ths | cd831bd | 2008-07-03 10:23:51 +0000 | [diff] [blame] | 1 | /* |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 2 | * Copyright (C) 2005 Anthony Liguori <anthony@codemonkey.ws> |
| 3 | * |
| 4 | * Network Block Device |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; under version 2 of the License. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
Blue Swirl | 8167ee8 | 2009-07-16 20:47:01 +0000 | [diff] [blame] | 16 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 17 | */ |
| 18 | |
Peter Maydell | d38ea87 | 2016-01-29 17:50:05 +0000 | [diff] [blame] | 19 | #include "qemu/osdep.h" |
Eric Blake | c2a3d7d | 2017-07-21 08:50:47 -0500 | [diff] [blame] | 20 | #include <getopt.h> |
| 21 | #include <libgen.h> |
| 22 | #include <pthread.h> |
| 23 | |
Markus Armbruster | a8d2532 | 2019-05-23 16:35:08 +0200 | [diff] [blame] | 24 | #include "qemu-common.h" |
Markus Armbruster | da34e65 | 2016-03-14 09:01:28 +0100 | [diff] [blame] | 25 | #include "qapi/error.h" |
Veronia Bahaa | f348b6d | 2016-03-20 19:16:19 +0200 | [diff] [blame] | 26 | #include "qemu/cutils.h" |
Markus Armbruster | 26f54e9 | 2014-10-07 13:59:04 +0200 | [diff] [blame] | 27 | #include "sysemu/block-backend.h" |
Peter Lieven | b3838a4 | 2014-08-13 19:20:18 +0200 | [diff] [blame] | 28 | #include "block/block_int.h" |
Paolo Bonzini | 737e150 | 2012-12-17 18:19:44 +0100 | [diff] [blame] | 29 | #include "block/nbd.h" |
Alex Bligh | 6a1751b | 2013-08-21 16:02:47 +0100 | [diff] [blame] | 30 | #include "qemu/main-loop.h" |
Markus Armbruster | 0b8fa32 | 2019-05-23 16:35:07 +0200 | [diff] [blame] | 31 | #include "qemu/module.h" |
Markus Armbruster | 922a01a | 2018-02-01 12:18:46 +0100 | [diff] [blame] | 32 | #include "qemu/option.h" |
Paolo Bonzini | 537b41f | 2014-02-17 14:43:51 +0100 | [diff] [blame] | 33 | #include "qemu/error-report.h" |
Daniel P. Berrange | 0ab3b33 | 2016-02-10 18:41:00 +0000 | [diff] [blame] | 34 | #include "qemu/config-file.h" |
Paolo Bonzini | 58369e2 | 2016-03-15 17:22:36 +0100 | [diff] [blame] | 35 | #include "qemu/bswap.h" |
Denis V. Lunev | 39ca463 | 2016-06-17 17:44:12 +0300 | [diff] [blame] | 36 | #include "qemu/log.h" |
Paolo Bonzini | 53fabd4 | 2017-03-16 16:29:45 +0100 | [diff] [blame] | 37 | #include "qemu/systemd.h" |
Wenchao Xia | 8c116b0 | 2013-12-04 17:10:55 +0800 | [diff] [blame] | 38 | #include "block/snapshot.h" |
Markus Armbruster | 452fcdb | 2018-02-01 12:18:39 +0100 | [diff] [blame] | 39 | #include "qapi/qmp/qdict.h" |
Markus Armbruster | d49b683 | 2015-03-17 18:29:20 +0100 | [diff] [blame] | 40 | #include "qapi/qmp/qstring.h" |
Daniel P. Berrange | 0ab3b33 | 2016-02-10 18:41:00 +0000 | [diff] [blame] | 41 | #include "qom/object_interfaces.h" |
Daniel P. Berrange | d0d6ff5 | 2016-02-10 18:41:02 +0000 | [diff] [blame] | 42 | #include "io/channel-socket.h" |
Daniel P. Berrange | e4849c1 | 2017-12-18 10:16:43 +0000 | [diff] [blame] | 43 | #include "io/net-listener.h" |
Daniel P. Berrange | c229708 | 2016-04-06 12:12:06 +0100 | [diff] [blame] | 44 | #include "crypto/init.h" |
Denis V. Lunev | 39ca463 | 2016-06-17 17:44:12 +0300 | [diff] [blame] | 45 | #include "trace/control.h" |
Eric Blake | be37713 | 2017-07-21 08:50:46 -0500 | [diff] [blame] | 46 | #include "qemu-version.h" |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 47 | |
Eric Blake | 3c1fa35 | 2018-12-15 07:53:08 -0600 | [diff] [blame] | 48 | #ifdef __linux__ |
| 49 | #define HAVE_NBD_DEVICE 1 |
| 50 | #else |
| 51 | #define HAVE_NBD_DEVICE 0 |
| 52 | #endif |
| 53 | |
Peter Lieven | 713cc67 | 2014-08-13 19:20:19 +0200 | [diff] [blame] | 54 | #define SOCKET_PATH "/var/lock/qemu-nbd-%s" |
Daniel P. Berrange | fa8b7ce | 2016-02-17 10:10:21 +0000 | [diff] [blame] | 55 | #define QEMU_NBD_OPT_CACHE 256 |
| 56 | #define QEMU_NBD_OPT_AIO 257 |
| 57 | #define QEMU_NBD_OPT_DISCARD 258 |
| 58 | #define QEMU_NBD_OPT_DETECT_ZEROES 259 |
| 59 | #define QEMU_NBD_OPT_OBJECT 260 |
| 60 | #define QEMU_NBD_OPT_TLSCREDS 261 |
| 61 | #define QEMU_NBD_OPT_IMAGE_OPTS 262 |
Max Reitz | ffb31e1 | 2016-09-28 22:46:42 +0200 | [diff] [blame] | 62 | #define QEMU_NBD_OPT_FORK 263 |
Daniel P. Berrange | b25e12d | 2019-02-27 16:20:33 +0000 | [diff] [blame] | 63 | #define QEMU_NBD_OPT_TLSAUTHZ 264 |
Max Reitz | 637bc5a | 2019-05-08 23:18:16 +0200 | [diff] [blame] | 64 | #define QEMU_NBD_OPT_PID_FILE 265 |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 65 | |
Eric Blake | bd31c21 | 2016-05-06 10:26:42 -0600 | [diff] [blame] | 66 | #define MBR_SIZE 512 |
| 67 | |
Philippe Mathieu-Daudé | 9d97658 | 2019-01-11 17:35:19 +0100 | [diff] [blame] | 68 | static NBDExport *export; |
blueswir1 | b1d8e52 | 2008-10-26 13:43:07 +0000 | [diff] [blame] | 69 | static int verbose; |
Paolo Bonzini | a517e88 | 2011-11-04 15:51:21 +0100 | [diff] [blame] | 70 | static char *srcpath; |
Markus Armbruster | bd269eb | 2017-04-26 09:36:41 +0200 | [diff] [blame] | 71 | static SocketAddress *saddr; |
Paolo Bonzini | 7860a38 | 2012-09-18 13:31:56 +0200 | [diff] [blame] | 72 | static int persistent = 0; |
| 73 | static enum { RUNNING, TERMINATE, TERMINATING, TERMINATED } state; |
Paolo Bonzini | a61c678 | 2011-09-12 17:28:11 +0200 | [diff] [blame] | 74 | static int shared = 1; |
| 75 | static int nb_fds; |
Daniel P. Berrange | e4849c1 | 2017-12-18 10:16:43 +0000 | [diff] [blame] | 76 | static QIONetListener *server; |
Daniel P. Berrange | 145614a | 2016-02-10 18:41:13 +0000 | [diff] [blame] | 77 | static QCryptoTLSCreds *tlscreds; |
Daniel P. Berrange | b25e12d | 2019-02-27 16:20:33 +0000 | [diff] [blame] | 78 | static const char *tlsauthz; |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 79 | |
| 80 | static void usage(const char *name) |
| 81 | { |
Paolo Bonzini | b033cd8 | 2012-07-18 14:50:52 +0200 | [diff] [blame] | 82 | (printf) ( |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 83 | "Usage: %s [OPTIONS] FILE\n" |
Eric Blake | 68b96f1 | 2019-01-17 13:36:56 -0600 | [diff] [blame] | 84 | " or: %s -L [OPTIONS]\n" |
| 85 | "QEMU Disk Network Block Device Utility\n" |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 86 | "\n" |
Peter Lieven | 713cc67 | 2014-08-13 19:20:19 +0200 | [diff] [blame] | 87 | " -h, --help display this help and exit\n" |
| 88 | " -V, --version output version information and exit\n" |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 89 | "\n" |
Paolo Bonzini | b033cd8 | 2012-07-18 14:50:52 +0200 | [diff] [blame] | 90 | "Connection properties:\n" |
Peter Lieven | 713cc67 | 2014-08-13 19:20:19 +0200 | [diff] [blame] | 91 | " -p, --port=PORT port to listen on (default `%d')\n" |
| 92 | " -b, --bind=IFACE interface to bind to (default `0.0.0.0')\n" |
| 93 | " -k, --socket=PATH path to the unix socket\n" |
| 94 | " (default '"SOCKET_PATH"')\n" |
| 95 | " -e, --shared=NUM device can be shared by NUM clients (default '1')\n" |
| 96 | " -t, --persistent don't exit on the last connection\n" |
| 97 | " -v, --verbose display extra debugging information\n" |
Vladimir Sementsov-Ogievskiy | f5cd0bb | 2018-10-03 20:02:27 +0300 | [diff] [blame] | 98 | " -x, --export-name=NAME expose export by name (default is empty string)\n" |
| 99 | " -D, --description=TEXT export a human-readable description\n" |
Paolo Bonzini | b033cd8 | 2012-07-18 14:50:52 +0200 | [diff] [blame] | 100 | "\n" |
| 101 | "Exposing part of the image:\n" |
Peter Lieven | 713cc67 | 2014-08-13 19:20:19 +0200 | [diff] [blame] | 102 | " -o, --offset=OFFSET offset into the image\n" |
| 103 | " -P, --partition=NUM only expose partition NUM\n" |
Eric Blake | 636192c | 2019-01-11 13:47:20 -0600 | [diff] [blame] | 104 | " -B, --bitmap=NAME expose a persistent dirty bitmap\n" |
Paolo Bonzini | b033cd8 | 2012-07-18 14:50:52 +0200 | [diff] [blame] | 105 | "\n" |
Daniel P. Berrange | 0ab3b33 | 2016-02-10 18:41:00 +0000 | [diff] [blame] | 106 | "General purpose options:\n" |
Eric Blake | 68b96f1 | 2019-01-17 13:36:56 -0600 | [diff] [blame] | 107 | " -L, --list list exports available from another NBD server\n" |
Daniel P. Berrange | 0ab3b33 | 2016-02-10 18:41:00 +0000 | [diff] [blame] | 108 | " --object type,id=ID,... define an object such as 'secret' for providing\n" |
| 109 | " passwords and/or encryption keys\n" |
Eric Blake | f7812df | 2018-10-03 13:04:26 -0500 | [diff] [blame] | 110 | " --tls-creds=ID use id of an earlier --object to provide TLS\n" |
Daniel P. Berrange | b25e12d | 2019-02-27 16:20:33 +0000 | [diff] [blame] | 111 | " --tls-authz=ID use id of an earlier --object to provide\n" |
| 112 | " authorization\n" |
Denis V. Lunev | 39ca463 | 2016-06-17 17:44:12 +0300 | [diff] [blame] | 113 | " -T, --trace [[enable=]<pattern>][,events=<file>][,file=<file>]\n" |
| 114 | " specify tracing options\n" |
Max Reitz | ffb31e1 | 2016-09-28 22:46:42 +0200 | [diff] [blame] | 115 | " --fork fork off the server process and exit the parent\n" |
| 116 | " once the server is running\n" |
Max Reitz | 637bc5a | 2019-05-08 23:18:16 +0200 | [diff] [blame] | 117 | " --pid-file=PATH store the server's process ID in the given file\n" |
Eric Blake | 3c1fa35 | 2018-12-15 07:53:08 -0600 | [diff] [blame] | 118 | #if HAVE_NBD_DEVICE |
| 119 | "\n" |
Paolo Bonzini | b033cd8 | 2012-07-18 14:50:52 +0200 | [diff] [blame] | 120 | "Kernel NBD client support:\n" |
Peter Lieven | 713cc67 | 2014-08-13 19:20:19 +0200 | [diff] [blame] | 121 | " -c, --connect=DEV connect FILE to the local NBD device DEV\n" |
| 122 | " -d, --disconnect disconnect the specified device\n" |
Paolo Bonzini | b033cd8 | 2012-07-18 14:50:52 +0200 | [diff] [blame] | 123 | #endif |
| 124 | "\n" |
| 125 | "Block device options:\n" |
Peter Lieven | 713cc67 | 2014-08-13 19:20:19 +0200 | [diff] [blame] | 126 | " -f, --format=FORMAT set image format (raw, qcow2, ...)\n" |
| 127 | " -r, --read-only export read-only\n" |
| 128 | " -s, --snapshot use FILE as an external snapshot, create a temporary\n" |
| 129 | " file with backing_file=FILE, redirect the write to\n" |
