summaryrefslogtreecommitdiffstats
path: root/fs/gfs2/inode.h
diff options
context:
space:
mode:
Diffstat (limited to 'fs/gfs2/inode.h')
-rw-r--r--fs/gfs2/inode.h137
1 files changed, 137 insertions, 0 deletions
diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h
new file mode 100644
index 000000000..0264d514d
--- /dev/null
+++ b/fs/gfs2/inode.h
@@ -0,0 +1,137 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
+ * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
+ */
+
+#ifndef __INODE_DOT_H__
+#define __INODE_DOT_H__
+
+#include <linux/fs.h>
+#include <linux/buffer_head.h>
+#include <linux/mm.h>
+#include "util.h"
+
+bool gfs2_release_folio(struct folio *folio, gfp_t gfp_mask);
+extern int gfs2_internal_read(struct gfs2_inode *ip,
+ char *buf, loff_t *pos, unsigned size);
+extern void gfs2_set_aops(struct inode *inode);
+
+static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
+{
+ return !ip->i_height;
+}
+
+static inline int gfs2_is_jdata(const struct gfs2_inode *ip)
+{
+ return ip->i_diskflags & GFS2_DIF_JDATA;
+}
+
+static inline bool gfs2_is_ordered(const struct gfs2_sbd *sdp)
+{
+ return sdp->sd_args.ar_data == GFS2_DATA_ORDERED;
+}
+
+static inline bool gfs2_is_writeback(const struct gfs2_sbd *sdp)
+{
+ return sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK;
+}
+
+static inline int gfs2_is_dir(const struct gfs2_inode *ip)
+{
+ return S_ISDIR(ip->i_inode.i_mode);
+}
+
+static inline void gfs2_set_inode_blocks(struct inode *inode, u64 blocks)
+{
+ inode->i_blocks = blocks <<
+ (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
+}
+
+static inline u64 gfs2_get_inode_blocks(const struct inode *inode)
+{
+ return inode->i_blocks >>
+ (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
+}
+
+static inline void gfs2_add_inode_blocks(struct inode *inode, s64 change)
+{
+ change <<= inode->i_blkbits - GFS2_BASIC_BLOCK_SHIFT;
+ gfs2_assert(GFS2_SB(inode), (change >= 0 || inode->i_blocks >= -change));
+ inode->i_blocks += change;
+}
+
+static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr,
+ u64 no_formal_ino)
+{
+ return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino;
+}
+
+static inline void gfs2_inum_out(const struct gfs2_inode *ip,
+ struct gfs2_dirent *dent)
+{
+ dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
+ dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr);
+}
+
+static inline int gfs2_check_internal_file_size(struct inode *inode,
+ u64 minsize, u64 maxsize)
+{
+ u64 size = i_size_read(inode);
+ if (size < minsize || size > maxsize)
+ goto err;
+ if (size & (BIT(inode->i_blkbits) - 1))
+ goto err;
+ return 0;
+err:
+ gfs2_consist_inode(GFS2_I(inode));
+ return -EIO;
+}
+
+extern struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type,
+ u64 no_addr, u64 no_formal_ino,
+ unsigned int blktype);
+extern struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr,
+ u64 no_formal_ino,
+ unsigned int blktype);
+
+extern int gfs2_inode_refresh(struct gfs2_inode *ip);
+
+extern struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
+ int is_root);
+extern int gfs2_permission(struct user_namespace *mnt_userns,
+ struct inode *inode, int mask);
+extern struct inode *gfs2_lookup_simple(struct inode *dip, const char *name);
+extern void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf);
+extern int gfs2_open_common(struct inode *inode, struct file *file);
+extern loff_t gfs2_seek_data(struct file *file, loff_t offset);
+extern loff_t gfs2_seek_hole(struct file *file, loff_t offset);
+
+extern const struct file_operations gfs2_file_fops_nolock;
+extern const struct file_operations gfs2_dir_fops_nolock;
+
+extern int gfs2_fileattr_get(struct dentry *dentry, struct fileattr *fa);
+extern int gfs2_fileattr_set(struct user_namespace *mnt_userns,
+ struct dentry *dentry, struct fileattr *fa);
+extern void gfs2_set_inode_flags(struct inode *inode);
+
+#ifdef CONFIG_GFS2_FS_LOCKING_DLM
+extern const struct file_operations gfs2_file_fops;
+extern const struct file_operations gfs2_dir_fops;
+
+static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
+{
+ return sdp->sd_args.ar_localflocks;
+}
+#else /* Single node only */
+#define gfs2_file_fops gfs2_file_fops_nolock
+#define gfs2_dir_fops gfs2_dir_fops_nolock
+
+static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
+{
+ return 1;
+}
+#endif /* CONFIG_GFS2_FS_LOCKING_DLM */
+
+#endif /* __INODE_DOT_H__ */
+