b24413180f560 (Greg Kroah-Hartman 2017-11-01 15:07:57 +0100 1) /* SPDX-License-Identifier: GPL-2.0 */
0158de12b00e7 (Fabian Frederick 2014-06-06 14:37:24 -0700 2) #ifdef pr_fmt
0158de12b00e7 (Fabian Frederick 2014-06-06 14:37:24 -0700 3) #undef pr_fmt
0158de12b00e7 (Fabian Frederick 2014-06-06 14:37:24 -0700 4) #endif
0158de12b00e7 (Fabian Frederick 2014-06-06 14:37:24 -0700 5)
0158de12b00e7 (Fabian Frederick 2014-06-06 14:37:24 -0700 6) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
0158de12b00e7 (Fabian Frederick 2014-06-06 14:37:24 -0700 7)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 8) #include <linux/types.h>
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 9) #include <linux/fs.h>
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 10) #include <linux/buffer_head.h>
d2d58e0e0d6c7 (Fabian Frederick 2017-04-15 08:54:56 +0200 11) #include "amigaffs.h"
7d135a5d50a08 (Matthias Kaehlcke 2008-07-25 19:44:51 -0700 12) #include <linux/mutex.h>
3dd847820d138 (Artem Bityutskiy 2012-06-06 18:56:57 +0300 13) #include <linux/workqueue.h>
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 14)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 15) /* Ugly macros make the code more pretty. */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 16)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 17) #define GET_END_PTR(st,p,sz) ((st *)((char *)(p)+((sz)-sizeof(st))))
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 18) #define AFFS_GET_HASHENTRY(data,hashkey) be32_to_cpu(((struct dir_front *)data)->hashtable[hashkey])
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 19) #define AFFS_BLOCK(sb, bh, blk) (AFFS_HEAD(bh)->table[AFFS_SB(sb)->s_hashsize-1-(blk)])
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 20)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 21) #define AFFS_HEAD(bh) ((struct affs_head *)(bh)->b_data)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 22) #define AFFS_TAIL(sb, bh) ((struct affs_tail *)((bh)->b_data+(sb)->s_blocksize-sizeof(struct affs_tail)))
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 23) #define AFFS_ROOT_HEAD(bh) ((struct affs_root_head *)(bh)->b_data)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 24) #define AFFS_ROOT_TAIL(sb, bh) ((struct affs_root_tail *)((bh)->b_data+(sb)->s_blocksize-sizeof(struct affs_root_tail)))
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 25) #define AFFS_DATA_HEAD(bh) ((struct affs_data_head *)(bh)->b_data)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 26) #define AFFS_DATA(bh) (((struct affs_data_head *)(bh)->b_data)->data)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 27)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 28) #define AFFS_CACHE_SIZE PAGE_SIZE
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 29)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 30) #define AFFS_LC_SIZE (AFFS_CACHE_SIZE/sizeof(u32)/2)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 31) #define AFFS_AC_SIZE (AFFS_CACHE_SIZE/sizeof(struct affs_ext_key)/2)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 32) #define AFFS_AC_MASK (AFFS_AC_SIZE-1)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 33)
f157853e407c0 (Fabian Frederick 2015-02-17 13:46:23 -0800 34) #define AFFSNAMEMAX 30U
f157853e407c0 (Fabian Frederick 2015-02-17 13:46:23 -0800 35)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 36) struct affs_ext_key {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 37) u32 ext; /* idx of the extended block */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 38) u32 key; /* block number */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 39) };
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 40)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 41) /*
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 42) * affs fs inode data in memory
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 43) */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 44) struct affs_inode_info {
dca3c33652e43 (Roman Zippel 2008-04-29 17:02:20 +0200 45) atomic_t i_opencnt;
6060c07d476eb (Davidlohr Bueso 2019-10-27 15:01:43 -0700 46) struct mutex i_link_lock; /* Protects internal inode access. */
6060c07d476eb (Davidlohr Bueso 2019-10-27 15:01:43 -0700 47) struct mutex i_ext_lock; /* Protects internal inode access. */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 48) #define i_hash_lock i_ext_lock
