diff options
author | Anthony Liguori <aliguori@us.ibm.com> | 2013-03-22 13:08:01 -0500 |
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committer | Anthony Liguori <aliguori@us.ibm.com> | 2013-03-22 13:08:01 -0500 |
commit | 3f08ffb4a4741d147634761dc053ed386243a0de (patch) | |
tree | ebc0b8c95f5cf26fcb45324534e0846834d0cab7 | |
parent | cecd77ae6df060bbe8f0eea6691112097e680a52 (diff) | |
parent | 681e7ad024d80123a1ae8e35f86fb1a7f03b1bc9 (diff) | |
download | hqemu-3f08ffb4a4741d147634761dc053ed386243a0de.zip hqemu-3f08ffb4a4741d147634761dc053ed386243a0de.tar.gz |
Merge remote-tracking branch 'kwolf/for-anthony' into staging
# By Kevin Wolf (12) and Peter Lieven (2)
# Via Kevin Wolf
* kwolf/for-anthony:
nbd: Check against invalid option combinations
nbd: Use default port if only host is specified
block: Allow omitting the file name when using driver-specific options
block: Make find_image_format safe with NULL filename
block: Rename variable to avoid shadowing
block: Introduce .bdrv_parse_filename callback
nbd: Accept -drive options for the network connection
nbd: Remove unused functions
nbd: Keep hostname and port separate
qemu-socket: Make socket_optslist public
block: Pass bdrv_file_open() options to block drivers
block: Add options QDict to bdrv_file_open() prototypes
block: complete all IOs before resizing a device
Revert "block: complete all IOs before .bdrv_truncate"
-rw-r--r-- | block.c | 143 | ||||
-rw-r--r-- | block/blkdebug.c | 5 | ||||
-rw-r--r-- | block/blkverify.c | 5 | ||||
-rw-r--r-- | block/cow.c | 2 | ||||
-rw-r--r-- | block/curl.c | 3 | ||||
-rw-r--r-- | block/dmg.c | 13 | ||||
-rw-r--r-- | block/gluster.c | 2 | ||||
-rw-r--r-- | block/iscsi.c | 5 | ||||
-rw-r--r-- | block/nbd.c | 135 | ||||
-rw-r--r-- | block/qcow.c | 2 | ||||
-rw-r--r-- | block/qcow2.c | 2 | ||||
-rw-r--r-- | block/qed.c | 2 | ||||
-rw-r--r-- | block/raw-posix.c | 15 | ||||
-rw-r--r-- | block/sheepdog.c | 7 | ||||
-rw-r--r-- | block/vmdk.c | 2 | ||||
-rw-r--r-- | block/vvfat.c | 3 | ||||
-rw-r--r-- | blockdev.c | 13 | ||||
-rw-r--r-- | include/block/block.h | 3 | ||||
-rw-r--r-- | include/block/block_int.h | 7 | ||||
-rw-r--r-- | include/block/nbd.h | 4 | ||||
-rw-r--r-- | include/qemu/sockets.h | 3 | ||||
-rw-r--r-- | nbd.c | 13 | ||||
-rw-r--r-- | qemu-io.c | 2 | ||||
-rw-r--r-- | util/qemu-sockets.c | 30 |
24 files changed, 308 insertions, 113 deletions
@@ -676,7 +676,7 @@ static int bdrv_open_common(BlockDriverState *bs, BlockDriverState *file, assert(drv != NULL); assert(bs->file == NULL); - assert(options == NULL || bs->options != options); + assert(options != NULL && bs->options != options); trace_bdrv_open_common(bs, filename, flags, drv->format_name); @@ -688,7 +688,11 @@ static int bdrv_open_common(BlockDriverState *bs, BlockDriverState *file, bdrv_enable_copy_on_read(bs); } - pstrcpy(bs->filename, sizeof(bs->filename), filename); + if (filename != NULL) { + pstrcpy(bs->filename, sizeof(bs->filename), filename); + } else { + bs->filename[0] = '\0'; + } if (use_bdrv_whitelist && !bdrv_is_whitelisted(drv)) { return -ENOTSUP; @@ -708,7 +712,8 @@ static int bdrv_open_common(BlockDriverState *bs, BlockDriverState *file, bdrv_swap(file, bs); ret = 0; } else { - ret = drv->bdrv_file_open(bs, filename, open_flags); + assert(drv->bdrv_parse_filename || filename != NULL); + ret = drv->bdrv_file_open(bs, filename, options, open_flags); } } else { assert(file != NULL); @@ -727,6 +732,7 @@ static int bdrv_open_common(BlockDriverState *bs, BlockDriverState *file, #ifndef _WIN32 if (bs->is_temporary) { + assert(filename != NULL); unlink(filename); } #endif @@ -742,27 +748,92 @@ free_and_fail: /* * Opens a file using a protocol (file, host_device, nbd, ...) + * + * options is a QDict of options to pass to the block drivers, or NULL for an + * empty set of options. The reference to the QDict belongs to the block layer + * after the call (even on failure), so if the caller intends to reuse the + * dictionary, it needs to use QINCREF() before calling bdrv_file_open. */ -int bdrv_file_open(BlockDriverState **pbs, const char *filename, int flags) +int bdrv_file_open(BlockDriverState **pbs, const char *filename, + QDict *options, int flags) { BlockDriverState *bs; BlockDriver *drv; + const char *drvname; int