qemu-nbd: fix indentation and coding style

Signed-off-by: NPeter Lieven <pl@kamp.de>
Reviewed-by: NEric Blake <eblake@redhat.com>
Reviewed-by: NBenoit Canet <benoit.canet@nodalink.com>
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>

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) {