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 49) u32 i_blkcnt; /* block count */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 50) u32 i_extcnt; /* extended block count */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 51) u32 *i_lc; /* linear cache of extended blocks */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 52) u32 i_lc_size;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 53) u32 i_lc_shift;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 54) u32 i_lc_mask;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 55) struct affs_ext_key *i_ac; /* associative cache of extended blocks */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 56) u32 i_ext_last; /* last accessed extended block */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 57) struct buffer_head *i_ext_bh; /* bh of last extended block */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 58) loff_t mmu_private;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 59) u32 i_protect; /* unused attribute bits */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 60) u32 i_lastalloc; /* last allocated block */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 61) int i_pa_cnt; /* number of preallocated blocks */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 62) struct inode vfs_inode;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 63) };
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 64)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 65) /* short cut to get to the affs specific inode data */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 66) static inline struct affs_inode_info *AFFS_I(struct inode *inode)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 67) {
db6172c411945 (Rasmus Villemoes 2015-03-19 12:28:04 +0100 68) return container_of(inode, struct affs_inode_info, vfs_inode);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 69) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 70)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 71) /*
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 72) * super-block data in memory
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 73) *
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 74) * Block numbers are adjusted for their actual size
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 75) *
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 76) */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 77)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 78) struct affs_bm_info {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 79) u32 bm_key; /* Disk block number */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 80) u32 bm_free; /* Free blocks in here */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 81) };
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 82)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 83) struct affs_sb_info {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 84) int s_partition_size; /* Partition size in blocks. */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 85) int s_reserved; /* Number of reserved blocks. */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 86) //u32 s_blksize; /* Initial device blksize */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 87) u32 s_data_blksize; /* size of the data block w/o header */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 88) u32 s_root_block; /* FFS root block number. */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 89) int s_hashsize; /* Size of hash table. */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 90) unsigned long s_flags; /* See below. */
8fed10be0029a (Eric W. Biederman 2012-02-07 16:20:16 -0800 91) kuid_t s_uid; /* uid to override */
8fed10be0029a (Eric W. Biederman 2012-02-07 16:20:16 -0800 92) kgid_t s_gid; /* gid to override */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 93) umode_t s_mode; /* mode to override */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 94) struct buffer_head *s_root_bh; /* Cached root block. */
7d135a5d50a08 (Matthias Kaehlcke 2008-07-25 19:44:51 -0700 95) struct mutex s_bmlock; /* Protects bitmap access. */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 96) struct affs_bm_info *s_bitmap; /* Bitmap infos. */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 97) u32 s_bmap_count; /* # of bitmap blocks. */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 98) u32 s_bmap_bits; /* # of bits in one bitmap blocks */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 99) u32 s_last_bmap;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 100) struct buffer_head *s_bmap_bh;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 101) char *s_prefix; /* Prefix for volumes and assigns. */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 102) char s_volume[32]; /* Volume prefix for absolute symlinks. */
29333920a5a46 (Al Viro 2010-01-24 00:04:07 -0500 103) spinlock_t symlink_lock; /* protects the previous two */
a215fef7edfdc (Artem Bityutskiy 2012-06-06 18:56:56 +0300 104) struct super_block *sb; /* the VFS superblock object */
3dd847820d138 (Artem Bityutskiy 2012-06-06 18:56:57 +0300 105) int work_queued; /* non-zero delayed work is queued */
3dd847820d138 (Artem Bityutskiy 2012-06-06 18:56:57 +0300 106) struct delayed_work sb_work; /* superblock flush delayed work */
3dd847820d138 (Artem Bityutskiy 2012-06-06 18:56:57 +0300 107) spinlock_t work_lock; /* protects sb_work and work_queued */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 108) };
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 109)
