From b8c1f90118ee81090ff9093790f88bf335132814 Mon Sep 17 00:00:00 2001 From: Max Reitz Date: Mon, 25 Feb 2019 20:08:27 +0100 Subject: [PATCH] block/ssh: Implement .bdrv_refresh_filename() This requires some changes to keep iotests 104 and 207 working. qemu-img info in 104 will now return a filename including the user name and the port, which need to be filtered by adjusting REMOTE_TEST_DIR in common.rc. This additional information has to be marked optional, however (which is simple as REMOTE_TEST_DIR is a regex), because otherwise 197 and 215 would fail: They use it (indirectly) to filter qemu-img create output which contains a backing filename they have passed to it -- which probably does not contain a user name or port number. The problem in 207 is a nice one to have: qemu-img info used to return json:{} filenames, but with this patch it returns nice plain ones. We now need to adjust the filtering to hide the user name (and port number while we are at it). The simplest way to do this is to include both in iotests.remote_filename() so that bdrv_refresh_filename() will not change it, and then iotests.img_info_log() will filter it correctly automatically. Signed-off-by: Max Reitz Tested-by: Richard W.M. Jones Message-id: 20190225190828.17726-2-mreitz@redhat.com Signed-off-by: Max Reitz --- block/ssh.c | 52 ++++++++++++++++++++++++++++++++++++++----- tests/qemu-iotests/207 | 10 ++++----- tests/qemu-iotests/207.out | 10 ++++----- tests/qemu-iotests/common.rc | 2 +- tests/qemu-iotests/iotests.py | 2 +- 5 files changed, 59 insertions(+), 17 deletions(-) diff --git a/block/ssh.c b/block/ssh.c index 859249113d..2eaeab84d5 100644 --- a/block/ssh.c +++ b/block/ssh.c @@ -75,6 +75,14 @@ typedef struct BDRVSSHState { /* Used to warn if 'flush' is not supported. */ bool unsafe_flush_warning; + + /* + * Store the user name for ssh_refresh_filename() because the + * default depends on the system you are on -- therefore, when we + * generate a filename, it should always contain the user name we + * are actually using. + */ + char *user; } BDRVSSHState; static void ssh_state_init(BDRVSSHState *s) @@ -87,6 +95,8 @@ static void ssh_state_init(BDRVSSHState *s) static void ssh_state_free(BDRVSSHState *s) { + g_free(s->user); + if (s->sftp_handle) { libssh2_sftp_close(s->sftp_handle); } @@ -628,14 +638,13 @@ static int connect_to_ssh(BDRVSSHState *s, BlockdevOptionsSsh *opts, int ssh_flags, int creat_mode, Error **errp) { int r, ret; - const char *user; long port = 0; if (opts->has_user) { - user = opts->user; + s->user = g_strdup(opts->user); } else { - user = g_get_user_name(); - if (!user) { + s->user = g_strdup(g_get_user_name()); + if (!s->user) { error_setg_errno(errp, errno, "Can't get user name"); ret = -errno; goto err; @@ -685,7 +694,7 @@ static int connect_to_ssh(BDRVSSHState *s, BlockdevOptionsSsh *opts, } /* Authenticate. */ - ret = authenticate(s, user, errp); + ret = authenticate(s, s->user, errp); if (ret < 0) { goto err; } @@ -1242,6 +1251,38 @@ static int coroutine_fn ssh_co_truncate(BlockDriverState *bs, int64_t offset, return ssh_grow_file(s, offset, errp); } +static void ssh_refresh_filename(BlockDriverState *bs) +{ + BDRVSSHState *s = bs->opaque; + const char *path, *host_key_check; + int ret; + + /* + * None of these options can be represented in a plain "host:port" + * format, so if any was given, we have to abort. + */ + if (s->inet->has_ipv4 || s->inet->has_ipv6 || s->inet->has_to || + s->inet->has_numeric) + { + return; + } + + path = qdict_get_try_str(bs->full_open_options, "path"); + assert(path); /* mandatory option */ + + host_key_check = qdict_get_try_str(bs->full_open_options, "host_key_check"); + + ret = snprintf(bs->exact_filename, sizeof(bs->exact_filename), + "ssh://%s@%s:%s%s%s%s", + s->user, s->inet->host, s->inet->port, path, + host_key_check ? "?host_key_check=" : "", + host_key_check ?: ""); + if (ret >= sizeof(bs->exact_filename)) { + /* An overflow makes the filename unusable, so do not report any */ + bs->exact_filename[0] = '\0'; + } +} + static const char *const ssh_strong_runtime_opts[] = { "host", "port", @@ -1268,6 +1309,7 @@ static BlockDriver bdrv_ssh = { .bdrv_getlength = ssh_getlength, .bdrv_co_truncate = ssh_co_truncate, .bdrv_co_flush_to_disk = ssh_co_flush, + .bdrv_refresh_filename = ssh_refresh_filename, .create_opts = &ssh_create_opts, .strong_runtime_opts = ssh_strong_runtime_opts, }; diff --git a/tests/qemu-iotests/207 b/tests/qemu-iotests/207 index dfd3c51bd1..b3816136f7 100755 --- a/tests/qemu-iotests/207 +++ b/tests/qemu-iotests/207 @@ -66,7 +66,7 @@ with iotests.FilePath('t.img') as disk_path, \ 'size': 4194304 }) vm.shutdown() - iotests.img_info_log(remote_path, filter_path=disk_path) + iotests.img_info_log(remote_path) iotests.log("") iotests.img_info_log(disk_path) @@ -91,7 +91,7 @@ with iotests.FilePath('t.img') as disk_path, \ 'size': 8388608 }) vm.shutdown() - iotests.img_info_log(remote_path, filter_path=disk_path) + iotests.img_info_log(remote_path) vm.launch() blockdev_create(vm, { 'driver': 'ssh', @@ -108,7 +108,7 @@ with iotests.FilePath('t.img') as disk_path, \ 'size': 4194304 }) vm.shutdown() - iotests.img_info_log(remote_path, filter_path=disk_path) + iotests.img_info_log(remote_path) md5_key = subprocess.check_output( 'ssh-keyscan -t rsa 127.0.0.1 2>/dev/null | grep -v "\\^#" | ' + @@ -146,7 +146,7 @@ with iotests.FilePath('t.img') as disk_path, \ 'size': 8388608 }) vm.shutdown() - iotests.img_info_log(remote_path, filter_path=disk_path) + iotests.img_info_log(remote_path) sha1_key = subprocess.check_output( 'ssh-keyscan -t rsa 127.0.0.1 2>/dev/null | grep -v "\\^#" | ' + @@ -184,7 +184,7 @@ with iotests.FilePath('t.img') as disk_path, \ 'size': 4194304 }) vm.shutdown() - iotests.img_info_log(remote_path, filter_path=disk_path) + iotests.img_info_log(remote_path) # # Invalid path and user diff --git a/tests/qemu-iotests/207.out b/tests/qemu-iotests/207.out index 979d5cf745..ec9823793a 100644 --- a/tests/qemu-iotests/207.out +++ b/tests/qemu-iotests/207.out @@ -5,7 +5,7 @@ {"execute": "job-dismiss", "arguments": {"id": "job0"}} {"return": {}} -image: json:{"driver": "IMGFMT", "file": {"server.host": "127.0.0.1", "server.port": "22", "driver": "ssh", "path": "TEST_IMG"}} +image: TEST_IMG file format: IMGFMT virtual size: 4 MiB (4194304 bytes) @@ -21,7 +21,7 @@ virtual size: 4 MiB (4194304 bytes) {"execute": "job-dismiss", "arguments": {"id": "job0"}} {"return": {}} -image: json:{"driver": "IMGFMT", "file": {"server.host": "127.0.0.1", "server.port": "22", "driver": "ssh", "path": "TEST_IMG"}} +image: TEST_IMG file format: IMGFMT virtual size: 8 MiB (8388608 bytes) @@ -30,7 +30,7 @@ virtual size: 8 MiB (8388608 bytes) {"execute": "job-dismiss", "arguments": {"id": "job0"}} {"return": {}} -image: json:{"driver": "IMGFMT", "file": {"server.host": "127.0.0.1", "server.port": "22", "driver": "ssh", "path": "TEST_IMG"}} +image: TEST_IMG file format: IMGFMT virtual size: 4 MiB (4194304 bytes) @@ -45,7 +45,7 @@ Job failed: remote host key does not match host_key_check 'wrong' {"execute": "job-dismiss", "arguments": {"id": "job0"}} {"return": {}} -image: json:{"driver": "IMGFMT", "file": {"server.host": "127.0.0.1", "server.port": "22", "driver": "ssh", "path": "TEST_IMG"}} +image: TEST_IMG file format: IMGFMT virtual size: 8 MiB (8388608 bytes) @@ -60,7 +60,7 @@ Job failed: remote host key does not match host_key_check 'wrong' {"execute": "job-dismiss", "arguments": {"id": "job0"}} {"return": {}} -image: json:{"driver": "IMGFMT", "file": {"server.host": "127.0.0.1", "server.port": "22", "driver": "ssh", "path": "TEST_IMG"}} +image: TEST_IMG file format: IMGFMT virtual size: 4 MiB (4194304 bytes) diff --git a/tests/qemu-iotests/common.rc b/tests/qemu-iotests/common.rc index a543e546c2..93f87389b6 100644 --- a/tests/qemu-iotests/common.rc +++ b/tests/qemu-iotests/common.rc @@ -158,7 +158,7 @@ else TEST_IMG="nbd:127.0.0.1:10810" elif [ "$IMGPROTO" = "ssh" ]; then TEST_IMG_FILE=$TEST_DIR/t.$IMGFMT - REMOTE_TEST_DIR="ssh://127.0.0.1$TEST_DIR" + REMOTE_TEST_DIR="ssh://\\($USER@\\)\\?127.0.0.1\\(:[0-9]\\+\\)\\?$TEST_DIR" TEST_IMG="ssh://127.0.0.1$TEST_IMG_FILE" elif [ "$IMGPROTO" = "nfs" ]; then TEST_IMG_FILE=$TEST_DIR/t.$IMGFMT diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py index 997dc910cb..f811f69135 100644 --- a/tests/qemu-iotests/iotests.py +++ b/tests/qemu-iotests/iotests.py @@ -411,7 +411,7 @@ def remote_filename(path): if imgproto == 'file': return path elif imgproto == 'ssh': - return "ssh://127.0.0.1%s" % (path) + return "ssh://%s@127.0.0.1:22%s" % (os.environ.get('USER'), path) else: raise Exception("Protocol %s not supported" % (imgproto)) -- 2.11.0