diff options
Diffstat (limited to 'sys/fs/udf')
| -rw-r--r-- | sys/fs/udf/udf_vnops.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/sys/fs/udf/udf_vnops.c b/sys/fs/udf/udf_vnops.c index 5570808..bde9215 100644 --- a/sys/fs/udf/udf_vnops.c +++ b/sys/fs/udf/udf_vnops.c @@ -419,6 +419,14 @@ udf_print(struct vop_print_args *ap) #define blkoff(udfmp, loc) ((loc) & (udfmp)->bmask) #define lblktosize(udfmp, blk) ((blk) << (udfmp)->bshift) +static inline int +is_data_in_fentry(const struct udf_node *node) +{ + const struct file_entry *fentry = node->fentry; + + return ((le16toh(fentry->icbtag.flags) & 0x7) == 3); +} + static int udf_read(struct vop_read_args *ap) { @@ -426,7 +434,9 @@ udf_read(struct vop_read_args *ap) struct uio *uio = ap->a_uio; struct udf_node *node = VTON(vp); struct udf_mnt *udfmp; + struct file_entry *fentry; struct buf *bp; + uint8_t *data; daddr_t lbn, rablock; off_t diff, fsize; int error = 0; @@ -436,6 +446,22 @@ udf_read(struct vop_read_args *ap) return (0); if (uio->uio_offset < 0) return (EINVAL); + + if (is_data_in_fentry(node)) { + fentry = node->fentry; + data = &fentry->data[le32toh(fentry->l_ea)]; + fsize = le32toh(fentry->l_ad); + + n = uio->uio_resid; + diff = fsize - uio->uio_offset; + if (diff <= 0) + return (0); + if (diff < n) + n = diff; + error = uiomove(data + uio->uio_offset, (int)n, uio); + return (error); + } + fsize = le64toh(node->fentry->inf_len); udfmp = node->udfmp; do { |
