1cd831bd7Sths /* 27a5ca864Sbellard * Copyright (C) 2005 Anthony Liguori <anthony@codemonkey.ws> 37a5ca864Sbellard * 47a5ca864Sbellard * Network Block Device 57a5ca864Sbellard * 67a5ca864Sbellard * This program is free software; you can redistribute it and/or modify 77a5ca864Sbellard * it under the terms of the GNU General Public License as published by 87a5ca864Sbellard * the Free Software Foundation; under version 2 of the License. 97a5ca864Sbellard * 107a5ca864Sbellard * This program is distributed in the hope that it will be useful, 117a5ca864Sbellard * but WITHOUT ANY WARRANTY; without even the implied warranty of 127a5ca864Sbellard * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 137a5ca864Sbellard * GNU General Public License for more details. 147a5ca864Sbellard * 157a5ca864Sbellard * You should have received a copy of the GNU General Public License 168167ee88SBlue Swirl * along with this program; if not, see <http://www.gnu.org/licenses/>. 177a5ca864Sbellard */ 187a5ca864Sbellard 19d38ea87aSPeter Maydell #include "qemu/osdep.h" 20c2a3d7daSEric Blake #include <getopt.h> 21c2a3d7daSEric Blake #include <libgen.h> 22c2a3d7daSEric Blake #include <pthread.h> 23c2a3d7daSEric Blake 24a8d25326SMarkus Armbruster #include "qemu-common.h" 25da34e65cSMarkus Armbruster #include "qapi/error.h" 26f348b6d1SVeronia Bahaa #include "qemu/cutils.h" 2726f54e9aSMarkus Armbruster #include "sysemu/block-backend.h" 28cbc20bfbSStefan Hajnoczi #include "sysemu/runstate.h" /* for qemu_system_killed() prototype */ 29b3838a40SPeter Lieven #include "block/block_int.h" 30737e150eSPaolo Bonzini #include "block/nbd.h" 316a1751b7SAlex Bligh #include "qemu/main-loop.h" 320b8fa32fSMarkus Armbruster #include "qemu/module.h" 33922a01a0SMarkus Armbruster #include "qemu/option.h" 34537b41f5SPaolo Bonzini #include "qemu/error-report.h" 350ab3b337SDaniel P. Berrange #include "qemu/config-file.h" 3658369e22SPaolo Bonzini #include "qemu/bswap.h" 3739ca463eSDenis V. Lunev #include "qemu/log.h" 3853fabd4bSPaolo Bonzini #include "qemu/systemd.h" 398c116b0eSWenchao Xia #include "block/snapshot.h" 40452fcdbcSMarkus Armbruster #include "qapi/qmp/qdict.h" 41d49b6836SMarkus Armbruster #include "qapi/qmp/qstring.h" 420ab3b337SDaniel P. Berrange #include "qom/object_interfaces.h" 43d0d6ff58SDaniel P. Berrange #include "io/channel-socket.h" 44e4849c1dSDaniel P. Berrange #include "io/net-listener.h" 45c2297088SDaniel P. Berrange #include "crypto/init.h" 4639ca463eSDenis V. Lunev #include "trace/control.h" 47be377133SEric Blake #include "qemu-version.h" 487a5ca864Sbellard 493c1fa35dSEric Blake #ifdef __linux__ 503c1fa35dSEric Blake #define HAVE_NBD_DEVICE 1 513c1fa35dSEric Blake #else 523c1fa35dSEric Blake #define HAVE_NBD_DEVICE 0 533c1fa35dSEric Blake #endif 543c1fa35dSEric Blake 55cd831bd7Sths #define SOCKET_PATH "/var/lock/qemu-nbd-%s" 56fa8b7ce2SDaniel P. Berrange #define QEMU_NBD_OPT_CACHE 256 57fa8b7ce2SDaniel P. Berrange #define QEMU_NBD_OPT_AIO 257 58fa8b7ce2SDaniel P. Berrange #define QEMU_NBD_OPT_DISCARD 258 59fa8b7ce2SDaniel P. Berrange #define QEMU_NBD_OPT_DETECT_ZEROES 259 60fa8b7ce2SDaniel P. Berrange #define QEMU_NBD_OPT_OBJECT 260 61fa8b7ce2SDaniel P. Berrange #define QEMU_NBD_OPT_TLSCREDS 261 62fa8b7ce2SDaniel P. Berrange #define QEMU_NBD_OPT_IMAGE_OPTS 262 63ffb31e1dSMax Reitz #define QEMU_NBD_OPT_FORK 263 64b25e12daSDaniel P. Berrange #define QEMU_NBD_OPT_TLSAUTHZ 264 65637bc5a5SMax Reitz #define QEMU_NBD_OPT_PID_FILE 265 667a5ca864Sbellard 67bd31c214SEric Blake #define MBR_SIZE 512 68bd31c214SEric Blake 69b1d8e52eSblueswir1 static int verbose; 70a517e88bSPaolo Bonzini static char *srcpath; 71bd269ebcSMarkus Armbruster static SocketAddress *saddr; 727860a380SPaolo Bonzini static int persistent = 0; 73d794f7f3SKevin Wolf static enum { RUNNING, TERMINATE, TERMINATED } state; 74a61c6782SPaolo Bonzini static int shared = 1; 75a61c6782SPaolo Bonzini static int nb_fds; 76e4849c1dSDaniel P. Berrange static QIONetListener *server; 77145614a1SDaniel P. Berrange static QCryptoTLSCreds *tlscreds; 78b25e12daSDaniel P. Berrange static const char *tlsauthz; 797a5ca864Sbellard 807a5ca864Sbellard static void usage(const char *name) 817a5ca864Sbellard { 82b033cd86SPaolo Bonzini (printf) ( 837a5ca864Sbellard "Usage: %s [OPTIONS] FILE\n" 8468b96f15SEric Blake " or: %s -L [OPTIONS]\n" 8568b96f15SEric Blake "QEMU Disk Network Block Device Utility\n" 867a5ca864Sbellard "\n" 877a5ca864Sbellard " -h, --help display this help and exit\n" 887a5ca864Sbellard " -V, --version output version information and exit\n" 897a5ca864Sbellard "\n" 90b033cd86SPaolo Bonzini "Connection properties:\n" 91b033cd86SPaolo Bonzini " -p, --port=PORT port to listen on (default `%d')\n" 92b033cd86SPaolo Bonzini " -b, --bind=IFACE interface to bind to (default `0.0.0.0')\n" 93b033cd86SPaolo Bonzini " -k, --socket=PATH path to the unix socket\n" 94b033cd86SPaolo Bonzini " (default '"SOCKET_PATH"')\n" 95b033cd86SPaolo Bonzini " -e, --shared=NUM device can be shared by NUM clients (default '1')\n" 96b033cd86SPaolo Bonzini " -t, --persistent don't exit on the last connection\n" 97b033cd86SPaolo Bonzini " -v, --verbose display extra debugging information\n" 98f5cd0bb5SVladimir Sementsov-Ogievskiy " -x, --export-name=NAME expose export by name (default is empty string)\n" 99f5cd0bb5SVladimir Sementsov-Ogievskiy " -D, --description=TEXT export a human-readable description\n" 100b033cd86SPaolo Bonzini "\n" 101b033cd86SPaolo Bonzini "Exposing part of the image:\n" 102b033cd86SPaolo Bonzini " -o, --offset=OFFSET offset into the image\n" 103dbc7b014SEric Blake " -A, --allocation-depth expose the allocation depth\n" 104636192c4SEric Blake " -B, --bitmap=NAME expose a persistent dirty bitmap\n" 105b033cd86SPaolo Bonzini "\n" 1060ab3b337SDaniel P. Berrange "General purpose options:\n" 10768b96f15SEric Blake " -L, --list list exports available from another NBD server\n" 1080ab3b337SDaniel P. Berrange " --object type,id=ID,... define an object such as 'secret' for providing\n" 1090ab3b337SDaniel P. Berrange " passwords and/or encryption keys\n" 110f7812df7SEric Blake " --tls-creds=ID use id of an earlier --object to provide TLS\n" 111b25e12daSDaniel P. Berrange " --tls-authz=ID use id of an earlier --object to provide\n" 112b25e12daSDaniel P. Berrange " authorization\n" 11339ca463eSDenis V. Lunev " -T, --trace [[enable=]<pattern>][,events=<file>][,file=<file>]\n" 11439ca463eSDenis V. Lunev " specify tracing options\n" 115ffb31e1dSMax Reitz " --fork fork off the server process and exit the parent\n" 116ffb31e1dSMax Reitz " once the server is running\n" 117637bc5a5SMax Reitz " --pid-file=PATH store the server's process ID in the given file\n" 1183c1fa35dSEric Blake #if HAVE_NBD_DEVICE 1193c1fa35dSEric Blake "\n" 120b033cd86SPaolo Bonzini "Kernel NBD client support:\n" 121b033cd86SPaolo Bonzini " -c, --connect=DEV connect FILE to the local NBD device DEV\n" 122b033cd86SPaolo Bonzini " -d, --disconnect disconnect the specified device\n" 123b033cd86SPaolo Bonzini #endif 124b033cd86SPaolo Bonzini "\n" 125b033cd86SPaolo Bonzini "Block device options:\n" 1264323fdcfSWenchao Xia " -f, --format=FORMAT set image format (raw, qcow2, ...)