[Qemu-devel] [PULL v3 00/41] Block layer patches

[Qemu-devel] [PULL v3 00/41] Block layer patches

[Kevin Wolf]

The following changes since commit 3c07587d49458341510360557c849e93e9afaf59:

  Merge remote-tracking branch 'remotes/dgibson/tags/ppc-next-20151111' into staging (2015-11-11 09:34:18 +0000)

are available in the git repository at:


  git://repo.or.cz/qemu/kevin.git tags/for-upstream

for you to fetch changes up to 4d07c720f44beafd10907cecfd5b8a57622243c1:

  Merge remote-tracking branch 'mreitz/tags/pull-block-for-kevin-2015-11-11' into queue-block (2015-11-11 17:02:02 +0100)

----------------------------------------------------------------

Block layer patches

----------------------------------------------------------------
Alberto Garcia (18):
      block: Don't call blk_bs() twice in bdrv_lookup_bs()
      block: check for existing device IDs in external_snapshot_prepare()
      block: rename BlockdevSnapshot to BlockdevSnapshotSync
      block: support passing 'backing': '' to 'blockdev-add'
      block: add a 'blockdev-snapshot' QMP command
      block: add tests for the 'blockdev-snapshot' command
      commit: reopen overlay_bs before base
      qemu-iotests: Test the reopening of overlay_bs in 'block-commit'
      throttle: Check for pending requests in throttle_group_unregister_bs()
      throttle: Use bs->throttle_state instead of bs->io_limits_enabled
      block: Disallow snapshots if the overlay doesn't support backing files
      block: Remove inner quotation marks in iotest 085
      block: test 'blockdev-snapshot' using a file BDS as the overlay
      mirror: block all operations on the target image during the job
      block: Add blk_get_refcnt()
      block: Add 'x-blockdev-del' QMP command
      iotests: Add tests for the x-blockdev-del command
      iotests: Check for quorum support in test 139

Jeff Cody (2):
      qemu-iotests: fix cleanup of background processes
      qemu-iotests: fix -valgrind option for check

John Snow (5):
      qcow2: avoid misaligned 64bit bswap
      qemu-img: add check for zero-length job len
      qemu-io: fix cvtnum lval types
      qemu-io: Check for trailing chars
      qemu-io: Correct error messages

Kevin Wolf (2):
      qcow2: Fix qcow2_get_cluster_offset() for zero clusters
      Merge remote-tracking branch 'mreitz/tags/pull-block-for-kevin-2015-11-11' into queue-block

Max Reitz (15):
      block: Add blk_remove_bs()
      block: Make bdrv_states public
      block: Add functions for inheriting a BBRS
      blockdev: Add blockdev-open-tray
      blockdev: Add blockdev-close-tray
      blockdev: Add blockdev-remove-medium
      blockdev: Add blockdev-insert-medium
      blockdev: Implement eject with basic operations
      blockdev: Implement change with basic operations
      block: Inquire tray state before tray-moved events
      qmp: Introduce blockdev-change-medium
      hmp: Use blockdev-change-medium for change command
      blockdev: read-only-mode for blockdev-change-medium
      hmp: Add read-only-mode option to change command
      iotests: Add test for change-related QMP commands

