FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/include/sys/zfs_file.h

     /*
      * CDDL HEADER START
      *
      * The contents of this file are subject to the terms of the
      * Common Development and Distribution License (the "License").
      * You may not use this file except in compliance with the License.
      *
      * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      * or https://opensource.org/licenses/CDDL-1.0.
     * See the License for the specific language governing permissions
     * and limitations under the License.
     *
     * When distributing Covered Code, include this CDDL HEADER in each
     * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     * If applicable, add the following below this CDDL HEADER, with the
     * fields enclosed by brackets "[]" replaced with your own identifying
     * information: Portions Copyright [yyyy] [name of copyright owner]
     *
     * CDDL HEADER END
     */
    
    #ifndef _SYS_ZFS_FILE_H
    #define _SYS_ZFS_FILE_H
    
    #include <sys/zfs_context.h>
    
    #ifndef _KERNEL
    typedef struct zfs_file {
            int f_fd;
            int f_dump_fd;
    } zfs_file_t;
    #elif defined(__linux__) || defined(__FreeBSD__)
    typedef struct file zfs_file_t;
    #else
    #error "unknown OS"
    #endif
    
    typedef struct zfs_file_attr {
            uint64_t        zfa_size;       /* file size */
            mode_t          zfa_mode;       /* file type */
    } zfs_file_attr_t;
    
    int zfs_file_open(const char *path, int flags, int mode, zfs_file_t **fp);
    void zfs_file_close(zfs_file_t *fp);
    
    int zfs_file_write(zfs_file_t *fp, const void *buf, size_t len, ssize_t *resid);
    int zfs_file_pwrite(zfs_file_t *fp, const void *buf, size_t len, loff_t off,
        ssize_t *resid);
    int zfs_file_read(zfs_file_t *fp, void *buf, size_t len, ssize_t *resid);
    int zfs_file_pread(zfs_file_t *fp, void *buf, size_t len, loff_t off,
        ssize_t *resid);
    
    int zfs_file_seek(zfs_file_t *fp, loff_t *offp, int whence);
    int zfs_file_getattr(zfs_file_t *fp, zfs_file_attr_t *zfattr);
    int zfs_file_fsync(zfs_file_t *fp, int flags);
    int zfs_file_fallocate(zfs_file_t *fp, int mode, loff_t offset, loff_t len);
    loff_t zfs_file_off(zfs_file_t *fp);
    int zfs_file_unlink(const char *);
    
    zfs_file_t *zfs_file_get(int fd);
    void zfs_file_put(zfs_file_t *fp);
    void *zfs_file_private(zfs_file_t *fp);
    
    #endif /* _SYS_ZFS_FILE_H */

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