| 130 | " the temporary one\n" |
Wenchao Xia | 8c116b0 | 2013-12-04 17:10:55 +0800 | [diff] [blame] | 131 | " -l, --load-snapshot=SNAPSHOT_PARAM\n" |
Peter Lieven | 713cc67 | 2014-08-13 19:20:19 +0200 | [diff] [blame] | 132 | " load an internal snapshot inside FILE and export it\n" |
| 133 | " as an read-only device, SNAPSHOT_PARAM format is\n" |
| 134 | " 'snapshot.id=[ID],snapshot.name=[NAME]', or\n" |
| 135 | " '[ID_OR_NAME]'\n" |
| 136 | " -n, --nocache disable host cache\n" |
| 137 | " --cache=MODE set cache mode (none, writeback, ...)\n" |
Aarushi Mehta | 7680274 | 2020-01-20 14:18:56 +0000 | [diff] [blame] | 138 | " --aio=MODE set AIO mode (native, io_uring or threads)\n" |
Peter Lieven | b3838a4 | 2014-08-13 19:20:18 +0200 | [diff] [blame] | 139 | " --discard=MODE set discard mode (ignore, unmap)\n" |
Andrey Korolyov | 6883de6 | 2015-07-31 22:12:54 +0300 | [diff] [blame] | 140 | " --detect-zeroes=MODE set detect-zeroes mode (off, on, unmap)\n" |
Daniel P. Berrange | 77c9aae | 2016-02-17 10:10:19 +0000 | [diff] [blame] | 141 | " --image-opts treat FILE as a full set of image options\n" |
Paolo Bonzini | b033cd8 | 2012-07-18 14:50:52 +0200 | [diff] [blame] | 142 | "\n" |
Eric Blake | f5048cb | 2017-08-03 11:33:53 -0500 | [diff] [blame] | 143 | QEMU_HELP_BOTTOM "\n" |
Eric Blake | 68b96f1 | 2019-01-17 13:36:56 -0600 | [diff] [blame] | 144 | , name, name, NBD_DEFAULT_PORT, "DEVICE"); |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 145 | } |
| 146 | |
| 147 | static void version(const char *name) |
| 148 | { |
| 149 | printf( |
Thomas Huth | 7e563bf | 2018-02-15 12:06:47 +0100 | [diff] [blame] | 150 | "%s " QEMU_FULL_VERSION "\n" |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 151 | "Written by Anthony Liguori.\n" |
| 152 | "\n" |
Eric Blake | be37713 | 2017-07-21 08:50:46 -0500 | [diff] [blame] | 153 | QEMU_COPYRIGHT "\n" |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 154 | "This is free software; see the source for copying conditions. There is NO\n" |
| 155 | "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n" |
ths | 315bc7a | 2008-07-18 18:06:23 +0000 | [diff] [blame] | 156 | , name); |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 157 | } |
| 158 | |
| 159 | struct partition_record |
| 160 | { |
| 161 | uint8_t bootable; |
| 162 | uint8_t start_head; |
| 163 | uint32_t start_cylinder; |
| 164 | uint8_t start_sector; |
| 165 | uint8_t system; |
| 166 | uint8_t end_head; |
| 167 | uint8_t end_cylinder; |
| 168 | uint8_t end_sector; |
| 169 | uint32_t start_sector_abs; |
| 170 | uint32_t nb_sectors_abs; |
| 171 | }; |
| 172 | |
| 173 | static void read_partition(uint8_t *p, struct partition_record *r) |
| 174 | { |
| 175 | r->bootable = p[0]; |
| 176 | r->start_head = p[1]; |
| 177 | r->start_cylinder = p[3] | ((p[2] << 2) & 0x0300); |
| 178 | r->start_sector = p[2] & 0x3f; |
| 179 | r->system = p[4]; |
| 180 | r->end_head = p[5]; |
| 181 | r->end_cylinder = p[7] | ((p[6] << 2) & 0x300); |
| 182 | r->end_sector = p[6] & 0x3f; |
Max Reitz | ac97393 | 2015-02-25 13:08:23 -0500 | [diff] [blame] | 183 | |
Peter Maydell | 773dce3 | 2016-06-10 16:00:36 +0100 | [diff] [blame] | 184 | r->start_sector_abs = ldl_le_p(p + 8); |
| 185 | r->nb_sectors_abs = ldl_le_p(p + 12); |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 186 | } |
| 187 | |
Max Reitz | 4c58e80 | 2014-11-18 12:21:19 +0100 | [diff] [blame] | 188 | static int find_partition(BlockBackend *blk, int partition, |
Eric Blake | 9d26dfc | 2019-01-17 13:36:43 -0600 | [diff] [blame] | 189 | uint64_t *offset, uint64_t *size) |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 190 | { |
| 191 | struct partition_record mbr[4]; |
Eric Blake | bd31c21 | 2016-05-06 10:26:42 -0600 | [diff] [blame] | 192 | uint8_t data[MBR_SIZE]; |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 193 | int i; |
| 194 | int ext_partnum = 4; |
Ryota Ozaki | cb7cf0e | 2010-05-03 06:50:25 +0900 | [diff] [blame] | 195 | int ret; |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 196 | |
Eric Blake | bd31c21 | 2016-05-06 10:26:42 -0600 | [diff] [blame] | 197 | ret = blk_pread(blk, 0, data, sizeof(data)); |
| 198 | if (ret < 0) { |
Markus Armbruster | a4699e5 | 2015-12-18 16:35:10 +0100 | [diff] [blame] | 199 | error_report("error while reading: %s", strerror(-ret)); |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 200 | exit(EXIT_FAILURE); |
Ryota Ozaki | cb7cf0e | 2010-05-03 06:50:25 +0900 | [diff] [blame] | 201 | } |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 202 | |
| 203 | if (data[510] != 0x55 || data[511] != 0xaa) { |
Paolo Bonzini | 185b433 | 2012-03-05 08:56:10 +0100 | [diff] [blame] | 204 | return -EINVAL; |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 205 | } |
| 206 | |
| 207 | for (i = 0; i < 4; i++) { |
| 208 | read_partition(&data[446 + 16 * i], &mbr[i]); |
| 209 | |
Max Reitz | 453b07b | 2015-02-25 13:08:15 -0500 | [diff] [blame] | 210 | if (!mbr[i].system || !mbr[i].nb_sectors_abs) { |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 211 | continue; |
Max Reitz | 453b07b | 2015-02-25 13:08:15 -0500 | [diff] [blame] | 212 | } |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 213 | |
| 214 | if (mbr[i].system == 0xF || mbr[i].system == 0x5) { |
| 215 | struct partition_record ext[4]; |
Eric Blake | bd31c21 | 2016-05-06 10:26:42 -0600 | [diff] [blame] | 216 | uint8_t data1[MBR_SIZE]; |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 217 | int j; |
| 218 | |
Eric Blake | bd31c21 | 2016-05-06 10:26:42 -0600 | [diff] [blame] | 219 | ret = blk_pread(blk, mbr[i].start_sector_abs * MBR_SIZE, |
| 220 | data1, sizeof(data1)); |
| 221 | if (ret < 0) { |
Markus Armbruster | a4699e5 | 2015-12-18 16:35:10 +0100 | [diff] [blame] | 222 | error_report("error while reading: %s", strerror(-ret)); |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 223 | exit(EXIT_FAILURE); |
Ryota Ozaki | cb7cf0e | 2010-05-03 06:50:25 +0900 | [diff] [blame] | 224 | } |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 225 | |
| 226 | for (j = 0; j < 4; j++) { |
| 227 | read_partition(&data1[446 + 16 * j], &ext[j]); |
Max Reitz | 453b07b | 2015-02-25 13:08:15 -0500 | [diff] [blame] | 228 | if (!ext[j].system || !ext[j].nb_sectors_abs) { |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 229 | continue; |
Max Reitz | 453b07b | 2015-02-25 13:08:15 -0500 | [diff] [blame] | 230 | } |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 231 | |
| 232 | if ((ext_partnum + j + 1) == partition) { |
| 233 | *offset = (uint64_t)ext[j].start_sector_abs << 9; |
| 234 | *size = (uint64_t)ext[j].nb_sectors_abs << 9; |
| 235 | return 0; |
| 236 | } |
| 237 | } |
| 238 | ext_partnum += 4; |
| 239 | } else if ((i + 1) == partition) { |
| 240 | *offset = (uint64_t)mbr[i].start_sector_abs << 9; |
| 241 | *size = (uint64_t)mbr[i].nb_sectors_abs << 9; |
| 242 | return 0; |
| 243 | } |
| 244 | } |
| 245 | |
Paolo Bonzini | 185b433 | 2012-03-05 08:56:10 +0100 | [diff] [blame] | 246 | return -ENOENT; |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 247 | } |
| 248 | |
Paolo Bonzini | bb34511 | 2011-11-04 15:51:19 +0100 | [diff] [blame] | 249 | static void termsig_handler(int signum) |
| 250 | { |
Pavel Butsykin | 23994a5 | 2016-04-14 13:20:15 +0300 | [diff] [blame] | 251 | atomic_cmpxchg(&state, RUNNING, TERMINATE); |
Paolo Bonzini | a61c678 | 2011-09-12 17:28:11 +0200 | [diff] [blame] | 252 | qemu_notify_event(); |
Paolo Bonzini | bb34511 | 2011-11-04 15:51:19 +0100 | [diff] [blame] | 253 | } |
| 254 | |
Paolo Bonzini | 537b41f | 2014-02-17 14:43:51 +0100 | [diff] [blame] | 255 | |
Eric Blake | 68b96f1 | 2019-01-17 13:36:56 -0600 | [diff] [blame] | 256 | static int qemu_nbd_client_list(SocketAddress *saddr, QCryptoTLSCreds *tls, |
| 257 | const char *hostname) |
| 258 | { |
| 259 | int ret = EXIT_FAILURE; |
| 260 | int rc; |
| 261 | Error *err = NULL; |
| 262 | QIOChannelSocket *sioc; |
| 263 | NBDExportInfo *list; |
| 264 | int i, j; |
| 265 | |
| 266 | sioc = qio_channel_socket_new(); |
| 267 | if (qio_channel_socket_connect_sync(sioc, saddr, &err) < 0) { |
| 268 | error_report_err(err); |
| 269 | return EXIT_FAILURE; |
| 270 | } |
| 271 | rc = nbd_receive_export_list(QIO_CHANNEL(sioc), tls, hostname, &list, |
| 272 | &err); |
| 273 | if (rc < 0) { |
| 274 | if (err) { |
| 275 | error_report_err(err); |
| 276 | } |
| 277 | goto out; |
| 278 | } |
| 279 | printf("exports available: %d\n", rc); |
| 280 | for (i = 0; i < rc; i++) { |
| 281 | printf(" export: '%s'\n", list[i].name); |
| 282 | if (list[i].description && *list[i].description) { |
| 283 | printf(" description: %s\n", list[i].description); |
| 284 | } |
| 285 | if (list[i].flags & NBD_FLAG_HAS_FLAGS) { |
Max Reitz | c4e2aff | 2019-04-05 21:16:35 +0200 | [diff] [blame] | 286 | static const char *const flag_names[] = { |
| 287 | [NBD_FLAG_READ_ONLY_BIT] = "readonly", |
| 288 | [NBD_FLAG_SEND_FLUSH_BIT] = "flush", |
| 289 | [NBD_FLAG_SEND_FUA_BIT] = "fua", |
| 290 | [NBD_FLAG_ROTATIONAL_BIT] = "rotational", |
| 291 | [NBD_FLAG_SEND_TRIM_BIT] = "trim", |
| 292 | [NBD_FLAG_SEND_WRITE_ZEROES_BIT] = "zeroes", |
| 293 | [NBD_FLAG_SEND_DF_BIT] = "df", |
| 294 | [NBD_FLAG_CAN_MULTI_CONN_BIT] = "multi", |
| 295 | [NBD_FLAG_SEND_RESIZE_BIT] = "resize", |
| 296 | [NBD_FLAG_SEND_CACHE_BIT] = "cache", |
Eric Blake | 0a47954 | 2019-08-23 09:37:23 -0500 | [diff] [blame] | 297 | [NBD_FLAG_SEND_FAST_ZERO_BIT] = "fast-zero", |
Max Reitz | c4e2aff | 2019-04-05 21:16:35 +0200 | [diff] [blame] | 298 | }; |
| 299 | |
Eric Blake | 68b96f1 | 2019-01-17 13:36:56 -0600 | [diff] [blame] | 300 | printf(" size: %" PRIu64 "\n", list[i].size); |
| 301 | printf(" flags: 0x%x (", list[i].flags); |
Max Reitz | c4e2aff | 2019-04-05 21:16:35 +0200 | [diff] [blame] | 302 | for (size_t bit = 0; bit < ARRAY_SIZE(flag_names); bit++) { |
| 303 | if (flag_names[bit] && (list[i].flags & (1 << bit))) { |
