201 lines
6.0 KiB
C
201 lines
6.0 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 http://www.opensolaris.org/os/licensing.
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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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/*
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* Copyright (c) 2011, Lawrence Livermore National Security, LLC.
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*/
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#ifndef _SYS_ZPL_H
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#define _SYS_ZPL_H
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#include <sys/mntent.h>
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#include <sys/vfs.h>
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#include <linux/aio.h>
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#include <linux/dcache_compat.h>
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#include <linux/exportfs.h>
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#include <linux/falloc.h>
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#include <linux/parser.h>
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#include <linux/task_io_accounting_ops.h>
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#include <linux/vfs_compat.h>
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#include <linux/writeback.h>
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#include <linux/xattr_compat.h>
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/* zpl_inode.c */
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extern void zpl_vap_init(vattr_t *vap, struct inode *dir,
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zpl_umode_t mode, cred_t *cr);
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extern const struct inode_operations zpl_inode_operations;
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extern const struct inode_operations zpl_dir_inode_operations;
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extern const struct inode_operations zpl_symlink_inode_operations;
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extern const struct inode_operations zpl_special_inode_operations;
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extern dentry_operations_t zpl_dentry_operations;
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/* zpl_file.c */
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extern ssize_t zpl_read_common(struct inode *ip, const char *buf,
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size_t len, loff_t *ppos, uio_seg_t segment, int flags,
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cred_t *cr);
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extern ssize_t zpl_write_common(struct inode *ip, const char *buf,
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size_t len, loff_t *ppos, uio_seg_t segment, int flags,
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cred_t *cr);
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#if defined(HAVE_FILE_FALLOCATE) || defined(HAVE_INODE_FALLOCATE)
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extern long zpl_fallocate_common(struct inode *ip, int mode,
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loff_t offset, loff_t len);
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#endif /* defined(HAVE_FILE_FALLOCATE) || defined(HAVE_INODE_FALLOCATE) */
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extern const struct address_space_operations zpl_address_space_operations;
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extern const struct file_operations zpl_file_operations;
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extern const struct file_operations zpl_dir_file_operations;
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/* zpl_super.c */
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extern void zpl_prune_sb(int64_t nr_to_scan, void *arg);
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extern const struct super_operations zpl_super_operations;
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extern const struct export_operations zpl_export_operations;
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extern struct file_system_type zpl_fs_type;
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/* zpl_xattr.c */
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extern ssize_t zpl_xattr_list(struct dentry *dentry, char *buf, size_t size);
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extern int zpl_xattr_security_init(struct inode *ip, struct inode *dip,
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const struct qstr *qstr);
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#if defined(CONFIG_FS_POSIX_ACL)
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extern int zpl_set_acl(struct inode *ip, struct posix_acl *acl, int type);
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extern struct posix_acl *zpl_get_acl(struct inode *ip, int type);
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#if !defined(HAVE_GET_ACL)
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#if defined(HAVE_CHECK_ACL_WITH_FLAGS)
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extern int zpl_check_acl(struct inode *inode, int mask, unsigned int flags);
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#elif defined(HAVE_CHECK_ACL)
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extern int zpl_check_acl(struct inode *inode, int mask);
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#elif defined(HAVE_PERMISSION_WITH_NAMEIDATA)
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extern int zpl_permission(struct inode *ip, int mask, struct nameidata *nd);
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#elif defined(HAVE_PERMISSION)
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extern int zpl_permission(struct inode *ip, int mask);
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#endif /* HAVE_CHECK_ACL | HAVE_PERMISSION */
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#endif /* HAVE_GET_ACL */
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extern int zpl_init_acl(struct inode *ip, struct inode *dir);
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extern int zpl_chmod_acl(struct inode *ip);
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#else
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static inline int
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zpl_init_acl(struct inode *ip, struct inode *dir)
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{
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return (0);
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}
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static inline int
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zpl_chmod_acl(struct inode *ip)
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{
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return (0);
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}
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#endif /* CONFIG_FS_POSIX_ACL */
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extern xattr_handler_t *zpl_xattr_handlers[];
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/* zpl_ctldir.c */
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extern const struct file_operations zpl_fops_root;
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extern const struct inode_operations zpl_ops_root;
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extern const struct file_operations zpl_fops_snapdir;
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extern const struct inode_operations zpl_ops_snapdir;
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#ifdef HAVE_AUTOMOUNT
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extern const struct dentry_operations zpl_dops_snapdirs;
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#else
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extern const struct inode_operations zpl_ops_snapdirs;
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#endif /* HAVE_AUTOMOUNT */
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extern const struct file_operations zpl_fops_shares;
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extern const struct inode_operations zpl_ops_shares;
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#if defined(HAVE_VFS_ITERATE) || defined(HAVE_VFS_ITERATE_SHARED)
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#define ZPL_DIR_CONTEXT_INIT(_dirent, _actor, _pos) { \
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.actor = _actor, \
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.pos = _pos, \
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}
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typedef struct dir_context zpl_dir_context_t;
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#define zpl_dir_emit dir_emit
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#define zpl_dir_emit_dot dir_emit_dot
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#define zpl_dir_emit_dotdot dir_emit_dotdot
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#define zpl_dir_emit_dots dir_emit_dots
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#else
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typedef struct zpl_dir_context {
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void *dirent;
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const filldir_t actor;
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loff_t pos;
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} zpl_dir_context_t;
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#define ZPL_DIR_CONTEXT_INIT(_dirent, _actor, _pos) { \
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.dirent = _dirent, \
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.actor = _actor, \
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.pos = _pos, \
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}
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static inline bool
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zpl_dir_emit(zpl_dir_context_t *ctx, const char *name, int namelen,
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uint64_t ino, unsigned type)
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{
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return (!ctx->actor(ctx->dirent, name, namelen, ctx->pos, ino, type));
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}
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static inline bool
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zpl_dir_emit_dot(struct file *file, zpl_dir_context_t *ctx)
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{
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return (ctx->actor(ctx->dirent, ".", 1, ctx->pos,
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file_inode(file)->i_ino, DT_DIR) == 0);
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}
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static inline bool
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zpl_dir_emit_dotdot(struct file *file, zpl_dir_context_t *ctx)
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{
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return (ctx->actor(ctx->dirent, "..", 2, ctx->pos,
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parent_ino(file_dentry(file)), DT_DIR) == 0);
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}
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static inline bool
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zpl_dir_emit_dots(struct file *file, zpl_dir_context_t *ctx)
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{
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if (ctx->pos == 0) {
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if (!zpl_dir_emit_dot(file, ctx))
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return (false);
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ctx->pos = 1;
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}
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if (ctx->pos == 1) {
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if (!zpl_dir_emit_dotdot(file, ctx))
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return (false);
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ctx->pos = 2;
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}
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return (true);
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}
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#endif /* HAVE_VFS_ITERATE */
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/*
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* Linux 4.18, inode times converted from timespec to timespec64.
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*/
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#if defined(HAVE_INODE_TIMESPEC64_TIMES)
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#define zpl_inode_timespec_trunc(ts, gran) timespec64_trunc(ts, gran)
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#else
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#define zpl_inode_timespec_trunc(ts, gran) timespec_trunc(ts, gran)
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#endif
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#endif /* _SYS_ZPL_H */
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