ret; - drv = bdrv_find_protocol(filename); - if (!drv) { - return -ENOENT; + /* NULL means an empty set of options */ + if (options == NULL) { + options = qdict_new(); } bs = bdrv_new(""); - ret = bdrv_open_common(bs, NULL, filename, NULL, flags, drv); + bs->options = options; + options = qdict_clone_shallow(options); + + /* Find the right block driver */ + drvname = qdict_get_try_str(options, "driver"); + if (drvname) { + drv = bdrv_find_whitelisted_format(drvname); + qdict_del(options, "driver"); + } else if (filename) { + drv = bdrv_find_protocol(filename); + } else { + qerror_report(ERROR_CLASS_GENERIC_ERROR, + "Must specify either driver or file"); + drv = NULL; + } + + if (!drv) { + ret = -ENOENT; + goto fail; + } + + /* Parse the filename and open it */ + if (drv->bdrv_parse_filename && filename) { + Error *local_err = NULL; + drv->bdrv_parse_filename(filename, options, &local_err); + if (error_is_set(&local_err)) { + qerror_report_err(local_err); + error_free(local_err); + ret = -EINVAL; + goto fail; + } + } else if (!drv->bdrv_parse_filename && !filename) { + qerror_report(ERROR_CLASS_GENERIC_ERROR, + "The '%s' block driver requires a file name", + drv->format_name); + ret = -EINVAL; + goto fail; + } + + ret = bdrv_open_common(bs, NULL, filename, options, flags, drv); if (ret < 0) { - bdrv_delete(bs); - return ret; + goto fail; } + + /* Check if any unknown options were used */ + if (qdict_size(options) != 0) { + const QDictEntry *entry = qdict_first(options); + qerror_report(ERROR_CLASS_GENERIC_ERROR, "Block protocol '%s' doesn't " + "support the option '%s'", + drv->format_name, entry->key); + ret = -EINVAL; + goto fail; + } + QDECREF(options); + bs->growable = 1; *pbs = bs; return 0; + +fail: + QDECREF(options); + if (!bs->drv) { + QDECREF(bs->options); + } + bdrv_delete(bs); + return ret; } int bdrv_open_backing_file(BlockDriverState *bs) @@ -802,6 +873,25 @@ int bdrv_open_backing_file(BlockDriverState *bs) return 0; } +static void extract_subqdict(QDict *src, QDict **dst, const char *start) +{ + const QDictEntry *entry, *next; + const char *p; + + *dst = qdict_new(); + entry = qdict_first(src); + + while (entry != NULL) { + next = qdict_next(src, entry); + if (strstart(entry->key, start, &p)) { + qobject_incref(entry->value); + qdict_put_obj(*dst, p, entry->value); + qdict_del(src, entry->key); + } + entry = next; + } +} + /* * Opens a disk image (raw, qcow2, vmdk, ...) * @@ -817,6 +907,7 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options, /* TODO: extra byte is a hack to ensure MAX_PATH space on Windows. */ char tmp_filename[PATH_MAX + 1]; BlockDriverState *file = NULL; + QDict *file_options = NULL; /* NULL means an empty set of options */ if (options == NULL) { @@ -831,9 +922,16 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options, BlockDriverState *bs1; int64_t total_size; BlockDriver *bdrv_qcow2; - QEMUOptionParameter *options; + QEMUOptionParameter *create_options; char backing_filename[PATH_MAX]; + if (qdict_size(options) != 0) { + error_report("Can't use snapshot=on with driver-specific options"); + ret = -EINVAL; + goto fail; + } + assert(filename != NULL); + /* if snapshot, we create a temporary backing file and open it instead of opening 'filename' directly */ @@ -863,17 +961,19 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options, } bdrv_qcow2 = bdrv_find_format("qcow2"); - options = parse_option_parameters("", bdrv_qcow2->create_options, NULL); + create_options = parse_option_parameters("", bdrv_qcow2->create_options, + NULL); - set_option_parameter_int(options, BLOCK_OPT_SIZE, total_size); - set_option_parameter(options, BLOCK_OPT_BACKING_FILE, backing_filename); + set_option_parameter_int(create_options, BLOCK_OPT_SIZE, total_size); + set_option_parameter(create_options, BLOCK_OPT_BACKING_FILE, + backing_filename); if (drv) { - set_option_parameter(options, BLOCK_OPT_BACKING_FMT, + set_option_parameter(create_options, BLOCK_OPT_BACKING_FMT, drv->format_name); } - ret = bdrv_create(bdrv_qcow2, tmp_filename, options); - free_option_parameters(options); + ret = bdrv_create(bdrv_qcow2, tmp_filename, create_options); + free_option_parameters(create_options); if (ret < 0) { goto fail; } @@ -888,7 +988,10 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options, flags |= BDRV_O_ALLOW_RDWR; } - ret = bdrv_file_open(&file, filename, bdrv_open_flags(bs, flags)); + extract_subqdict(options, &file_options, "file."); + + ret = bdrv_file_open(&file, filename, file_options, + bdrv_open_flags(bs, flags)); if (ret < 0) { goto fail; } @@ -2487,10 +2590,6 @@ int bdrv_truncate(BlockDriverState *bs, int64_t offset) return -EACCES; if (bdrv_in_use(bs)) return -EBUSY; - - /* There better not be any in-flight IOs when we truncate the device. */ - bdrv_drain_all(); - ret = drv->bdrv_truncate(bs, offset); if (ret == 0) { ret = refresh_total_sectors(bs, offset >> BDRV_SECTOR_BITS); diff --git a/block/blkdebug.c b/block/blkdebug.c index 6f74637..37cfbc7 100644 --- a/block/blkdebug.c +++ b/block/blkdebug.c @@ -304,7 +304,8 @@ fail: } /* Valid blkdebug filenames look like blkdebug:path/to/config:path/to/image */ -static int blkdebug_open(BlockDriverState *bs, const char *filename, int flags) +static int blkdebug_open(BlockDriverState *bs, const char *filename, + QDict *options, int flags) { BDRVBlkdebugState *s = bs->opaque; int ret; @@ -335,7 +336,7 @@ static int blkdebug_open(BlockDriverState *bs, const char *filename, int flags) s->state = 1; /* Open the backing file */ - ret = bdrv_file_open(&bs->file, filename, flags); + ret = bdrv_file_open(&bs->file, filename, NULL, flags); if (ret < 0) { return ret; } diff --git a/block/blkverify.c b/block/blkverify.c index 2086d97..59e3b05 100644 --- a/block/blkverify.c +++ b/block/blkverify.c @@ -69,7 +69,8 @@ static void GCC_FMT_ATTR(2, 3) blkverify_err(BlkverifyAIOCB *acb, } /* Valid blkverify filenames look like blkverify:path/to/raw_image:path/to/image */ -static int blkverify_open(BlockDriverState *bs, const char *filename, int flags) +static int blkverify_open(BlockDriverState *bs, const char *filename, + QDict *options, int flags) { BDRVBlkverifyState *s = bs->opaque; int ret; @@ -89,7 +90,7 @@ static int blkverify_open(BlockDriverState *bs, const char *filename, int flags) raw = g_strdup(filename); raw[c - filename] = '\0'; - ret = bdrv_file_open(&bs->file, raw, flags); + ret = bdrv_file_open(&bs->file, raw, NULL, flags); g_free(raw); if (ret < 0) { return ret; diff --git a/block/cow.c b/block/cow.c index d73e08c..9f94599 100644 --- a/block/cow.c +++ b/block/cow.c @@ -279,7 +279,7 @@ static int cow_create(const char *filename, QEMUOptionParameter *options) return ret; } - ret = bdrv_file_open(&cow_bs, filename, BDRV_O_RDWR); + ret = bdrv_file_open(&cow_bs, filename, NULL, BDRV_O_RDWR); if (ret < 0) { return ret; } diff --git a/block/curl.c b/block/curl.c index 98947da..186e3b0 100644 --- a/block/curl.c +++ b/block/curl.c @@ -335,7 +335,8 @@ static void curl_clean_state(CURLState *s) s->in_use = 0; } -static int curl_open(BlockDriverState *bs, const char *filename, int flags) +static int curl_open(BlockDriverState *bs, const char *filename, + QDict *options, int flags) { BDRVCURLState *s = bs->opaque; CURLState *state = NULL; diff --git a/block/dmg.c b/block/dmg.c index c1066df..3141cb5 100644 --- a/block/dmg.c +++ b/block/dmg.c @@ -51,9 +51,16 @@ typedef struct BDRVDMGState { static int dmg_probe(const uint8_t *buf, int buf_size, const char *filename) { - int len=strlen(filename); - if(len>4 && !strcmp(filename+len-4,".dmg")) - return 2; + int len; + + if (!filename) { + return 0; + } + + len = strlen(filename); + if (len > 4 && !strcmp(filename + len - 4, ".dmg")) { + return 2; + } return 0; } diff --git a/block/gluster.c b/block/gluster.c index ccd684d..9ccd4d4 100644 --- a/block/gluster.c +++ b/block/gluster.c @@ -283,7 +283,7 @@ static int qemu_gluster_aio_flush_cb(void *opaque) } static int qemu_gluster_open(BlockDriverState *bs, const char *filename, - int bdrv_flags) + QDict *options, int bdrv_flags) { BDRVGlusterState *s = bs->opaque; int open_flags = O_BINARY; diff --git a/block/iscsi.c b/block/iscsi.c index 3d52921..51a2889 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -1007,7 +1007,8 @@ out: * We support iscsi url's on the form * iscsi://[<username>%<password>@]<host>[:<port>]/<targetname>/<lun> */ -static int iscsi_open(BlockDriverState *bs, const char *filename, int flags) +static int iscsi_open(BlockDriverState *bs, const char *filename, + QDict *options, int flags) { IscsiLun *iscsilun = bs->opaque; struct iscsi_context *iscsi = NULL; @@ -1203,7 +1204,7 @@ static int iscsi_create(const char *filename, QEMUOptionParameter *options) bs.opaque = g_malloc0(sizeof(struct IscsiLun)); iscsilun = bs.opaque; - ret = iscsi_open(&bs, filename, 0); + ret = iscsi_open(&bs, filename, NULL, 0); if (ret != 0) { goto out; } diff --git a/block/nbd.c b/block/nbd.c index a581294..3d711b2 100644 --- a/block/nbd.c +++ b/block/nbd.c @@ -32,6 +32,8 @@ #include "block/block_int.h" #include "qemu/module.h" #include "qemu/sockets.h" +#include "qapi/qmp/qjson.h" +#include "qapi/qmp/qint.h" #include <sys/types.h> #include <unistd.h> @@ -65,17 +67,19 @@ typedef struct BDRVNBDState { Coroutine *recv_coroutine[MAX_NBD_REQUESTS]; struct nbd_reply reply; - int is_unix; - char *host_spec; + bool is_unix; + QemuOpts *socket_opts; + char *export_name; /* An NBD server may export several devices */ } BDRVNBDState; -static int nbd_parse_uri(BDRVNBDState *s, const char *filename) +static int nbd_parse_uri(const char *filename, QDict *options) { URI *uri; const char *p; QueryParams *qp = NULL; int ret = 0; + bool is_unix; uri = uri_parse(filename); if (!uri) { @@ -84,11 +88,11 @@ static int nbd_parse_uri(BDRVNBDState *s, const char *filename) /* transport */ if (!strcmp(uri->scheme, "nbd")) { - s->is_unix = false; + is_unix = false; } else if (!strcmp(uri->scheme, "nbd+tcp")) { - s->is_unix = false; + is_unix = false; } else if (!strcmp(uri->scheme, "nbd+unix")) { - s->is_unix = true; + is_unix = true; } else { ret = -EINVAL; goto out; @@ -97,32 +101,35 @@ static int nbd_parse_uri(BDRVNBDState *s, const char *filename) p = uri->path ? uri->path : "/"; p += strspn(p, "/"); if (p[0]) { - s->export_name = g_strdup(p); + qdict_put(options, "export", qstring_from_str(p)); } qp = query_params_parse(uri->query); - if (qp->n > 1 || (s->is_unix && !qp->n) || (!s->is_unix && qp->n)) { + if (qp->n > 1 || (is_unix && !qp->n) || (!is_unix && qp->n)) { ret = -EINVAL; goto out; } - if (s->is_unix) { + if (is_unix) { /* nbd+unix:///export?socket=path */ if (uri->server || uri->port || strcmp(qp->p[0].name, "socket")) { ret = -EINVAL; goto out; } - s->host_spec = g_strdup(qp->p[0].value); + qdict_put(options, "path", qstring_from_str(qp->p[0].value)); } else { - /* nbd[+tcp]://host:port/export */ + /* nbd[+tcp]://host[:port]/export */ if (!uri->server) { ret = -EINVAL; goto out; } - if (!uri->port) { - uri->port = NBD_DEFAULT_PORT; + + qdict_put(options, "host", qstring_from_str(uri->server)); + if (uri->port) { + char* port_str = g_strdup_printf("%d", uri->port); + qdict_put(options, "port", qstring_from_str(port_str)); + g_free(port_str); } - s->host_spec = g_strdup_printf("%s:%d", uri->server, uri->port); } out: @@ -133,16 +140,29 @@ out: return ret; } -static int nbd_config(BDRVNBDState *s, const char *filename) +static void nbd_parse_filename(const char *filename, QDict *options, + Error **errp) { char *file; char *export_name; const char *host_spec; const char *unixpath; - int err = -EINVAL; + + if (qdict_haskey(options, "host") + || qdict_haskey(options, "port") + || qdict_haskey(options, "path")) + { + error_setg(errp, "host/port/path and a file name may not be specified " + "at the same time"); + return; + } if (strstr(filename, "://")) { - return nbd_parse_uri(s, filename); + int ret = nbd_parse_uri(filename, options); + if (ret < 0) { + error_setg(errp, "No valid URL specified"); + } + return; } file = g_strdup(filename); @@ -154,34 +174,79 @@ static int nbd_config(BDRVNBDState *s, const char *filename) } export_name[0] = 0; /* truncate 'file' */ export_name += strlen(EN_OPTSTR); - s->export_name = g_strdup(export_name); + + qdict_put(options, "export", qstring_from_str(export_name)); } /* extract the host_spec - fail if it's not nbd:... */ if (!strstart(file, "nbd:", &host_spec)) { + error_setg(errp, "File name string for NBD must start with 'nbd:'"); + goto out; + } + + if (!