| 304 | printf(" %s", flag_names[bit]); |
| 305 | } |
Eric Blake | 68b96f1 | 2019-01-17 13:36:56 -0600 | [diff] [blame] | 306 | } |
| 307 | printf(" )\n"); |
| 308 | } |
| 309 | if (list[i].min_block) { |
| 310 | printf(" min block: %u\n", list[i].min_block); |
| 311 | printf(" opt block: %u\n", list[i].opt_block); |
| 312 | printf(" max block: %u\n", list[i].max_block); |
| 313 | } |
| 314 | if (list[i].n_contexts) { |
| 315 | printf(" available meta contexts: %d\n", list[i].n_contexts); |
| 316 | for (j = 0; j < list[i].n_contexts; j++) { |
| 317 | printf(" %s\n", list[i].contexts[j]); |
| 318 | } |
| 319 | } |
| 320 | } |
| 321 | nbd_free_export_list(list, rc); |
| 322 | |
| 323 | ret = EXIT_SUCCESS; |
| 324 | out: |
| 325 | object_unref(OBJECT(sioc)); |
| 326 | return ret; |
| 327 | } |
| 328 | |
| 329 | |
Eric Blake | 3c1fa35 | 2018-12-15 07:53:08 -0600 | [diff] [blame] | 330 | #if HAVE_NBD_DEVICE |
Paolo Bonzini | a517e88 | 2011-11-04 15:51:21 +0100 | [diff] [blame] | 331 | static void *show_parts(void *arg) |
ths | cd831bd | 2008-07-03 10:23:51 +0000 | [diff] [blame] | 332 | { |
Paolo Bonzini | a6ac231 | 2011-12-06 09:07:00 +0100 | [diff] [blame] | 333 | char *device = arg; |
Paolo Bonzini | a517e88 | 2011-11-04 15:51:21 +0100 | [diff] [blame] | 334 | int nbd; |
ths | cd831bd | 2008-07-03 10:23:51 +0000 | [diff] [blame] | 335 | |
Paolo Bonzini | a517e88 | 2011-11-04 15:51:21 +0100 | [diff] [blame] | 336 | /* linux just needs an open() to trigger |
| 337 | * the partition table update |
| 338 | * but remember to load the module with max_part != 0 : |
| 339 | * modprobe nbd max_part=63 |
| 340 | */ |
| 341 | nbd = open(device, O_RDWR); |
Paolo Bonzini | fc19f8a | 2012-03-07 11:05:34 +0100 | [diff] [blame] | 342 | if (nbd >= 0) { |
Paolo Bonzini | a517e88 | 2011-11-04 15:51:21 +0100 | [diff] [blame] | 343 | close(nbd); |
ths | cd831bd | 2008-07-03 10:23:51 +0000 | [diff] [blame] | 344 | } |
Paolo Bonzini | a517e88 | 2011-11-04 15:51:21 +0100 | [diff] [blame] | 345 | return NULL; |
| 346 | } |
| 347 | |
| 348 | static void *nbd_client_thread(void *arg) |
| 349 | { |
Paolo Bonzini | a6ac231 | 2011-12-06 09:07:00 +0100 | [diff] [blame] | 350 | char *device = arg; |
Eric Blake | 6dc1667 | 2019-01-17 13:36:46 -0600 | [diff] [blame] | 351 | NBDExportInfo info = { .request_sizes = false, .name = g_strdup("") }; |
Daniel P. Berrange | d0d6ff5 | 2016-02-10 18:41:02 +0000 | [diff] [blame] | 352 | QIOChannelSocket *sioc; |
| 353 | int fd; |
Paolo Bonzini | a517e88 | 2011-11-04 15:51:21 +0100 | [diff] [blame] | 354 | int ret; |
| 355 | pthread_t show_parts_thread; |
Max Reitz | 1ce5284 | 2015-01-26 21:02:59 -0500 | [diff] [blame] | 356 | Error *local_error = NULL; |
Paolo Bonzini | a517e88 | 2011-11-04 15:51:21 +0100 | [diff] [blame] | 357 | |
Daniel P. Berrange | d0d6ff5 | 2016-02-10 18:41:02 +0000 | [diff] [blame] | 358 | sioc = qio_channel_socket_new(); |
| 359 | if (qio_channel_socket_connect_sync(sioc, |
| 360 | saddr, |
| 361 | &local_error) < 0) { |
Daniel P. Berrange | 48bec07 | 2015-09-16 14:52:23 +0100 | [diff] [blame] | 362 | error_report_err(local_error); |
Stefan Hajnoczi | dc10e8b | 2012-01-05 13:16:07 +0000 | [diff] [blame] | 363 | goto out; |
| 364 | } |
Paolo Bonzini | a517e88 | 2011-11-04 15:51:21 +0100 | [diff] [blame] | 365 | |
Vladimir Sementsov-Ogievskiy | a8e2bb6 | 2019-06-18 14:43:21 +0300 | [diff] [blame] | 366 | ret = nbd_receive_negotiate(NULL, QIO_CHANNEL(sioc), |
Eric Blake | 004a89f | 2017-07-07 15:30:41 -0500 | [diff] [blame] | 367 | NULL, NULL, NULL, &info, &local_error); |
Paolo Bonzini | fc19f8a | 2012-03-07 11:05:34 +0100 | [diff] [blame] | 368 | if (ret < 0) { |
Max Reitz | 1ce5284 | 2015-01-26 21:02:59 -0500 | [diff] [blame] | 369 | if (local_error) { |
Markus Armbruster | 7828867 | 2015-12-18 16:35:07 +0100 | [diff] [blame] | 370 | error_report_err(local_error); |
Max Reitz | 1ce5284 | 2015-01-26 21:02:59 -0500 | [diff] [blame] | 371 | } |
Paolo Bonzini | 0c544d7 | 2014-03-14 18:10:54 +0100 | [diff] [blame] | 372 | goto out_socket; |
Paolo Bonzini | a517e88 | 2011-11-04 15:51:21 +0100 | [diff] [blame] | 373 | } |
| 374 | |
Paolo Bonzini | a6ac231 | 2011-12-06 09:07:00 +0100 | [diff] [blame] | 375 | fd = open(device, O_RDWR); |
Paolo Bonzini | fc19f8a | 2012-03-07 11:05:34 +0100 | [diff] [blame] | 376 | if (fd < 0) { |
Paolo Bonzini | a6ac231 | 2011-12-06 09:07:00 +0100 | [diff] [blame] | 377 | /* Linux-only, we can use %m in printf. */ |
Markus Armbruster | b988468 | 2015-12-18 16:35:18 +0100 | [diff] [blame] | 378 | error_report("Failed to open %s: %m", device); |
Paolo Bonzini | 0c544d7 | 2014-03-14 18:10:54 +0100 | [diff] [blame] | 379 | goto out_socket; |
Paolo Bonzini | a6ac231 | 2011-12-06 09:07:00 +0100 | [diff] [blame] | 380 | } |
| 381 | |
Eric Blake | 004a89f | 2017-07-07 15:30:41 -0500 | [diff] [blame] | 382 | ret = nbd_init(fd, sioc, &info, &local_error); |
Paolo Bonzini | fc19f8a | 2012-03-07 11:05:34 +0100 | [diff] [blame] | 383 | if (ret < 0) { |
Vladimir Sementsov-Ogievskiy | be41c10 | 2017-05-26 14:09:13 +0300 | [diff] [blame] | 384 | error_report_err(local_error); |
Paolo Bonzini | 0c544d7 | 2014-03-14 18:10:54 +0100 | [diff] [blame] | 385 | goto out_fd; |
Paolo Bonzini | a517e88 | 2011-11-04 15:51:21 +0100 | [diff] [blame] | 386 | } |
| 387 | |
| 388 | /* update partition table */ |
Paolo Bonzini | a6ac231 | 2011-12-06 09:07:00 +0100 | [diff] [blame] | 389 | pthread_create(&show_parts_thread, NULL, show_parts, device); |
Paolo Bonzini | a517e88 | 2011-11-04 15:51:21 +0100 | [diff] [blame] | 390 | |
Paolo Bonzini | c1f8fdc | 2011-11-04 15:51:22 +0100 | [diff] [blame] | 391 | if (verbose) { |
| 392 | fprintf(stderr, "NBD device %s is now connected to %s\n", |
| 393 | device, srcpath); |
| 394 | } else { |
| 395 | /* Close stderr so that the qemu-nbd process exits. */ |
| 396 | dup2(STDOUT_FILENO, STDERR_FILENO); |
| 397 | } |
Paolo Bonzini | a517e88 | 2011-11-04 15:51:21 +0100 | [diff] [blame] | 398 | |
| 399 | ret = nbd_client(fd); |
| 400 | if (ret) { |
Paolo Bonzini | 0c544d7 | 2014-03-14 18:10:54 +0100 | [diff] [blame] | 401 | goto out_fd; |
Paolo Bonzini | a517e88 | 2011-11-04 15:51:21 +0100 | [diff] [blame] | 402 | } |
| 403 | close(fd); |
Daniel P. Berrange | d0d6ff5 | 2016-02-10 18:41:02 +0000 | [diff] [blame] | 404 | object_unref(OBJECT(sioc)); |
Eric Blake | 6dc1667 | 2019-01-17 13:36:46 -0600 | [diff] [blame] | 405 | g_free(info.name); |
Paolo Bonzini | a517e88 | 2011-11-04 15:51:21 +0100 | [diff] [blame] | 406 | kill(getpid(), SIGTERM); |
| 407 | return (void *) EXIT_SUCCESS; |
| 408 | |
Paolo Bonzini | 0c544d7 | 2014-03-14 18:10:54 +0100 | [diff] [blame] | 409 | out_fd: |
| 410 | close(fd); |
| 411 | out_socket: |
Daniel P. Berrange | d0d6ff5 | 2016-02-10 18:41:02 +0000 | [diff] [blame] | 412 | object_unref(OBJECT(sioc)); |
Paolo Bonzini | a517e88 | 2011-11-04 15:51:21 +0100 | [diff] [blame] | 413 | out: |
Eric Blake | 6dc1667 | 2019-01-17 13:36:46 -0600 | [diff] [blame] | 414 | g_free(info.name); |
Paolo Bonzini | a517e88 | 2011-11-04 15:51:21 +0100 | [diff] [blame] | 415 | kill(getpid(), SIGTERM); |
| 416 | return (void *) EXIT_FAILURE; |
ths | cd831bd | 2008-07-03 10:23:51 +0000 | [diff] [blame] | 417 | } |
Eric Blake | 3c1fa35 | 2018-12-15 07:53:08 -0600 | [diff] [blame] | 418 | #endif /* HAVE_NBD_DEVICE */ |
ths | cd831bd | 2008-07-03 10:23:51 +0000 | [diff] [blame] | 419 | |
Fam Zheng | e4afbf4 | 2015-05-19 10:50:59 +0000 | [diff] [blame] | 420 | static int nbd_can_accept(void) |
Paolo Bonzini | a61c678 | 2011-09-12 17:28:11 +0200 | [diff] [blame] | 421 | { |
Eric Blake | df8ad9f | 2017-05-26 22:04:21 -0500 | [diff] [blame] | 422 | return state == RUNNING && nb_fds < shared; |
Paolo Bonzini | a61c678 | 2011-09-12 17:28:11 +0200 | [diff] [blame] | 423 | } |
| 424 | |
Philippe Mathieu-Daudé | 9d97658 | 2019-01-11 17:35:19 +0100 | [diff] [blame] | 425 | static void nbd_export_closed(NBDExport *export) |
Paolo Bonzini | 7860a38 | 2012-09-18 13:31:56 +0200 | [diff] [blame] | 426 | { |
| 427 | assert(state == TERMINATING); |
| 428 | state = TERMINATED; |
| 429 | } |
| 430 | |
Daniel P. Berrange | d0d6ff5 | 2016-02-10 18:41:02 +0000 | [diff] [blame] | 431 | static void nbd_update_server_watch(void); |
Fam Zheng | e4afbf4 | 2015-05-19 10:50:59 +0000 | [diff] [blame] | 432 | |
Eric Blake | 0c9390d | 2017-06-08 17:26:17 -0500 | [diff] [blame] | 433 | static void nbd_client_closed(NBDClient *client, bool negotiated) |
Paolo Bonzini | a61c678 | 2011-09-12 17:28:11 +0200 | [diff] [blame] | 434 | { |
Paolo Bonzini | 1743b51 | 2011-09-19 14:33:23 +0200 | [diff] [blame] | 435 | nb_fds--; |
Eric Blake | 0c9390d | 2017-06-08 17:26:17 -0500 | [diff] [blame] | 436 | if (negotiated && nb_fds == 0 && !persistent && state == RUNNING) { |
Paolo Bonzini | 7860a38 | 2012-09-18 13:31:56 +0200 | [diff] [blame] | 437 | state = TERMINATE; |
| 438 | } |
Daniel P. Berrange | d0d6ff5 | 2016-02-10 18:41:02 +0000 | [diff] [blame] | 439 | nbd_update_server_watch(); |
Paolo Bonzini | 7860a38 | 2012-09-18 13:31:56 +0200 | [diff] [blame] | 440 | nbd_client_put(client); |
Paolo Bonzini | a61c678 | 2011-09-12 17:28:11 +0200 | [diff] [blame] | 441 | } |
| 442 | |
Daniel P. Berrange | e4849c1 | 2017-12-18 10:16:43 +0000 | [diff] [blame] | 443 | static void nbd_accept(QIONetListener *listener, QIOChannelSocket *cioc, |
| 444 | gpointer opaque) |
Paolo Bonzini | a61c678 | 2011-09-12 17:28:11 +0200 | [diff] [blame] | 445 | { |
Paolo Bonzini | 7860a38 | 2012-09-18 13:31:56 +0200 | [diff] [blame] | 446 | if (state >= TERMINATE) { |
Daniel P. Berrange | e4849c1 | 2017-12-18 10:16:43 +0000 | [diff] [blame] | 447 | return; |
Paolo Bonzini | 7860a38 | 2012-09-18 13:31:56 +0200 | [diff] [blame] | 448 | } |
| 449 | |
Fam Zheng | ee7d7aa | 2016-01-14 16:41:01 +0800 | [diff] [blame] | 450 | nb_fds++; |
Daniel P. Berrange | d0d6ff5 | 2016-02-10 18:41:02 +0000 | [diff] [blame] | 451 | nbd_update_server_watch(); |
