ff4a549a34
Add Linux compatibility header stubs needed to compile extents_status.c: - backing-dev.h: Backing device info stub - dax.h: Direct Access (DAX) stubs - iomap.h: I/O mapping operations and structures - mman.h: Memory mapping flags - mount.h: VFS mount structures - pagevec.h: Page vector batching - pfn_t.h: Page frame number type - posix_acl_xattr.h: POSIX ACL xattr definitions - proc_fs.h: Proc filesystem stub - uio.h: User I/O vector definitions - xattr.h: Extended attributes - trace/events/ext4.h: Trace event stubs Co-developed-by: Claude Opus 4.5 <noreply@anthropic.com> Signed-off-by: Simon Glass <simon.glass@canonical.com>
93 lines
2.2 KiB
C
93 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef LINUX_IOMAP_H
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#define LINUX_IOMAP_H
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#include <linux/types.h>
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struct bio;
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struct inode;
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struct iomap_iter;
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struct kiocb;
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struct iov_iter;
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struct vm_fault;
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/* iomap type values */
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#define IOMAP_HOLE 0
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#define IOMAP_DELALLOC 1
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#define IOMAP_MAPPED 2
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#define IOMAP_UNWRITTEN 3
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#define IOMAP_INLINE 4
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/* iomap flags */
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#define IOMAP_F_NEW (1U << 0)
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#define IOMAP_F_DIRTY (1U << 1)
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#define IOMAP_F_SHARED (1U << 2)
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#define IOMAP_F_MERGED (1U << 3)
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#define IOMAP_F_BUFFER_HEAD (1U << 4)
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#define IOMAP_F_ZONE_APPEND (1U << 5)
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#define IOMAP_F_PRIVATE (1U << 12)
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/* Flags for iomap_begin */
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#define IOMAP_WRITE (1 << 0)
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#define IOMAP_ZERO (1 << 1)
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#define IOMAP_REPORT (1 << 2)
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#define IOMAP_FAULT (1 << 3)
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#define IOMAP_DIRECT (1 << 4)
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#define IOMAP_NOWAIT (1 << 5)
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#define IOMAP_OVERWRITE_ONLY (1 << 6)
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#define IOMAP_UNSHARE (1 << 7)
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#define IOMAP_DAX (1 << 8)
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struct iomap {
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u64 addr;
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loff_t offset;
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u64 length;
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u16 type;
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u16 flags;
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struct block_device *bdev;
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struct dax_device *dax_dev;
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void *inline_data;
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};
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struct iomap_ops {
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int (*iomap_begin)(struct inode *inode, loff_t pos, loff_t length,
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unsigned int flags, struct iomap *iomap,
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struct iomap *srcmap);
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int (*iomap_end)(struct inode *inode, loff_t pos, loff_t length,
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ssize_t written, unsigned int flags,
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struct iomap *iomap);
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};
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struct iomap_dio_ops {
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int (*end_io)(struct kiocb *iocb, ssize_t size, int error,
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unsigned int flags);
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void (*submit_io)(const struct iomap_iter *iter, struct bio *bio,
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loff_t file_offset);
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struct bio_set *bio_set;
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};
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struct iomap_iter;
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/* Stubs for U-Boot - these are not actually used in read-only mode */
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static inline ssize_t
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iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter,
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const struct iomap_ops *ops, const struct iomap_dio_ops *dops,
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unsigned int dio_flags, void *private, size_t done_before)
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{
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return -EOPNOTSUPP;
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}
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static inline loff_t
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iomap_seek_hole(struct inode *inode, loff_t pos, const struct iomap_ops *ops)
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{
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return -EOPNOTSUPP;
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}
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static inline loff_t
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iomap_seek_data(struct inode *inode, loff_t pos, const struct iomap_ops *ops)
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{
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return -EOPNOTSUPP;
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}
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#endif /* LINUX_IOMAP_H */
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