a0016ff2867ad (Fabian Frederick 2015-04-16 12:48:15 -0700 110) #define AFFS_MOUNT_SF_INTL 0x0001 /* International filesystem. */
a0016ff2867ad (Fabian Frederick 2015-04-16 12:48:15 -0700 111) #define AFFS_MOUNT_SF_BM_VALID 0x0002 /* Bitmap is valid. */
a0016ff2867ad (Fabian Frederick 2015-04-16 12:48:15 -0700 112) #define AFFS_MOUNT_SF_IMMUTABLE 0x0004 /* Protection bits cannot be changed */
a0016ff2867ad (Fabian Frederick 2015-04-16 12:48:15 -0700 113) #define AFFS_MOUNT_SF_QUIET 0x0008 /* chmod errors will be not reported */
a0016ff2867ad (Fabian Frederick 2015-04-16 12:48:15 -0700 114) #define AFFS_MOUNT_SF_SETUID 0x0010 /* Ignore Amiga uid */
a0016ff2867ad (Fabian Frederick 2015-04-16 12:48:15 -0700 115) #define AFFS_MOUNT_SF_SETGID 0x0020 /* Ignore Amiga gid */
a0016ff2867ad (Fabian Frederick 2015-04-16 12:48:15 -0700 116) #define AFFS_MOUNT_SF_SETMODE 0x0040 /* Ignore Amiga protection bits */
a0016ff2867ad (Fabian Frederick 2015-04-16 12:48:15 -0700 117) #define AFFS_MOUNT_SF_MUFS 0x0100 /* Use MUFS uid/gid mapping */
a0016ff2867ad (Fabian Frederick 2015-04-16 12:48:15 -0700 118) #define AFFS_MOUNT_SF_OFS 0x0200 /* Old filesystem */
a0016ff2867ad (Fabian Frederick 2015-04-16 12:48:15 -0700 119) #define AFFS_MOUNT_SF_PREFIX 0x0400 /* Buffer for prefix is allocated */
a0016ff2867ad (Fabian Frederick 2015-04-16 12:48:15 -0700 120) #define AFFS_MOUNT_SF_VERBOSE 0x0800 /* Talk about fs when mounting */
a0016ff2867ad (Fabian Frederick 2015-04-16 12:48:15 -0700 121) #define AFFS_MOUNT_SF_NO_TRUNCATE 0x1000 /* Don't truncate filenames */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 122)
6bf445ce35353 (Fabian Frederick 2015-04-16 12:48:18 -0700 123) #define affs_clear_opt(o, opt) (o &= ~AFFS_MOUNT_##opt)
6bf445ce35353 (Fabian Frederick 2015-04-16 12:48:18 -0700 124) #define affs_set_opt(o, opt) (o |= AFFS_MOUNT_##opt)
6bf445ce35353 (Fabian Frederick 2015-04-16 12:48:18 -0700 125) #define affs_test_opt(o, opt) ((o) & AFFS_MOUNT_##opt)
6bf445ce35353 (Fabian Frederick 2015-04-16 12:48:18 -0700 126)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 127) /* short cut to get to the affs specific sb data */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 128) static inline struct affs_sb_info *AFFS_SB(struct super_block *sb)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 129) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 130) return sb->s_fs_info;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 131) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 132)
3dd847820d138 (Artem Bityutskiy 2012-06-06 18:56:57 +0300 133) void affs_mark_sb_dirty(struct super_block *sb);
3dd847820d138 (Artem Bityutskiy 2012-06-06 18:56:57 +0300 134)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 135) /* amigaffs.c */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 136)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 137) extern int affs_insert_hash(struct inode *inode, struct buffer_head *bh);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 138) extern int affs_remove_hash(struct inode *dir, struct buffer_head *rem_bh);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 139) extern int affs_remove_header(struct dentry *dentry);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 140) extern u32 affs_checksum_block(struct super_block *sb, struct buffer_head *bh);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 141) extern void affs_fix_checksum(struct super_block *sb, struct buffer_head *bh);
c1618208511f0 (Fabian Frederick 2017-02-27 14:27:54 -0800 142) extern void affs_secs_to_datestamp(time64_t secs, struct affs_date *ds);
c1618208511f0 (Fabian Frederick 2017-02-27 14:27:54 -0800 143) extern umode_t affs_prot_to_mode(u32 prot);
c1618208511f0 (Fabian Frederick 2017-02-27 14:27:54 -0800 144) extern void affs_mode_to_prot(struct inode *inode);
1ee54b099acec (Fabian Frederick 2014-12-12 16:57:49 -0800 145) __printf(3, 4)
8ca577223f752 (Fabian Frederick 2014-04-07 15:39:01 -0700 146) extern void affs_error(struct super_block *sb, const char *function,
8ca577223f752 (Fabian Frederick 2014-04-07 15:39:01 -0700 147) const char *fmt, ...);
1ee54b099acec (Fabian Frederick 2014-12-12 16:57:49 -0800 148) __printf(3, 4)
8ca577223f752 (Fabian Frederick 2014-04-07 15:39:01 -0700 149) extern void affs_warning(struct super_block *sb, const char *function,
8ca577223f752 (Fabian Frederick 2014-04-07 15:39:01 -0700 150) const char *fmt, ...);
8ca577223f752 (Fabian Frederick 2014-04-07 15:39:01 -0700 151) extern bool affs_nofilenametruncate(const struct dentry *dentry);
8ca577223f752 (Fabian Frederick 2014-04-07 15:39:01 -0700 152) extern int affs_check_name(const unsigned char *name, int len,
