n" -" -k, --socket=PATH path to the unix socket\n" -" (default '"SOCKET_PATH"')\n" -" -e, --shared=NUM device can be shared by NUM clients (default '1')\n" -" -t, --persistent don't exit on the last connection\n" -" -v, --verbose display extra debugging information\n" +" -p, --port=PORT port to listen on (default `%d')\n" +" -b, --bind=IFACE interface to bind to (default `0.0.0.0')\n" +" -k, --socket=PATH path to the unix socket\n" +" (default '"SOCKET_PATH"')\n" +" -e, --shared=NUM device can be shared by NUM clients (default '1')\n" +" -t, --persistent don't exit on the last connection\n" +" -v, --verbose display extra debugging information\n" "\n" "Exposing part of the image:\n" -" -o, --offset=OFFSET offset into the image\n" -" -P, --partition=NUM only expose partition NUM\n" +" -o, --offset=OFFSET offset into the image\n" +" -P, --partition=NUM only expose partition NUM\n" "\n" #ifdef __linux__ "Kernel NBD client support:\n" -" -c, --connect=DEV connect FILE to the local NBD device DEV\n" -" -d, --disconnect disconnect the specified device\n" +" -c, --connect=DEV connect FILE to the local NBD device DEV\n" +" -d, --disconnect disconnect the specified device\n" "\n" #endif "\n" "Block device options:\n" -" -f, --format=FORMAT set image format (raw, qcow2, ...)\n" -" -r, --read-only export read-only\n" -" -s, --snapshot use FILE as an external snapshot, create a temporary\n" -" file with backing_file=FILE, redirect the write to\n" -" the temporary one\n" +" -f, --format=FORMAT set image format (raw, qcow2, ...)\n" +" -r, --read-only export read-only\n" +" -s, --snapshot use FILE as an external snapshot, create a temporary\n" +" file with backing_file=FILE, redirect the write to\n" +" the temporary one\n" " -l, --load-snapshot=SNAPSHOT_PARAM\n" -" load an internal snapshot inside FILE and export it\n" -" as an read-only device, SNAPSHOT_PARAM format is\n" -" 'snapshot.id=[ID],snapshot.name=[NAME]', or\n" -" '[ID_OR_NAME]'\n" -" -n, --nocache disable host cache\n" -" --cache=MODE set cache mode (none, writeback, ...)\n" +" load an internal snapshot inside FILE and export it\n" +" as an read-only device, SNAPSHOT_PARAM format is\n" +" 'snapshot.id=[ID],snapshot.name=[NAME]', or\n" +" '[ID_OR_NAME]'\n" +" -n, --nocache disable host cache\n" +" --cache=MODE set cache mode (none, writeback, ...)\n" #ifdef CONFIG_LINUX_AIO -" --aio=MODE set AIO mode (native or threads)\n" +" --aio=MODE set AIO mode (native or threads)\n" #endif " --discard=MODE set discard mode (ignore, unmap)\n" " --detect-zeroes=MODE set detect-zeroes mode (off, on, discard)\n" @@ -546,15 +546,18 @@ int main(int argc, char **argv) break; case 'P': partition = strtol(optarg, &end, 0); - if (*end) + if (*end) { errx(EXIT_FAILURE, "Invalid partition `%s'", optarg); - if (partition < 1 || partition > 8) + } + if (partition < 1 || partition > 8) { errx(EXIT_FAILURE, "Invalid partition %d", partition); + } break; case 'k': sockpath = optarg; - if (sockpath[0] != '/') + if (sockpath[0] != '/') { errx(EXIT_FAILURE, "socket path must be absolute\n"); + } break; case 'd': disconnect = true; @@ -574,9 +577,9 @@ int main(int argc, char **argv) case 'f': fmt = optarg; break; - case 't': - persistent = 1; - break; + case 't': + persistent = 1; + break; case 'v': verbose = 1; break; @@ -611,7 +614,7 @@ int main(int argc, char **argv) printf("%s disconnected\n", argv[optind]); - return 0; + return 0; } if (device && !verbose) { |