 block.c                          |  22 +-
 block/block-backend.c            |  61 +++-
 block/commit.c                   |   8 +-
 block/mirror.c                   |   4 +
 block/qapi.c                     |   2 +-
 block/qcow2-cluster.c            |  15 +-
 block/qcow2-refcount.c           |  11 +-
 block/throttle-groups.c          |   7 +
 blockdev.c                       | 527 ++++++++++++++++++++--------
 hmp-commands.hx                  |  20 +-
 hmp.c                            |  47 ++-
 include/block/block_int.h        |   7 +-
 include/sysemu/block-backend.h   |   4 +
 include/sysemu/blockdev.h        |   2 -
 qapi-schema.json                 |  10 +-
 qapi/block-core.json             | 192 ++++++++++-
 qemu-img.c                       |   3 +-
 qemu-io-cmds.c                   | 187 +++++++---
 qmp-commands.hx                  | 317 ++++++++++++++++-
 qmp.c                            |   3 +-
 tests/qemu-iotests/039.out       |  30 +-
 tests/qemu-iotests/040           |  30 ++
 tests/qemu-iotests/040.out       |   4 +-
 tests/qemu-iotests/058           |  12 +-
 tests/qemu-iotests/061.out       |  12 +-
 tests/qemu-iotests/085           | 120 ++++++-
 tests/qemu-iotests/085.out       |  38 ++-
 tests/qemu-iotests/118           | 720 +++++++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/118.out       |   5 +
 tests/qemu-iotests/137.out       |   6 +-
 tests/qemu-iotests/139           | 416 ++++++++++++++++++++++
 tests/qemu-iotests/139.out       |   5 +
 tests/qemu-iotests/common        |   9 +-
 tests/qemu-iotests/common.config |  32 +-
 tests/qemu-iotests/common.qemu   |  18 +-
 tests/qemu-iotests/common.rc     |  18 +-
 tests/qemu-iotests/group         |   2 +
 ui/cocoa.m                       |  11 +-
 38 files changed, 2626 insertions(+), 311 deletions(-)
 create mode 100755 tests/qemu-iotests/118
 create mode 100644 tests/qemu-iotests/118.out
 create mode 100644 tests/qemu-iotests/139
 create mode 100644 tests/qemu-iotests/139.out

[Qemu-devel] [PULL v3 14/41] blockdev: read-only-mode for blockdev-change-medium

[Kevin Wolf]

From: Max Reitz <mreitz@redhat.com>

Add an option to qmp_blockdev_change_medium() which allows changing the
read-only status of the block device whose medium is changed.

Some drives do not have a inherently fixed read-only status; for
instance, floppy disks can be set read-only or writable independently of
the drive. Some users may find it useful to be able to therefore change
the read-only status of a block device when changing the medium.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 blockdev.c           | 22 ++++++++++++++++++++++
 hmp.c                |  2 +-
 qapi/block-core.json | 24 +++++++++++++++++++++++-
 qmp-commands.hx      | 24 +++++++++++++++++++++++-
 qmp.c                |  3 ++-
 ui/cocoa.m           |  1 +
 6 files changed, 72 insertions(+), 4 deletions(-)

diff --git a/blockdev.c b/blockdev.c
index b3a958c..34f6e5b 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -2145,6 +2145,8 @@ void qmp_blockdev_insert_medium(const char *device, const char *node_name,
 
 void qmp_blockdev_change_medium(const char *device, const char *filename,
                                 bool has_format, const char *format,
+                                bool has_read_only,
+                                BlockdevChangeReadOnlyMode read_only,
                                 Error **errp)
 {
     BlockBackend *blk;
@@ -2166,6 +2168,26 @@ void qmp_blockdev_change_medium(const char *device, const char *filename,
 
     bdrv_flags = blk_get_open_flags_from_root_state(blk);
 
+    if (!has_read_only) {
+        read_only = BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN;
+    }
+
+    switch (read_only) {
+    case BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN:
+        break;
+
+    case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_ONLY:
+        bdrv_flags &= ~BDRV_O_RDWR;
+        break;
+
+    case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_WRITE:
+        bdrv_flags |= BDRV_O_RDWR;
+        break;
+
+    default:
+        abort();
+    }
+
     if (has_format) {
         options = qdict_new();
         qdict_put(options, "driver", qstring_from_str(format));
diff --git a/hmp.c b/hmp.c
index e5ad944..16006aa 100644
--- a/hmp.c
+++ b/hmp.c
@@ -1355,7 +1355,7 @@ void hmp_change(Monitor *mon, const QDict *qdict)
         }
         qmp_change("vnc", target, !!arg, arg, &err);
     } else {
-        qmp_blockdev_change_medium(device, target, !!arg, arg, &err);
+        qmp_blockdev_change_medium(device, target, !!arg, arg, false, 0, &err);
         if (err &&
             error_get_class(err) == ERROR_CLASS_DEVICE_ENCRYPTED) {
             error_free(err);
diff --git a/qapi/block-core.json b/qapi/block-core.json
index e9fa649..fa08ba9 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -1959,6 +1959,24 @@
 