8ca577223f752 (Fabian Frederick 2014-04-07 15:39:01 -0700 153) bool notruncate);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 154) extern int affs_copy_name(unsigned char *bstr, struct dentry *dentry);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 155)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 156) /* bitmap. c */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 157)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 158) extern u32 affs_count_free_blocks(struct super_block *s);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 159) extern void affs_free_block(struct super_block *sb, u32 block);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 160) extern u32 affs_alloc_block(struct inode *inode, u32 goal);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 161) extern int affs_init_bitmap(struct super_block *sb, int *flags);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 162) extern void affs_free_bitmap(struct super_block *sb);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 163)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 164) /* namei.c */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 165)
ed4433d723941 (Fabian Frederick 2017-02-27 14:27:49 -0800 166) extern const struct export_operations affs_export_ops;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 167) extern int affs_hash_name(struct super_block *sb, const u8 *name, unsigned int len);
00cd8dd3bf95f (Al Viro 2012-06-10 17:13:09 -0400 168) extern struct dentry *affs_lookup(struct inode *dir, struct dentry *dentry, unsigned int);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 169) extern int affs_unlink(struct inode *dir, struct dentry *dentry);
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 170) extern int affs_create(struct user_namespace *mnt_userns, struct inode *dir,
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 171) struct dentry *dentry, umode_t mode, bool);
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 172) extern int affs_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 173) struct dentry *dentry, umode_t mode);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 174) extern int affs_rmdir(struct inode *dir, struct dentry *dentry);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 175) extern int affs_link(struct dentry *olddentry, struct inode *dir,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 176) struct dentry *dentry);
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 177) extern int affs_symlink(struct user_namespace *mnt_userns,
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 178) struct inode *dir, struct dentry *dentry,
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 179) const char *symname);
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 180) extern int affs_rename2(struct user_namespace *mnt_userns,
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 181) struct inode *old_dir, struct dentry *old_dentry,
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 182) struct inode *new_dir, struct dentry *new_dentry,
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 183) unsigned int flags);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 184)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 185) /* inode.c */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 186)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 187) extern struct inode *affs_new_inode(struct inode *dir);
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 188) extern int affs_notify_change(struct user_namespace *mnt_userns,
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 189) struct dentry *dentry, struct iattr *attr);
f053ddde75750 (Al Viro 2010-06-06 10:16:41 -0400 190) extern void affs_evict_inode(struct inode *inode);
210f855963ba5 (David Howells 2008-02-07 00:15:29 -0800 191) extern struct inode *affs_iget(struct super_block *sb,
210f855963ba5 (David Howells 2008-02-07 00:15:29 -0800 192) unsigned long ino);
a9185b41a4f84 (Christoph Hellwig 2010-03-05 09:21:37 +0100 193) extern int affs_write_inode(struct inode *inode,
a9185b41a4f84 (Christoph Hellwig 2010-03-05 09:21:37 +0100 194) struct writeback_control *wbc);
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 195) extern int affs_add_entry(struct inode *dir, struct inode *inode,
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 196) struct dentry *dentry, s32 type);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 197)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 198) /* file.c */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 199)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 200) void affs_free_prealloc(struct inode *inode);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 201) extern void affs_truncate(struct inode *);
02c24a82187d5 (Josef Bacik 2011-07-16 20:44:56 -0400 202) int affs_file_fsync(struct file *, loff_t, loff_t, int);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 203)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 204) /* dir.c */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 205)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 206) extern void affs_dir_truncate(struct inode *);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 207)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 208) /* jump tables */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 209)
754661f143e70 (Arjan van de Ven 2007-02-12 00:55:38 -0800 210) extern const struct inode_operations affs_file_inode_operations;