Daniel P. Berrange | b25e12d | 2019-02-27 16:20:33 +0000 | [diff] [blame] | 452 | nbd_client_new(cioc, tlscreds, tlsauthz, nbd_client_closed); |
Paolo Bonzini | a61c678 | 2011-09-12 17:28:11 +0200 | [diff] [blame] | 453 | } |
| 454 | |
Daniel P. Berrange | d0d6ff5 | 2016-02-10 18:41:02 +0000 | [diff] [blame] | 455 | static void nbd_update_server_watch(void) |
Fam Zheng | e4afbf4 | 2015-05-19 10:50:59 +0000 | [diff] [blame] | 456 | { |
| 457 | if (nbd_can_accept()) { |
Daniel P. Berrange | e4849c1 | 2017-12-18 10:16:43 +0000 | [diff] [blame] | 458 | qio_net_listener_set_client_func(server, nbd_accept, NULL, NULL); |
Fam Zheng | e4afbf4 | 2015-05-19 10:50:59 +0000 | [diff] [blame] | 459 | } else { |
Daniel P. Berrange | e4849c1 | 2017-12-18 10:16:43 +0000 | [diff] [blame] | 460 | qio_net_listener_set_client_func(server, NULL, NULL, NULL); |
Fam Zheng | e4afbf4 | 2015-05-19 10:50:59 +0000 | [diff] [blame] | 461 | } |
| 462 | } |
| 463 | |
Daniel P. Berrange | 48bec07 | 2015-09-16 14:52:23 +0100 | [diff] [blame] | 464 | |
Markus Armbruster | bd269eb | 2017-04-26 09:36:41 +0200 | [diff] [blame] | 465 | static SocketAddress *nbd_build_socket_address(const char *sockpath, |
Daniel P. Berrange | 48bec07 | 2015-09-16 14:52:23 +0100 | [diff] [blame] | 466 | const char *bindto, |
| 467 | const char *port) |
| 468 | { |
Markus Armbruster | bd269eb | 2017-04-26 09:36:41 +0200 | [diff] [blame] | 469 | SocketAddress *saddr; |
Daniel P. Berrange | 48bec07 | 2015-09-16 14:52:23 +0100 | [diff] [blame] | 470 | |
Markus Armbruster | bd269eb | 2017-04-26 09:36:41 +0200 | [diff] [blame] | 471 | saddr = g_new0(SocketAddress, 1); |
Daniel P. Berrange | 48bec07 | 2015-09-16 14:52:23 +0100 | [diff] [blame] | 472 | if (sockpath) { |
Markus Armbruster | bd269eb | 2017-04-26 09:36:41 +0200 | [diff] [blame] | 473 | saddr->type = SOCKET_ADDRESS_TYPE_UNIX; |
| 474 | saddr->u.q_unix.path = g_strdup(sockpath); |
Daniel P. Berrange | 48bec07 | 2015-09-16 14:52:23 +0100 | [diff] [blame] | 475 | } else { |
Eric Blake | 0399293 | 2016-03-03 09:16:48 -0700 | [diff] [blame] | 476 | InetSocketAddress *inet; |
Markus Armbruster | bd269eb | 2017-04-26 09:36:41 +0200 | [diff] [blame] | 477 | saddr->type = SOCKET_ADDRESS_TYPE_INET; |
| 478 | inet = &saddr->u.inet; |
Eric Blake | 0399293 | 2016-03-03 09:16:48 -0700 | [diff] [blame] | 479 | inet->host = g_strdup(bindto); |
Daniel P. Berrange | 48bec07 | 2015-09-16 14:52:23 +0100 | [diff] [blame] | 480 | if (port) { |
Eric Blake | 0399293 | 2016-03-03 09:16:48 -0700 | [diff] [blame] | 481 | inet->port = g_strdup(port); |
Daniel P. Berrange | 48bec07 | 2015-09-16 14:52:23 +0100 | [diff] [blame] | 482 | } else { |
Eric Blake | 0399293 | 2016-03-03 09:16:48 -0700 | [diff] [blame] | 483 | inet->port = g_strdup_printf("%d", NBD_DEFAULT_PORT); |
Daniel P. Berrange | 48bec07 | 2015-09-16 14:52:23 +0100 | [diff] [blame] | 484 | } |
| 485 | } |
| 486 | |
| 487 | return saddr; |
| 488 | } |
| 489 | |
| 490 | |
Daniel P. Berrange | 77c9aae | 2016-02-17 10:10:19 +0000 | [diff] [blame] | 491 | static QemuOptsList file_opts = { |
| 492 | .name = "file", |
| 493 | .implied_opt_name = "file", |
| 494 | .head = QTAILQ_HEAD_INITIALIZER(file_opts.head), |
| 495 | .desc = { |
| 496 | /* no elements => accept any params */ |
| 497 | { /* end of list */ } |
| 498 | }, |
| 499 | }; |
| 500 | |
Daniel P. Berrange | 0ab3b33 | 2016-02-10 18:41:00 +0000 | [diff] [blame] | 501 | static QemuOptsList qemu_object_opts = { |
| 502 | .name = "object", |
| 503 | .implied_opt_name = "qom-type", |
| 504 | .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head), |
| 505 | .desc = { |
| 506 | { } |
| 507 | }, |
| 508 | }; |
| 509 | |
Kevin Wolf | 495bf89 | 2019-10-11 21:49:17 +0200 | [diff] [blame] | 510 | static bool qemu_nbd_object_print_help(const char *type, QemuOpts *opts) |
| 511 | { |
| 512 | if (user_creatable_print_help(type, opts)) { |
| 513 | exit(0); |
| 514 | } |
| 515 | return true; |
| 516 | } |
Daniel P. Berrange | 0ab3b33 | 2016-02-10 18:41:00 +0000 | [diff] [blame] | 517 | |
Daniel P. Berrange | 145614a | 2016-02-10 18:41:13 +0000 | [diff] [blame] | 518 | |
Eric Blake | 68b96f1 | 2019-01-17 13:36:56 -0600 | [diff] [blame] | 519 | static QCryptoTLSCreds *nbd_get_tls_creds(const char *id, bool list, |
| 520 | Error **errp) |
Daniel P. Berrange | 145614a | 2016-02-10 18:41:13 +0000 | [diff] [blame] | 521 | { |
| 522 | Object *obj; |
| 523 | QCryptoTLSCreds *creds; |
| 524 | |
| 525 | obj = object_resolve_path_component( |
| 526 | object_get_objects_root(), id); |
| 527 | if (!obj) { |
| 528 | error_setg(errp, "No TLS credentials with id '%s'", |
| 529 | id); |
| 530 | return NULL; |
| 531 | } |
| 532 | creds = (QCryptoTLSCreds *) |
| 533 | object_dynamic_cast(obj, TYPE_QCRYPTO_TLS_CREDS); |
| 534 | if (!creds) { |
| 535 | error_setg(errp, "Object with id '%s' is not TLS credentials", |
| 536 | id); |
| 537 | return NULL; |
| 538 | } |
| 539 | |
Eric Blake | 68b96f1 | 2019-01-17 13:36:56 -0600 | [diff] [blame] | 540 | if (list) { |
| 541 | if (creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) { |
| 542 | error_setg(errp, |
| 543 | "Expecting TLS credentials with a client endpoint"); |
| 544 | return NULL; |
| 545 | } |
| 546 | } else { |
| 547 | if (creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) { |
| 548 | error_setg(errp, |
| 549 | "Expecting TLS credentials with a server endpoint"); |
| 550 | return NULL; |
| 551 | } |
Daniel P. Berrange | 145614a | 2016-02-10 18:41:13 +0000 | [diff] [blame] | 552 | } |
| 553 | object_ref(obj); |
| 554 | return creds; |
| 555 | } |
| 556 | |
Richard W.M. Jones | a721f53 | 2017-02-04 10:03:17 +0000 | [diff] [blame] | 557 | static void setup_address_and_port(const char **address, const char **port) |
| 558 | { |
| 559 | if (*address == NULL) { |
| 560 | *address = "0.0.0.0"; |
| 561 | } |
| 562 | |
| 563 | if (*port == NULL) { |
| 564 | *port = stringify(NBD_DEFAULT_PORT); |
| 565 | } |
| 566 | } |
| 567 | |
Richard W.M. Jones | a721f53 | 2017-02-04 10:03:17 +0000 | [diff] [blame] | 568 | /* |
| 569 | * Check socket parameters compatibility when socket activation is used. |
| 570 | */ |
| 571 | static const char *socket_activation_validate_opts(const char *device, |
| 572 | const char *sockpath, |
| 573 | const char *address, |
Eric Blake | 68b96f1 | 2019-01-17 13:36:56 -0600 | [diff] [blame] | 574 | const char *port, |
| 575 | bool list) |
Richard W.M. Jones | a721f53 | 2017-02-04 10:03:17 +0000 | [diff] [blame] | 576 | { |
| 577 | if (device != NULL) { |
| 578 | return "NBD device can't be set when using socket activation"; |
| 579 | } |
| 580 | |
| 581 | if (sockpath != NULL) { |
| 582 | return "Unix socket can't be set when using socket activation"; |
| 583 | } |
| 584 | |
| 585 | if (address != NULL) { |
| 586 | return "The interface can't be set when using socket activation"; |
| 587 | } |
| 588 | |
| 589 | if (port != NULL) { |
| 590 | return "TCP port number can't be set when using socket activation"; |
| 591 | } |
| 592 | |
Eric Blake | 68b96f1 | 2019-01-17 13:36:56 -0600 | [diff] [blame] | 593 | if (list) { |
| 594 | return "List mode is incompatible with socket activation"; |
| 595 | } |
| 596 | |
Richard W.M. Jones | a721f53 | 2017-02-04 10:03:17 +0000 | [diff] [blame] | 597 | return NULL; |
| 598 | } |
Daniel P. Berrange | 145614a | 2016-02-10 18:41:13 +0000 | [diff] [blame] | 599 | |
Kevin Wolf | b3b5299 | 2018-05-16 13:46:37 +0200 | [diff] [blame] | 600 | static void qemu_nbd_shutdown(void) |
| 601 | { |
| 602 | job_cancel_sync_all(); |
| 603 | bdrv_close_all(); |
| 604 | } |
| 605 | |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 606 | int main(int argc, char **argv) |
| 607 | { |
Markus Armbruster | 26f54e9 | 2014-10-07 13:59:04 +0200 | [diff] [blame] | 608 | BlockBackend *blk; |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 609 | BlockDriverState *bs; |
Eric Blake | 9d26dfc | 2019-01-17 13:36:43 -0600 | [diff] [blame] | 610 | uint64_t dev_offset = 0; |
Eric Blake | dbb38ca | 2019-08-23 09:37:22 -0500 | [diff] [blame] | 611 | bool readonly = false; |
ths | cd831bd | 2008-07-03 10:23:51 +0000 | [diff] [blame] | 612 | bool disconnect = false; |
Richard W.M. Jones | a721f53 | 2017-02-04 10:03:17 +0000 | [diff] [blame] | 613 | const char *bindto = NULL; |
Daniel P. Berrange | 48bec07 | 2015-09-16 14:52:23 +0100 | [diff] [blame] | 614 | const char *port = NULL; |
| 615 | char *sockpath = NULL; |
Paolo Bonzini | a6ac231 | 2011-12-06 09:07:00 +0100 | [diff] [blame] | 616 | char *device = NULL; |
Eric Blake | 9d26dfc | 2019-01-17 13:36:43 -0600 | [diff] [blame] | 617 | int64_t fd_size; |
Wenchao Xia | 8c116b0 | 2013-12-04 17:10:55 +0800 | [diff] [blame] | 618 | QemuOpts *sn_opts = NULL; |
| 619 | const char *sn_id_or_name = NULL; |
Eric Blake | 68b96f1 | 2019-01-17 13:36:56 -0600 | [diff] [blame] | 620 | const char *sopt = "hVb:o:p:rsnP:c:dvk:e:f:tl:x:T:D:B:L"; |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 621 | struct option lopt[] = { |
Daniel P. Berrange | aa6e546 | 2016-02-17 10:10:22 +0000 | [diff] [blame] | 622 | { "help", no_argument, NULL, 'h' }, |
| 623 | { "version", no_argument, NULL, 'V' }, |
| 624 | { "bind", required_argument, NULL, 'b' }, |
| 625 | { "port", required_argument, NULL, 'p' }, |
| 626 | { "socket", required_argument, NULL, 'k' }, |
| 627 | { "offset", required_argument, NULL, 'o' }, |
| 628 | { "read-only", no_argument, NULL, 'r' }, |
| 629 | { "partition", required_argument, NULL, 'P' }, |
Eric Blake | 636192c | 2019-01-11 13:47:20 -0600 | [diff] [blame] | 630 | { "bitmap", required_argument, NULL, 'B' }, |
Daniel P. Berrange | aa6e546 | 2016-02-17 10:10:22 +0000 | [diff] [blame] | 631 | { "connect", required_argument, NULL, 'c' }, |
| 632 | { "disconnect", no_argument, NULL, 'd' }, |
Eric Blake | 68b96f1 | 2019-01-17 13:36:56 -0600 | [diff] [blame] | 633 | { "list", no_argument, NULL, 'L' }, |
