mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-30 08:02:30 +00:00
cddf8a2c4a
Replace fiemap_check_flags with a fiemap_prep helper that also takes the inode and mapped range, and performs the sanity check and truncation previously done in fiemap_check_range. This way the validation is inside the file system itself and thus properly works for the stacked overlayfs case as well. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Amir Goldstein <amir73il@gmail.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Link: https://lore.kernel.org/r/20200523073016.2944131-7-hch@lst.de Signed-off-by: Theodore Ts'o <tytso@mit.edu>
25 lines
845 B
C
25 lines
845 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _LINUX_FIEMAP_H
|
|
#define _LINUX_FIEMAP_H 1
|
|
|
|
#include <uapi/linux/fiemap.h>
|
|
#include <linux/fs.h>
|
|
|
|
struct fiemap_extent_info {
|
|
unsigned int fi_flags; /* Flags as passed from user */
|
|
unsigned int fi_extents_mapped; /* Number of mapped extents */
|
|
unsigned int fi_extents_max; /* Size of fiemap_extent array */
|
|
struct fiemap_extent __user *fi_extents_start; /* Start of
|
|
fiemap_extent array */
|
|
};
|
|
|
|
int fiemap_prep(struct inode *inode, struct fiemap_extent_info *fieinfo,
|
|
u64 start, u64 *len, u32 supported_flags);
|
|
int fiemap_fill_next_extent(struct fiemap_extent_info *info, u64 logical,
|
|
u64 phys, u64 len, u32 flags);
|
|
|
|
int generic_block_fiemap(struct inode *inode,
|
|
struct fiemap_extent_info *fieinfo, u64 start, u64 len,
|
|
get_block_t *get_block);
|
|
|
|
#endif /* _LINUX_FIEMAP_H 1 */
|