diff options
| author | Hanna Reitz <hreitz@redhat.com> | 2022-06-20 18:26:54 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2023-02-01 16:52:33 +0100 |
| commit | 7f36a50ab4e7d39369cac67be4ba9d6ee4081dc0 (patch) | |
| tree | 6385f10ac51a4d800d0ab53c83bdde006f5af3ab /block/file-posix.c | |
| parent | 3716470b24f0f63090d59bcf28ad8fe6fb7835bd (diff) | |
block/file: Add file-specific image info
Add some (optional) information that the file driver can provide for
image files, namely the extent size hint.
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220620162704.80987-3-hreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/file-posix.c')
| -rw-r--r-- | block/file-posix.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/block/file-posix.c b/block/file-posix.c index fa6aeea99d..d3073a7caa 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -3092,6 +3092,34 @@ raw_co_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) return 0; } +static ImageInfoSpecific *raw_get_specific_info(BlockDriverState *bs, + Error **errp) +{ + ImageInfoSpecificFile *file_info = g_new0(ImageInfoSpecificFile, 1); + ImageInfoSpecific *spec_info = g_new(ImageInfoSpecific, 1); + + *spec_info = (ImageInfoSpecific){ + .type = IMAGE_INFO_SPECIFIC_KIND_FILE, + .u.file.data = file_info, + }; + +#ifdef FS_IOC_FSGETXATTR + { + BDRVRawState *s = bs->opaque; + struct fsxattr attr; + int ret; + + ret = ioctl(s->fd, FS_IOC_FSGETXATTR, &attr); + if (!ret && attr.fsx_extsize != 0) { + file_info->has_extent_size_hint = true; + file_info->extent_size_hint = attr.fsx_extsize; + } + } +#endif + + return spec_info; +} + static BlockStatsSpecificFile get_blockstats_specific_file(BlockDriverState *bs) { BDRVRawState *s = bs->opaque; @@ -3325,6 +3353,7 @@ BlockDriver bdrv_file = { .bdrv_co_truncate = raw_co_truncate, .bdrv_co_getlength = raw_co_getlength, .bdrv_co_get_info = raw_co_get_info, + .bdrv_get_specific_info = raw_get_specific_info, .bdrv_co_get_allocated_file_size = raw_co_get_allocated_file_size, .bdrv_get_specific_stats = raw_get_specific_stats, .bdrv_check_perm = raw_check_perm, @@ -3696,6 +3725,7 @@ static BlockDriver bdrv_host_device = { .bdrv_co_truncate = raw_co_truncate, .bdrv_co_getlength = raw_co_getlength, .bdrv_co_get_info = raw_co_get_info, + .bdrv_get_specific_info = raw_get_specific_info, .bdrv_co_get_allocated_file_size = raw_co_get_allocated_file_size, .bdrv_get_specific_stats = hdev_get_specific_stats, .bdrv_check_perm = raw_check_perm, |