754661f143e70 (Arjan van de Ven 2007-02-12 00:55:38 -0800 211) extern const struct inode_operations affs_dir_inode_operations;
754661f143e70 (Arjan van de Ven 2007-02-12 00:55:38 -0800 212) extern const struct inode_operations affs_symlink_inode_operations;
4b6f5d20b04dc (Arjan van de Ven 2006-03-28 01:56:42 -0800 213) extern const struct file_operations affs_file_operations;
4b6f5d20b04dc (Arjan van de Ven 2006-03-28 01:56:42 -0800 214) extern const struct file_operations affs_file_operations_ofs;
4b6f5d20b04dc (Arjan van de Ven 2006-03-28 01:56:42 -0800 215) extern const struct file_operations affs_dir_operations;
f5e54d6e53a20 (Christoph Hellwig 2006-06-28 04:26:44 -0700 216) extern const struct address_space_operations affs_symlink_aops;
f5e54d6e53a20 (Christoph Hellwig 2006-06-28 04:26:44 -0700 217) extern const struct address_space_operations affs_aops;
f5e54d6e53a20 (Christoph Hellwig 2006-06-28 04:26:44 -0700 218) extern const struct address_space_operations affs_aops_ofs;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 219)
e16404ed0f3f3 (Al Viro 2009-02-20 05:55:13 +0000 220) extern const struct dentry_operations affs_dentry_operations;
a129880dafaa3 (Al Viro 2011-01-12 16:45:19 -0500 221) extern const struct dentry_operations affs_intl_dentry_operations;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 222)
d5de9fd594eba (Fabian Frederick 2017-02-27 14:27:46 -0800 223) static inline bool affs_validblock(struct super_block *sb, int block)
d5de9fd594eba (Fabian Frederick 2017-02-27 14:27:46 -0800 224) {
d5de9fd594eba (Fabian Frederick 2017-02-27 14:27:46 -0800 225) return(block >= AFFS_SB(sb)->s_reserved &&
d5de9fd594eba (Fabian Frederick 2017-02-27 14:27:46 -0800 226) block < AFFS_SB(sb)->s_partition_size);
d5de9fd594eba (Fabian Frederick 2017-02-27 14:27:46 -0800 227) }
d5de9fd594eba (Fabian Frederick 2017-02-27 14:27:46 -0800 228)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 229) static inline void
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 230) affs_set_blocksize(struct super_block *sb, int size)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 231) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 232) sb_set_blocksize(sb, size);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 233) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 234) static inline struct buffer_head *
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 235) affs_bread(struct super_block *sb, int block)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 236) {
9606d9aa858ae (Fabian Frederick 2014-06-06 14:37:25 -0700 237) pr_debug("%s: %d\n", __func__, block);
d5de9fd594eba (Fabian Frederick 2017-02-27 14:27:46 -0800 238) if (affs_validblock(sb, block))
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 239) return sb_bread(sb, block);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 240) return NULL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 241) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 242) static inline struct buffer_head *
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 243) affs_getblk(struct super_block *sb, int block)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 244) {
9606d9aa858ae (Fabian Frederick 2014-06-06 14:37:25 -0700 245) pr_debug("%s: %d\n", __func__, block);
d5de9fd594eba (Fabian Frederick 2017-02-27 14:27:46 -0800 246) if (affs_validblock(sb, block))
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 247) return sb_getblk(sb, block);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 248) return NULL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 249) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 250) static inline struct buffer_head *
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 251) affs_getzeroblk(struct super_block *sb, int block)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 252) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 253) struct buffer_head *bh;
9606d9aa858ae (Fabian Frederick 2014-06-06 14:37:25 -0700 254) pr_debug("%s: %d\n", __func__, block);
d5de9fd594eba (Fabian Frederick 2017-02-27 14:27:46 -0800 255) if (affs_validblock(sb, block)) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 256) bh = sb_getblk(sb, block);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 257) lock_buffer(bh);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 258) memset(bh->b_data, 0 , sb->s_blocksize);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 259) set_buffer_uptodate(bh);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 260) unlock_buffer(bh);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 261) return bh;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 262) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 263) return NULL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 264) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 265) static inline struct buffer_head *