 
 ##
+# @BlockdevChangeReadOnlyMode:
+#
+# Specifies the new read-only mode of a block device subject to the
+# @blockdev-change-medium command.
+#
+# @retain:      Retains the current read-only mode
+#
+# @read-only:   Makes the device read-only
+#
+# @read-write:  Makes the device writable
+#
+# Since: 2.3
+##
+{ 'enum': 'BlockdevChangeReadOnlyMode',
+  'data': ['retain', 'read-only', 'read-write'] }
+
+
+##
 # @blockdev-change-medium:
 #
 # Changes the medium inserted into a block device by ejecting the current medium
@@ -1973,12 +1991,16 @@
 # @format:          #optional, format to open the new image with (defaults to
 #                   the probed format)
 #
+# @read-only-mode:  #optional, change the read-only mode of the device; defaults
+#                   to 'retain'
+#
 # Since: 2.5
 ##
 { 'command': 'blockdev-change-medium',
   'data': { 'device': 'str',
             'filename': 'str',
-            '*format': 'str' } }
+            '*format': 'str',
+            '*read-only-mode': 'BlockdevChangeReadOnlyMode' } }
 
 
 ##
diff --git a/qmp-commands.hx b/qmp-commands.hx
index f6d9c25..39d6e25 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -4183,7 +4183,7 @@ EQMP
 
     {
         .name       = "blockdev-change-medium",
-        .args_type  = "device:B,filename:F,format:s?",
+        .args_type  = "device:B,filename:F,format:s?,read-only-mode:s?",
         .mhandler.cmd_new = qmp_marshal_blockdev_change_medium,
     },
 
@@ -4199,6 +4199,8 @@ Arguments:
 - "device": device name (json-string)
 - "filename": filename of the new image (json-string)
 - "format": format of the new image (json-string, optional)
+- "read-only-mode": new read-only mode (json-string, optional)
+          - Possible values: "retain" (default), "read-only", "read-write"
 
 Examples:
 
@@ -4210,6 +4212,26 @@ Examples:
                             "format": "raw" } }
 <- { "return": {} }
 
+2. Load a read-only medium into a writable drive
+
+-> { "execute": "blockdev-change-medium",
+             "arguments": { "device": "isa-fd0",
+                            "filename": "/srv/images/ro.img",
+                            "format": "raw",
+                            "read-only-mode": "retain" } }
+
+<- { "error":
+     { "class": "GenericError",
+       "desc": "Could not open '/srv/images/ro.img': Permission denied" } }
+
+-> { "execute": "blockdev-change-medium",
+             "arguments": { "device": "isa-fd0",
+                            "filename": "/srv/images/ro.img",
+                            "format": "raw",
+                            "read-only-mode": "read-only" } }
+
+<- { "return": {} }
+
 EQMP
 
     {
diff --git a/qmp.c b/qmp.c
index 4e44f98..ddc63ea 100644
--- a/qmp.c
+++ b/qmp.c
@@ -414,7 +414,8 @@ void qmp_change(const char *device, const char *target,
     if (strcmp(device, "vnc") == 0) {
         qmp_change_vnc(target, has_arg, arg, errp);
     } else {
-        qmp_blockdev_change_medium(device, target, has_arg, arg, errp);
+        qmp_blockdev_change_medium(device, target, has_arg, arg, false, 0,
+                                   errp);
     }
 }
 
diff --git a/ui/cocoa.m b/ui/cocoa.m
index 2d8e4e2..1554331 100644
--- a/ui/cocoa.m
+++ b/ui/cocoa.m
@@ -1118,6 +1118,7 @@ QemuCocoaView *cocoaView;
                                    [file cStringUsingEncoding:
                                          NSASCIIStringEncoding],
                                    true, "raw",
+                                   false, 0,
                                    &err);
         handleAnyDeviceErrors(err);
     }
-- 
1.8.3.1

[Qemu-devel] [PULL v3 31/41] qemu-io: fix cvtnum lval types

[Kevin Wolf]

From: John Snow <jsnow@redhat.com>

cvtnum() returns int64_t: we should not be storing this
result inside of an int.