\n" 127b033cd86SPaolo Bonzini " -r, --read-only export read-only\n" 1288c116b0eSWenchao Xia " -s, --snapshot use FILE as an external snapshot, create a temporary\n" 1298c116b0eSWenchao Xia " file with backing_file=FILE, redirect the write to\n" 1308c116b0eSWenchao Xia " the temporary one\n" 1318c116b0eSWenchao Xia " -l, --load-snapshot=SNAPSHOT_PARAM\n" 1328c116b0eSWenchao Xia " load an internal snapshot inside FILE and export it\n" 1338c116b0eSWenchao Xia " as an read-only device, SNAPSHOT_PARAM format is\n" 1348c116b0eSWenchao Xia " 'snapshot.id=[ID],snapshot.name=[NAME]', or\n" 1358c116b0eSWenchao Xia " '[ID_OR_NAME]'\n" 136b033cd86SPaolo Bonzini " -n, --nocache disable host cache\n" 13739a5235cSPaolo Bonzini " --cache=MODE set cache mode (none, writeback, ...)\n" 1387680274dSAarushi Mehta " --aio=MODE set AIO mode (native, io_uring or threads)\n" 139b3838a40SPeter Lieven " --discard=MODE set discard mode (ignore, unmap)\n" 1406883de6cSAndrey Korolyov " --detect-zeroes=MODE set detect-zeroes mode (off, on, unmap)\n" 14177c9aaefSDaniel P. Berrange " --image-opts treat FILE as a full set of image options\n" 142b033cd86SPaolo Bonzini "\n" 143f5048cb7SEric Blake QEMU_HELP_BOTTOM "\n" 14468b96f15SEric Blake , name, name, NBD_DEFAULT_PORT, "DEVICE"); 1457a5ca864Sbellard } 1467a5ca864Sbellard 1477a5ca864Sbellard static void version(const char *name) 1487a5ca864Sbellard { 1497a5ca864Sbellard printf( 1507e563bfbSThomas Huth "%s " QEMU_FULL_VERSION "\n" 1517a5ca864Sbellard "Written by Anthony Liguori.\n" 1527a5ca864Sbellard "\n" 153be377133SEric Blake QEMU_COPYRIGHT "\n" 1547a5ca864Sbellard "This is free software; see the source for copying conditions. There is NO\n" 1557a5ca864Sbellard "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n" 156315bc7aaSths , name); 1577a5ca864Sbellard } 1587a5ca864Sbellard 159029a88c9SEric Blake #ifdef CONFIG_POSIX 160cbc20bfbSStefan Hajnoczi /* 161cbc20bfbSStefan Hajnoczi * The client thread uses SIGTERM to interrupt the server. A signal 162cbc20bfbSStefan Hajnoczi * handler ensures that "qemu-nbd -v -c" exits with a nice status code. 163cbc20bfbSStefan Hajnoczi */ 164cbc20bfbSStefan Hajnoczi void qemu_system_killed(int signum, pid_t pid) 165bb345110SPaolo Bonzini { 166d73415a3SStefan Hajnoczi qatomic_cmpxchg(&state, RUNNING, TERMINATE); 167a61c6782SPaolo Bonzini qemu_notify_event(); 168bb345110SPaolo Bonzini } 169029a88c9SEric Blake #endif /* CONFIG_POSIX */ 170537b41f5SPaolo Bonzini 17168b96f15SEric Blake static int qemu_nbd_client_list(SocketAddress *saddr, QCryptoTLSCreds *tls, 17268b96f15SEric Blake const char *hostname) 17368b96f15SEric Blake { 17468b96f15SEric Blake int ret = EXIT_FAILURE; 17568b96f15SEric Blake int rc; 17668b96f15SEric Blake Error *err = NULL; 17768b96f15SEric Blake QIOChannelSocket *sioc; 17868b96f15SEric Blake NBDExportInfo *list; 17968b96f15SEric Blake int i, j; 18068b96f15SEric Blake 18168b96f15SEric Blake sioc = qio_channel_socket_new(); 18268b96f15SEric Blake if (qio_channel_socket_connect_sync(sioc, saddr, &err) < 0) { 18368b96f15SEric Blake error_report_err(err); 184992809bfSAlex Chen goto out; 18568b96f15SEric Blake } 18668b96f15SEric Blake rc = nbd_receive_export_list(QIO_CHANNEL(sioc), tls, hostname, &list, 18768b96f15SEric Blake &err); 18868b96f15SEric Blake if (rc < 0) { 18968b96f15SEric Blake if (err) { 19068b96f15SEric Blake error_report_err(err); 19168b96f15SEric Blake } 19268b96f15SEric Blake goto out; 19368b96f15SEric Blake } 19468b96f15SEric Blake printf("exports available: %d\n", rc); 19568b96f15SEric Blake for (i = 0; i < rc; i++) { 19668b96f15SEric Blake printf(" export: '%s'\n", list[i].name); 19768b96f15SEric Blake if (list[i].description && *list[i].description) { 19868b96f15SEric Blake printf(" description: %s\n", list[i].description); 19968b96f15SEric Blake } 20068b96f15SEric Blake if (list[i].flags & NBD_FLAG_HAS_FLAGS) { 201c4e2aff8SMax Reitz static const char *const flag_names[] = { 202c4e2aff8SMax Reitz [NBD_FLAG_READ_ONLY_BIT] = "readonly", 203c4e2aff8SMax Reitz [NBD_FLAG_SEND_FLUSH_BIT] = "flush", 204c4e2aff8SMax Reitz [NBD_FLAG_SEND_FUA_BIT] = "fua", 205c4e2aff8SMax Reitz [NBD_FLAG_ROTATIONAL_BIT] = "rotational", 206c4e2aff8SMax Reitz [NBD_FLAG_SEND_TRIM_BIT] = "trim", 207c4e2aff8SMax Reitz [NBD_FLAG_SEND_WRITE_ZEROES_BIT] = "zeroes", 208c4e2aff8SMax Reitz [NBD_FLAG_SEND_DF_BIT] = "df", 209c4e2aff8SMax Reitz [NBD_FLAG_CAN_MULTI_CONN_BIT] = "multi", 210c4e2aff8SMax Reitz [NBD_FLAG_SEND_RESIZE_BIT] = "resize", 211c4e2aff8SMax Reitz [NBD_FLAG_SEND_CACHE_BIT] = "cache", 2120a479545SEric Blake [NBD_FLAG_SEND_FAST_ZERO_BIT] = "fast-zero", 213c4e2aff8SMax Reitz }; 214c4e2aff8SMax Reitz 21568b96f15SEric Blake printf(" size: %" PRIu64 "\n", list[i].size); 21668b96f15SEric Blake printf(" flags: 0x%x (", list[i].flags); 217c4e2aff8SMax Reitz for (size_t bit = 0; bit < ARRAY_SIZE(flag_names); bit++) { 218c4e2aff8SMax Reitz if (flag_names[bit] && (list[i].flags & (1 << bit))) { 219c4e2aff8SMax Reitz printf(" %s", flag_names[bit]); 22068b96f15SEric Blake } 22168b96f15SEric Blake } 22268b96f15SEric Blake printf(" )\n"); 22368b96f15SEric Blake } 22468b96f15SEric Blake if (list[i].min_block) { 22568b96f15SEric Blake printf(" min block: %u\n", list[i].min_block); 22668b96f15SEric Blake printf(" opt block: %u\n", list[i].opt_block); 22768b96f15SEric Blake printf(" max block: %u\n", list[i].max_block); 22868b96f15SEric Blake } 22968b96f15SEric Blake if (list[i].n_contexts) { 23068b96f15SEric Blake printf(" available meta contexts: %d\n", list[i].n_contexts); 23168b96f15SEric Blake for (j = 0; j < list[i].n_contexts; j++) { 23268b96f15SEric Blake printf(" %s\n", list[i].contexts[j]); 23368b96f15SEric Blake } 23468b96f15SEric Blake } 23568b96f15SEric Blake } 23668b96f15SEric Blake nbd_free_export_list(list, rc); 23768b96f15SEric Blake 23868b96f15SEric Blake ret = EXIT_SUCCESS; 23968b96f15SEric Blake out: 24068b96f15SEric Blake object_unref(OBJECT(sioc)); 24168b96f15SEric Blake return ret; 24268b96f15SEric Blake } 24368b96f15SEric Blake 24468b96f15SEric Blake 2453c1fa35dSEric Blake #if HAVE_NBD_DEVICE 246a517e88bSPaolo Bonzini static void *show_parts(void *arg) 247cd831bd7Sths { 248a6ac2313SPaolo Bonzini char *device = arg; 249cd831bd7Sths int nbd; 250cd831bd7Sths 251cd831bd7Sths /* linux just needs an open() to trigger 252cd831bd7Sths * the partition table update 253cd831bd7Sths * but remember to load the module with max_part != 0 : 254cd831bd7Sths * modprobe nbd max_part=63 255cd831bd7Sths */ 256cd831bd7Sths nbd = open(device, O_RDWR); 257fc19f8a0SPaolo Bonzini if (nbd >= 0) { 258cd831bd7Sths close(nbd); 259cd831bd7Sths } 260a517e88bSPaolo Bonzini return NULL; 261a517e88bSPaolo Bonzini } 262a517e88bSPaolo Bonzini 263a517e88bSPaolo Bonzini static void *nbd_client_thread(void *arg) 264a517e88bSPaolo Bonzini { 265a6ac2313SPaolo Bonzini char *device = arg; 2666dc1667dSEric Blake NBDExportInfo info = { .request_sizes = false, .name = g_strdup("") }; 267d0d6ff58SDaniel P. Berrange QIOChannelSocket *sioc; 268af74b550SAlex Chen int fd = -1; 269af74b550SAlex Chen int ret = EXIT_FAILURE; 270a517e88bSPaolo Bonzini pthread_t show_parts_thread; 2711ce52846SMax