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Fri, 21 Aug 2020 17:21:21 +0000 (UTC) From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= To: qemu-devel@nongnu.org Subject: [PATCH v4 6/6] block/fileb: switch to use qemu_open/qemu_create for improved errors Date: Fri, 21 Aug 2020 18:21:05 +0100 Message-Id: <20200821172105.608752-7-berrange@redhat.com> In-Reply-To: <20200821172105.608752-1-berrange@redhat.com> References: <20200821172105.608752-1-berrange@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=berrange@redhat.com X-Mimecast-Spam-Score: 0.002 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=205.139.110.120; envelope-from=berrange@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/20 23:41:39 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -40 X-Spam_score: -4.1 X-Spam_bar: ---- X-Spam_report: (-4.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , qemu-block@nongnu.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Markus Armbruster , Max Reitz Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Currently at startup if using cache=none on a filesystem lacking O_DIRECT such as tmpfs, at startup QEMU prints qemu-system-x86_64: -drive file=/tmp/foo.img,cache=none: file system may not support O_DIRECT qemu-system-x86_64: -drive file=/tmp/foo.img,cache=none: Could not open '/tmp/foo.img': Invalid argument while at QMP level the hint is missing, so QEMU reports just "error": { "class": "GenericError", "desc": "Could not open '/tmp/foo.img': Invalid argument" } which is close to useless for the end user trying to figure out what they did wrong. With this change at startup QEMU prints qemu-system-x86_64: -drive file=/tmp/foo.img,cache=none: Unable to open '/tmp/foo.img' flags 0x4000: filesystem does not support O_DIRECT while at the QMP level QEMU reports a massively more informative "error": { "class": "GenericError", "desc": "Unable to open '/tmp/foo.img' flags 0x4002: filesystem does not support O_DIRECT" } Reviewed-by: Eric Blake Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Daniel P. Berrangé --- block/file-posix.c | 18 +++++++----------- block/file-win32.c | 6 ++---- tests/qemu-iotests/051.out | 4 ++-- tests/qemu-iotests/051.pc.out | 4 ++-- tests/qemu-iotests/061.out | 2 +- tests/qemu-iotests/069.out | 2 +- tests/qemu-iotests/082.out | 4 ++-- tests/qemu-iotests/111.out | 2 +- tests/qemu-iotests/226.out | 6 +++--- tests/qemu-iotests/232.out | 12 ++++++------ tests/qemu-iotests/244.out | 6 +++--- 11 files changed, 30 insertions(+), 36 deletions(-) diff --git a/block/file-posix.c b/block/file-posix.c index bac2566f10..c63926d592 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -630,11 +630,10 @@ static int raw_open_common(BlockDriverState *bs, QDict *options, raw_parse_flags(bdrv_flags, &s->open_flags, false); s->fd = -1; - fd = qemu_open_old(filename, s->open_flags, 0644); + fd = qemu_open(filename, s->open_flags, errp); ret = fd < 0 ? -errno : 0; if (ret < 0) { - error_setg_file_open(errp, -ret, filename); if (ret == -EROFS) { ret = -EACCES; } @@ -1032,15 +1031,13 @@ static int raw_reconfigure_getfd(BlockDriverState *bs, int flags, } } - /* If we cannot use fcntl, or fcntl failed, fall back to qemu_open_old() */ + /* If we cannot use fcntl, or fcntl failed, fall back to qemu_open() */ if (fd == -1) { const char *normalized_filename = bs->filename; ret = raw_normalize_devicepath(&normalized_filename, errp); if (ret >= 0) { - assert(!(*open_flags & O_CREAT)); - fd = qemu_open_old(normalized_filename, *open_flags); + fd = qemu_open(normalized_filename, *open_flags, errp); if (fd == -1) { - error_setg_errno(errp, errno, "Could not reopen file"); return -1; } } @@ -2411,10 +2408,9 @@ raw_co_create(BlockdevCreateOptions *options, Error **errp) } /* Create file */ - fd = qemu_open_old(file_opts->filename, O_RDWR | O_CREAT | O_BINARY, 0644); + fd = qemu_create(file_opts->filename, O_RDWR | O_BINARY, 0644, errp); if (fd < 0) { result = -errno; - error_setg_errno(errp, -result, "Could not create file"); goto out; } @@ -3335,7 +3331,7 @@ static bool setup_cdrom(char *bsd_path, Error **errp) for (index = 0; index < num_of_test_partitions; index++) { snprintf(test_partition, sizeof(test_partition), "%ss%d", bsd_path, index); - fd = qemu_open_old(test_partition, O_RDONLY | O_BINARY | O_LARGEFILE); + fd = qemu_open(test_partition, O_RDONLY | O_BINARY | O_LARGEFILE, NULL); if (fd >= 0) { partition_found = true; qemu_close(fd); @@ -3653,7 +3649,7 @@ static int cdrom_probe_device(const char *filename) int prio = 0; struct stat st; - fd = qemu_open_old(filename, O_RDONLY | O_NONBLOCK); + fd = qemu_open(filename, O_RDONLY | O_NONBLOCK, NULL); if (fd < 0) { goto out; } @@ -3787,7 +3783,7 @@ static int cdrom_reopen(BlockDriverState *bs) */ if (s->fd >= 0) qemu_close(s->fd); - fd = qemu_open_old(bs->filename, s->open_flags, 0644); + fd = qemu_open(bs->filename, s->open_flags, NULL); if (fd < 0) { s->fd = -1; return -EIO; diff --git a/block/file-win32.c b/block/file-win32.c index 8c1845830e..1a31f8a5ba 100644 --- a/block/file-win32.c +++ b/block/file-win32.c @@ -576,11 +576,9 @@ static int raw_co_create(BlockdevCreateOptions *options, Error **errp) return -EINVAL; } - fd = qemu_open_old(file_opts->filename, - O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, - 0644); + fd = qemu_create(file_opts->filename, O_WRONLY | O_TRUNC | O_BINARY, + 0644, errp); if (fd < 0) { - error_setg_errno(errp, errno, "Could not create file"); return -EIO; } set_sparse(fd); diff --git a/tests/qemu-iotests/051.out b/tests/qemu-iotests/051.out index de4771bcb3..242dcfe08d 100644 --- a/tests/qemu-iotests/051.out +++ b/tests/qemu-iotests/051.out @@ -363,7 +363,7 @@ Testing: -drive file=foo:bar QEMU_PROG: -drive file=foo:bar: Unknown protocol 'foo' Testing: -drive file.filename=foo:bar -QEMU_PROG: -drive file.filename=foo:bar: Could not open 'foo:bar': No such file or directory +QEMU_PROG: -drive file.filename=foo:bar: Could not open 'foo:bar' flags 0x08000: No such file or directory Testing: -hda file:TEST_DIR/t.qcow2 QEMU X.Y.Z monitor - type 'help' for more information @@ -374,7 +374,7 @@ QEMU X.Y.Z monitor - type 'help' for more information (qemu) quit Testing: -drive file.filename=file:TEST_DIR/t.qcow2 -QEMU_PROG: -drive file.filename=file:TEST_DIR/t.qcow2: Could not open 'file:TEST_DIR/t.qcow2': No such file or directory +QEMU_PROG: -drive file.filename=file:TEST_DIR/t.qcow2: Could not open 'file:TEST_DIR/t.qcow2' flags 0x80000: No such file or directory === Snapshot mode === diff --git a/tests/qemu-iotests/051.pc.out b/tests/qemu-iotests/051.pc.out index f707471fb0..4c41b46986 100644 --- a/tests/qemu-iotests/051.pc.out +++ b/tests/qemu-iotests/051.pc.out @@ -463,7 +463,7 @@ Testing: -drive file=foo:bar QEMU_PROG: -drive file=foo:bar: Unknown protocol 'foo' Testing: -drive file.filename=foo:bar -QEMU_PROG: -drive file.filename=foo:bar: Could not open 'foo:bar': No such file or directory +QEMU_PROG: -drive file.filename=foo:bar: Could not open 'foo:bar' flags 0x80000: No such file or directory Testing: -hda file:TEST_DIR/t.qcow2 QEMU X.Y.Z monitor - type 'help' for more information @@ -474,7 +474,7 @@ QEMU X.Y.Z monitor - type 'help' for more information (qemu) quit Testing: -drive file.filename=file:TEST_DIR/t.qcow2 -QEMU_PROG: -drive file.filename=file:TEST_DIR/t.qcow2: Could not open 'file:TEST_DIR/t.qcow2': No such file or directory +QEMU_PROG: -drive file.filename=file:TEST_DIR/t.qcow2: Could not open 'file:TEST_DIR/t.qcow2' flags 0x80000: No such file or directory === Snapshot mode === diff --git a/tests/qemu-iotests/061.out b/tests/qemu-iotests/061.out index b2d2dfed04..a533b0d416 100644 --- a/tests/qemu-iotests/061.out +++ b/tests/qemu-iotests/061.out @@ -538,7 +538,7 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 qemu-img: data-file can only be set for images that use an external data file Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 data_file=TEST_DIR/t.IMGFMT.data -qemu-img: Could not open 'TEST_DIR/t.IMGFMT': Could not open 'foo': No such file or directory +qemu-img: Could not open 'TEST_DIR/t.IMGFMT': Could not open 'foo' flags 0x80000: No such file or directory image: