diff options
Diffstat (limited to 'qemu-nbd.c')
| -rw-r--r-- | qemu-nbd.c | 106 |
1 files changed, 69 insertions, 37 deletions
diff --git a/qemu-nbd.c b/qemu-nbd.c index 933ca4a368..5fe94d0e7b 100644 --- a/qemu-nbd.c +++ b/qemu-nbd.c @@ -31,18 +31,17 @@ #include "io/channel-socket.h" #include <getopt.h> -#include <sys/types.h> -#include <signal.h> #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 QEMU_NBD_OPT_DETECT_ZEROES 4 -#define QEMU_NBD_OPT_OBJECT 5 -#define QEMU_NBD_OPT_TLSCREDS 6 +#define QEMU_NBD_OPT_CACHE 256 +#define QEMU_NBD_OPT_AIO 257 +#define QEMU_NBD_OPT_DISCARD 258 +#define QEMU_NBD_OPT_DETECT_ZEROES 259 +#define QEMU_NBD_OPT_OBJECT 260 +#define QEMU_NBD_OPT_TLSCREDS 261 +#define QEMU_NBD_OPT_IMAGE_OPTS 262 static NBDExport *exp; static bool newproto; @@ -105,6 +104,7 @@ static void usage(const char *name) " --aio=MODE set AIO mode (native or threads)\n" " --discard=MODE set discard mode (ignore, unmap)\n" " --detect-zeroes=MODE set detect-zeroes mode (off, on, unmap)\n" +" --image-opts treat FILE as a full set of image options\n" "\n" "Report bugs to <qemu-devel@nongnu.org>\n" , name, NBD_DEFAULT_PORT, "DEVICE"); @@ -394,6 +394,16 @@ static SocketAddress *nbd_build_socket_address(const char *sockpath, } +static QemuOptsList file_opts = { + .name = "file", + .implied_opt_name = "file", + .head = QTAILQ_HEAD_INITIALIZER(file_opts.head), + .desc = { + /* no elements => accept any params */ + { /* end of list */ } + }, +}; + static QemuOptsList qemu_object_opts = { .name = "object", .implied_opt_name = "qom-type", @@ -451,30 +461,32 @@ int main(int argc, char **argv) const char *sn_id_or_name = NULL; const char *sopt = "hVb:o:p:rsnP:c:dvk:e:f:tl:x:"; struct option lopt[] = { - { "help", 0, NULL, 'h' }, - { "version", 0, NULL, 'V' }, - { "bind", 1, NULL, 'b' }, - { "port", 1, NULL, 'p' }, - { "socket", 1, NULL, 'k' }, - { "offset", 1, NULL, 'o' }, - { "read-only", 0, NULL, 'r' }, - { "partition", 1, NULL, 'P' }, - { "connect", 1, NULL, 'c' }, - { "disconnect", 0, NULL, 'd' }, - { "snapshot", 0, NULL, 's' }, - { "load-snapshot", 1, NULL, 'l' }, - { "nocache", 0, NULL, 'n' }, - { "cache", 1, NULL, QEMU_NBD_OPT_CACHE }, - { "aio", 1, NULL, QEMU_NBD_OPT_AIO }, - { "discard", 1, NULL, QEMU_NBD_OPT_DISCARD }, - { "detect-zeroes", 1, NULL, QEMU_NBD_OPT_DETECT_ZEROES }, - { "shared", 1, NULL, 'e' }, - { "format", 1, NULL, 'f' }, - { "persistent", 0, NULL, 't' }, - { "verbose", 0, NULL, 'v' }, - { "object", 1, NULL, QEMU_NBD_OPT_OBJECT }, - { "export-name", 1, NULL, 'x' }, - { "tls-creds", 1, NULL, QEMU_NBD_OPT_TLSCREDS }, + { "help", no_argument, NULL, 'h' }, + { "version", no_argument, NULL, 'V' }, + { "bind", required_argument, NULL, 'b' }, + { "port", required_argument, NULL, 'p' }, + { "socket", required_argument, NULL, 'k' }, + { "offset", required_argument, NULL, 'o' }, + { "read-only", no_argument, NULL, 'r' }, + { "partition", required_argument, NULL, 'P' }, + { "connect", required_argument, NULL, 'c' }, + { "disconnect", no_argument, NULL, 'd' }, + { "snapshot", no_argument, NULL, 's' }, + { "load-snapshot", required_argument, NULL, 'l' }, + { "nocache", no_argument, NULL, 'n' }, + { "cache", required_argument, NULL, QEMU_NBD_OPT_CACHE }, + { "aio", required_argument, NULL, QEMU_NBD_OPT_AIO }, + { "discard", required_argument, NULL, QEMU_NBD_OPT_DISCARD }, + { "detect-zeroes", required_argument, NULL, + QEMU_NBD_OPT_DETECT_ZEROES }, + { "shared", required_argument, NULL, 'e' }, + { "format", required_argument, NULL, 'f' }, + { "persistent", no_argument, NULL, 't' }, + { "verbose", no_argument, NULL, 'v' }, + { "object", required_argument, NULL, QEMU_NBD_OPT_OBJECT }, + { "export-name", required_argument, NULL, 'x' }, + { "tls-creds", required_argument, NULL, QEMU_NBD_OPT_TLSCREDS }, + { "image-opts", no_argument, NULL, QEMU_NBD_OPT_IMAGE_OPTS }, { NULL, 0, NULL, 0 } }; int ch; @@ -493,6 +505,7 @@ int main(int argc, char **argv) QDict *options = NULL; const char *export_name = NULL; const char *tlscredsid = NULL; + bool imageOpts = false; /* The client thread uses SIGTERM to interrupt the server. A signal * handler ensures that "qemu-nbd -v -c" exits with a nice status code. @@ -672,6 +685,9 @@ int main(int argc, char **argv) case QEMU_NBD_OPT_TLSCREDS: tlscredsid = optarg; break; + case QEMU_NBD_OPT_IMAGE_OPTS: + imageOpts = true; + break; } } @@ -800,13 +816,29 @@ int main(int argc, char **argv) bdrv_init(); atexit(bdrv_close_all); - if (fmt) { - options = qdict_new(); - qdict_put(options, "driver", qstring_from_str(fmt)); + srcpath = argv[optind]; + if (imageOpts) { + QemuOpts *opts; + if (fmt) { + error_report("--image-opts and -f are mutually exclusive"); + exit(EXIT_FAILURE); + } + opts = qemu_opts_parse_noisily(&file_opts, srcpath, true); + if (!opts) { + qemu_opts_reset(&file_opts); + exit(EXIT_FAILURE); + } + options = qemu_opts_to_qdict(opts, NULL); + qemu_opts_reset(&file_opts); + blk = blk_new_open("hda", NULL, NULL, options, flags, &local_err); + } else { + if (fmt) { + options = qdict_new(); + qdict_put(options, "driver", qstring_from_str(fmt)); + } + blk = blk_new_open("hda", srcpath, NULL, options, flags, &local_err); } - srcpath = argv[optind]; - blk = blk_new_open("hda", srcpath, NULL, options, flags, &local_err); if (!blk) { error_reportf_err(local_err, "Failed to blk_new_open '%s': ", argv[optind]); |