Reitz Error *local_error = NULL; 272a517e88bSPaolo Bonzini 273d0d6ff58SDaniel P. Berrange sioc = qio_channel_socket_new(); 274d0d6ff58SDaniel P. Berrange if (qio_channel_socket_connect_sync(sioc, 275d0d6ff58SDaniel P. Berrange saddr, 276d0d6ff58SDaniel P. Berrange &local_error) < 0) { 27748bec07eSDaniel P. Berrange error_report_err(local_error); 278a517e88bSPaolo Bonzini goto out; 279a517e88bSPaolo Bonzini } 280a517e88bSPaolo Bonzini 281af74b550SAlex Chen if (nbd_receive_negotiate(NULL, QIO_CHANNEL(sioc), 282af74b550SAlex Chen NULL, NULL, NULL, &info, &local_error) < 0) { 2831ce52846SMax Reitz if (local_error) { 28478288671SMarkus Armbruster error_report_err(local_error); 2851ce52846SMax Reitz } 286af74b550SAlex Chen goto out; 287a517e88bSPaolo Bonzini } 288a517e88bSPaolo Bonzini 289a6ac2313SPaolo Bonzini fd = open(device, O_RDWR); 290fc19f8a0SPaolo Bonzini if (fd < 0) { 291a6ac2313SPaolo Bonzini /* Linux-only, we can use %m in printf. */ 292b9884681SMarkus Armbruster error_report("Failed to open %s: %m", device); 293af74b550SAlex Chen goto out; 294a6ac2313SPaolo Bonzini } 295a6ac2313SPaolo Bonzini 296af74b550SAlex Chen if (nbd_init(fd, sioc, &info, &local_error) < 0) { 297be41c100SVladimir Sementsov-Ogievskiy error_report_err(local_error); 298af74b550SAlex Chen goto out; 299a517e88bSPaolo Bonzini } 300a517e88bSPaolo Bonzini 301a517e88bSPaolo Bonzini /* update partition table */ 302a6ac2313SPaolo Bonzini pthread_create(&show_parts_thread, NULL, show_parts, device); 303a517e88bSPaolo Bonzini 304c1f8fdc3SPaolo Bonzini if (verbose) { 305a517e88bSPaolo Bonzini fprintf(stderr, "NBD device %s is now connected to %s\n", 306a517e88bSPaolo Bonzini device, srcpath); 307c1f8fdc3SPaolo Bonzini } else { 308c1f8fdc3SPaolo Bonzini /* Close stderr so that the qemu-nbd process exits. */ 309c1f8fdc3SPaolo Bonzini dup2(STDOUT_FILENO, STDERR_FILENO); 310c1f8fdc3SPaolo Bonzini } 311a517e88bSPaolo Bonzini 312af74b550SAlex Chen if (nbd_client(fd) < 0) { 313af74b550SAlex Chen goto out; 314a517e88bSPaolo Bonzini } 315a517e88bSPaolo Bonzini 316af74b550SAlex Chen ret = EXIT_SUCCESS; 317af74b550SAlex Chen 318a517e88bSPaolo Bonzini out: 319af74b550SAlex Chen if (fd >= 0) { 320af74b550SAlex Chen close(fd); 321af74b550SAlex Chen } 322af74b550SAlex Chen object_unref(OBJECT(sioc)); 3236dc1667dSEric Blake g_free(info.name); 324a517e88bSPaolo Bonzini kill(getpid(), SIGTERM); 325af74b550SAlex Chen return (void *) (intptr_t) ret; 326cd831bd7Sths } 3273c1fa35dSEric Blake #endif /* HAVE_NBD_DEVICE */ 328cd831bd7Sths 329e4afbf4fSFam Zheng static int nbd_can_accept(void) 330a61c6782SPaolo Bonzini { 331df8ad9f1SEric Blake return state == RUNNING && nb_fds < shared; 332a61c6782SPaolo Bonzini } 333a61c6782SPaolo Bonzini 334d0d6ff58SDaniel P. Berrange static void nbd_update_server_watch(void); 335e4afbf4fSFam Zheng 3360c9390d9SEric Blake static void nbd_client_closed(NBDClient *client, bool negotiated) 337a61c6782SPaolo Bonzini { 338a61c6782SPaolo Bonzini nb_fds--; 3390c9390d9SEric Blake if (negotiated && nb_fds == 0 && !persistent && state == RUNNING) { 3407860a380SPaolo Bonzini state = TERMINATE; 3417860a380SPaolo Bonzini } 342d0d6ff58SDaniel P. Berrange nbd_update_server_watch(); 3437860a380SPaolo Bonzini nbd_client_put(client); 344a61c6782SPaolo Bonzini } 345a61c6782SPaolo Bonzini 346e4849c1dSDaniel P. Berrange static void nbd_accept(QIONetListener *listener, QIOChannelSocket *cioc, 347e4849c1dSDaniel P. Berrange gpointer opaque) 348a61c6782SPaolo Bonzini { 3497860a380SPaolo Bonzini if (state >= TERMINATE) { 350e4849c1dSDaniel P. Berrange return; 3517860a380SPaolo Bonzini } 3527860a380SPaolo Bonzini 353a61c6782SPaolo Bonzini nb_fds++; 354d0d6ff58SDaniel P. Berrange nbd_update_server_watch(); 355b25e12daSDaniel P. Berrange nbd_client_new(cioc, tlscreds, tlsauthz, nbd_client_closed); 356d0d6ff58SDaniel P. Berrange } 357d0d6ff58SDaniel P. Berrange 358d0d6ff58SDaniel P. Berrange static void nbd_update_server_watch(void) 359e4afbf4fSFam Zheng { 360e4afbf4fSFam Zheng if (nbd_can_accept()) { 361e4849c1dSDaniel P. Berrange qio_net_listener_set_client_func(server, nbd_accept, NULL, NULL); 362e4afbf4fSFam Zheng } else { 363e4849c1dSDaniel P. Berrange qio_net_listener_set_client_func(server, NULL, NULL, NULL); 364e4afbf4fSFam Zheng } 365e4afbf4fSFam Zheng } 366e4afbf4fSFam Zheng 36748bec07eSDaniel P. Berrange 368bd269ebcSMarkus Armbruster static SocketAddress *nbd_build_socket_address(const char *sockpath, 36948bec07eSDaniel P. Berrange const char *bindto, 37048bec07eSDaniel P. Berrange const char *port) 37148bec07eSDaniel P. Berrange { 372bd269ebcSMarkus Armbruster SocketAddress *saddr; 37348bec07eSDaniel P. Berrange 374bd269ebcSMarkus Armbruster saddr = g_new0(SocketAddress, 1); 37548bec07eSDaniel P. Berrange if (sockpath) { 376bd269ebcSMarkus Armbruster saddr->type = SOCKET_ADDRESS_TYPE_UNIX; 377bd269ebcSMarkus Armbruster saddr->u.q_unix.path = g_strdup(sockpath); 37848bec07eSDaniel P. Berrange } else { 3790399293eSEric Blake InetSocketAddress *inet; 380bd269ebcSMarkus Armbruster saddr->type = SOCKET_ADDRESS_TYPE_INET; 381bd269ebcSMarkus Armbruster inet = &saddr->u.inet; 3820399293eSEric Blake inet->host = g_strdup(bindto); 38348bec07eSDaniel P. Berrange if (port) { 3840399293eSEric Blake inet->port = g_strdup(port); 38548bec07eSDaniel P. Berrange } else { 3860399293eSEric Blake inet->port = g_strdup_printf("%d", NBD_DEFAULT_PORT); 38748bec07eSDaniel P. Berrange } 38848bec07eSDaniel P. Berrange } 38948bec07eSDaniel P. Berrange 39048bec07eSDaniel P. Berrange return saddr; 39148bec07eSDaniel P. Berrange } 39248bec07eSDaniel P. Berrange 39348bec07eSDaniel P. Berrange 39477c9aaefSDaniel P. Berrange static QemuOptsList file_opts = { 39577c9aaefSDaniel P. Berrange .name = "file", 39677c9aaefSDaniel P. Berrange .implied_opt_name = "file", 39777c9aaefSDaniel P. Berrange .head = QTAILQ_HEAD_INITIALIZER(file_opts.head), 39877c9aaefSDaniel P. Berrange .desc = { 39977c9aaefSDaniel P. Berrange /* no elements => accept any params */ 40077c9aaefSDaniel P. Berrange { /* end of list */ } 40177c9aaefSDaniel P. Berrange }, 40277c9aaefSDaniel P. Berrange }; 40377c9aaefSDaniel P. Berrange 4040ab3b337SDaniel P. Berrange static QemuOptsList qemu_object_opts = { 4050ab3b337SDaniel P. Berrange .name = "object", 4060ab3b337SDaniel P. Berrange .implied_opt_name = "qom-type", 4070ab3b337SDaniel P. Berrange .