In a few cases, we need an extra sprinkling of error handling
where we expect to pass this number on towards a function that
expects something smaller than int64_t.

Reported-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 qemu-io-cmds.c | 125 ++++++++++++++++++++++++++++++++++++++++-----------------
 1 file changed, 89 insertions(+), 36 deletions(-)

diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c
index 6e5d1e4..1e97f69 100644
--- a/qemu-io-cmds.c
+++ b/qemu-io-cmds.c
@@ -294,9 +294,10 @@ static void qemu_io_free(void *p)
     qemu_vfree(p);
 }
 
-static void dump_buffer(const void *buffer, int64_t offset, int len)
+static void dump_buffer(const void *buffer, int64_t offset, int64_t len)
 {
-    int i, j;
+    uint64_t i;
+    int j;
     const uint8_t *p;
 
     for (i = 0, p = buffer; i < len; i += 16) {
@@ -319,7 +320,7 @@ static void dump_buffer(const void *buffer, int64_t offset, int len)
 }
 
 static void print_report(const char *op, struct timeval *t, int64_t offset,
-                         int count, int total, int cnt, int Cflag)
+                         int64_t count, int64_t total, int cnt, int Cflag)
 {
     char s1[64], s2[64], ts[64];
 
@@ -327,12 +328,12 @@ static void print_report(const char *op, struct timeval *t, int64_t offset,
     if (!Cflag) {
         cvtstr((double)total, s1, sizeof(s1));
         cvtstr(tdiv((double)total, *t), s2, sizeof(s2));
-        printf("%s %d/%d bytes at offset %" PRId64 "\n",
+        printf("%s %"PRId64"/%"PRId64" bytes at offset %" PRId64 "\n",
                op, total, count, offset);
         printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n",
                s1, cnt, ts, s2, tdiv((double)cnt, *t));
     } else {/* bytes,ops,time,bytes/sec,ops/sec */
-        printf("%d,%d,%s,%.3f,%.3f\n",
+        printf("%"PRId64",%d,%s,%.3f,%.3f\n",
             total, cnt, ts,
             tdiv((double)total, *t),
             tdiv((double)cnt, *t));
@@ -393,11 +394,15 @@ fail:
     return buf;
 }
 
-static int do_read(BlockBackend *blk, char *buf, int64_t offset, int count,
-                   int *total)
+static int do_read(BlockBackend *blk, char *buf, int64_t offset, int64_t count,
+                   int64_t *total)
 {
     int ret;
 
+    if (count >> 9 > INT_MAX) {
+        return -ERANGE;
+    }
+
     ret = blk_read(blk, offset >> 9, (uint8_t *)buf, count >> 9);
     if (ret < 0) {
         return ret;
@@ -406,11 +411,15 @@ static int do_read(BlockBackend *blk, char *buf, int64_t offset, int count,
     return 1;
 }
 
-static int do_write(BlockBackend *blk, char *buf, int64_t offset, int count,
-                    int *total)
+static int do_write(BlockBackend *blk, char *buf, int64_t offset, int64_t count,
+                    int64_t *total)
 {
     int ret;
 
+    if (count >> 9 > INT_MAX) {
+        return -ERANGE;
+    }
+
     ret = blk_write(blk, offset >> 9, (uint8_t *)buf, count >> 9);
     if (ret < 0) {
         return ret;
@@ -419,9 +428,13 @@ static int do_write(BlockBackend *blk, char *buf, int64_t offset, int count,
     return 1;
 }
 
