diff options
| author | Fam Zheng <famcool@gmail.com> | 2011-07-12 19:56:39 +0800 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2011-07-19 15:39:08 +0200 |
| commit | 4a1d5e1fded54358ddc4d8cbd53388ca7c93499b (patch) | |
| tree | e317502ecc47e7cf31ab53bbc3f4dd2c9b92c7f0 /block/raw-posix.c | |
| parent | ae261c86aaed62e7acddafab8262a2bf286d40b7 (diff) | |
block: add bdrv_get_allocated_file_size() operation
qemu-img.c wants to count allocated file size of image. Previously it
counts a single bs->file by 'stat' or Window API. As VMDK introduces
multiple file support, the operation becomes format specific with
platform specific meanwhile.
The functions are moved to block/raw-{posix,win32}.c and qemu-img.c calls
bdrv_get_allocated_file_size to count the bs. And also added VMDK code
to count his own extents.
Signed-off-by: Fam Zheng <famcool@gmail.com>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/raw-posix.c')
| -rw-r--r-- | block/raw-posix.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/block/raw-posix.c b/block/raw-posix.c index 34b64aa205..cd89c8312a 100644 --- a/block/raw-posix.c +++ b/block/raw-posix.c @@ -793,6 +793,17 @@ static int64_t raw_getlength(BlockDriverState *bs) } #endif +static int64_t raw_get_allocated_file_size(BlockDriverState *bs) +{ + struct stat st; + BDRVRawState *s = bs->opaque; + + if (fstat(s->fd, &st) < 0) { + return -errno; + } + return (int64_t)st.st_blocks * 512; +} + static int raw_create(const char *filename, QEMUOptionParameter *options) { int fd; @@ -888,6 +899,8 @@ static BlockDriver bdrv_file = { .bdrv_truncate = raw_truncate, .bdrv_getlength = raw_getlength, + .bdrv_get_allocated_file_size + = raw_get_allocated_file_size, .create_options = raw_create_options, }; @@ -1156,6 +1169,8 @@ static BlockDriver bdrv_host_device = { .bdrv_read = raw_read, .bdrv_write = raw_write, .bdrv_getlength = raw_getlength, + .bdrv_get_allocated_file_size + = raw_get_allocated_file_size, /* generic scsi device */ #ifdef __linux__ @@ -1277,6 +1292,8 @@ static BlockDriver bdrv_host_floppy = { .bdrv_read = raw_read, .bdrv_write = raw_write, .bdrv_getlength = raw_getlength, + .bdrv_get_allocated_file_size + = raw_get_allocated_file_size, /* removable device support */ .bdrv_is_inserted = floppy_is_inserted, @@ -1380,6 +1397,8 @@ static BlockDriver bdrv_host_cdrom = { .bdrv_read = raw_read, .bdrv_write = raw_write, .bdrv_getlength = raw_getlength, + .bdrv_get_allocated_file_size + = raw_get_allocated_file_size, /* removable device support */ .bdrv_is_inserted = cdrom_is_inserted, @@ -1503,6 +1522,8 @@ static BlockDriver bdrv_host_cdrom = { .bdrv_read = raw_read, .bdrv_write = raw_write, .bdrv_getlength = raw_getlength, + .bdrv_get_allocated_file_size + = raw_get_allocated_file_size, /* removable device support */ .bdrv_is_inserted = cdrom_is_inserted, |