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head), 4080ab3b337SDaniel P. Berrange .desc = { 4090ab3b337SDaniel P. Berrange { } 4100ab3b337SDaniel P. Berrange }, 4110ab3b337SDaniel P. Berrange }; 4120ab3b337SDaniel P. Berrange 413495bf893SKevin Wolf static bool qemu_nbd_object_print_help(const char *type, QemuOpts *opts) 414495bf893SKevin Wolf { 415495bf893SKevin Wolf if (user_creatable_print_help(type, opts)) { 416495bf893SKevin Wolf exit(0); 417495bf893SKevin Wolf } 418495bf893SKevin Wolf return true; 419495bf893SKevin Wolf } 4200ab3b337SDaniel P. Berrange 421145614a1SDaniel P. Berrange 42268b96f15SEric Blake static QCryptoTLSCreds *nbd_get_tls_creds(const char *id, bool list, 42368b96f15SEric Blake Error **errp) 424145614a1SDaniel P. Berrange { 425145614a1SDaniel P. Berrange Object *obj; 426145614a1SDaniel P. Berrange QCryptoTLSCreds *creds; 427145614a1SDaniel P. Berrange 428145614a1SDaniel P. Berrange obj = object_resolve_path_component( 429145614a1SDaniel P. Berrange object_get_objects_root(), id); 430145614a1SDaniel P. Berrange if (!obj) { 431145614a1SDaniel P. Berrange error_setg(errp, "No TLS credentials with id '%s'", 432145614a1SDaniel P. Berrange id); 433145614a1SDaniel P. Berrange return NULL; 434145614a1SDaniel P. Berrange } 435145614a1SDaniel P. Berrange creds = (QCryptoTLSCreds *) 436145614a1SDaniel P. Berrange object_dynamic_cast(obj, TYPE_QCRYPTO_TLS_CREDS); 437145614a1SDaniel P. Berrange if (!creds) { 438145614a1SDaniel P. Berrange error_setg(errp, "Object with id '%s' is not TLS credentials", 439145614a1SDaniel P. Berrange id); 440145614a1SDaniel P. Berrange return NULL; 441145614a1SDaniel P. Berrange } 442145614a1SDaniel P. Berrange 44368b96f15SEric Blake if (list) { 44468b96f15SEric Blake if (creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) { 44568b96f15SEric Blake error_setg(errp, 44668b96f15SEric Blake "Expecting TLS credentials with a client endpoint"); 44768b96f15SEric Blake return NULL; 44868b96f15SEric Blake } 44968b96f15SEric Blake } else { 450145614a1SDaniel P. Berrange if (creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) { 451145614a1SDaniel P. Berrange error_setg(errp, 452145614a1SDaniel P. Berrange "Expecting TLS credentials with a server endpoint"); 453145614a1SDaniel P. Berrange return NULL; 454145614a1SDaniel P. Berrange } 45568b96f15SEric Blake } 456145614a1SDaniel P. Berrange object_ref(obj); 457145614a1SDaniel P. Berrange return creds; 458145614a1SDaniel P. Berrange } 459145614a1SDaniel P. Berrange 460a721f53bSRichard W.M. Jones static void setup_address_and_port(const char **address, const char **port) 461a721f53bSRichard W.M. Jones { 462a721f53bSRichard W.M. Jones if (*address == NULL) { 463a721f53bSRichard W.M. Jones *address = "0.0.0.0"; 464a721f53bSRichard W.M. Jones } 465a721f53bSRichard W.M. Jones 466a721f53bSRichard W.M. Jones if (*port == NULL) { 467a721f53bSRichard W.M. Jones *port = stringify(NBD_DEFAULT_PORT); 468a721f53bSRichard W.M. Jones } 469a721f53bSRichard W.M. Jones } 470a721f53bSRichard W.M. Jones 471a721f53bSRichard W.M. Jones /* 472a721f53bSRichard W.M. Jones * Check socket parameters compatibility when socket activation is used. 473a721f53bSRichard W.M. Jones */ 474a721f53bSRichard W.M. Jones static const char *socket_activation_validate_opts(const char *device, 475a721f53bSRichard W.M. Jones const char *sockpath, 476a721f53bSRichard W.M. Jones const char *address, 47768b96f15SEric Blake const char *port, 47868b96f15SEric Blake bool list) 479a721f53bSRichard W.M. Jones { 480a721f53bSRichard W.M. Jones if (device != NULL) { 481a721f53bSRichard W.M. Jones return "NBD device can't be set when using socket activation"; 482a721f53bSRichard W.M. Jones } 483a721f53bSRichard W.M. Jones 484a721f53bSRichard W.M. Jones if (sockpath != NULL) { 485a721f53bSRichard W.M. Jones return "Unix socket can't be set when using socket activation"; 486a721f53bSRichard W.M. Jones } 487a721f53bSRichard W.M. Jones 488a721f53bSRichard W.M. Jones if (address != NULL) { 489a721f53bSRichard W.M. Jones return "The interface can't be set when using socket activation"; 490a721f53bSRichard W.M. Jones } 491a721f53bSRichard W.M. Jones 492a721f53bSRichard W.M. Jones if (port != NULL) { 493a721f53bSRichard W.M. Jones return "TCP port number can't be set when using socket activation"; 494a721f53bSRichard W.M. Jones } 495a721f53bSRichard W.M. Jones 49668b96f15SEric Blake if (list) { 49768b96f15SEric Blake return "List mode is incompatible with socket activation"; 49868b96f15SEric Blake } 49968b96f15SEric Blake 500a721f53bSRichard W.M. Jones return NULL; 501a721f53bSRichard W.M. Jones } 502145614a1SDaniel P. Berrange 503b3b5299dSKevin Wolf static void qemu_nbd_shutdown(void) 504b3b5299dSKevin Wolf { 505b3b5299dSKevin Wolf job_cancel_sync_all(); 5061895b977SSergio Lopez blk_exp_close_all(); 507b3b5299dSKevin Wolf bdrv_close_all(); 508b3b5299dSKevin Wolf } 509b3b5299dSKevin Wolf 5107a5ca864Sbellard int main(int argc, char **argv) 5117a5ca864Sbellard { 51226f54e9aSMarkus Armbruster BlockBackend *blk; 5137a5ca864Sbellard BlockDriverState *bs; 5149d26dfcbSEric Blake uint64_t dev_offset = 0; 515dbb38caaSEric Blake bool readonly = false; 516cd831bd7Sths bool disconnect = false; 517a721f53bSRichard W.M. Jones const char *bindto = NULL; 51848bec07eSDaniel P. Berrange const char *port = NULL; 51948bec07eSDaniel P. Berrange char *sockpath = NULL; 520a6ac2313SPaolo Bonzini char *device = NULL; 5218c116b0eSWenchao Xia QemuOpts *sn_opts = NULL; 5228c116b0eSWenchao Xia const char *sn_id_or_name = NULL; 523dbc7b014SEric Blake const char *sopt = "hVb:o:p:rsnc:dvk:e:f:tl:x:T:D:AB:L"; 5247a5ca864Sbellard struct option lopt[] = { 525aa6e546cSDaniel P. Berrange { "help", no_argument, NULL, 'h' }, 526aa6e546cSDaniel P. Berrange { "version", no_argument, NULL, 'V' }, 527aa6e546cSDaniel P. Berrange { "bind", required_argument, NULL, 'b' }, 528aa6e546cSDaniel P. Berrange { "port", required_argument, NULL, 'p' }, 529aa6e546cSDaniel P. Berrange { "socket", required_argument, NULL, 'k' }, 530aa6e546cSDaniel P. Berrange { "offset", required_argument, NULL, 'o' }, 531aa6e546cSDaniel P. Berrange { "read-only", no_argument, NULL, 'r' }, 532dbc7b014SEric Blake { "allocation-depth", no_argument, NULL, 'A' }, 533636192c4SEric Blake { "bitmap", required_argument, NULL, 'B' }, 534aa6e546cSDaniel P. Berrange { "connect", required_argument, NULL, 'c' }, 535aa6e546cSDaniel P. Berrange { "disconnect", no_argument, NULL, 'd' }, 53668b96f15SEric Blake { "list", no_argument, NULL, 'L' }, 537aa6e546cSDaniel P. Berrange { "snapshot", no_argument, NULL, 's' }, 538aa6e546cSDaniel P. Berrange { "load-snapshot", required_argument, NULL, 'l' }, 539aa6e546cSDaniel P. Berrange { "nocache", no_argument, NULL, 'n' }, 540aa6e546cSDaniel P. Berrange { "cache", required_argument, NULL, QEMU_NBD_OPT_CACHE }, 541aa6e546cSDaniel P. Berrange { "aio", required_argument, NULL, QEMU_NBD_OPT_AIO }, 542aa6e546cSDaniel P. Berrange { "discard", required_argument, NULL, QEMU_NBD_OPT_DISCARD }, 543aa6e546cSDaniel P. Berrange { "detect-zeroes", required_argument, NULL, 544aa6e546cSDaniel P. Berrange QEMU_NBD_OPT_DETECT_ZEROES }, 545aa6e546cSDaniel P. Berrange { "shared", required_argument, NULL, 'e' }, 546aa6e546cSDaniel P. Berrange { "format", required_argument, NULL, 'f' }, 547aa6e546cSDaniel P. Berrange { "persistent", no_argument, NULL, 't' }, 548aa6e546cSDaniel P. Berrange { "verbose", no_argument, NULL, 'v' }, 549aa6e546cSDaniel P. Berrange { "object", required_argument, NULL, QEMU_NBD_OPT_OBJECT }, 550aa6e546cSDaniel P. Berrange { "export-name", required_argument, NULL, 'x' }, 551b1a75b33SEric Blake { "description", required_argument, NULL, 'D' }, 552aa6e546cSDaniel P. Berrange { "tls-creds", required_argument, NULL, QEMU_NBD_OPT_TLSCREDS }, 553b25e12daSDaniel P. Berrange { "tls-authz", required_argument, NULL, QEMU_NBD_OPT_TLSAUTHZ }, 554aa6e546cSDaniel P. Berrange { "image-opts", no_argument, NULL, QEMU_NBD_OPT_IMAGE_OPTS }, 