Daniel P. Berrange | aa6e546 | 2016-02-17 10:10:22 +0000 | [diff] [blame] | 634 | { "snapshot", no_argument, NULL, 's' }, |
| 635 | { "load-snapshot", required_argument, NULL, 'l' }, |
| 636 | { "nocache", no_argument, NULL, 'n' }, |
| 637 | { "cache", required_argument, NULL, QEMU_NBD_OPT_CACHE }, |
| 638 | { "aio", required_argument, NULL, QEMU_NBD_OPT_AIO }, |
| 639 | { "discard", required_argument, NULL, QEMU_NBD_OPT_DISCARD }, |
| 640 | { "detect-zeroes", required_argument, NULL, |
| 641 | QEMU_NBD_OPT_DETECT_ZEROES }, |
| 642 | { "shared", required_argument, NULL, 'e' }, |
| 643 | { "format", required_argument, NULL, 'f' }, |
| 644 | { "persistent", no_argument, NULL, 't' }, |
| 645 | { "verbose", no_argument, NULL, 'v' }, |
| 646 | { "object", required_argument, NULL, QEMU_NBD_OPT_OBJECT }, |
| 647 | { "export-name", required_argument, NULL, 'x' }, |
Eric Blake | b1a75b3 | 2016-10-14 13:33:03 -0500 | [diff] [blame] | 648 | { "description", required_argument, NULL, 'D' }, |
Daniel P. Berrange | aa6e546 | 2016-02-17 10:10:22 +0000 | [diff] [blame] | 649 | { "tls-creds", required_argument, NULL, QEMU_NBD_OPT_TLSCREDS }, |
Daniel P. Berrange | b25e12d | 2019-02-27 16:20:33 +0000 | [diff] [blame] | 650 | { "tls-authz", required_argument, NULL, QEMU_NBD_OPT_TLSAUTHZ }, |
Daniel P. Berrange | aa6e546 | 2016-02-17 10:10:22 +0000 | [diff] [blame] | 651 | { "image-opts", no_argument, NULL, QEMU_NBD_OPT_IMAGE_OPTS }, |
Denis V. Lunev | 39ca463 | 2016-06-17 17:44:12 +0300 | [diff] [blame] | 652 | { "trace", required_argument, NULL, 'T' }, |
Max Reitz | ffb31e1 | 2016-09-28 22:46:42 +0200 | [diff] [blame] | 653 | { "fork", no_argument, NULL, QEMU_NBD_OPT_FORK }, |
Max Reitz | 637bc5a | 2019-05-08 23:18:16 +0200 | [diff] [blame] | 654 | { "pid-file", required_argument, NULL, QEMU_NBD_OPT_PID_FILE }, |
Blue Swirl | 660f11b | 2009-07-31 21:16:51 +0000 | [diff] [blame] | 655 | { NULL, 0, NULL, 0 } |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 656 | }; |
| 657 | int ch; |
| 658 | int opt_ind = 0; |
Naphtali Sprei | f5edb01 | 2010-01-17 16:48:13 +0200 | [diff] [blame] | 659 | int flags = BDRV_O_RDWR; |
Eric Blake | 43b5101 | 2019-01-17 13:36:44 -0600 | [diff] [blame] | 660 | int partition = 0; |
Max Reitz | 4fbec26 | 2015-02-05 13:58:19 -0500 | [diff] [blame] | 661 | int ret = 0; |
Paolo Bonzini | 39a5235 | 2012-07-18 14:57:15 +0200 | [diff] [blame] | 662 | bool seen_cache = false; |
Paolo Bonzini | ded9d2d | 2013-02-08 14:06:13 +0100 | [diff] [blame] | 663 | bool seen_discard = false; |
Paolo Bonzini | 39a5235 | 2012-07-18 14:57:15 +0200 | [diff] [blame] | 664 | bool seen_aio = false; |
Paolo Bonzini | a517e88 | 2011-11-04 15:51:21 +0100 | [diff] [blame] | 665 | pthread_t client_thread; |
Daniel P. Berrange | e6b6367 | 2013-03-19 11:20:20 +0000 | [diff] [blame] | 666 | const char *fmt = NULL; |
Max Reitz | 34b5d2c | 2013-09-05 14:45:29 +0200 | [diff] [blame] | 667 | Error *local_err = NULL; |
Peter Lieven | b3838a4 | 2014-08-13 19:20:18 +0200 | [diff] [blame] | 668 | BlockdevDetectZeroesOptions detect_zeroes = BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF; |
Max Reitz | 4fbec26 | 2015-02-05 13:58:19 -0500 | [diff] [blame] | 669 | QDict *options = NULL; |
Eric Blake | 68b96f1 | 2019-01-17 13:36:56 -0600 | [diff] [blame] | 670 | const char *export_name = NULL; /* defaults to "" later for server mode */ |
Eric Blake | b1a75b3 | 2016-10-14 13:33:03 -0500 | [diff] [blame] | 671 | const char *export_description = NULL; |
Eric Blake | 636192c | 2019-01-11 13:47:20 -0600 | [diff] [blame] | 672 | const char *bitmap = NULL; |
Daniel P. Berrange | 145614a | 2016-02-10 18:41:13 +0000 | [diff] [blame] | 673 | const char *tlscredsid = NULL; |
Daniel P. Berrange | 77c9aae | 2016-02-17 10:10:19 +0000 | [diff] [blame] | 674 | bool imageOpts = false; |
Kevin Wolf | 6effd5b | 2016-03-14 11:43:28 +0100 | [diff] [blame] | 675 | bool writethrough = true; |
Denis V. Lunev | 39ca463 | 2016-06-17 17:44:12 +0300 | [diff] [blame] | 676 | char *trace_file = NULL; |
Max Reitz | ffb31e1 | 2016-09-28 22:46:42 +0200 | [diff] [blame] | 677 | bool fork_process = false; |
Eric Blake | 68b96f1 | 2019-01-17 13:36:56 -0600 | [diff] [blame] | 678 | bool list = false; |
Max Reitz | ffb31e1 | 2016-09-28 22:46:42 +0200 | [diff] [blame] | 679 | int old_stderr = -1; |
Richard W.M. Jones | a721f53 | 2017-02-04 10:03:17 +0000 | [diff] [blame] | 680 | unsigned socket_activation; |
Max Reitz | 637bc5a | 2019-05-08 23:18:16 +0200 | [diff] [blame] | 681 | const char *pid_file_name = NULL; |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 682 | |
Paolo Bonzini | a517e88 | 2011-11-04 15:51:21 +0100 | [diff] [blame] | 683 | /* The client thread uses SIGTERM to interrupt the server. A signal |
| 684 | * handler ensures that "qemu-nbd -v -c" exits with a nice status code. |
| 685 | */ |
Paolo Bonzini | bb34511 | 2011-11-04 15:51:19 +0100 | [diff] [blame] | 686 | struct sigaction sa_sigterm; |
Paolo Bonzini | bb34511 | 2011-11-04 15:51:19 +0100 | [diff] [blame] | 687 | memset(&sa_sigterm, 0, sizeof(sa_sigterm)); |
| 688 | sa_sigterm.sa_handler = termsig_handler; |
| 689 | sigaction(SIGTERM, &sa_sigterm, NULL); |
Daniel P. Berrange | c229708 | 2016-04-06 12:12:06 +0100 | [diff] [blame] | 690 | |
Max Reitz | 041e32b | 2017-06-11 14:37:14 +0200 | [diff] [blame] | 691 | #ifdef CONFIG_POSIX |
| 692 | signal(SIGPIPE, SIG_IGN); |
| 693 | #endif |
| 694 | |
Christophe Fergeau | f5852ef | 2019-01-31 17:46:14 +0100 | [diff] [blame] | 695 | error_init(argv[0]); |
Daniel P. Berrange | fe4db84 | 2016-10-04 14:35:52 +0100 | [diff] [blame] | 696 | module_call_init(MODULE_INIT_TRACE); |
Eduardo Habkost | e8f2d27 | 2016-05-12 11:10:04 -0300 | [diff] [blame] | 697 | qcrypto_init(&error_fatal); |
Daniel P. Berrange | c229708 | 2016-04-06 12:12:06 +0100 | [diff] [blame] | 698 | |
Daniel P. Berrange | 0ab3b33 | 2016-02-10 18:41:00 +0000 | [diff] [blame] | 699 | module_call_init(MODULE_INIT_QOM); |
| 700 | qemu_add_opts(&qemu_object_opts); |
Denis V. Lunev | 39ca463 | 2016-06-17 17:44:12 +0300 | [diff] [blame] | 701 | qemu_add_opts(&qemu_trace_opts); |
Fam Zheng | 10f5bff | 2014-02-10 14:48:51 +0800 | [diff] [blame] | 702 | qemu_init_exec_dir(argv[0]); |
Paolo Bonzini | bb34511 | 2011-11-04 15:51:19 +0100 | [diff] [blame] | 703 | |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 704 | while ((ch = getopt_long(argc, argv, sopt, lopt, &opt_ind)) != -1) { |
| 705 | switch (ch) { |
| 706 | case 's': |
ths | 2f72648 | 2008-07-03 11:47:46 +0000 | [diff] [blame] | 707 | flags |= BDRV_O_SNAPSHOT; |
| 708 | break; |
| 709 | case 'n': |
Paolo Bonzini | 39a5235 | 2012-07-18 14:57:15 +0200 | [diff] [blame] | 710 | optarg = (char *) "none"; |
| 711 | /* fallthrough */ |
| 712 | case QEMU_NBD_OPT_CACHE: |
| 713 | if (seen_cache) { |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 714 | error_report("-n and --cache can only be specified once"); |
| 715 | exit(EXIT_FAILURE); |
Paolo Bonzini | 39a5235 | 2012-07-18 14:57:15 +0200 | [diff] [blame] | 716 | } |
| 717 | seen_cache = true; |
Kevin Wolf | 6effd5b | 2016-03-14 11:43:28 +0100 | [diff] [blame] | 718 | if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) == -1) { |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 719 | error_report("Invalid cache mode `%s'", optarg); |
| 720 | exit(EXIT_FAILURE); |
Paolo Bonzini | 39a5235 | 2012-07-18 14:57:15 +0200 | [diff] [blame] | 721 | } |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 722 | break; |
Paolo Bonzini | 39a5235 | 2012-07-18 14:57:15 +0200 | [diff] [blame] | 723 | case QEMU_NBD_OPT_AIO: |
| 724 | if (seen_aio) { |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 725 | error_report("--aio can only be specified once"); |
| 726 | exit(EXIT_FAILURE); |
Paolo Bonzini | 39a5235 | 2012-07-18 14:57:15 +0200 | [diff] [blame] | 727 | } |
| 728 | seen_aio = true; |
Aarushi Mehta | 7680274 | 2020-01-20 14:18:56 +0000 | [diff] [blame] | 729 | if (bdrv_parse_aio(optarg, &flags) < 0) { |
| 730 | error_report("Invalid aio mode '%s'", optarg); |
| 731 | exit(EXIT_FAILURE); |
Paolo Bonzini | 39a5235 | 2012-07-18 14:57:15 +0200 | [diff] [blame] | 732 | } |
| 733 | break; |
Paolo Bonzini | ded9d2d | 2013-02-08 14:06:13 +0100 | [diff] [blame] | 734 | case QEMU_NBD_OPT_DISCARD: |
| 735 | if (seen_discard) { |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 736 | error_report("--discard can only be specified once"); |
| 737 | exit(EXIT_FAILURE); |
Paolo Bonzini | ded9d2d | 2013-02-08 14:06:13 +0100 | [diff] [blame] | 738 | } |
| 739 | seen_discard = true; |
| 740 | if (bdrv_parse_discard_flags(optarg, &flags) == -1) { |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 741 | error_report("Invalid discard mode `%s'", optarg); |
| 742 | exit(EXIT_FAILURE); |
Paolo Bonzini | ded9d2d | 2013-02-08 14:06:13 +0100 | [diff] [blame] | 743 | } |
| 744 | break; |
Peter Lieven | b3838a4 | 2014-08-13 19:20:18 +0200 | [diff] [blame] | 745 | case QEMU_NBD_OPT_DETECT_ZEROES: |
| 746 | detect_zeroes = |
Marc-André Lureau | f7abe0e | 2017-08-24 10:46:10 +0200 | [diff] [blame] | 747 | qapi_enum_parse(&BlockdevDetectZeroesOptions_lookup, |
Peter Lieven | b3838a4 | 2014-08-13 19:20:18 +0200 | [diff] [blame] | 748 | optarg, |
Peter Lieven | b3838a4 | 2014-08-13 19:20:18 +0200 | [diff] [blame] | 749 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF, |
| 750 | &local_err); |
| 751 | if (local_err) { |
Markus Armbruster | c29b77f | 2015-12-18 16:35:14 +0100 | [diff] [blame] | 752 | error_reportf_err(local_err, |
| 753 | "Failed to parse detect_zeroes mode: "); |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 754 | exit(EXIT_FAILURE); |
Peter Lieven | b3838a4 | 2014-08-13 19:20:18 +0200 | [diff] [blame] | 755 | } |
| 756 | if (detect_zeroes == BLOCKDEV_DETECT_ZEROES_OPTIONS_UNMAP && |
