diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/raw-posix.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/block/raw-posix.c b/block/raw-posix.c index 9286fb8b0d..6b72470599 100644 --- a/block/raw-posix.c +++ b/block/raw-posix.c @@ -69,6 +69,10 @@ #include <sys/diskslice.h> #endif +#ifdef CONFIG_XFS +#include <xfs/xfs.h> +#endif + //#define DEBUG_FLOPPY //#define DEBUG_BLOCK @@ -120,6 +124,9 @@ typedef struct BDRVRawState { #endif uint8_t *aligned_buf; unsigned aligned_buf_size; +#ifdef CONFIG_XFS + bool is_xfs : 1; +#endif } BDRVRawState; static int fd_open(BlockDriverState *bs); @@ -196,6 +203,12 @@ static int raw_open_common(BlockDriverState *bs, const char *filename, #endif } +#ifdef CONFIG_XFS + if (platform_test_xfs_fd(s->fd)) { + s->is_xfs = 1; + } +#endif + return 0; out_free_buf: @@ -740,6 +753,37 @@ static int raw_flush(BlockDriverState *bs) return qemu_fdatasync(s->fd); } +#ifdef CONFIG_XFS +static int xfs_discard(BDRVRawState *s, int64_t sector_num, int nb_sectors) +{ + struct xfs_flock64 fl; + + memset(&fl, 0, sizeof(fl)); + fl.l_whence = SEEK_SET; + fl.l_start = sector_num << 9; + fl.l_len = (int64_t)nb_sectors << 9; + + if (xfsctl(NULL, s->fd, XFS_IOC_UNRESVSP64, &fl) < 0) { + DEBUG_BLOCK_PRINT("cannot punch hole (%s)\n", strerror(errno)); + return -errno; + } + + return 0; +} +#endif + +static int raw_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors) +{ +#ifdef CONFIG_XFS + BDRVRawState *s = bs->opaque; + + if (s->is_xfs) { + return xfs_discard(s, sector_num, nb_sectors); + } +#endif + + return 0; +} static QEMUOptionParameter raw_create_options[] = { { @@ -761,6 +805,7 @@ static BlockDriver bdrv_file = { .bdrv_close = raw_close, .bdrv_create = raw_create, .bdrv_flush = raw_flush, + .bdrv_discard = raw_discard, .bdrv_aio_readv = raw_aio_readv, .bdrv_aio_writev = raw_aio_writev, |