55539ca463eSDenis V. Lunev { "trace", required_argument, NULL, 'T' }, 556ffb31e1dSMax Reitz { "fork", no_argument, NULL, QEMU_NBD_OPT_FORK }, 557637bc5a5SMax Reitz { "pid-file", required_argument, NULL, QEMU_NBD_OPT_PID_FILE }, 558660f11beSBlue Swirl { NULL, 0, NULL, 0 } 5597a5ca864Sbellard }; 5607a5ca864Sbellard int ch; 5617a5ca864Sbellard int opt_ind = 0; 562f5edb014SNaphtali Sprei int flags = BDRV_O_RDWR; 5634fbec260SMax Reitz int ret = 0; 56439a5235cSPaolo Bonzini bool seen_cache = false; 565ded9d2d5SPaolo Bonzini bool seen_discard = false; 56639a5235cSPaolo Bonzini bool seen_aio = false; 567a517e88bSPaolo Bonzini pthread_t client_thread; 568e6b63677SDaniel P. Berrange const char *fmt = NULL; 56934b5d2c6SMax Reitz Error *local_err = NULL; 570b3838a40SPeter Lieven BlockdevDetectZeroesOptions detect_zeroes = BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF; 5714fbec260SMax Reitz QDict *options = NULL; 57268b96f15SEric Blake const char *export_name = NULL; /* defaults to "" later for server mode */ 573b1a75b33SEric Blake const char *export_description = NULL; 574cbad81ceSEric Blake strList *bitmaps = NULL; 575dbc7b014SEric Blake bool alloc_depth = false; 576145614a1SDaniel P. Berrange const char *tlscredsid = NULL; 57777c9aaefSDaniel P. Berrange bool imageOpts = false; 5786effd5bfSKevin Wolf bool writethrough = true; 579ffb31e1dSMax Reitz bool fork_process = false; 58068b96f15SEric Blake bool list = false; 581ffb31e1dSMax Reitz int old_stderr = -1; 582a721f53bSRichard W.M. Jones unsigned socket_activation; 583637bc5a5SMax Reitz const char *pid_file_name = NULL; 58400917172SKevin Wolf BlockExportOptions *export_opts; 5857a5ca864Sbellard 586029a88c9SEric Blake #ifdef CONFIG_POSIX 587cbc20bfbSStefan Hajnoczi os_setup_early_signal_handling(); 588cbc20bfbSStefan Hajnoczi os_setup_signal_handling(); 589041e32b8SMax Reitz #endif 590041e32b8SMax Reitz 59198c5d2e7SDaniel P. Berrangé socket_init(); 592f5852efaSChristophe Fergeau error_init(argv[0]); 593fe4db84dSDaniel P. Berrange module_call_init(MODULE_INIT_TRACE); 594e8f2d272SEduardo Habkost qcrypto_init(&error_fatal); 595c2297088SDaniel P. Berrange 5960ab3b337SDaniel P. Berrange module_call_init(MODULE_INIT_QOM); 5970ab3b337SDaniel P. Berrange qemu_add_opts(&qemu_object_opts); 59839ca463eSDenis V. Lunev qemu_add_opts(&qemu_trace_opts); 59910f5bff6SFam Zheng qemu_init_exec_dir(argv[0]); 600bb345110SPaolo Bonzini 6017a5ca864Sbellard while ((ch = getopt_long(argc, argv, sopt, lopt, &opt_ind)) != -1) { 6027a5ca864Sbellard switch (ch) { 6037a5ca864Sbellard case 's': 6042f726488Sths flags |= BDRV_O_SNAPSHOT; 6052f726488Sths break; 6062f726488Sths case 'n': 60739a5235cSPaolo Bonzini optarg = (char *) "none"; 60839a5235cSPaolo Bonzini /* fallthrough */ 60939a5235cSPaolo Bonzini case QEMU_NBD_OPT_CACHE: 61039a5235cSPaolo Bonzini if (seen_cache) { 61185b01e09SMarkus Armbruster error_report("-n and --cache can only be specified once"); 61285b01e09SMarkus Armbruster exit(EXIT_FAILURE); 61339a5235cSPaolo Bonzini } 61439a5235cSPaolo Bonzini seen_cache = true; 6156effd5bfSKevin Wolf if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) == -1) { 61685b01e09SMarkus Armbruster error_report("Invalid cache mode `%s'", optarg); 61785b01e09SMarkus Armbruster exit(EXIT_FAILURE); 61839a5235cSPaolo Bonzini } 6197a5ca864Sbellard break; 62039a5235cSPaolo Bonzini case QEMU_NBD_OPT_AIO: 62139a5235cSPaolo Bonzini if (seen_aio) { 62285b01e09SMarkus Armbruster error_report("--aio can only be specified once"); 62385b01e09SMarkus Armbruster exit(EXIT_FAILURE); 62439a5235cSPaolo Bonzini } 62539a5235cSPaolo Bonzini seen_aio = true; 6267680274dSAarushi Mehta if (bdrv_parse_aio(optarg, &flags) < 0) { 6277680274dSAarushi Mehta error_report("Invalid aio mode '%s'", optarg); 62885b01e09SMarkus Armbruster exit(EXIT_FAILURE); 62939a5235cSPaolo Bonzini } 63039a5235cSPaolo Bonzini break; 631ded9d2d5SPaolo Bonzini case QEMU_NBD_OPT_DISCARD: 632ded9d2d5SPaolo Bonzini if (seen_discard) { 63385b01e09SMarkus Armbruster error_report("--discard can only be specified once"); 63485b01e09SMarkus Armbruster exit(EXIT_FAILURE); 635ded9d2d5SPaolo Bonzini } 636ded9d2d5SPaolo Bonzini seen_discard = true; 637ded9d2d5SPaolo Bonzini if (bdrv_parse_discard_flags(optarg, &flags) == -1) { 63885b01e09SMarkus Armbruster error_report("Invalid discard mode `%s'", optarg); 63985b01e09SMarkus Armbruster exit(EXIT_FAILURE); 640ded9d2d5SPaolo Bonzini } 641ded9d2d5SPaolo Bonzini break; 642b3838a40SPeter Lieven case QEMU_NBD_OPT_DETECT_ZEROES: 643b3838a40SPeter Lieven detect_zeroes = 644f7abe0ecSMarc-André Lureau qapi_enum_parse(&BlockdevDetectZeroesOptions_lookup, 645b3838a40SPeter Lieven optarg, 646b3838a40SPeter Lieven BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF, 647b3838a40SPeter Lieven &local_err); 648b3838a40SPeter Lieven if (local_err) { 649c29b77f9SMarkus Armbruster error_reportf_err(local_err, 650c29b77f9SMarkus Armbruster "Failed to parse detect_zeroes mode: "); 65185b01e09SMarkus Armbruster exit(EXIT_FAILURE); 652b3838a40SPeter Lieven } 653b3838a40SPeter Lieven if (detect_zeroes == BLOCKDEV_DETECT_ZEROES_OPTIONS_UNMAP && 654b3838a40SPeter Lieven !(flags & BDRV_O_UNMAP)) { 65585b01e09SMarkus Armbruster error_report("setting detect-zeroes to unmap is not allowed " 656b3838a40SPeter Lieven "without setting discard operation to unmap"); 65785b01e09SMarkus Armbruster exit(EXIT_FAILURE); 658b3838a40SPeter Lieven } 659b3838a40SPeter Lieven break; 6607a5ca864Sbellard case 'b': 6617a5ca864Sbellard bindto = optarg; 6627a5ca864Sbellard break; 6637a5ca864Sbellard case 'p': 66448bec07eSDaniel P. Berrange port = optarg; 6657a5ca864Sbellard break; 6667a5ca864Sbellard case 'o': 66743b51011SEric Blake if (qemu_strtou64(optarg, NULL, 0, &dev_offset) < 0) { 66843b51011SEric Blake error_report("Invalid offset '%s'", optarg); 66985b01e09SMarkus Armbruster exit(EXIT_FAILURE); 6707a5ca864Sbellard } 6717a5ca864Sbellard break; 6728c116b0eSWenchao Xia case 'l': 6738c116b0eSWenchao Xia if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { 67470b94331SMarkus Armbruster sn_opts = qemu_opts_parse_noisily(&internal_snapshot_opts, 67570b94331SMarkus Armbruster optarg, false); 6768c116b0eSWenchao Xia if (!sn_opts) { 67785b01e09SMarkus Armbruster error_report("Failed in parsing snapshot param `%s'", 6788c116b0eSWenchao Xia optarg); 67985b01e09SMarkus Armbruster exit(EXIT_FAILURE); 6808c116b0eSWenchao Xia } 6818c116b0eSWenchao Xia } else { 6828c116b0eSWenchao Xia sn_id_or_name = optarg; 6838c116b0eSWenchao Xia } 6848c116b0eSWenchao Xia /* fall through */ 6857a5ca864Sbellard case 'r': 686dbb38caaSEric Blake readonly = true; 68707108b29SNaphtali Sprei flags &= ~BDRV_O_RDWR; 6887a5ca864Sbellard break; 689dbc7b014SEric Blake case 'A': 690dbc7b014SEric Blake alloc_depth = true; 691dbc7b014SEric Blake break; 692636192c4SEric Blake case 'B': 693cbad81ceSEric Blake QAPI_LIST_PREPEND(bitmaps, g_strdup(optarg)); 694636192c4SEric Blake break; 695cd831bd7Sths case 'k': 696b32f6c28SPaolo Bonzini sockpath = optarg; 697713cc671SPeter Lieven if (sockpath[0] != '/') { 6989af9e0feSMarkus Armbruster error_report("socket path must be absolute"); 69985b01e09SMarkus Armbruster