| 757 | !(flags & BDRV_O_UNMAP)) { |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 758 | error_report("setting detect-zeroes to unmap is not allowed " |
| 759 | "without setting discard operation to unmap"); |
| 760 | exit(EXIT_FAILURE); |
Peter Lieven | b3838a4 | 2014-08-13 19:20:18 +0200 | [diff] [blame] | 761 | } |
| 762 | break; |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 763 | case 'b': |
| 764 | bindto = optarg; |
| 765 | break; |
| 766 | case 'p': |
Daniel P. Berrange | 48bec07 | 2015-09-16 14:52:23 +0100 | [diff] [blame] | 767 | port = optarg; |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 768 | break; |
| 769 | case 'o': |
Eric Blake | 43b5101 | 2019-01-17 13:36:44 -0600 | [diff] [blame] | 770 | if (qemu_strtou64(optarg, NULL, 0, &dev_offset) < 0) { |
| 771 | error_report("Invalid offset '%s'", optarg); |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 772 | exit(EXIT_FAILURE); |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 773 | } |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 774 | break; |
Wenchao Xia | 8c116b0 | 2013-12-04 17:10:55 +0800 | [diff] [blame] | 775 | case 'l': |
| 776 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { |
Markus Armbruster | 70b9433 | 2015-02-13 12:50:26 +0100 | [diff] [blame] | 777 | sn_opts = qemu_opts_parse_noisily(&internal_snapshot_opts, |
| 778 | optarg, false); |
Wenchao Xia | 8c116b0 | 2013-12-04 17:10:55 +0800 | [diff] [blame] | 779 | if (!sn_opts) { |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 780 | error_report("Failed in parsing snapshot param `%s'", |
| 781 | optarg); |
| 782 | exit(EXIT_FAILURE); |
Wenchao Xia | 8c116b0 | 2013-12-04 17:10:55 +0800 | [diff] [blame] | 783 | } |
| 784 | } else { |
| 785 | sn_id_or_name = optarg; |
| 786 | } |
| 787 | /* fall through */ |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 788 | case 'r': |
Eric Blake | dbb38ca | 2019-08-23 09:37:22 -0500 | [diff] [blame] | 789 | readonly = true; |
Naphtali Sprei | 07108b2 | 2010-03-14 15:19:57 +0200 | [diff] [blame] | 790 | flags &= ~BDRV_O_RDWR; |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 791 | break; |
| 792 | case 'P': |
Eric Blake | 0ae2d54 | 2019-01-25 17:48:37 -0600 | [diff] [blame] | 793 | warn_report("The '-P' option is deprecated; use --image-opts with " |
| 794 | "a raw device wrapper for subset exports instead"); |
Eric Blake | 43b5101 | 2019-01-17 13:36:44 -0600 | [diff] [blame] | 795 | if (qemu_strtoi(optarg, NULL, 0, &partition) < 0 || |
| 796 | partition < 1 || partition > 8) { |
| 797 | error_report("Invalid partition '%s'", optarg); |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 798 | exit(EXIT_FAILURE); |
Peter Lieven | 713cc67 | 2014-08-13 19:20:19 +0200 | [diff] [blame] | 799 | } |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 800 | break; |
Eric Blake | 636192c | 2019-01-11 13:47:20 -0600 | [diff] [blame] | 801 | case 'B': |
| 802 | bitmap = optarg; |
| 803 | break; |
ths | cd831bd | 2008-07-03 10:23:51 +0000 | [diff] [blame] | 804 | case 'k': |
Paolo Bonzini | b32f6c2 | 2011-11-04 15:51:20 +0100 | [diff] [blame] | 805 | sockpath = optarg; |
Peter Lieven | 713cc67 | 2014-08-13 19:20:19 +0200 | [diff] [blame] | 806 | if (sockpath[0] != '/') { |
Markus Armbruster | 9af9e0f | 2015-12-18 16:35:19 +0100 | [diff] [blame] | 807 | error_report("socket path must be absolute"); |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 808 | exit(EXIT_FAILURE); |
Peter Lieven | 713cc67 | 2014-08-13 19:20:19 +0200 | [diff] [blame] | 809 | } |
ths | cd831bd | 2008-07-03 10:23:51 +0000 | [diff] [blame] | 810 | break; |
| 811 | case 'd': |
| 812 | disconnect = true; |
| 813 | break; |
| 814 | case 'c': |
| 815 | device = optarg; |
| 816 | break; |
ths | 3b05a8e | 2008-07-03 12:45:02 +0000 | [diff] [blame] | 817 | case 'e': |
Eric Blake | 43b5101 | 2019-01-17 13:36:44 -0600 | [diff] [blame] | 818 | if (qemu_strtoi(optarg, NULL, 0, &shared) < 0 || |
| 819 | shared < 1) { |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 820 | error_report("Invalid shared device number '%s'", optarg); |
| 821 | exit(EXIT_FAILURE); |
ths | 3b05a8e | 2008-07-03 12:45:02 +0000 | [diff] [blame] | 822 | } |
ths | 3b05a8e | 2008-07-03 12:45:02 +0000 | [diff] [blame] | 823 | break; |
Daniel P. Berrange | e6b6367 | 2013-03-19 11:20:20 +0000 | [diff] [blame] | 824 | case 'f': |
| 825 | fmt = optarg; |
| 826 | break; |
Peter Lieven | 713cc67 | 2014-08-13 19:20:19 +0200 | [diff] [blame] | 827 | case 't': |
| 828 | persistent = 1; |
| 829 | break; |
Daniel P. Berrange | 3d4b2f9 | 2016-02-10 18:41:08 +0000 | [diff] [blame] | 830 | case 'x': |
| 831 | export_name = optarg; |
Eric Blake | 93676c8 | 2019-11-13 20:46:34 -0600 | [diff] [blame] | 832 | if (strlen(export_name) > NBD_MAX_STRING_SIZE) { |
| 833 | error_report("export name '%s' too long", export_name); |
| 834 | exit(EXIT_FAILURE); |
| 835 | } |
Daniel P. Berrange | 3d4b2f9 | 2016-02-10 18:41:08 +0000 | [diff] [blame] | 836 | break; |
Eric Blake | b1a75b3 | 2016-10-14 13:33:03 -0500 | [diff] [blame] | 837 | case 'D': |
| 838 | export_description = optarg; |
Eric Blake | 93676c8 | 2019-11-13 20:46:34 -0600 | [diff] [blame] | 839 | if (strlen(export_description) > NBD_MAX_STRING_SIZE) { |
| 840 | error_report("export description '%s' too long", |
| 841 | export_description); |
| 842 | exit(EXIT_FAILURE); |
| 843 | } |
Eric Blake | b1a75b3 | 2016-10-14 13:33:03 -0500 | [diff] [blame] | 844 | break; |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 845 | case 'v': |
| 846 | verbose = 1; |
| 847 | break; |
| 848 | case 'V': |
| 849 | version(argv[0]); |
| 850 | exit(0); |
| 851 | break; |
| 852 | case 'h': |
| 853 | usage(argv[0]); |
| 854 | exit(0); |
| 855 | break; |
| 856 | case '?': |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 857 | error_report("Try `%s --help' for more information.", argv[0]); |
| 858 | exit(EXIT_FAILURE); |
Daniel P. Berrange | 0ab3b33 | 2016-02-10 18:41:00 +0000 | [diff] [blame] | 859 | case QEMU_NBD_OPT_OBJECT: { |
| 860 | QemuOpts *opts; |
| 861 | opts = qemu_opts_parse_noisily(&qemu_object_opts, |
| 862 | optarg, true); |
| 863 | if (!opts) { |
| 864 | exit(EXIT_FAILURE); |
| 865 | } |
| 866 | } break; |
Daniel P. Berrange | 145614a | 2016-02-10 18:41:13 +0000 | [diff] [blame] | 867 | case QEMU_NBD_OPT_TLSCREDS: |
| 868 | tlscredsid = optarg; |
| 869 | break; |
Daniel P. Berrange | 77c9aae | 2016-02-17 10:10:19 +0000 | [diff] [blame] | 870 | case QEMU_NBD_OPT_IMAGE_OPTS: |
| 871 | imageOpts = true; |
| 872 | break; |
Denis V. Lunev | 39ca463 | 2016-06-17 17:44:12 +0300 | [diff] [blame] | 873 | case 'T': |
| 874 | g_free(trace_file); |
| 875 | trace_file = trace_opt_parse(optarg); |
| 876 | break; |
Daniel P. Berrange | b25e12d | 2019-02-27 16:20:33 +0000 | [diff] [blame] | 877 | case QEMU_NBD_OPT_TLSAUTHZ: |
| 878 | tlsauthz = optarg; |
| 879 | break; |
Max Reitz | ffb31e1 | 2016-09-28 22:46:42 +0200 | [diff] [blame] | 880 | case QEMU_NBD_OPT_FORK: |
| 881 | fork_process = true; |
| 882 | break; |
Eric Blake | 68b96f1 | 2019-01-17 13:36:56 -0600 | [diff] [blame] | 883 | case 'L': |
| 884 | list = true; |
| 885 | break; |
Max Reitz | 637bc5a | 2019-05-08 23:18:16 +0200 | [diff] [blame] | 886 | case QEMU_NBD_OPT_PID_FILE: |
| 887 | pid_file_name = optarg; |
| 888 | break; |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 889 | } |
| 890 | } |
| 891 | |
Eric Blake | 68b96f1 | 2019-01-17 13:36:56 -0600 | [diff] [blame] | 892 | if (list) { |
| 893 | if (argc != optind) { |
| 894 | error_report("List mode is incompatible with a file name"); |
| 895 | exit(EXIT_FAILURE); |
| 896 | } |
| 897 | if (export_name || export_description || dev_offset || partition || |
| 898 | device || disconnect || fmt || sn_id_or_name || bitmap || |
| 899 | seen_aio || seen_discard || seen_cache) { |
| 900 | error_report("List mode is incompatible with per-device settings"); |
| 901 | exit(EXIT_FAILURE); |
| 902 | } |
| 903 | if (fork_process) { |
| 904 | error_report("List mode is incompatible with forking"); |
| 905 | exit(EXIT_FAILURE); |
| 906 | } |
| 907 | } else if ((argc - optind) != 1) { |
Markus Armbruster | 433672b | 2015-12-18 16:35:24 +0100 | [diff] [blame] | 908 | error_report("Invalid number of arguments"); |
| 909 | error_printf("Try `%s --help' for more information.\n", argv[0]); |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 910 | exit(EXIT_FAILURE); |
Eric Blake | 68b96f1 | 2019-01-17 13:36:56 -0600 | [diff] [blame] | 911 | } else if (!export_name) { |
| 912 | export_name = ""; |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 913 | } |
| 914 | |
Markus Armbruster | 7e1e0c1 | 2018-10-17 10:26:43 +0200 | [diff] [blame] | 915 | qemu_opts_foreach(&qemu_object_opts, |
| 916 | user_creatable_add_opts_foreach, |
Kevin Wolf | 495bf89 | 2019-10-11 21:49:17 +0200 | [diff] [blame] | 917 | qemu_nbd_object_print_help, &error_fatal); |
Daniel P. Berrange | 0ab3b33 | 2016-02-10 18:41:00 +0000 | [diff] [blame] | 918 | |
Denis V. Lunev | 39ca463 | 2016-06-17 17:44:12 +0300 | [diff] [blame] | 919 | if (!trace_init_backends()) { |
| 920 | exit(1); |
| 921 | } |
| 922 | trace_init_file(trace_file); |
| 923 | qemu_set_log(LOG_TRACE); |
| 924 | |
Richard W.M. Jones | a721f53 | 2017-02-04 10:03:17 +0000 | [diff] [blame] | 925 | socket_activation = check_socket_activation(); |
| 926 | if (socket_activation == 0) { |
| 927 | setup_address_and_port(&bindto, &port); |
| 928 | } else { |
| 929 | /* Using socket activation - check user didn't use -p etc. */ |
| 930 | const char *err_msg = socket_activation_validate_opts(device, sockpath, |
Eric Blake | 68b96f1 | 2019-01-17 13:36:56 -0600 | [diff] [blame] | 931 | bindto, port, |
| 932 | list); |
Richard W.M. Jones | a721f53 | 2017-02-04 10:03:17 +0000 | [diff] [blame] | 933 | if (err_msg != NULL) { |
| 934 | error_report("%s", err_msg); |
| 935 | exit(EXIT_FAILURE); |
| 936 | } |