*host_spec) { goto out; } /* are we a UNIX or TCP socket? */ if (strstart(host_spec, "unix:", &unixpath)) { - s->is_unix = true; - s->host_spec = g_strdup(unixpath); + qdict_put(options, "path", qstring_from_str(unixpath)); } else { - s->is_unix = false; - s->host_spec = g_strdup(host_spec); - } + InetSocketAddress *addr = NULL; - err = 0; + addr = inet_parse(host_spec, errp); + if (error_is_set(errp)) { + goto out; + } + + qdict_put(options, "host", qstring_from_str(addr->host)); + qdict_put(options, "port", qstring_from_str(addr->port)); + qapi_free_InetSocketAddress(addr); + } out: g_free(file); - if (err != 0) { - g_free(s->export_name); - g_free(s->host_spec); +} + +static int nbd_config(BDRVNBDState *s, QDict *options) +{ + Error *local_err = NULL; + + if (qdict_haskey(options, "path")) { + if (qdict_haskey(options, "host")) { + qerror_report(ERROR_CLASS_GENERIC_ERROR, "path and host may not " + "be used at the same time."); + return -EINVAL; + } + s->is_unix = true; + } else if (qdict_haskey(options, "host")) { + s->is_unix = false; + } else { + return -EINVAL; } - return err; + + s->socket_opts = qemu_opts_create_nofail(&socket_optslist); + + qemu_opts_absorb_qdict(s->socket_opts, options, &local_err); + if (error_is_set(&local_err)) { + qerror_report_err(local_err); + error_free(local_err); + return -EINVAL; + } + + if (!qemu_opt_get(s->socket_opts, "port")) { + qemu_opt_set_number(s->socket_opts, "port", NBD_DEFAULT_PORT); + } + + s->export_name = g_strdup(qdict_get_try_str(options, "export")); + if (s->export_name) { + qdict_del(options, "export"); + } + + return 0; } + static void nbd_coroutine_start(BDRVNBDState *s, struct nbd_request *request) { int i; @@ -328,9 +393,9 @@ static int nbd_establish_connection(BlockDriverState *bs) size_t blocksize; if (s->is_unix) { - sock = unix_socket_outgoing(s->host_spec); + sock = unix_socket_outgoing(qemu_opt_get(s->socket_opts, "path")); } else { - sock = tcp_socket_outgoing_spec(s->host_spec); + sock = tcp_socket_outgoing_opts(s->socket_opts); } /* Failed to establish connection */ @@ -376,7 +441,8 @@ static void nbd_teardown_connection(BlockDriverState *bs) closesocket(s->sock); } -static int nbd_open(BlockDriverState *bs, const char* filename, int flags) +static int nbd_open(BlockDriverState *bs, const char* filename, + QDict *options, int flags) { BDRVNBDState *s = bs->opaque; int result; @@ -385,7 +451,7 @@ static int nbd_open(BlockDriverState *bs, const char* filename, int flags) qemu_co_mutex_init(&s->free_sema); /* Pop the config into our state object. Exit if invalid. */ - result = nbd_config(s, filename); + result = nbd_config(s, options); if (result != 0) { return result; } @@ -549,7 +615,7 @@ static void nbd_close(BlockDriverState *bs) { BDRVNBDState *s = bs->opaque; g_free(s->export_name); - g_free(s->host_spec); + qemu_opts_del(s->socket_opts); nbd_teardown_connection(bs); } @@ -565,6 +631,7 @@ static BlockDriver bdrv_nbd = { .format_name = "nbd", .protocol_name = "nbd", .instance_size = sizeof(BDRVNBDState), + .bdrv_parse_filename = nbd_parse_filename, .bdrv_file_open = nbd_open, .bdrv_co_readv = nbd_co_readv, .bdrv_co_writev = nbd_co_writev, @@ -578,6 +645,7 @@ static BlockDriver bdrv_nbd_tcp = { .format_name = "nbd", .protocol_name = "nbd+tcp", .instance_size = sizeof(BDRVNBDState), + .bdrv_parse_filename = nbd_parse_filename, .bdrv_file_open = nbd_open, .bdrv_co_readv = nbd_co_readv, .bdrv_co_writev = nbd_co_writev, @@ -591,6 +659,7 @@ static BlockDriver bdrv_nbd_unix = { .format_name = "nbd", .protocol_name = "nbd+unix", .instance_size = sizeof(BDRVNBDState), + .bdrv_parse_filename = nbd_parse_filename, .bdrv_file_open = nbd_open, .bdrv_co_readv = nbd_co_readv, .bdrv_co_writev = nbd_co_writev, diff --git a/block/qcow.c b/block/qcow.c index f6750a5..13d396b 100644 --- a/block/qcow.c +++ b/block/qcow.c @@ -679,7 +679,7 @@ static int qcow_create(const char *filename, QEMUOptionParameter *options) return ret; } - ret = bdrv_file_open(&qcow_bs, filename, BDRV_O_RDWR); + ret = bdrv_file_open(&qcow_bs, filename, NULL, BDRV_O_RDWR); if (ret < 0) { return ret; } diff --git a/block/qcow2.c b/block/qcow2.c index 98bb7f3..8ea696a 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -1254,7 +1254,7 @@ static int qcow2_create2(const char *filename, int64_t total_size, return ret; } - ret = bdrv_file_open(&bs, filename, BDRV_O_RDWR); + ret = bdrv_file_open(&bs, filename, NULL, BDRV_O_RDWR); if (ret < 0) { return ret; } diff --git a/block/qed.c b/block/qed.c index 46e12b3..4651403 100644 --- a/block/qed.c +++ b/block/qed.c @@ -558,7 +558,7 @@ static int qed_create(const char *filename, uint32_t cluster_size, return ret; } - ret = bdrv_file_open(&bs, filename, BDRV_O_RDWR | BDRV_O_CACHE_WB); + ret = bdrv_file_open(&bs, filename, NULL, BDRV_O_RDWR | BDRV_O_CACHE_WB); if (ret < 0) { return ret; } diff --git a/block/raw-posix.c b/block/raw-posix.c index 8a3cdbc..99ac869 100644 --- a/block/raw-posix.c +++ b/block/raw-posix.c @@ -303,7 +303,8 @@ static int raw_open_common(BlockDriverState *bs, const char *filename, return 0; } -static int raw_open(BlockDriverState *bs, const char *filename, int flags) +static int raw_open(BlockDriverState *bs, const char *filename, + QDict *options, int flags) { BDRVRawState *s = bs->opaque; @@ -1292,7 +1293,8 @@ static int check_hdev_writable(BDRVRawState *s) return 0; } -static int hdev_open(BlockDriverState *bs, const char *filename, int flags) +static int hdev_open(BlockDriverState *bs, const char *filename, + QDict *options, int flags) { BDRVRawState *s = bs->opaque; int ret; @@ -1530,7 +1532,8 @@ static BlockDriver bdrv_host_device = { }; #ifdef __linux__ -static int floppy_open(BlockDriverState *bs, const char *filename, int flags) +static int floppy_open(BlockDriverState *bs, const char *filename, + QDict *options, int flags) { BDRVRawState *s = bs->opaque; int ret; @@ -1652,7 +1655,8 @@ static BlockDriver bdrv_host_floppy = { .bdrv_eject = floppy_eject, }; -static int cdrom_open(BlockDriverState *bs, const char *filename, int flags) +static int cdrom_open(BlockDriverState *bs, const char *filename, + QDict *options, int flags) { BDRVRawState *s = bs->opaque; @@ -1760,7 +1764,8 @@ static BlockDriver bdrv_host_cdrom = { #endif /* __linux__ */ #if defined (__FreeBSD__) || defined(__FreeBSD_kernel__) -static int cdrom_open(BlockDriverState *bs, const char *filename, int flags) +static int cdrom_open(BlockDriverState *bs, const char *filename, + QDict *options, int flags) { BDRVRawState *s = bs->opaque; int ret; diff --git a/block/sheepdog.c b/block/sheepdog.c index 54d3e53..bb67c4c 100644 --- a/block/sheepdog.c +++ b/block/sheepdog.c @@ -1126,7 +1126,8 @@ static int write_object(int fd, char *buf, uint64_t oid, int copies, create, cache_flags); } -static int sd_open(BlockDriverState *bs, const char *filename, int flags) +static int sd_open(BlockDriverState *bs, const char *filename, + QDict *options, int flags) { int ret, fd; uint32_t vid = 0; @@ -1269,7 +1270,7 @@ static int sd_prealloc(const char *filename) void *buf = g_malloc0(SD_DATA_OBJ_SIZE); int ret; - ret = bdrv_file_open(&bs, filename, BDRV_O_RDWR); + ret = bdrv_file_open(&bs, filename, NULL, BDRV_O_RDWR); if (ret < 0) { goto out; } @@ -1367,7 +1368,7 @@ static int sd_create(const char *filename, QEMUOptionParameter *options) goto out; } - ret = bdrv_file_open(&bs, backing_file, 0); + ret = bdrv_file_open(&bs, backing_file, NULL, 0); if (ret < 0) { goto out; } diff --git a/block/vmdk.c b/block/vmdk.c index e92104a..7bad757 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -661,7 +661,7 @@ static int vmdk_parse_extents(const char *desc, BlockDriverState *bs, path_combine(extent_path, sizeof(extent_path), desc_file_path, fname); - ret = bdrv_file_open(&extent_file, extent_path, bs->open_flags); + ret = bdrv_file_open(&extent_file, extent_path, NULL, bs->open_flags); if (ret) { return ret; } diff --git a/block/vvfat.c b/block/vvfat.c index b8eb38a..ef74c30 100644 --- a/block/vvfat.c +++ b/block/vvfat.c @@ -988,7 +988,8 @@ static void vvfat_rebind(BlockDriverState *bs) s->bs = bs; } -static int vvfat_open(BlockDriverState *bs, const char* dirname, int flags) +static int vvfat_open(BlockDriverState *bs, const char* dirname, + QDict *options, int flags) { BDRVVVFATState *s = bs->opaque; int i, cyls, heads, secs; @@ -658,7 +658,11 @@ DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type) abort(); } if (!file || !