exit(EXIT_FAILURE); 700713cc671SPeter Lieven } 701cd831bd7Sths break; 702cd831bd7Sths case 'd': 703cd831bd7Sths disconnect = true; 704cd831bd7Sths break; 705cd831bd7Sths case 'c': 706cd831bd7Sths device = optarg; 707cd831bd7Sths break; 7083b05a8e9Sths case 'e': 70943b51011SEric Blake if (qemu_strtoi(optarg, NULL, 0, &shared) < 0 || 71043b51011SEric Blake shared < 1) { 71185b01e09SMarkus Armbruster error_report("Invalid shared device number '%s'", optarg); 71285b01e09SMarkus Armbruster exit(EXIT_FAILURE); 7133b05a8e9Sths } 7143b05a8e9Sths break; 715e6b63677SDaniel P. Berrange case 'f': 716e6b63677SDaniel P. Berrange fmt = optarg; 717e6b63677SDaniel P. Berrange break; 71875818250Sths case 't': 71975818250Sths persistent = 1; 72075818250Sths break; 7213d4b2f9cSDaniel P. Berrange case 'x': 7223d4b2f9cSDaniel P. Berrange export_name = optarg; 72393676c88SEric Blake if (strlen(export_name) > NBD_MAX_STRING_SIZE) { 72493676c88SEric Blake error_report("export name '%s' too long", export_name); 72593676c88SEric Blake exit(EXIT_FAILURE); 72693676c88SEric Blake } 7273d4b2f9cSDaniel P. Berrange break; 728b1a75b33SEric Blake case 'D': 729b1a75b33SEric Blake export_description = optarg; 73093676c88SEric Blake if (strlen(export_description) > NBD_MAX_STRING_SIZE) { 73193676c88SEric Blake error_report("export description '%s' too long", 73293676c88SEric Blake export_description); 73393676c88SEric Blake exit(EXIT_FAILURE); 73493676c88SEric Blake } 735b1a75b33SEric Blake break; 7367a5ca864Sbellard case 'v': 7377a5ca864Sbellard verbose = 1; 7387a5ca864Sbellard break; 7397a5ca864Sbellard case 'V': 7407a5ca864Sbellard version(argv[0]); 7417a5ca864Sbellard exit(0); 7427a5ca864Sbellard break; 7437a5ca864Sbellard case 'h': 7447a5ca864Sbellard usage(argv[0]); 7457a5ca864Sbellard exit(0); 7467a5ca864Sbellard break; 7477a5ca864Sbellard case '?': 74885b01e09SMarkus Armbruster error_report("Try `%s --help' for more information.", argv[0]); 74985b01e09SMarkus Armbruster exit(EXIT_FAILURE); 7500ab3b337SDaniel P. Berrange case QEMU_NBD_OPT_OBJECT: { 7510ab3b337SDaniel P. Berrange QemuOpts *opts; 7520ab3b337SDaniel P. Berrange opts = qemu_opts_parse_noisily(&qemu_object_opts, 7530ab3b337SDaniel P. Berrange optarg, true); 7540ab3b337SDaniel P. Berrange if (!opts) { 7550ab3b337SDaniel P. Berrange exit(EXIT_FAILURE); 7560ab3b337SDaniel P. Berrange } 7570ab3b337SDaniel P. Berrange } break; 758145614a1SDaniel P. Berrange case QEMU_NBD_OPT_TLSCREDS: 759145614a1SDaniel P. Berrange tlscredsid = optarg; 760145614a1SDaniel P. Berrange break; 76177c9aaefSDaniel P. Berrange case QEMU_NBD_OPT_IMAGE_OPTS: 76277c9aaefSDaniel P. Berrange imageOpts = true; 76377c9aaefSDaniel P. Berrange break; 76439ca463eSDenis V. Lunev case 'T': 76592eecfffSPaolo Bonzini trace_opt_parse(optarg); 76639ca463eSDenis V. Lunev break; 767b25e12daSDaniel P. Berrange case QEMU_NBD_OPT_TLSAUTHZ: 768b25e12daSDaniel P. Berrange tlsauthz = optarg; 769b25e12daSDaniel P. Berrange break; 770ffb31e1dSMax Reitz case QEMU_NBD_OPT_FORK: 771ffb31e1dSMax Reitz fork_process = true; 772ffb31e1dSMax Reitz break; 77368b96f15SEric Blake case 'L': 77468b96f15SEric Blake list = true; 77568b96f15SEric Blake break; 776637bc5a5SMax Reitz case QEMU_NBD_OPT_PID_FILE: 777637bc5a5SMax Reitz pid_file_name = optarg; 778637bc5a5SMax Reitz break; 7797a5ca864Sbellard } 7807a5ca864Sbellard } 7817a5ca864Sbellard 78268b96f15SEric Blake if (list) { 78368b96f15SEric Blake if (argc != optind) { 78468b96f15SEric Blake error_report("List mode is incompatible with a file name"); 78568b96f15SEric Blake exit(EXIT_FAILURE); 78668b96f15SEric Blake } 7870bc16997SEric Blake if (export_name || export_description || dev_offset || 788cbad81ceSEric Blake device || disconnect || fmt || sn_id_or_name || bitmaps || 789dbc7b014SEric Blake alloc_depth || seen_aio || seen_discard || seen_cache) { 79068b96f15SEric Blake error_report("List mode is incompatible with per-device settings"); 79168b96f15SEric Blake exit(EXIT_FAILURE); 79268b96f15SEric Blake } 79368b96f15SEric Blake if (fork_process) { 79468b96f15SEric Blake error_report("List mode is incompatible with forking"); 79568b96f15SEric Blake exit(EXIT_FAILURE); 79668b96f15SEric Blake } 79768b96f15SEric Blake } else if ((argc - optind) != 1) { 798433672b0SMarkus Armbruster error_report("Invalid number of arguments"); 799433672b0SMarkus Armbruster error_printf("Try `%s --help' for more information.\n", argv[0]); 80085b01e09SMarkus Armbruster exit(EXIT_FAILURE); 80168b96f15SEric Blake } else if (!export_name) { 80268b96f15SEric Blake export_name = ""; 8037a5ca864Sbellard } 8047a5ca864Sbellard 8057e1e0c11SMarkus Armbruster qemu_opts_foreach(&qemu_object_opts, 8060ab3b337SDaniel P. Berrange user_creatable_add_opts_foreach, 807495bf893SKevin Wolf qemu_nbd_object_print_help, &error_fatal); 8080ab3b337SDaniel P. Berrange 80939ca463eSDenis V. Lunev if (!trace_init_backends()) { 81039ca463eSDenis V. Lunev exit(1); 81139ca463eSDenis V. Lunev } 81292eecfffSPaolo Bonzini trace_init_file(); 81339ca463eSDenis V. Lunev qemu_set_log(LOG_TRACE); 81439ca463eSDenis V. Lunev 815a721f53bSRichard W.M. Jones socket_activation = check_socket_activation(); 816a721f53bSRichard W.M. Jones if (socket_activation == 0) { 817a721f53bSRichard W.M. Jones setup_address_and_port(&bindto, &port); 818a721f53bSRichard W.M. Jones } else { 819a721f53bSRichard W.M. Jones /* Using socket activation - check user didn't use -p etc. */ 820a721f53bSRichard W.M. Jones const char *err_msg = socket_activation_validate_opts(device, sockpath, 82168b96f15SEric Blake bindto, port, 82268b96f15SEric Blake list); 823a721f53bSRichard W.M. Jones if (err_msg != NULL) { 824a721f53bSRichard W.M. Jones error_report("%s", err_msg); 825a721f53bSRichard W.M. Jones exit(EXIT_FAILURE); 826a721f53bSRichard W.M. Jones } 82753fabd4bSPaolo Bonzini 82853fabd4bSPaolo Bonzini /* qemu-nbd can only listen on a single socket. */ 82953fabd4bSPaolo Bonzini if (socket_activation > 1) { 83053fabd4bSPaolo Bonzini error_report("qemu-nbd does not support socket activation with %s > 1", 83153fabd4bSPaolo Bonzini "LISTEN_FDS"); 83253fabd4bSPaolo Bonzini exit(EXIT_FAILURE); 83353fabd4bSPaolo Bonzini } 834a721f53bSRichard W.M. Jones } 835a721f53bSRichard W.M. Jones 836145614a1SDaniel P. Berrange if (tlscredsid) { 837145614a1SDaniel P. Berrange if (sockpath) { 838145614a1SDaniel P. Berrange error_report("TLS is only supported with IPv4/IPv6"); 839145614a1SDaniel P. Berrange exit(EXIT_FAILURE); 840145614a1SDaniel P. Berrange } 841145614a1SDaniel P. Berrange if (device) { 842145614a1SDaniel P. Berrange error_report("TLS is not supported with a host device"); 843145614a1SDaniel P. Berrange exit(EXIT_FAILURE); 844145614a1SDaniel P. Berrange } 845b25e12daSDaniel P. Berrange if (tlsauthz && list) { 846b25e12daSDaniel P. Berrange error_report("TLS authorization is incompatible with export list"); 847b25e12daSDaniel P. Berrange exit(EXIT_FAILURE); 848b25e12daSDaniel P. Berrange } 84968b96f15SEric Blake tlscreds = nbd_get_tls_creds(tlscredsid, list, &local_err); 850145614a1SDaniel P. Berrange if (local_err) { 8515217f188SMarkus Armbruster error_reportf_err(local_err, "Failed to get TLS creds: "); 852145614a1SDaniel P. Berrange exit(EXIT_FAILURE); 853145614a1SDaniel P. Berrange } 854b25e12daSDaniel P. Berrange } else { 855b25e12daSDaniel P. Berrange if (tlsauthz) { 856b25e12daSDaniel P. Berrange error_report("--tls-authz is not permitted without --tls-creds"); 857b25e12daSDaniel P. Berrange exit(EXIT_FAILURE); 858b25e12daSDaniel P. Berrange } 859145614a1SDaniel P. Berrange } 860145614a1SDaniel P. Berrange 86168b96f15SEric Blake if (list) { 86268b96f15SEric Blake saddr = nbd_build_socket_address(sockpath, bindto, port); 86368b96f15SEric Blake return qemu_nbd_client_list(saddr, tlscreds, bindto); 86468b96f15SEric Blake } 86568b96f15SEric Blake 8663c1fa35dSEric Blake #if !HAVE_NBD_DEVICE 8673c1fa35dSEric Blake if (disconnect || device) { 8683c1fa35dSEric Blake error_report("Kernel /dev/nbdN support not available"); 8693c1fa35dSEric Blake exit(EXIT_FAILURE); 8703c1fa35dSEric Blake } 8713c1fa35dSEric Blake #else /* HAVE_NBD_DEVICE */ 872cd831bd7Sths if (disconnect) { 873d0d6ff58SDaniel P. Berrange int nbdfd = open(argv[optind], O_RDWR); 874d0d6ff58SDaniel P. Berrange if (nbdfd < 0) { 87585b01e09SMarkus Armbruster error_report("Cannot open %s: %s", argv[optind], 87685b01e09SMarkus Armbruster strerror(errno)); 87785b01e09SMarkus Armbruster exit(EXIT_FAILURE); 878fc19f8a0SPaolo Bonzini } 879d0d6ff58SDaniel P. Berrange nbd_disconnect(nbdfd); 880cd831bd7Sths 881d0d6ff58SDaniel P. Berrange close(nbdfd); 882cd831bd7Sths 883cd831bd7Sths printf("%s disconnected\n", argv[optind]); 884cd831bd7Sths 885cd831bd7Sths return 0; 886cd831bd7Sths } 8873c1fa35dSEric Blake #endif 888cd831bd7Sths 889ffb31e1dSMax Reitz if ((device && !verbose) || fork_process) { 890eb705985SDaniel P. Berrangé #ifndef WIN32 891c1f8fdc3SPaolo Bonzini int stderr_fd[2]; 892c1f8fdc3SPaolo Bonzini pid_t pid; 893c1f8fdc3SPaolo Bonzini int ret; 894c1f8fdc3SPaolo Bonzini 895fc19f8a0SPaolo Bonzini if (qemu_pipe(stderr_fd) < 0) { 89685b01e09SMarkus Armbruster error_report("Error setting up communication pipe: %s", 89785b01e09SMarkus Armbruster strerror(errno)); 89885b01e09SMarkus Armbruster exit(EXIT_FAILURE); 899c1f8fdc3SPaolo Bonzini } 900c1f8fdc3SPaolo Bonzini 901c1f8fdc3SPaolo Bonzini /* Now daemonize, but keep a communication channel open to 902c1f8fdc3SPaolo Bonzini * print errors and exit with the proper status code. 903c1f8fdc3SPaolo Bonzini */ 904c1f8fdc3SPaolo Bonzini pid = fork(); 90570d4739eSMax Reitz if (pid < 0) { 90685b01e09SMarkus Armbruster error_report("Failed to fork: %s", strerror(errno)); 90785b01e09SMarkus Armbruster exit(EXIT_FAILURE); 90870d4739eSMax Reitz } else if (pid == 0) { 909c1f8fdc3SPaolo Bonzini close(stderr_fd[0]); 910e6df58a5SMax Reitz 9110eaf453eSRaphael Pour /* Remember parent's stderr if we will be restoring it. */ 9120eaf453eSRaphael Pour if (fork_process) { 913e6df58a5SMax Reitz old_stderr = dup(STDERR_FILENO); 9140eaf453eSRaphael Pour } 9150eaf453eSRaphael Pour 9169faf31b6SMichael Tokarev ret = qemu_daemon(1, 0); 917c1f8fdc3SPaolo Bonzini 918c1f8fdc3SPaolo Bonzini /* Temporarily redirect stderr to the parent's pipe... */ 919c1f8fdc3SPaolo Bonzini dup2(stderr_fd[1], STDERR_FILENO); 920fc19f8a0SPaolo Bonzini if (ret < 0) { 92185b01e09SMarkus Armbruster error_report("Failed to daemonize: %s", strerror(errno)); 92285b01e09SMarkus Armbruster exit(EXIT_FAILURE); 923c1f8fdc3SPaolo Bonzini } 924c1f8fdc3SPaolo Bonzini 925c1f8fdc3SPaolo Bonzini /* ... close the descriptor we inherited and go on. */ 926c1f8fdc3SPaolo Bonzini close(stderr_fd[1]); 927c1f8fdc3SPaolo Bonzini } else { 928c1f8fdc3SPaolo Bonzini bool errors = false; 929c1f8fdc3SPaolo Bonzini char *buf; 930c1f8fdc3SPaolo Bonzini 931c1f8fdc3SPaolo Bonzini /* In the parent. Print error messages from the child until 932c1f8fdc3SPaolo Bonzini * it closes the pipe. 933c1f8fdc3SPaolo Bonzini */ 934c1f8fdc3SPaolo Bonzini close(stderr_fd[1]); 935c1f8fdc3SPaolo Bonzini buf = g_malloc(1024); 936c1f8fdc3SPaolo Bonzini while ((ret = read(stderr_fd[0], buf, 1024)) > 0) { 937c1f8fdc3SPaolo Bonzini errors = true; 938c1f8fdc3SPaolo Bonzini ret = qemu_write_full(STDERR_FILENO, buf, ret); 939fc19f8a0SPaolo Bonzini if (ret < 0) { 940c1f8fdc3SPaolo Bonzini exit(EXIT_FAILURE); 941c1f8fdc3SPaolo Bonzini } 942c1f8fdc3SPaolo Bonzini } 943fc19f8a0SPaolo Bonzini if (ret < 0) { 94485b01e09SMarkus Armbruster error_report("Cannot read from daemon: %s", 94585b01e09SMarkus Armbruster strerror(errno)); 94685b01e09SMarkus Armbruster exit(EXIT_FAILURE); 947c1f8fdc3SPaolo Bonzini } 948c1f8fdc3SPaolo Bonzini 949c1f8fdc3SPaolo Bonzini /* Usually the daemon should not print any message. 950c1f8fdc3SPaolo Bonzini * Exit with zero status in that case. 951c1f8fdc3SPaolo Bonzini */ 952c1f8fdc3SPaolo Bonzini exit(errors); 953c1f8fdc3SPaolo Bonzini } 954eb705985SDaniel P. Berrangé #else /* WIN32 */ 955eb705985SDaniel P. Berrangé error_report("Unable to fork into background on Windows hosts"); 956eb705985SDaniel P. Berrangé exit(EXIT_FAILURE); 957eb705985SDaniel P. Berrangé #endif /* WIN32 */ 958c1f8fdc3SPaolo Bonzini } 959c1f8fdc3SPaolo Bonzini 960a6ac2313SPaolo Bonzini if (device != NULL && sockpath == NULL) { 961b32f6c28SPaolo Bonzini sockpath = g_malloc(128); 962b32f6c28SPaolo Bonzini snprintf(sockpath, 128, SOCKET_PATH, basename(device)); 963cd831bd7Sths } 964cd831bd7Sths 965e4849c1dSDaniel P. Berrange server = qio_net_listener_new(); 966a721f53bSRichard W.M. Jones if (socket_activation == 0) { 967*582d4210SEric Blake int backlog; 968*582d4210SEric Blake 969*582d4210SEric Blake if (persistent) { 970*582d4210SEric Blake backlog = SOMAXCONN; 971*582d4210SEric Blake } else { 972*582d4210SEric Blake backlog = MIN(shared, SOMAXCONN); 973*582d4210SEric Blake } 97448bec07eSDaniel P. Berrange saddr = nbd_build_socket_address(sockpath, bindto, port); 975*582d4210SEric Blake if (qio_net_listener_open_sync(server, saddr, backlog, 976*582d4210SEric Blake &local_err) < 0) { 977e4849c1dSDaniel P. Berrange object_unref(OBJECT(server)); 978a721f53bSRichard W.M. Jones error_report_err(local_err); 979e4849c1dSDaniel P. Berrange exit(EXIT_FAILURE); 980a721f53bSRichard W.M. Jones } 981a721f53bSRichard W.M. Jones } else { 982e4849c1dSDaniel P. Berrange size_t i; 983a721f53bSRichard W.M. Jones /* See comment in check_socket_activation above. */ 984e4849c1dSDaniel P. Berrange for (i = 0; i < socket_activation; i++) { 985e4849c1dSDaniel P. Berrange QIOChannelSocket *sioc; 986e4849c1dSDaniel P. Berrange sioc = qio_channel_socket_new_fd(FIRST_SOCKET_ACTIVATION_FD + i, 987a721f53bSRichard W.M. Jones &local_err); 988e4849c1dSDaniel P. Berrange if (sioc == NULL) { 989e4849c1dSDaniel P. Berrange object_unref(OBJECT(server)); 9905217f188SMarkus Armbruster error_reportf_err(local_err, 9915217f188SMarkus Armbruster "Failed to use socket activation: "); 992a721f53bSRichard W.M. Jones exit(EXIT_FAILURE); 993a721f53bSRichard W.M. Jones } 994e4849c1dSDaniel P. Berrange qio_net_listener_add(server, sioc); 995e4849c1dSDaniel P. Berrange object_unref(OBJECT(sioc)); 996e4849c1dSDaniel P. Berrange } 997a721f53bSRichard W.M. Jones } 99848bec07eSDaniel P. Berrange 9992f78e491SChrysostomos Nanakos if (qemu_init_main_loop(&local_err)) { 1000565f65d2SMarkus Armbruster