Paolo Bonzini | 53fabd4 | 2017-03-16 16:29:45 +0100 | [diff] [blame] | 937 | |
| 938 | /* qemu-nbd can only listen on a single socket. */ |
| 939 | if (socket_activation > 1) { |
| 940 | error_report("qemu-nbd does not support socket activation with %s > 1", |
| 941 | "LISTEN_FDS"); |
| 942 | exit(EXIT_FAILURE); |
| 943 | } |
Richard W.M. Jones | a721f53 | 2017-02-04 10:03:17 +0000 | [diff] [blame] | 944 | } |
| 945 | |
Daniel P. Berrange | 145614a | 2016-02-10 18:41:13 +0000 | [diff] [blame] | 946 | if (tlscredsid) { |
| 947 | if (sockpath) { |
| 948 | error_report("TLS is only supported with IPv4/IPv6"); |
| 949 | exit(EXIT_FAILURE); |
| 950 | } |
| 951 | if (device) { |
| 952 | error_report("TLS is not supported with a host device"); |
| 953 | exit(EXIT_FAILURE); |
| 954 | } |
Daniel P. Berrange | b25e12d | 2019-02-27 16:20:33 +0000 | [diff] [blame] | 955 | if (tlsauthz && list) { |
| 956 | error_report("TLS authorization is incompatible with export list"); |
| 957 | exit(EXIT_FAILURE); |
| 958 | } |
Eric Blake | 68b96f1 | 2019-01-17 13:36:56 -0600 | [diff] [blame] | 959 | tlscreds = nbd_get_tls_creds(tlscredsid, list, &local_err); |
Daniel P. Berrange | 145614a | 2016-02-10 18:41:13 +0000 | [diff] [blame] | 960 | if (local_err) { |
| 961 | error_report("Failed to get TLS creds %s", |
| 962 | error_get_pretty(local_err)); |
| 963 | exit(EXIT_FAILURE); |
| 964 | } |
Daniel P. Berrange | b25e12d | 2019-02-27 16:20:33 +0000 | [diff] [blame] | 965 | } else { |
| 966 | if (tlsauthz) { |
| 967 | error_report("--tls-authz is not permitted without --tls-creds"); |
| 968 | exit(EXIT_FAILURE); |
| 969 | } |
Daniel P. Berrange | 145614a | 2016-02-10 18:41:13 +0000 | [diff] [blame] | 970 | } |
| 971 | |
Eric Blake | 68b96f1 | 2019-01-17 13:36:56 -0600 | [diff] [blame] | 972 | if (list) { |
| 973 | saddr = nbd_build_socket_address(sockpath, bindto, port); |
| 974 | return qemu_nbd_client_list(saddr, tlscreds, bindto); |
| 975 | } |
| 976 | |
Eric Blake | 3c1fa35 | 2018-12-15 07:53:08 -0600 | [diff] [blame] | 977 | #if !HAVE_NBD_DEVICE |
| 978 | if (disconnect || device) { |
| 979 | error_report("Kernel /dev/nbdN support not available"); |
| 980 | exit(EXIT_FAILURE); |
| 981 | } |
| 982 | #else /* HAVE_NBD_DEVICE */ |
ths | cd831bd | 2008-07-03 10:23:51 +0000 | [diff] [blame] | 983 | if (disconnect) { |
Daniel P. Berrange | d0d6ff5 | 2016-02-10 18:41:02 +0000 | [diff] [blame] | 984 | int nbdfd = open(argv[optind], O_RDWR); |
| 985 | if (nbdfd < 0) { |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 986 | error_report("Cannot open %s: %s", argv[optind], |
| 987 | strerror(errno)); |
| 988 | exit(EXIT_FAILURE); |
Paolo Bonzini | fc19f8a | 2012-03-07 11:05:34 +0100 | [diff] [blame] | 989 | } |
Daniel P. Berrange | d0d6ff5 | 2016-02-10 18:41:02 +0000 | [diff] [blame] | 990 | nbd_disconnect(nbdfd); |
ths | cd831bd | 2008-07-03 10:23:51 +0000 | [diff] [blame] | 991 | |
Daniel P. Berrange | d0d6ff5 | 2016-02-10 18:41:02 +0000 | [diff] [blame] | 992 | close(nbdfd); |
ths | cd831bd | 2008-07-03 10:23:51 +0000 | [diff] [blame] | 993 | |
| 994 | printf("%s disconnected\n", argv[optind]); |
| 995 | |
Peter Lieven | 713cc67 | 2014-08-13 19:20:19 +0200 | [diff] [blame] | 996 | return 0; |
ths | cd831bd | 2008-07-03 10:23:51 +0000 | [diff] [blame] | 997 | } |
Eric Blake | 3c1fa35 | 2018-12-15 07:53:08 -0600 | [diff] [blame] | 998 | #endif |
ths | cd831bd | 2008-07-03 10:23:51 +0000 | [diff] [blame] | 999 | |
Max Reitz | ffb31e1 | 2016-09-28 22:46:42 +0200 | [diff] [blame] | 1000 | if ((device && !verbose) || fork_process) { |
Paolo Bonzini | c1f8fdc | 2011-11-04 15:51:22 +0100 | [diff] [blame] | 1001 | int stderr_fd[2]; |
| 1002 | pid_t pid; |
| 1003 | int ret; |
| 1004 | |
Paolo Bonzini | fc19f8a | 2012-03-07 11:05:34 +0100 | [diff] [blame] | 1005 | if (qemu_pipe(stderr_fd) < 0) { |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 1006 | error_report("Error setting up communication pipe: %s", |
| 1007 | strerror(errno)); |
| 1008 | exit(EXIT_FAILURE); |
Paolo Bonzini | c1f8fdc | 2011-11-04 15:51:22 +0100 | [diff] [blame] | 1009 | } |
| 1010 | |
| 1011 | /* Now daemonize, but keep a communication channel open to |
| 1012 | * print errors and exit with the proper status code. |
| 1013 | */ |
| 1014 | pid = fork(); |
Max Reitz | 70d4739 | 2015-02-25 13:08:22 -0500 | [diff] [blame] | 1015 | if (pid < 0) { |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 1016 | error_report("Failed to fork: %s", strerror(errno)); |
| 1017 | exit(EXIT_FAILURE); |
Max Reitz | 70d4739 | 2015-02-25 13:08:22 -0500 | [diff] [blame] | 1018 | } else if (pid == 0) { |
Paolo Bonzini | c1f8fdc | 2011-11-04 15:51:22 +0100 | [diff] [blame] | 1019 | close(stderr_fd[0]); |
Max Reitz | e6df58a | 2019-05-08 23:18:18 +0200 | [diff] [blame] | 1020 | |
| 1021 | old_stderr = dup(STDERR_FILENO); |
Michael Tokarev | 9faf31b | 2012-01-16 18:37:44 +0400 | [diff] [blame] | 1022 | ret = qemu_daemon(1, 0); |
Paolo Bonzini | c1f8fdc | 2011-11-04 15:51:22 +0100 | [diff] [blame] | 1023 | |
| 1024 | /* Temporarily redirect stderr to the parent's pipe... */ |
| 1025 | dup2(stderr_fd[1], STDERR_FILENO); |
Paolo Bonzini | fc19f8a | 2012-03-07 11:05:34 +0100 | [diff] [blame] | 1026 | if (ret < 0) { |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 1027 | error_report("Failed to daemonize: %s", strerror(errno)); |
| 1028 | exit(EXIT_FAILURE); |
Paolo Bonzini | c1f8fdc | 2011-11-04 15:51:22 +0100 | [diff] [blame] | 1029 | } |
| 1030 | |
| 1031 | /* ... close the descriptor we inherited and go on. */ |
| 1032 | close(stderr_fd[1]); |
| 1033 | } else { |
| 1034 | bool errors = false; |
| 1035 | char *buf; |
| 1036 | |
| 1037 | /* In the parent. Print error messages from the child until |
| 1038 | * it closes the pipe. |
| 1039 | */ |
| 1040 | close(stderr_fd[1]); |
| 1041 | buf = g_malloc(1024); |
| 1042 | while ((ret = read(stderr_fd[0], buf, 1024)) > 0) { |
| 1043 | errors = true; |
| 1044 | ret = qemu_write_full(STDERR_FILENO, buf, ret); |
Paolo Bonzini | fc19f8a | 2012-03-07 11:05:34 +0100 | [diff] [blame] | 1045 | if (ret < 0) { |
Paolo Bonzini | c1f8fdc | 2011-11-04 15:51:22 +0100 | [diff] [blame] | 1046 | exit(EXIT_FAILURE); |
| 1047 | } |
| 1048 | } |
Paolo Bonzini | fc19f8a | 2012-03-07 11:05:34 +0100 | [diff] [blame] | 1049 | if (ret < 0) { |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 1050 | error_report("Cannot read from daemon: %s", |
| 1051 | strerror(errno)); |
| 1052 | exit(EXIT_FAILURE); |
Paolo Bonzini | c1f8fdc | 2011-11-04 15:51:22 +0100 | [diff] [blame] | 1053 | } |
| 1054 | |
| 1055 | /* Usually the daemon should not print any message. |
| 1056 | * Exit with zero status in that case. |
| 1057 | */ |
| 1058 | exit(errors); |
| 1059 | } |
| 1060 | } |
| 1061 | |
Paolo Bonzini | a6ac231 | 2011-12-06 09:07:00 +0100 | [diff] [blame] | 1062 | if (device != NULL && sockpath == NULL) { |
| 1063 | sockpath = g_malloc(128); |
| 1064 | snprintf(sockpath, 128, SOCKET_PATH, basename(device)); |
ths | cd831bd | 2008-07-03 10:23:51 +0000 | [diff] [blame] | 1065 | } |
| 1066 | |
Daniel P. Berrange | e4849c1 | 2017-12-18 10:16:43 +0000 | [diff] [blame] | 1067 | server = qio_net_listener_new(); |
Richard W.M. Jones | a721f53 | 2017-02-04 10:03:17 +0000 | [diff] [blame] | 1068 | if (socket_activation == 0) { |
Richard W.M. Jones | a721f53 | 2017-02-04 10:03:17 +0000 | [diff] [blame] | 1069 | saddr = nbd_build_socket_address(sockpath, bindto, port); |
Juan Quintela | fc8135c | 2019-08-19 18:08:21 +0200 | [diff] [blame] | 1070 | if (qio_net_listener_open_sync(server, saddr, 1, &local_err) < 0) { |
Daniel P. Berrange | e4849c1 | 2017-12-18 10:16:43 +0000 | [diff] [blame] | 1071 | object_unref(OBJECT(server)); |
Richard W.M. Jones | a721f53 | 2017-02-04 10:03:17 +0000 | [diff] [blame] | 1072 | error_report_err(local_err); |
Daniel P. Berrange | e4849c1 | 2017-12-18 10:16:43 +0000 | [diff] [blame] | 1073 | exit(EXIT_FAILURE); |
Richard W.M. Jones | a721f53 | 2017-02-04 10:03:17 +0000 | [diff] [blame] | 1074 | } |
| 1075 | } else { |
Daniel P. Berrange | e4849c1 | 2017-12-18 10:16:43 +0000 | [diff] [blame] | 1076 | size_t i; |
Richard W.M. Jones | a721f53 | 2017-02-04 10:03:17 +0000 | [diff] [blame] | 1077 | /* See comment in check_socket_activation above. */ |
Daniel P. Berrange | e4849c1 | 2017-12-18 10:16:43 +0000 | [diff] [blame] | 1078 | for (i = 0; i < socket_activation; i++) { |
| 1079 | QIOChannelSocket *sioc; |
| 1080 | sioc = qio_channel_socket_new_fd(FIRST_SOCKET_ACTIVATION_FD + i, |
| 1081 | &local_err); |
| 1082 | if (sioc == NULL) { |
| 1083 | object_unref(OBJECT(server)); |
| 1084 | error_report("Failed to use socket activation: %s", |
| 1085 | error_get_pretty(local_err)); |
| 1086 | exit(EXIT_FAILURE); |
| 1087 | } |
| 1088 | qio_net_listener_add(server, sioc); |
| 1089 | object_unref(OBJECT(sioc)); |
Richard W.M. Jones | a721f53 | 2017-02-04 10:03:17 +0000 | [diff] [blame] | 1090 | } |
| 1091 | } |
Daniel P. Berrange | 48bec07 | 2015-09-16 14:52:23 +0100 | [diff] [blame] | 1092 | |
Chrysostomos Nanakos | 2f78e49 | 2014-09-18 14:30:49 +0300 | [diff] [blame] | 1093 | if (qemu_init_main_loop(&local_err)) { |
Markus Armbruster | 565f65d | 2015-02-12 13:55:05 +0100 | [diff] [blame] | 1094 | error_report_err(local_err); |
Chrysostomos Nanakos | 2f78e49 | 2014-09-18 14:30:49 +0300 | [diff] [blame] | 1095 | exit(EXIT_FAILURE); |
| 1096 | } |
Paolo Bonzini | 802ddc3 | 2011-11-04 15:51:24 +0100 | [diff] [blame] | 1097 | bdrv_init(); |
Kevin Wolf | b3b5299 | 2018-05-16 13:46:37 +0200 | [diff] [blame] | 1098 | atexit(qemu_nbd_shutdown); |
Paolo Bonzini | 802ddc3 | 2011-11-04 15:51:24 +0100 | [diff] [blame] | 1099 | |
Daniel P. Berrange | 77c9aae | 2016-02-17 10:10:19 +0000 | [diff] [blame] | 1100 | srcpath = argv[optind]; |
| 1101 | if (imageOpts) { |
| 1102 | QemuOpts *opts; |
| 1103 | if (fmt) { |
| 1104 | error_report("--image-opts and -f are mutually exclusive"); |