*file) { - return dinfo; + if (qdict_size(bs_opts)) { + file = NULL; + } else { + return dinfo; + } } if (snapshot) { /* always use cache=unsafe with snapshot */ @@ -697,10 +701,10 @@ DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type) if (ret < 0) { if (ret == -EMEDIUMTYPE) { error_report("could not open disk image %s: not in %s format", - file, drv->format_name); + file ?: dinfo->id, drv->format_name); } else { error_report("could not open disk image %s: %s", - file, strerror(-ret)); + file ?: dinfo->id, strerror(-ret)); } goto err; } @@ -1127,6 +1131,9 @@ void qmp_block_resize(const char *device, int64_t size, Error **errp) return; } + /* complete all in-flight operations before resizing the device */ + bdrv_drain_all(); + switch (bdrv_truncate(bs, size)) { case 0: break; diff --git a/include/block/block.h b/include/block/block.h index d4f34d6..9dc6aad 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -135,7 +135,8 @@ void bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top); void bdrv_delete(BlockDriverState *bs); int bdrv_parse_cache_flags(const char *mode, int *flags); int bdrv_parse_discard_flags(const char *mode, int *flags); -int bdrv_file_open(BlockDriverState **pbs, const char *filename, int flags); +int bdrv_file_open(BlockDriverState **pbs, const char *filename, + QDict *options, int flags); int bdrv_open_backing_file(BlockDriverState *bs); int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options, int flags, BlockDriver *drv); diff --git a/include/block/block_int.h b/include/block/block_int.h index ce0aa26..0986a2d 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -76,6 +76,10 @@ struct BlockDriver { int (*bdrv_probe)(const uint8_t *buf, int buf_size, const char *filename); int (*bdrv_probe_device)(const char *filename); + /* Any driver implementing this callback is expected to be able to handle + * NULL file names in its .bdrv_open() implementation */ + void (*bdrv_parse_filename)(const char *filename, QDict *options, Error **errp); + /* For handling image reopen for split or non-split files */ int (*bdrv_reopen_prepare)(BDRVReopenState *reopen_state, BlockReopenQueue *queue, Error **errp); @@ -83,7 +87,8 @@ struct BlockDriver { void (*bdrv_reopen_abort)(BDRVReopenState *reopen_state); int (*bdrv_open)(BlockDriverState *bs, QDict *options, int flags); - int (*bdrv_file_open)(BlockDriverState *bs, const char *filename, int flags); + int (*bdrv_file_open)(BlockDriverState *bs, const char *filename, + QDict *options, int flags); int (*bdrv_read)(BlockDriverState *bs, int64_t sector_num, uint8_t *buf, int nb_sectors); int (*bdrv_write)(BlockDriverState *bs, int64_t sector_num, diff --git a/include/block/nbd.h b/include/block/nbd.h index 344f05b..0903d7a 100644 --- a/include/block/nbd.h +++ b/include/block/nbd.h @@ -22,6 +22,7 @@ #include <sys/types.h> #include "qemu-common.h" +#include "qemu/option.h" struct nbd_request { uint32_t magic; @@ -60,10 +61,9 @@ enum { #define NBD_BUFFER_SIZE (1024*1024) ssize_t nbd_wr_sync(int fd, void *buffer, size_t size, bool do_read); -int tcp_socket_outgoing(const char *address, uint16_t port); int tcp_socket_incoming(const char *address, uint16_t port); -int tcp_socket_outgoing_spec(const char *address_and_port); int tcp_socket_incoming_spec(const char *address_and_port); +int tcp_socket_outgoing_opts(QemuOpts *opts); int unix_socket_outgoing(const char *path); int unix_socket_incoming(const char *path); diff --git a/include/qemu/sockets.h b/include/qemu/sockets.h index ae5c21c..d225f6d 100644 --- a/include/qemu/sockets.h +++ b/include/qemu/sockets.h @@ -30,6 +30,8 @@ int inet_aton(const char *cp, struct in_addr *ia); #include "qapi/error.h" #include "qapi/qmp/qerror.h" +extern QemuOptsList socket_optslist; + /* misc helpers */ int qemu_socket(int domain, int type, int protocol); int qemu_accept(int s, struct sockaddr *addr, socklen_t *addrlen); @@ -45,6 +47,7 @@ int recv_all(int fd, void *buf, int len1, bool single_read); */ typedef void NonBlockingConnectHandler(int fd, void *opaque); +InetSocketAddress *inet_parse(const char *str, Error **errp); int inet_listen_opts(QemuOpts *opts, int port_offset, Error **errp); int inet_listen(const char *str, char *ostr, int olen, int socktype, int port_offset, Error **errp); @@ -199,22 +199,15 @@ static void combine_addr(char *buf, size_t len, const char* address, } } -int tcp_socket_outgoing(const char *address, uint16_t port) -{ - char address_and_port[128]; - combine_addr(address_and_port, 128, address, port); - return tcp_socket_outgoing_spec(address_and_port); -} - -int tcp_socket_outgoing_spec(const char *address_and_port) +int tcp_socket_outgoing_opts(QemuOpts *opts) { Error *local_err = NULL; - int fd = inet_connect(address_and_port, &local_err); - + int