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fa330646b9
We only use it on a specific way: to punch a hole in (make sparse) a region of a file, in order to implement TRIM-like behaviour. So, call the op "deallocate", and move the Linux-style mode flags down into the Linux implementation, since they're an implementation detail. FreeBSD gets a no-op stub (for the moment). Sponsored-by: https://despairlabs.com/sponsor/ Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Alexander Motin <mav@FreeBSD.org> Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de> Signed-off-by: Rob Norris <robn@despairlabs.com> Closes #16496
65 lines
2.1 KiB
C
65 lines
2.1 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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#ifndef _SYS_ZFS_FILE_H
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#define _SYS_ZFS_FILE_H
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#include <sys/zfs_context.h>
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#ifndef _KERNEL
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typedef struct zfs_file {
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int f_fd;
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int f_dump_fd;
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} zfs_file_t;
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#elif defined(__linux__) || defined(__FreeBSD__)
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typedef struct file zfs_file_t;
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#else
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#error "unknown OS"
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#endif
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typedef struct zfs_file_attr {
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uint64_t zfa_size; /* file size */
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mode_t zfa_mode; /* file type */
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} zfs_file_attr_t;
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int zfs_file_open(const char *path, int flags, int mode, zfs_file_t **fp);
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void zfs_file_close(zfs_file_t *fp);
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int zfs_file_write(zfs_file_t *fp, const void *buf, size_t len, ssize_t *resid);
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int zfs_file_pwrite(zfs_file_t *fp, const void *buf, size_t len, loff_t off,
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ssize_t *resid);
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int zfs_file_read(zfs_file_t *fp, void *buf, size_t len, ssize_t *resid);
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int zfs_file_pread(zfs_file_t *fp, void *buf, size_t len, loff_t off,
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ssize_t *resid);
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int zfs_file_seek(zfs_file_t *fp, loff_t *offp, int whence);
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int zfs_file_getattr(zfs_file_t *fp, zfs_file_attr_t *zfattr);
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int zfs_file_fsync(zfs_file_t *fp, int flags);
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int zfs_file_deallocate(zfs_file_t *fp, loff_t offset, loff_t len);
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loff_t zfs_file_off(zfs_file_t *fp);
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int zfs_file_unlink(const char *);
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zfs_file_t *zfs_file_get(int fd);
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void zfs_file_put(zfs_file_t *fp);
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void *zfs_file_private(zfs_file_t *fp);
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#endif /* _SYS_ZFS_FILE_H */
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