| 1105 | exit(EXIT_FAILURE); |
| 1106 | } |
| 1107 | opts = qemu_opts_parse_noisily(&file_opts, srcpath, true); |
| 1108 | if (!opts) { |
| 1109 | qemu_opts_reset(&file_opts); |
| 1110 | exit(EXIT_FAILURE); |
| 1111 | } |
| 1112 | options = qemu_opts_to_qdict(opts, NULL); |
| 1113 | qemu_opts_reset(&file_opts); |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 1114 | blk = blk_new_open(NULL, NULL, options, flags, &local_err); |
Daniel P. Berrange | 77c9aae | 2016-02-17 10:10:19 +0000 | [diff] [blame] | 1115 | } else { |
| 1116 | if (fmt) { |
| 1117 | options = qdict_new(); |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 1118 | qdict_put_str(options, "driver", fmt); |
Daniel P. Berrange | 77c9aae | 2016-02-17 10:10:19 +0000 | [diff] [blame] | 1119 | } |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 1120 | blk = blk_new_open(srcpath, NULL, options, flags, &local_err); |
Daniel P. Berrange | e6b6367 | 2013-03-19 11:20:20 +0000 | [diff] [blame] | 1121 | } |
| 1122 | |
Max Reitz | 4fbec26 | 2015-02-05 13:58:19 -0500 | [diff] [blame] | 1123 | if (!blk) { |
Markus Armbruster | c29b77f | 2015-12-18 16:35:14 +0100 | [diff] [blame] | 1124 | error_reportf_err(local_err, "Failed to blk_new_open '%s': ", |
| 1125 | argv[optind]); |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 1126 | exit(EXIT_FAILURE); |
Paolo Bonzini | 802ddc3 | 2011-11-04 15:51:24 +0100 | [diff] [blame] | 1127 | } |
Max Reitz | 4fbec26 | 2015-02-05 13:58:19 -0500 | [diff] [blame] | 1128 | bs = blk_bs(blk); |
Paolo Bonzini | 802ddc3 | 2011-11-04 15:51:24 +0100 | [diff] [blame] | 1129 | |
Kevin Wolf | 6effd5b | 2016-03-14 11:43:28 +0100 | [diff] [blame] | 1130 | blk_set_enable_write_cache(blk, !writethrough); |
| 1131 | |
Wenchao Xia | 8c116b0 | 2013-12-04 17:10:55 +0800 | [diff] [blame] | 1132 | if (sn_opts) { |
| 1133 | ret = bdrv_snapshot_load_tmp(bs, |
| 1134 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), |
| 1135 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), |
| 1136 | &local_err); |
| 1137 | } else if (sn_id_or_name) { |
| 1138 | ret = bdrv_snapshot_load_tmp_by_id_or_name(bs, sn_id_or_name, |
| 1139 | &local_err); |
| 1140 | } |
| 1141 | if (ret < 0) { |
Markus Armbruster | c29b77f | 2015-12-18 16:35:14 +0100 | [diff] [blame] | 1142 | error_reportf_err(local_err, "Failed to load snapshot: "); |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 1143 | exit(EXIT_FAILURE); |
Wenchao Xia | 8c116b0 | 2013-12-04 17:10:55 +0800 | [diff] [blame] | 1144 | } |
| 1145 | |
Peter Lieven | b3838a4 | 2014-08-13 19:20:18 +0200 | [diff] [blame] | 1146 | bs->detect_zeroes = detect_zeroes; |
Max Reitz | 4c58e80 | 2014-11-18 12:21:19 +0100 | [diff] [blame] | 1147 | fd_size = blk_getlength(blk); |
Max Reitz | 98f44bb | 2015-02-25 13:08:21 -0500 | [diff] [blame] | 1148 | if (fd_size < 0) { |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 1149 | error_report("Failed to determine the image length: %s", |
| 1150 | strerror(-fd_size)); |
| 1151 | exit(EXIT_FAILURE); |
Max Reitz | 98f44bb | 2015-02-25 13:08:21 -0500 | [diff] [blame] | 1152 | } |
Paolo Bonzini | 802ddc3 | 2011-11-04 15:51:24 +0100 | [diff] [blame] | 1153 | |
Tomáš Golembiovský | e424b65 | 2016-10-05 23:40:20 +0200 | [diff] [blame] | 1154 | if (dev_offset >= fd_size) { |
Eric Blake | 9d26dfc | 2019-01-17 13:36:43 -0600 | [diff] [blame] | 1155 | error_report("Offset (%" PRIu64 ") has to be smaller than the image " |
| 1156 | "size (%" PRId64 ")", dev_offset, fd_size); |
Tomáš Golembiovský | e424b65 | 2016-10-05 23:40:20 +0200 | [diff] [blame] | 1157 | exit(EXIT_FAILURE); |
| 1158 | } |
| 1159 | fd_size -= dev_offset; |
| 1160 | |
Eric Blake | 43b5101 | 2019-01-17 13:36:44 -0600 | [diff] [blame] | 1161 | if (partition) { |
Eric Blake | 9d26dfc | 2019-01-17 13:36:43 -0600 | [diff] [blame] | 1162 | uint64_t limit; |
Eric Blake | 4485936 | 2019-01-17 13:36:41 -0600 | [diff] [blame] | 1163 | |
| 1164 | if (dev_offset) { |
| 1165 | error_report("Cannot request partition and offset together"); |
| 1166 | exit(EXIT_FAILURE); |
| 1167 | } |
| 1168 | ret = find_partition(blk, partition, &dev_offset, &limit); |
Paolo Bonzini | 185b433 | 2012-03-05 08:56:10 +0100 | [diff] [blame] | 1169 | if (ret < 0) { |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 1170 | error_report("Could not find partition %d: %s", partition, |
Markus Armbruster | a4699e5 | 2015-12-18 16:35:10 +0100 | [diff] [blame] | 1171 | strerror(-ret)); |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 1172 | exit(EXIT_FAILURE); |
Paolo Bonzini | 185b433 | 2012-03-05 08:56:10 +0100 | [diff] [blame] | 1173 | } |
Eric Blake | 4485936 | 2019-01-17 13:36:41 -0600 | [diff] [blame] | 1174 | /* |
| 1175 | * MBR partition limits are (32-bit << 9); this assert lets |
Eric Blake | 9d26dfc | 2019-01-17 13:36:43 -0600 | [diff] [blame] | 1176 | * the compiler know that we can't overflow 64 bits. |
Eric Blake | 4485936 | 2019-01-17 13:36:41 -0600 | [diff] [blame] | 1177 | */ |
Eric Blake | 9d26dfc | 2019-01-17 13:36:43 -0600 | [diff] [blame] | 1178 | assert(dev_offset + limit >= dev_offset); |
Eric Blake | 4485936 | 2019-01-17 13:36:41 -0600 | [diff] [blame] | 1179 | if (dev_offset + limit > fd_size) { |
Eric Blake | 9d26dfc | 2019-01-17 13:36:43 -0600 | [diff] [blame] | 1180 | error_report("Discovered partition %d at offset %" PRIu64 |
| 1181 | " size %" PRIu64 ", but size exceeds file length %" |
| 1182 | PRId64, partition, dev_offset, limit, fd_size); |
Eric Blake | 4485936 | 2019-01-17 13:36:41 -0600 | [diff] [blame] | 1183 | exit(EXIT_FAILURE); |
| 1184 | } |
| 1185 | fd_size = limit; |
Paolo Bonzini | 802ddc3 | 2011-11-04 15:51:24 +0100 | [diff] [blame] | 1186 | } |
| 1187 | |
Eric Blake | 3fa4c76 | 2019-01-11 13:47:16 -0600 | [diff] [blame] | 1188 | export = nbd_export_new(bs, dev_offset, fd_size, export_name, |
Eric Blake | dbb38ca | 2019-08-23 09:37:22 -0500 | [diff] [blame] | 1189 | export_description, bitmap, readonly, shared > 1, |
Eric Blake | 678ba27 | 2019-01-11 13:47:19 -0600 | [diff] [blame] | 1190 | nbd_export_closed, writethrough, NULL, |
| 1191 | &error_fatal); |
ths | 3b05a8e | 2008-07-03 12:45:02 +0000 | [diff] [blame] | 1192 | |
Paolo Bonzini | f1ef555 | 2011-11-04 15:51:23 +0100 | [diff] [blame] | 1193 | if (device) { |
Eric Blake | 3c1fa35 | 2018-12-15 07:53:08 -0600 | [diff] [blame] | 1194 | #if HAVE_NBD_DEVICE |
Paolo Bonzini | f1ef555 | 2011-11-04 15:51:23 +0100 | [diff] [blame] | 1195 | int ret; |
| 1196 | |
Paolo Bonzini | a6ac231 | 2011-12-06 09:07:00 +0100 | [diff] [blame] | 1197 | ret = pthread_create(&client_thread, NULL, nbd_client_thread, device); |
Paolo Bonzini | f1ef555 | 2011-11-04 15:51:23 +0100 | [diff] [blame] | 1198 | if (ret != 0) { |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 1199 | error_report("Failed to create client thread: %s", strerror(ret)); |
| 1200 | exit(EXIT_FAILURE); |
Paolo Bonzini | f1ef555 | 2011-11-04 15:51:23 +0100 | [diff] [blame] | 1201 | } |
Eric Blake | 3c1fa35 | 2018-12-15 07:53:08 -0600 | [diff] [blame] | 1202 | #endif |
Paolo Bonzini | f1ef555 | 2011-11-04 15:51:23 +0100 | [diff] [blame] | 1203 | } else { |
| 1204 | /* Shut up GCC warnings. */ |
| 1205 | memset(&client_thread, 0, sizeof(client_thread)); |
| 1206 | } |
| 1207 | |
Daniel P. Berrange | d0d6ff5 | 2016-02-10 18:41:02 +0000 | [diff] [blame] | 1208 | nbd_update_server_watch(); |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 1209 | |
Max Reitz | 637bc5a | 2019-05-08 23:18:16 +0200 | [diff] [blame] | 1210 | if (pid_file_name) { |
| 1211 | qemu_write_pidfile(pid_file_name, &error_fatal); |
| 1212 | } |
| 1213 | |
Michael Tokarev | 9faf31b | 2012-01-16 18:37:44 +0400 | [diff] [blame] | 1214 | /* now when the initialization is (almost) complete, chdir("/") |
| 1215 | * to free any busy filesystems */ |
| 1216 | if (chdir("/") < 0) { |
Markus Armbruster | 85b01e0 | 2015-12-18 16:35:04 +0100 | [diff] [blame] | 1217 | error_report("Could not chdir to root directory: %s", |
| 1218 | strerror(errno)); |
| 1219 | exit(EXIT_FAILURE); |
Michael Tokarev | 9faf31b | 2012-01-16 18:37:44 +0400 | [diff] [blame] | 1220 | } |
| 1221 | |
Max Reitz | ffb31e1 | 2016-09-28 22:46:42 +0200 | [diff] [blame] | 1222 | if (fork_process) { |
| 1223 | dup2(old_stderr, STDERR_FILENO); |
| 1224 | close(old_stderr); |
| 1225 | } |
| 1226 | |
Paolo Bonzini | 7860a38 | 2012-09-18 13:31:56 +0200 | [diff] [blame] | 1227 | state = RUNNING; |
ths | 3b05a8e | 2008-07-03 12:45:02 +0000 | [diff] [blame] | 1228 | do { |
Paolo Bonzini | a61c678 | 2011-09-12 17:28:11 +0200 | [diff] [blame] | 1229 | main_loop_wait(false); |
Paolo Bonzini | 7860a38 | 2012-09-18 13:31:56 +0200 | [diff] [blame] | 1230 | if (state == TERMINATE) { |
| 1231 | state = TERMINATING; |
Philippe Mathieu-Daudé | 9d97658 | 2019-01-11 17:35:19 +0100 | [diff] [blame] | 1232 | nbd_export_close(export); |
| 1233 | nbd_export_put(export); |
| 1234 | export = NULL; |
Paolo Bonzini | 7860a38 | 2012-09-18 13:31:56 +0200 | [diff] [blame] | 1235 | } |
| 1236 | } while (state != TERMINATED); |
ths | 3b05a8e | 2008-07-03 12:45:02 +0000 | [diff] [blame] | 1237 | |
Markus Armbruster | 26f54e9 | 2014-10-07 13:59:04 +0200 | [diff] [blame] | 1238 | blk_unref(blk); |
Paolo Bonzini | b32f6c2 | 2011-11-04 15:51:20 +0100 | [diff] [blame] | 1239 | if (sockpath) { |
| 1240 | unlink(sockpath); |
| 1241 | } |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 1242 | |
Markus Armbruster | fbf28a4 | 2014-09-29 16:07:55 +0200 | [diff] [blame] | 1243 | qemu_opts_del(sn_opts); |
Wenchao Xia | 8c116b0 | 2013-12-04 17:10:55 +0800 | [diff] [blame] | 1244 | |
Paolo Bonzini | a517e88 | 2011-11-04 15:51:21 +0100 | [diff] [blame] | 1245 | if (device) { |
| 1246 | void *ret; |
| 1247 | pthread_join(client_thread, &ret); |
| 1248 | exit(ret != NULL); |
| 1249 | } else { |
| 1250 | exit(EXIT_SUCCESS); |
| 1251 | } |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 1252 | } |