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 266) affs_getemptyblk(struct super_block *sb, int block)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 267) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 268) struct buffer_head *bh;
9606d9aa858ae (Fabian Frederick 2014-06-06 14:37:25 -0700 269) pr_debug("%s: %d\n", __func__, block);
d5de9fd594eba (Fabian Frederick 2017-02-27 14:27:46 -0800 270) if (affs_validblock(sb, block)) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 271) bh = sb_getblk(sb, block);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 272) wait_on_buffer(bh);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 273) set_buffer_uptodate(bh);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 274) return bh;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 275) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 276) return NULL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 277) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 278) static inline void
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 279) affs_brelse(struct buffer_head *bh)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 280) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 281) if (bh)
9606d9aa858ae (Fabian Frederick 2014-06-06 14:37:25 -0700 282) pr_debug("%s: %lld\n", __func__, (long long) bh->b_blocknr);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 283) brelse(bh);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 284) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 285)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 286) static inline void
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 287) affs_adjust_checksum(struct buffer_head *bh, u32 val)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 288) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 289) u32 tmp = be32_to_cpu(((__be32 *)bh->b_data)[5]);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 290) ((__be32 *)bh->b_data)[5] = cpu_to_be32(tmp - val);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 291) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 292) static inline void
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 293) affs_adjust_bitmapchecksum(struct buffer_head *bh, u32 val)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 294) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 295) u32 tmp = be32_to_cpu(((__be32 *)bh->b_data)[0]);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 296) ((__be32 *)bh->b_data)[0] = cpu_to_be32(tmp - val);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 297) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 298)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 299) static inline void
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 300) affs_lock_link(struct inode *inode)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 301) {
6060c07d476eb (Davidlohr Bueso 2019-10-27 15:01:43 -0700 302) mutex_lock(&AFFS_I(inode)->i_link_lock);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 303) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 304) static inline void
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 305) affs_unlock_link(struct inode *inode)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 306) {
6060c07d476eb (Davidlohr Bueso 2019-10-27 15:01:43 -0700 307) mutex_unlock(&AFFS_I(inode)->i_link_lock);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 308) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 309) static inline void
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 310) affs_lock_dir(struct inode *inode)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 311) {
6060c07d476eb (Davidlohr Bueso 2019-10-27 15:01:43 -0700 312) mutex_lock_nested(&AFFS_I(inode)->i_hash_lock, SINGLE_DEPTH_NESTING);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 313) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 314) static inline void
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 315) affs_unlock_dir(struct inode *inode)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 316) {
6060c07d476eb (Davidlohr Bueso 2019-10-27 15:01:43 -0700 317) mutex_unlock(&AFFS_I(inode)->i_hash_lock);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 318) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 319) static inline void
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 320) affs_lock_ext(struct inode *inode)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 321) {
6060c07d476eb (Davidlohr Bueso 2019-10-27 15:01:43 -0700 322) mutex_lock(&AFFS_I(inode)->i_ext_lock);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 323) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 324) static inline void
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 325) affs_unlock_ext(struct inode *inode)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 326) {
6060c07d476eb (Davidlohr Bueso 2019-10-27 15:01:43 -0700 327) mutex_unlock(&AFFS_I(inode)->i_ext_lock);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 328) }
VisionFive2 Linux kernel
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