-static int do_pread(BlockBackend *blk, char *buf, int64_t offset, int count,
-                    int *total)
+static int do_pread(BlockBackend *blk, char *buf, int64_t offset,
+                    int64_t count, int64_t *total)
 {
+    if (count > INT_MAX) {
+        return -ERANGE;
+    }
+
     *total = blk_pread(blk, offset, (uint8_t *)buf, count);
     if (*total < 0) {
         return *total;
@@ -429,9 +442,13 @@ static int do_pread(BlockBackend *blk, char *buf, int64_t offset, int count,
     return 1;
 }
 
-static int do_pwrite(BlockBackend *blk, char *buf, int64_t offset, int count,
-                     int *total)
+static int do_pwrite(BlockBackend *blk, char *buf, int64_t offset,
+                     int64_t count, int64_t *total)
 {
+    if (count > INT_MAX) {
+        return -ERANGE;
+    }
+
     *total = blk_pwrite(blk, offset, (uint8_t *)buf, count);
     if (*total < 0) {
         return *total;
@@ -442,8 +459,8 @@ static int do_pwrite(BlockBackend *blk, char *buf, int64_t offset, int count,
 typedef struct {
     BlockBackend *blk;
     int64_t offset;
-    int count;
-    int *total;
+    int64_t count;
+    int64_t *total;
     int ret;
     bool done;
 } CoWriteZeroes;
@@ -463,8 +480,8 @@ static void coroutine_fn co_write_zeroes_entry(void *opaque)
     *data->total = data->count;
 }
 
-static int do_co_write_zeroes(BlockBackend *blk, int64_t offset, int count,
-                              int *total)
+static int do_co_write_zeroes(BlockBackend *blk, int64_t offset, int64_t count,
+                              int64_t *total)
 {
     Coroutine *co;
     CoWriteZeroes data = {
@@ -475,6 +492,10 @@ static int do_co_write_zeroes(BlockBackend *blk, int64_t offset, int count,
         .done   = false,
     };
 
+    if (count >> BDRV_SECTOR_BITS > INT_MAX) {
+        return -ERANGE;
+    }
+
     co = qemu_coroutine_create(co_write_zeroes_entry);
     qemu_coroutine_enter(co, &data);
     while (!data.done) {
@@ -488,10 +509,14 @@ static int do_co_write_zeroes(BlockBackend *blk, int64_t offset, int count,
 }
 
 static int do_write_compressed(BlockBackend *blk, char *buf, int64_t offset,
-                               int count, int *total)
+                               int64_t count, int64_t *total)
 {
     int ret;
 
+    if (count >> 9 > INT_MAX) {
+        return -ERANGE;
+    }
+
     ret = blk_write_compressed(blk, offset >> 9, (uint8_t *)buf, count >> 9);
     if (ret < 0) {
         return ret;
@@ -501,8 +526,12 @@ static int do_write_compressed(BlockBackend *blk, char *buf, int64_t offset,
 }
 
 static int do_load_vmstate(BlockBackend *blk, char *buf, int64_t offset,
-                           int count, int *total)
+                           int64_t count, int64_t *total)
 {
+    if (count > INT_MAX) {
+        return -ERANGE;
+    }
+
     *total = blk_load_vmstate(blk, (uint8_t *)buf, offset, count);
     if (*total < 0) {
         return *total;
@@ -511,8 +540,12 @@ static int do_load_vmstate(BlockBackend *blk, char *buf, int64_t offset,
 }
 
 static int do_save_vmstate(BlockBackend *blk, char *buf, int64_t offset,
-                           int count, int *total)
+                           int64_t count, int64_t *total)
 {
+    if (count > INT_MAX) {
+        return -ERANGE;
+    }
+
     *total = blk_save_vmstate(blk, (uint8_t *)buf, offset, count);
     if (*total < 0) {
         return *total;
@@ -642,10 +675,11 @@ static int read_f(BlockBackend *blk, int argc, char **argv)
     int c, cnt;
     char *buf;
     int64_t offset;
-    int count;
+    int64_t count;
     /* Some compilers get confused and warn if this is not initialized.  */
-    int total = 0;
-    int pattern = 0, pattern_offset = 0, pattern_count = 0;
+    int64_t total = 0;
+    int pattern = 0;
+    int64_t pattern_offset = 0, pattern_count = 0;
 
