1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 4 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. 5 */ 6 7 #ifndef __INODE_DOT_H__ 8 #define __INODE_DOT_H__ 9 10 #include <linux/fs.h> 11 #include <linux/buffer_head.h> 12 #include <linux/mm.h> 13 #include "util.h" 14 15 bool gfs2_release_folio(struct folio *folio, gfp_t gfp_mask); 16 ssize_t gfs2_internal_read(struct gfs2_inode *ip, 17 char *buf, loff_t *pos, size_t size); 18 void gfs2_set_aops(struct inode *inode); 19 20 static inline int gfs2_is_stuffed(const struct gfs2_inode *ip) 21 { 22 return !ip->i_height; 23 } 24 25 static inline int gfs2_is_jdata(const struct gfs2_inode *ip) 26 { 27 return ip->i_diskflags & GFS2_DIF_JDATA; 28 } 29 30 static inline bool gfs2_is_ordered(const struct gfs2_sbd *sdp) 31 { 32 return sdp->sd_args.ar_data == GFS2_DATA_ORDERED; 33 } 34 35 static inline bool gfs2_is_writeback(const struct gfs2_sbd *sdp) 36 { 37 return sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK; 38 } 39 40 static inline int gfs2_is_dir(const struct gfs2_inode *ip) 41 { 42 return S_ISDIR(ip->i_inode.i_mode); 43 } 44 45 static inline void gfs2_set_inode_blocks(struct inode *inode, u64 blocks) 46 { 47 inode->i_blocks = blocks << (inode->i_blkbits - 9); 48 } 49 50 static inline u64 gfs2_get_inode_blocks(const struct inode *inode) 51 { 52 return inode->i_blocks >> (inode->i_blkbits - 9); 53 } 54 55 static inline void gfs2_add_inode_blocks(struct inode *inode, s64 change) 56 { 57 change <<= inode->i_blkbits - 9; 58 gfs2_assert(GFS2_SB(inode), (change >= 0 || inode->i_blocks >= -change)); 59 inode->i_blocks += change; 60 } 61 62 static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr, 63 u64 no_formal_ino) 64 { 65 return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino; 66 } 67 68 static inline void gfs2_inum_out(const struct gfs2_inode *ip, 69 struct gfs2_dirent *dent) 70 { 71 dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino); 72 dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr); 73 } 74 75 static inline int gfs2_check_internal_file_size(struct inode *inode, 76 u64 minsize, u64 maxsize) 77 { 78 u64 size = i_size_read(inode); 79 if (size < minsize || size > maxsize) 80 goto err; 81 if (size & (BIT(inode->i_blkbits) - 1)) 82 goto err; 83 return 0; 84 err: 85 gfs2_consist_inode(GFS2_I(inode)); 86 return -EIO; 87 } 88 89 struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type, 90 u64 no_addr, u64 no_formal_ino, 91 unsigned int blktype); 92 struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr, 93 u64 no_formal_ino, 94 unsigned int blktype); 95 96 int gfs2_inode_refresh(struct gfs2_inode *ip); 97 98 struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name, 99 int is_root); 100 int gfs2_permission(struct mnt_idmap *idmap, 101 struct inode *inode, int mask); 102 struct inode *gfs2_lookup_meta(struct inode *dip, const char *name); 103 void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf); 104 int gfs2_open_common(struct inode *inode, struct file *file); 105 loff_t gfs2_seek_data(struct file *file, loff_t offset); 106 loff_t gfs2_seek_hole(struct file *file, loff_t offset); 107 108 extern const struct file_operations gfs2_file_fops_nolock; 109 extern const struct file_operations gfs2_dir_fops_nolock; 110 111 int gfs2_fileattr_get(struct dentry *dentry, struct fileattr *fa); 112 int gfs2_fileattr_set(struct mnt_idmap *idmap, 113 struct dentry *dentry, struct fileattr *fa); 114 void gfs2_set_inode_flags(struct inode *inode); 115 116 #ifdef CONFIG_GFS2_FS_LOCKING_DLM 117 extern const struct file_operations gfs2_file_fops; 118 extern const struct file_operations gfs2_dir_fops; 119 120 static inline int gfs2_localflocks(const struct gfs2_sbd *sdp) 121 { 122 return sdp->sd_args.ar_localflocks; 123 } 124 #else /* Single node only */ 125 #define gfs2_file_fops gfs2_file_fops_nolock 126 #define gfs2_dir_fops gfs2_dir_fops_nolock 127 128 static inline int gfs2_localflocks(const struct gfs2_sbd *sdp) 129 { 130 return 1; 131 } 132 #endif /* CONFIG_GFS2_FS_LOCKING_DLM */ 133 134 #endif /* __INODE_DOT_H__ */ 135 136