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| author | Eric Blake <eblake@redhat.com> | 2017-04-29 14:14:12 -0500 |
|---|---|---|
| committer | Max Reitz <mreitz@redhat.com> | 2017-05-11 14:28:05 +0200 |
| commit | 4401fdc77cb6d79e53ce2fc2193444cad8b95749 (patch) | |
| tree | b4bab705e4ae3a5889afaae015861b31b27e7ea2 | |
| parent | 1bce6b4ce3ba03015bdf16d40c1bbe33d8b6031b (diff) | |
| download | qemu-4401fdc77cb6d79e53ce2fc2193444cad8b95749.zip qemu-4401fdc77cb6d79e53ce2fc2193444cad8b95749.tar.gz qemu-4401fdc77cb6d79e53ce2fc2193444cad8b95749.tar.bz2 | |
qemu-io: Switch 'alloc' command to byte-based length
For the 'alloc' command, accepting an offset in bytes but a length
in sectors, and reporting output in sectors, is confusing. Do
everything in bytes, and adjust the expected output accordingly.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-id: 20170429191419.30051-3-eblake@redhat.com
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
| -rw-r--r-- | qemu-io-cmds.c | 30 | ||||
| -rw-r--r-- | tests/qemu-iotests/019.out | 8 | ||||
| -rw-r--r-- | tests/qemu-iotests/common.pattern | 2 |
3 files changed, 23 insertions, 17 deletions
diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c index 6a0024b..1e0ebb4 100644 --- a/qemu-io-cmds.c +++ b/qemu-io-cmds.c @@ -1760,7 +1760,7 @@ out: static int alloc_f(BlockBackend *blk, int argc, char **argv) { BlockDriverState *bs = blk_bs(blk); - int64_t offset, sector_num, nb_sectors, remaining; + int64_t offset, sector_num, nb_sectors, remaining, count; char s1[64]; int num, ret; int64_t sum_alloc; @@ -1776,18 +1776,24 @@ static int alloc_f(BlockBackend *blk, int argc, char **argv) } if (argc == 3) { - nb_sectors = cvtnum(argv[2]); - if (nb_sectors < 0) { - print_cvtnum_err(nb_sectors, argv[2]); + count = cvtnum(argv[2]); + if (count < 0) { + print_cvtnum_err(count, argv[2]); return 0; - } else if (nb_sectors > INT_MAX) { - printf("length argument cannot exceed %d, given %s\n", - INT_MAX, argv[2]); + } else if (count > INT_MAX * BDRV_SECTOR_SIZE) { + printf("length argument cannot exceed %llu, given %s\n", + INT_MAX * BDRV_SECTOR_SIZE, argv[2]); return 0; } } else { - nb_sectors = 1; + count = BDRV_SECTOR_SIZE; + } + if (!QEMU_IS_ALIGNED(count, BDRV_SECTOR_SIZE)) { + printf("%" PRId64 " is not a sector-aligned value for 'count'\n", + count); + return 0; } + nb_sectors = count >> BDRV_SECTOR_BITS; remaining = nb_sectors; sum_alloc = 0; @@ -1811,8 +1817,8 @@ static int alloc_f(BlockBackend *blk, int argc, char **argv) cvtstr(offset, s1, sizeof(s1)); - printf("%"PRId64"/%"PRId64" sectors allocated at offset %s\n", - sum_alloc, nb_sectors, s1); + printf("%"PRId64"/%"PRId64" bytes allocated at offset %s\n", + sum_alloc << BDRV_SECTOR_BITS, nb_sectors << BDRV_SECTOR_BITS, s1); return 0; } @@ -1822,8 +1828,8 @@ static const cmdinfo_t alloc_cmd = { .argmin = 1, .argmax = 2, .cfunc = alloc_f, - .args = "off [sectors]", - .oneline = "checks if a sector is present in the file", + .args = "offset [count]", + .oneline = "checks if offset is allocated in the file", }; diff --git a/tests/qemu-iotests/019.out b/tests/qemu-iotests/019.out index 0124264..17a7c03 100644 --- a/tests/qemu-iotests/019.out +++ b/tests/qemu-iotests/019.out @@ -542,8 +542,8 @@ Testing conversion with -B TEST_DIR/t.IMGFMT.base Checking if backing clusters are allocated when they shouldn't -0/128 sectors allocated at offset 1 MiB -0/128 sectors allocated at offset 4.001 GiB +0/65536 bytes allocated at offset 1 MiB +0/65536 bytes allocated at offset 4.001 GiB Reading === IO: pattern 42 @@ -1086,8 +1086,8 @@ Testing conversion with -o backing_file=TEST_DIR/t.IMGFMT.base Checking if backing clusters are allocated when they shouldn't -0/128 sectors allocated at offset 1 MiB -0/128 sectors allocated at offset 4.001 GiB +0/65536 bytes allocated at offset 1 MiB +0/65536 bytes allocated at offset 4.001 GiB Reading === IO: pattern 42 diff --git a/tests/qemu-iotests/common.pattern b/tests/qemu-iotests/common.pattern index ddfbca1..34f4a8d 100644 --- a/tests/qemu-iotests/common.pattern +++ b/tests/qemu-iotests/common.pattern @@ -18,7 +18,7 @@ function do_is_allocated() { local start=$1 - local size=$(( $2 / 512)) + local size=$2 local step=$3 local count=$4 |