fd = inet_connect_opts(opts, &local_err, NULL, NULL); if (local_err != NULL) { qerror_report_err(local_err); error_free(local_err); } + return fd; } @@ -1766,7 +1766,7 @@ static int openfile(char *name, int flags, int growable) } if (growable) { - if (bdrv_file_open(&bs, name, flags)) { + if (bdrv_file_open(&bs, name, NULL, flags)) { fprintf(stderr, "%s: can't open device %s\n", progname, name); return 1; } diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c index d70bbf0..b6b78f5 100644 --- a/util/qemu-sockets.c +++ b/util/qemu-sockets.c @@ -33,10 +33,10 @@ static const int on=1, off=0; -/* used temporarely until all users are converted to QemuOpts */ -static QemuOptsList dummy_opts = { - .name = "dummy", - .head = QTAILQ_HEAD_INITIALIZER(dummy_opts.head), +/* used temporarily until all users are converted to QemuOpts */ +QemuOptsList socket_optslist = { + .name = "socket", + .head = QTAILQ_HEAD_INITIALIZER(socket_optslist.head), .desc = { { .name = "path", @@ -485,7 +485,7 @@ err: } /* compatibility wrapper */ -static InetSocketAddress *inet_parse(const char *str, Error **errp) +InetSocketAddress *inet_parse(const char *str, Error **errp) { InetSocketAddress *addr; const char *optstr, *h; @@ -555,7 +555,7 @@ fail: return NULL; } -static void inet_addr_to_opts(QemuOpts *opts, InetSocketAddress *addr) +static void inet_addr_to_opts(QemuOpts *opts, const InetSocketAddress *addr) { bool ipv4 = addr->ipv4 || !addr->has_ipv4; bool ipv6 = addr->ipv6 || !addr->has_ipv6; @@ -583,7 +583,7 @@ int inet_listen(const char *str, char *ostr, int olen, addr = inet_parse(str, errp); if (addr != NULL) { - opts = qemu_opts_create_nofail(&dummy_opts); + opts = qemu_opts_create_nofail(&socket_optslist); inet_addr_to_opts(opts, addr); qapi_free_InetSocketAddress(addr); sock = inet_listen_opts(opts, port_offset, errp); @@ -622,7 +622,7 @@ int inet_connect(const char *str, Error **errp) addr = inet_parse(str, errp); if (addr != NULL) { - opts = qemu_opts_create_nofail(&dummy_opts); + opts = qemu_opts_create_nofail(&socket_optslist); inet_addr_to_opts(opts, addr); qapi_free_InetSocketAddress(addr); sock = inet_connect_opts(opts, errp, NULL, NULL); @@ -656,7 +656,7 @@ int inet_nonblocking_connect(const char *str, addr = inet_parse(str, errp); if (addr != NULL) { - opts = qemu_opts_create_nofail(&dummy_opts); + opts = qemu_opts_create_nofail(&socket_optslist); inet_addr_to_opts(opts, addr); qapi_free_InetSocketAddress(addr); sock = inet_connect_opts(opts, errp, callback, opaque); @@ -799,7 +799,7 @@ int unix_listen(const char *str, char *ostr, int olen, Error **errp) char *path, *optstr; int sock, len; - opts = qemu_opts_create_nofail(&dummy_opts); + opts = qemu_opts_create_nofail(&socket_optslist); optstr = strchr(str, ','); if (optstr) { @@ -827,7 +827,7 @@ int unix_connect(const char *path, Error **errp) QemuOpts *opts; int sock; - opts = qemu_opts_create_nofail(&dummy_opts); + opts = qemu_opts_create_nofail(&socket_optslist); qemu_opt_set(opts, "path", path); sock = unix_connect_opts(opts, errp, NULL, NULL); qemu_opts_del(opts); @@ -844,7 +844,7 @@ int unix_nonblocking_connect(const char *path, g_assert(callback != NULL); - opts = qemu_opts_create_nofail(&dummy_opts); + opts = qemu_opts_create_nofail(&socket_optslist); qemu_opt_set(opts, "path", path); sock = unix_connect_opts(opts, errp, callback, opaque); qemu_opts_del(opts); @@ -895,7 +895,7 @@ int socket_connect(SocketAddress *addr, Error **errp, QemuOpts *opts; int fd; - opts = qemu_opts_create_nofail(&dummy_opts); + opts = qemu_opts_create_nofail(&socket_optslist); switch (addr->kind) { case SOCKET_ADDRESS_KIND_INET: inet_addr_to_opts(opts, addr->inet); @@ -926,7 +926,7 @@ int socket_listen(SocketAddress *addr, Error **errp) QemuOpts *opts; int fd; - opts = qemu_opts_create_nofail(&dummy_opts); + opts = qemu_opts_create_nofail(&socket_optslist); switch (addr->kind) { case SOCKET_ADDRESS_KIND_INET: inet_addr_to_opts(opts, addr->inet); @@ -954,7 +954,7 @@ int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) QemuOpts *opts; int fd; - opts = qemu_opts_create_nofail(&dummy_opts); + opts = qemu_opts_create_nofail(&socket_optslist); switch (remote->kind) { case SOCKET_ADDRESS_KIND_INET: qemu_opt_set(opts, "host", remote->inet->host); |