error_report_err(local_err); 10012f78e491SChrysostomos Nanakos exit(EXIT_FAILURE); 10022f78e491SChrysostomos Nanakos } 1003802ddc37SPaolo Bonzini bdrv_init(); 1004b3b5299dSKevin Wolf atexit(qemu_nbd_shutdown); 1005802ddc37SPaolo Bonzini 100677c9aaefSDaniel P. Berrange srcpath = argv[optind]; 100777c9aaefSDaniel P. Berrange if (imageOpts) { 100877c9aaefSDaniel P. Berrange QemuOpts *opts; 100977c9aaefSDaniel P. Berrange if (fmt) { 101077c9aaefSDaniel P. Berrange error_report("--image-opts and -f are mutually exclusive"); 101177c9aaefSDaniel P. Berrange exit(EXIT_FAILURE); 101277c9aaefSDaniel P. Berrange } 101377c9aaefSDaniel P. Berrange opts = qemu_opts_parse_noisily(&file_opts, srcpath, true); 101477c9aaefSDaniel P. Berrange if (!opts) { 101577c9aaefSDaniel P. Berrange qemu_opts_reset(&file_opts); 101677c9aaefSDaniel P. Berrange exit(EXIT_FAILURE); 101777c9aaefSDaniel P. Berrange } 101877c9aaefSDaniel P. Berrange options = qemu_opts_to_qdict(opts, NULL); 101977c9aaefSDaniel P. Berrange qemu_opts_reset(&file_opts); 1020efaa7c4eSMax Reitz blk = blk_new_open(NULL, NULL, options, flags, &local_err); 102177c9aaefSDaniel P. Berrange } else { 1022e6b63677SDaniel P. Berrange if (fmt) { 10234fbec260SMax Reitz options = qdict_new(); 102446f5ac20SEric Blake qdict_put_str(options, "driver", fmt); 1025e6b63677SDaniel P. Berrange } 1026efaa7c4eSMax Reitz blk = blk_new_open(srcpath, NULL, options, flags, &local_err); 102777c9aaefSDaniel P. Berrange } 102877c9aaefSDaniel P. Berrange 10294fbec260SMax Reitz if (!blk) { 1030c29b77f9SMarkus Armbruster error_reportf_err(local_err, "Failed to blk_new_open '%s': ", 1031c29b77f9SMarkus Armbruster argv[optind]); 103285b01e09SMarkus Armbruster exit(EXIT_FAILURE); 1033802ddc37SPaolo Bonzini } 10344fbec260SMax Reitz bs = blk_bs(blk); 1035802ddc37SPaolo Bonzini 1036b57e4de0SKevin Wolf if (dev_offset) { 1037b57e4de0SKevin Wolf QDict *raw_opts = qdict_new(); 1038b57e4de0SKevin Wolf qdict_put_str(raw_opts, "driver", "raw"); 1039b57e4de0SKevin Wolf qdict_put_str(raw_opts, "file", bs->node_name); 1040b57e4de0SKevin Wolf qdict_put_int(raw_opts, "offset", dev_offset); 1041b57e4de0SKevin Wolf bs = bdrv_open(NULL, NULL, raw_opts, flags, &error_fatal); 1042b57e4de0SKevin Wolf blk_remove_bs(blk); 1043b57e4de0SKevin Wolf blk_insert_bs(blk, bs, &error_fatal); 1044b57e4de0SKevin Wolf bdrv_unref(bs); 1045b57e4de0SKevin Wolf } 1046b57e4de0SKevin Wolf 10476effd5bfSKevin Wolf blk_set_enable_write_cache(blk, !writethrough); 10486effd5bfSKevin Wolf 10498c116b0eSWenchao Xia if (sn_opts) { 10508c116b0eSWenchao Xia ret = bdrv_snapshot_load_tmp(bs, 10518c116b0eSWenchao Xia qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), 10528c116b0eSWenchao Xia qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), 10538c116b0eSWenchao Xia &local_err); 10548c116b0eSWenchao Xia } else if (sn_id_or_name) { 10558c116b0eSWenchao Xia ret = bdrv_snapshot_load_tmp_by_id_or_name(bs, sn_id_or_name, 10568c116b0eSWenchao Xia &local_err); 10578c116b0eSWenchao Xia } 10588c116b0eSWenchao Xia if (ret < 0) { 1059c29b77f9SMarkus Armbruster error_reportf_err(local_err, "Failed to load snapshot: "); 106085b01e09SMarkus Armbruster exit(EXIT_FAILURE); 10618c116b0eSWenchao Xia } 10628c116b0eSWenchao Xia 1063b3838a40SPeter Lieven bs->detect_zeroes = detect_zeroes; 1064802ddc37SPaolo Bonzini 106500917172SKevin Wolf nbd_server_is_qemu_nbd(true); 106600917172SKevin Wolf 106700917172SKevin Wolf export_opts = g_new(BlockExportOptions, 1); 106800917172SKevin Wolf *export_opts = (BlockExportOptions) { 106900917172SKevin Wolf .type = BLOCK_EXPORT_TYPE_NBD, 1070d53be9ceSKevin Wolf .id = g_strdup("qemu-nbd-export"), 1071b6076afcSKevin Wolf .node_name = g_strdup(bdrv_get_node_name(bs)), 107200917172SKevin Wolf .has_writethrough = true, 107300917172SKevin Wolf .writethrough = writethrough, 107430dbc81dSKevin Wolf .has_writable = true, 107530dbc81dSKevin Wolf .writable = !readonly, 107600917172SKevin Wolf .u.nbd = { 107700917172SKevin Wolf .has_name = true, 107800917172SKevin Wolf .name = g_strdup(export_name), 107900917172SKevin Wolf .has_description = !!export_description, 108000917172SKevin Wolf .description = g_strdup(export_description), 1081cbad81ceSEric Blake .has_bitmaps = !!bitmaps, 1082cbad81ceSEric Blake .bitmaps = bitmaps, 1083dbc7b014SEric Blake .has_allocation_depth = alloc_depth, 1084dbc7b014SEric Blake .allocation_depth = alloc_depth, 108500917172SKevin Wolf }, 108600917172SKevin Wolf }; 108700917172SKevin Wolf blk_exp_add(export_opts, &error_fatal); 108800917172SKevin Wolf qapi_free_BlockExportOptions(export_opts); 10893b05a8e9Sths 1090f1ef5555SPaolo Bonzini if (device) { 10913c1fa35dSEric Blake #if HAVE_NBD_DEVICE 1092f1ef5555SPaolo Bonzini int ret; 1093f1ef5555SPaolo Bonzini 1094a6ac2313SPaolo Bonzini ret = pthread_create(&client_thread, NULL, nbd_client_thread, device); 1095f1ef5555SPaolo Bonzini if (ret != 0) { 109685b01e09SMarkus Armbruster error_report("Failed to create client thread: %s", strerror(ret)); 109785b01e09SMarkus Armbruster exit(EXIT_FAILURE); 1098f1ef5555SPaolo Bonzini } 10993c1fa35dSEric Blake #endif 1100f1ef5555SPaolo Bonzini } else { 1101f1ef5555SPaolo Bonzini /* Shut up GCC warnings. */ 1102f1ef5555SPaolo Bonzini memset(&client_thread, 0, sizeof(client_thread)); 1103f1ef5555SPaolo Bonzini } 1104f1ef5555SPaolo Bonzini 1105d0d6ff58SDaniel P. Berrange nbd_update_server_watch(); 11067a5ca864Sbellard 1107637bc5a5SMax Reitz if (pid_file_name) { 1108637bc5a5SMax Reitz qemu_write_pidfile(pid_file_name, &error_fatal); 1109637bc5a5SMax Reitz } 1110637bc5a5SMax Reitz 11119faf31b6SMichael Tokarev /* now when the initialization is (almost) complete, chdir("/") 11129faf31b6SMichael Tokarev * to free any busy filesystems */ 11139faf31b6SMichael Tokarev if (chdir("/") < 0) { 111485b01e09SMarkus Armbruster error_report("Could not chdir to root directory: %s", 111585b01e09SMarkus Armbruster strerror(errno)); 111685b01e09SMarkus Armbruster exit(EXIT_FAILURE); 11179faf31b6SMichael Tokarev } 11189faf31b6SMichael Tokarev 1119ffb31e1dSMax Reitz if (fork_process) { 1120ffb31e1dSMax Reitz dup2(old_stderr, STDERR_FILENO); 1121ffb31e1dSMax Reitz close(old_stderr); 1122ffb31e1dSMax Reitz } 1123ffb31e1dSMax Reitz 11247860a380SPaolo Bonzini state = RUNNING; 11253b05a8e9Sths do { 1126a61c6782SPaolo Bonzini main_loop_wait(false); 11277860a380SPaolo Bonzini if (state == TERMINATE) { 1128bc4ee65bSKevin Wolf blk_exp_close_all(); 1129d794f7f3SKevin Wolf state = TERMINATED; 11307860a380SPaolo Bonzini } 11317860a380SPaolo Bonzini } while (state != TERMINATED); 11322c8d9f06SPaolo Bonzini 113326f54e9aSMarkus Armbruster blk_unref(blk); 1134b32f6c28SPaolo Bonzini if (sockpath) { 1135b32f6c28SPaolo Bonzini unlink(sockpath); 1136b32f6c28SPaolo Bonzini } 11377a5ca864Sbellard 11388c116b0eSWenchao Xia qemu_opts_del(sn_opts); 11398c116b0eSWenchao Xia 1140a517e88bSPaolo Bonzini if (device) { 1141a517e88bSPaolo Bonzini void *ret; 1142a517e88bSPaolo Bonzini pthread_join(client_thread, &ret); 1143a517e88bSPaolo Bonzini exit(ret != NULL); 1144a517e88bSPaolo Bonzini } else { 1145a517e88bSPaolo Bonzini exit(EXIT_SUCCESS); 1146a517e88bSPaolo Bonzini } 11477a5ca864Sbellard } 1148