     while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != -1) {
         switch (c) {
@@ -712,6 +746,10 @@ static int read_f(BlockBackend *blk, int argc, char **argv)
     if (count < 0) {
         printf("non-numeric length argument -- %s\n", argv[optind]);
         return 0;
+    } else if (count > SIZE_MAX) {
+        printf("length cannot exceed %" PRIu64 ", given %s\n",
+               (uint64_t) SIZE_MAX, argv[optind]);
+        return 0;
     }
 
     if (!Pflag && (lflag || sflag)) {
@@ -734,7 +772,7 @@ static int read_f(BlockBackend *blk, int argc, char **argv)
             return 0;
         }
         if (count & 0x1ff) {
-            printf("count %d is not sector aligned\n",
+            printf("count %"PRId64" is not sector aligned\n",
                    count);
             return 0;
         }
@@ -762,7 +800,7 @@ static int read_f(BlockBackend *blk, int argc, char **argv)
         memset(cmp_buf, pattern, pattern_count);
         if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) {
             printf("Pattern verification failed at offset %"
-                   PRId64 ", %d bytes\n",
+                   PRId64 ", %"PRId64" bytes\n",
                    offset + pattern_offset, pattern_count);
         }
         g_free(cmp_buf);
@@ -957,9 +995,9 @@ static int write_f(BlockBackend *blk, int argc, char **argv)
     int c, cnt;
     char *buf = NULL;
     int64_t offset;
-    int count;
+    int64_t count;
     /* Some compilers get confused and warn if this is not initialized.  */
-    int total = 0;
+    int64_t total = 0;
     int pattern = 0xcd;
 
     while ((c = getopt(argc, argv, "bcCpP:qz")) != -1) {
@@ -1019,6 +1057,10 @@ static int write_f(BlockBackend *blk, int argc, char **argv)
     if (count < 0) {
         printf("non-numeric length argument -- %s\n", argv[optind]);
         return 0;
+    } else if (count > SIZE_MAX) {
+        printf("length cannot exceed %" PRIu64 ", given %s\n",
+               (uint64_t) SIZE_MAX, argv[optind]);
+        return 0;
     }
 
     if (!pflag) {
@@ -1029,7 +1071,7 @@ static int write_f(BlockBackend *blk, int argc, char **argv)
         }
 
         if (count & 0x1ff) {
-            printf("count %d is not sector aligned\n",
+            printf("count %"PRId64" is not sector aligned\n",
                    count);
             return 0;
         }
@@ -1777,8 +1819,7 @@ static int discard_f(BlockBackend *blk, int argc, char **argv)
     struct timeval t1, t2;
     int Cflag = 0, qflag = 0;
     int c, ret;
-    int64_t offset;
-    int count;
+    int64_t offset, count;
 
     while ((c = getopt(argc, argv, "Cq")) != -1) {
         switch (c) {
@@ -1808,6 +1849,11 @@ static int discard_f(BlockBackend *blk, int argc, char **argv)
     if (count < 0) {
         printf("non-numeric length argument -- %s\n", argv[optind]);
         return 0;
+    } else if (count >> BDRV_SECTOR_BITS > INT_MAX) {
+        printf("length cannot exceed %"PRIu64", given %s\n",
+               (uint64_t)INT_MAX << BDRV_SECTOR_BITS,
+               argv[optind]);
+        return 0;
     }
 