TEST_DIR/t.IMGFMT file format: IMGFMT virtual size: 64 MiB (67108864 bytes) diff --git a/tests/qemu-iotests/069.out b/tests/qemu-iotests/069.out index 126b4d2d51..ffb95c965f 100644 --- a/tests/qemu-iotests/069.out +++ b/tests/qemu-iotests/069.out @@ -4,5 +4,5 @@ QA output created by 069 Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=131072 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=131072 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT -qemu-io: can't open device TEST_DIR/t.IMGFMT: Could not open backing file: Could not open 'TEST_DIR/t.IMGFMT.base': No such file or directory +qemu-io: can't open device TEST_DIR/t.IMGFMT: Could not open backing file: Could not open 'TEST_DIR/t.IMGFMT.base' flags 0x80000: No such file or directory *** done diff --git a/tests/qemu-iotests/082.out b/tests/qemu-iotests/082.out index 1728aff1e0..5a718ac1b5 100644 --- a/tests/qemu-iotests/082.out +++ b/tests/qemu-iotests/082.out @@ -544,10 +544,10 @@ Supported options: size= - Virtual disk size Testing: convert -O qcow2 -o backing_fmt=qcow2,backing_file=TEST_DIR/t.qcow2,,help TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base -qemu-img: Could not open 'TEST_DIR/t.qcow2.base': Could not open backing file: Could not open 'TEST_DIR/t.qcow2,help': No such file or directory +qemu-img: Could not open 'TEST_DIR/t.qcow2.base': Could not open backing file: Could not open 'TEST_DIR/t.qcow2,help' flags 0x80000: No such file or directory Testing: convert -O qcow2 -o backing_fmt=qcow2,backing_file=TEST_DIR/t.qcow2,,? TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base -qemu-img: Could not open 'TEST_DIR/t.qcow2.base': Could not open backing file: Could not open 'TEST_DIR/t.qcow2,?': No such file or directory +qemu-img: Could not open 'TEST_DIR/t.qcow2.base': Could not open backing file: Could not open 'TEST_DIR/t.qcow2,?' flags 0x80000: No such file or directory Testing: convert -O qcow2 -o backing_file=TEST_DIR/t.qcow2, -o help TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base qemu-img: Invalid option list: backing_file=TEST_DIR/t.qcow2, diff --git a/tests/qemu-iotests/111.out b/tests/qemu-iotests/111.out index ba034e5c58..90255ea653 100644 --- a/tests/qemu-iotests/111.out +++ b/tests/qemu-iotests/111.out @@ -1,4 +1,4 @@ QA output created by 111 -qemu-img: TEST_DIR/t.IMGFMT: Could not open 'TEST_DIR/t.IMGFMT.inexistent': No such file or directory +qemu-img: TEST_DIR/t.IMGFMT: Could not open 'TEST_DIR/t.IMGFMT.inexistent' flags 0x80000: No such file or directory Could not open backing image. *** done diff --git a/tests/qemu-iotests/226.out b/tests/qemu-iotests/226.out index 42be973ff2..353fc4c799 100644 --- a/tests/qemu-iotests/226.out +++ b/tests/qemu-iotests/226.out @@ -6,7 +6,7 @@ QA output created by 226 qemu-io: can't open: A regular file was expected by the 'file' driver, but something else was given qemu-io: warning: Opening a character device as a file using the 'file' driver is deprecated == Testing RW == -qemu-io: can't open: Could not open 'TEST_DIR/t.IMGFMT': Is a directory +qemu-io: can't open: Could not open 'TEST_DIR/t.IMGFMT' flags 0x80002: Is a directory qemu-io: warning: Opening a character device as a file using the 'file' driver is deprecated === Testing with driver:host_device === @@ -14,13 +14,13 @@ qemu-io: warning: Opening a character device as a file using the 'file' driver i == Testing RO == qemu-io: can't open: 'host_device' driver expects either a character or block device == Testing RW == -qemu-io: can't open: Could not open 'TEST_DIR/t.IMGFMT': Is a directory +qemu-io: can't open: Could not open 'TEST_DIR/t.IMGFMT' flags 0x80002: Is a directory === Testing with driver:host_cdrom === == Testing RO == qemu-io: can't open: 'host_cdrom' driver expects either a character or block device == Testing RW == -qemu-io: can't open: Could not open 'TEST_DIR/t.IMGFMT': Is a directory +qemu-io: can't open: Could not open 'TEST_DIR/t.IMGFMT' flags 0x80802: Is a directory *** done diff --git a/tests/qemu-iotests/232.out b/tests/qemu-iotests/232.out index 3bd1a920af..bfa3f20172 100644 --- a/tests/qemu-iotests/232.out +++ b/tests/qemu-iotests/232.out @@ -21,11 +21,11 @@ NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only) NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only) NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only) -QEMU_PROG: -drive driver=file,file=TEST_DIR/t.IMGFMT,if=none,read-only=off,auto-read-only=off: Could not open 'TEST_DIR/t.IMGFMT': Permission denied +QEMU_PROG: -drive driver=file,file=TEST_DIR/t.IMGFMT,if=none,read-only=off,auto-read-only=off: Could not open 'TEST_DIR/t.IMGFMT' flags 0x80002: Permission denied NODE_NAME: TEST_DIR/t.IMGFMT (file) NODE_NAME: TEST_DIR/t.IMGFMT (file) -QEMU_PROG: -drive driver=file,file=TEST_DIR/t.IMGFMT,if=none,auto-read-only=off: Could not open 'TEST_DIR/t.IMGFMT': Permission denied +QEMU_PROG: -drive driver=file,file=TEST_DIR/t.IMGFMT,if=none,auto-read-only=off: Could not open 'TEST_DIR/t.IMGFMT' flags 0x80002: Permission denied NODE_NAME: TEST_DIR/t.IMGFMT (file) NODE_NAME: TEST_DIR/t.IMGFMT (file) @@ -49,11 +49,11 @@ node0: TEST_DIR/t.IMGFMT (file, read-only) node0: TEST_DIR/t.IMGFMT (file, read-only) node0: TEST_DIR/t.IMGFMT (file, read-only) -QEMU_PROG: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=node0,read-only=off,auto-read-only=off: Could not open 'TEST_DIR/t.IMGFMT': Permission denied +QEMU_PROG: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=node0,read-only=off,auto-read-only=off: Could not open 'TEST_DIR/t.IMGFMT' flags 0x80002: Permission denied node0: TEST_DIR/t.IMGFMT (file) -QEMU_PROG: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=node0,read-only=off: Could not open 'TEST_DIR/t.IMGFMT': Permission denied +QEMU_PROG: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=node0,read-only=off: Could not open 'TEST_DIR/t.IMGFMT' flags 0x80002: Permission denied -QEMU_PROG: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=node0,auto-read-only=off: Could not open 'TEST_DIR/t.IMGFMT': Permission denied +QEMU_PROG: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=node0,auto-read-only=off: Could not open 'TEST_DIR/t.IMGFMT' flags 0x80002: Permission denied node0: TEST_DIR/t.IMGFMT (file) -QEMU_PROG: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=node0: Could not open 'TEST_DIR/t.IMGFMT': Permission denied +QEMU_PROG: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=node0: Could not open 'TEST_DIR/t.IMGFMT' flags 0x80002: Permission denied *** done diff --git a/tests/qemu-iotests/244.out b/tests/qemu-iotests/244.out index dbab7359a9..34daec97f2 100644 --- a/tests/qemu-iotests/244.out +++ b/tests/qemu-iotests/244.out @@ -9,7 +9,7 @@ read 65536/65536 bytes at offset 0 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 65536/65536 bytes at offset 0 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -qemu-io: can't open device TEST_DIR/t.qcow2: Could not open 'inexistent': No such file or directory +qemu-io: can't open device TEST_DIR/t.qcow2: Could not open 'inexistent' flags 0x80002: No such file or directory no file open, try 'help open' Data file required, but without data file name in the image: @@ -17,14 +17,14 @@ qemu-io: can't open device TEST_DIR/t.qcow2: 'data-file' is required for this im no file open, try 'help open' read 65536/65536 bytes at offset 0 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -qemu-io: can't open device TEST_DIR/t.qcow2: Could not open 'inexistent': No such file or directory +qemu-io: can't open device TEST_DIR/t.qcow2: Could not open 'inexistent' flags 0x80002: No such file or directory no file open, try 'help open' Setting data-file for an image with internal data: Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 qemu-io: can't open device TEST_DIR/t.qcow2: 'data-file' can only be set for images with an external data file no file open, try 'help open' -qemu-io: can't open device TEST_DIR/t.qcow2: Could not open 'inexistent': No such file or directory +qemu-io: can't open device TEST_DIR/t.qcow2: Could not open 'inexistent' flags 0x80002: No such file or directory no file open, try 'help open' === Conflicting features === -- 2.26.2