     gettimeofday(&t1, NULL);
@@ -1833,11 +1879,10 @@ out:
 static int alloc_f(BlockBackend *blk, int argc, char **argv)
 {
     BlockDriverState *bs = blk_bs(blk);
-    int64_t offset, sector_num;
-    int nb_sectors, remaining;
+    int64_t offset, sector_num, nb_sectors, remaining;
     char s1[64];
-    int num, sum_alloc;
-    int ret;
+    int num, ret;
+    int64_t sum_alloc;
 
     offset = cvtnum(argv[1]);
     if (offset < 0) {
@@ -1854,6 +1899,10 @@ static int alloc_f(BlockBackend *blk, int argc, char **argv)
         if (nb_sectors < 0) {
             printf("non-numeric length argument -- %s\n", argv[2]);
             return 0;
+        } else if (nb_sectors > INT_MAX) {
+            printf("length argument cannot exceed %d, given %s\n",
+                   INT_MAX, argv[2]);
+            return 0;
         }
     } else {
         nb_sectors = 1;
@@ -1881,7 +1930,7 @@ static int alloc_f(BlockBackend *blk, int argc, char **argv)
 
     cvtstr(offset, s1, sizeof(s1));
 
-    printf("%d/%d sectors allocated at offset %s\n",
+    printf("%"PRId64"/%"PRId64" sectors allocated at offset %s\n",
            sum_alloc, nb_sectors, s1);
     return 0;
 }
@@ -2191,10 +2240,14 @@ static const cmdinfo_t sigraise_cmd = {
 
 static int sigraise_f(BlockBackend *blk, int argc, char **argv)
 {
-    int sig = cvtnum(argv[1]);
+    int64_t sig = cvtnum(argv[1]);
     if (sig < 0) {
         printf("non-numeric signal number argument -- %s\n", argv[1]);
         return 0;
+    } else if (sig > NSIG) {
+        printf("signal argument '%s' is too large to be a valid signal\n",
+               argv[1]);
+        return 0;
     }
 
     /* Using raise() to kill this process does not necessarily flush all open
-- 
1.8.3.1

[Qemu-devel] [PULL v3 41/41] iotests: Check for quorum support in test 139

[Kevin Wolf]

From: Alberto Garcia <berto@igalia.com>

The quorum driver is always built in, but it is disabled during
run-time if there's no SHA256 support available (see commit e94867e).

This patch skips the quorum test in iotest 139 in that case.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: 1447172891-20410-1-git-send-email-berto@igalia.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
---
 tests/qemu-iotests/139 | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tests/qemu-iotests/139 b/tests/qemu-iotests/139
index b5470f7..42f78c7 100644
--- a/tests/qemu-iotests/139
+++ b/tests/qemu-iotests/139
@@ -400,6 +400,8 @@ class TestBlockdevDel(iotests.QMPTestCase):
         self.checkBlockDriverState('node1', False)
 
     def testQuorum(self):
+        if not 'quorum' in iotests.qemu_img_pipe('--help'):
+            return
         self.addQuorum('quorum0', 'node0', 'node1')
         # We cannot remove the children of a Quorum device
         self.delBlockDriverState('node0', expect_error = True)
-- 
1.8.3.1

Re: [Qemu-devel] [PULL v3 00/41] Block layer patches

[Peter Maydell]

On 11 November 2015 at 16:08, Kevin Wolf <kwolf@redhat.com> wrote:
> The following changes since commit 3c07587d49458341510360557c849e93e9afaf59:
>
>   Merge remote-tracking branch 'remotes/dgibson/tags/ppc-next-20151111' into staging (2015-11-11 09:34:18 +0000)
>
> are available in the git repository at:
>
>
>   git://repo.or.cz/qemu/kevin.git tags/for-upstream
>
> for you to fetch changes up to 4d07c720f44beafd10907cecfd5b8a57622243c1:
>
>   Merge remote-tracking branch 'mreitz/tags/pull-block-for-kevin-2015-11-11' into queue-block (2015-11-11 17:02:02 +0100)
>
> ----------------------------------------------------------------
>
> Block layer patches
>
> ----------------------------------------------------------------

Applied, thanks.

-- PMM