b24413180f560 (Greg Kroah-Hartman 2017-11-01 15:07:57 +0100 1) // SPDX-License-Identifier: GPL-2.0
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 2) /*
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 3) * linux/fs/affs/inode.c
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 4) *
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 5) * (c) 1996 Hans-Joachim Widmaier - Rewritten
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 6) *
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 7) * (C) 1993 Ray Burr - Modified for Amiga FFS filesystem.
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 8) *
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 9) * (C) 1992 Eric Youngdale Modified for ISO9660 filesystem.
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 10) *
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 11) * (C) 1991 Linus Torvalds - minix filesystem
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 12) */
e8edc6e03a5c8 (Alexey Dobriyan 2007-05-21 01:22:52 +0400 13) #include <linux/sched.h>
5b825c3af1d8a (Ingo Molnar 2017-02-02 17:54:15 +0100 14) #include <linux/cred.h>
5a0e3ad6af866 (Tejun Heo 2010-03-24 17:04:11 +0900 15) #include <linux/gfp.h>
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 16) #include "affs.h"
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 17)
210f855963ba5 (David Howells 2008-02-07 00:15:29 -0800 18) struct inode *affs_iget(struct super_block *sb, unsigned long ino)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 19) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 20) struct affs_sb_info *sbi = AFFS_SB(sb);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 21) struct buffer_head *bh;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 22) struct affs_tail *tail;
210f855963ba5 (David Howells 2008-02-07 00:15:29 -0800 23) struct inode *inode;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 24) u32 block;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 25) u32 size;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 26) u32 prot;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 27) u16 id;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 28)
210f855963ba5 (David Howells 2008-02-07 00:15:29 -0800 29) inode = iget_locked(sb, ino);
210f855963ba5 (David Howells 2008-02-07 00:15:29 -0800 30) if (!inode)
210f855963ba5 (David Howells 2008-02-07 00:15:29 -0800 31) return ERR_PTR(-ENOMEM);
210f855963ba5 (David Howells 2008-02-07 00:15:29 -0800 32) if (!(inode->i_state & I_NEW))
210f855963ba5 (David Howells 2008-02-07 00:15:29 -0800 33) return inode;
210f855963ba5 (David Howells 2008-02-07 00:15:29 -0800 34)
9606d9aa858ae (Fabian Frederick 2014-06-06 14:37:25 -0700 35) pr_debug("affs_iget(%lu)\n", inode->i_ino);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 36)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 37) block = inode->i_ino;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 38) bh = affs_bread(sb, block);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 39) if (!bh) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 40) affs_warning(sb, "read_inode", "Cannot read block %d", block);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 41) goto bad_inode;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 42) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 43) if (affs_checksum_block(sb, bh) || be32_to_cpu(AFFS_HEAD(bh)->ptype) != T_SHORT) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 44) affs_warning(sb,"read_inode",
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 45) "Checksum or type (ptype=%d) error on inode %d",
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 46) AFFS_HEAD(bh)->ptype, block);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 47) goto bad_inode;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 48) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 49)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 50) tail = AFFS_TAIL(sb, bh);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 51) prot = be32_to_cpu(tail->protect);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 52)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 53) inode->i_size = 0;
bfe8684869601 (Miklos Szeredi 2011-10-28 14:13:29 +0200 54) set_nlink(inode, 1);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 55) inode->i_mode = 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 56) AFFS_I(inode)->i_extcnt = 1;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 57) AFFS_I(inode)->i_ext_last = ~1;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 58) AFFS_I(inode)->i_protect = prot;
dca3c33652e43 (Roman Zippel 2008-04-29 17:02:20 +0200 59) atomic_set(&AFFS_I(inode)->i_opencnt, 0);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 60) AFFS_I(inode)->i_blkcnt = 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 61) AFFS_I(inode)->i_lc = NULL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 62) AFFS_I(inode)->i_lc_size = 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 63) AFFS_I(inode)->i_lc_shift = 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 64) AFFS_I(inode)->i_lc_mask = 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 65) AFFS_I(inode)->i_ac = NULL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 66) AFFS_I(inode)->i_ext_bh = NULL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 67) AFFS_I(inode)->mmu_private = 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 68) AFFS_I(inode)->i_lastalloc = 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 69) AFFS_I(inode)->i_pa_cnt = 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 70)
79bda4d510f80 (Fabian Frederick 2015-04-16 12:48:24 -0700 71) if (affs_test_opt(sbi->s_flags, SF_SETMODE))
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 72) inode->i_mode = sbi->s_mode;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 73) else
c1618208511f0 (Fabian Frederick 2017-02-27 14:27:54 -0800 74) inode->i_mode = affs_prot_to_mode(prot);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 75)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 76) id = be16_to_cpu(tail->uid);
79bda4d510f80 (Fabian Frederick 2015-04-16 12:48:24 -0700 77) if (id == 0 || affs_test_opt(sbi->s_flags, SF_SETUID))
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 78) inode->i_uid = sbi->s_uid;
79bda4d510f80 (Fabian Frederick 2015-04-16 12:48:24 -0700 79) else if (id == 0xFFFF && affs_test_opt(sbi->s_flags, SF_MUFS))
8fed10be0029a (Eric W. Biederman 2012-02-07 16:20:16 -0800 80) i_uid_write(inode, 0);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 81) else
8fed10be0029a (Eric W. Biederman 2012-02-07 16:20:16 -0800 82) i_uid_write(inode, id);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 83)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 84) id = be16_to_cpu(tail->gid);
79bda4d510f80 (Fabian Frederick 2015-04-16 12:48:24 -0700 85) if (id == 0 || affs_test_opt(sbi->s_flags, SF_SETGID))
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 86) inode->i_gid = sbi->s_gid;
79bda4d510f80 (Fabian Frederick 2015-04-16 12:48:24 -0700 87) else if (id == 0xFFFF && affs_test_opt(sbi->s_flags, SF_MUFS))
8fed10be0029a (Eric W. Biederman 2012-02-07 16:20:16 -0800 88) i_gid_write(inode, 0);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 89) else
8fed10be0029a (Eric W. Biederman 2012-02-07 16:20:16 -0800 90) i_gid_write(inode, id);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 91)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 92) switch (be32_to_cpu(tail->stype)) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 93) case ST_ROOT:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 94) inode->i_uid = sbi->s_uid;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 95) inode->i_gid = sbi->s_gid;
df561f6688fef (Gustavo A. R. Silva 2020-08-23 17:36:59 -0500 96) fallthrough;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 97) case ST_USERDIR:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 98) if (be32_to_cpu(tail->stype) == ST_USERDIR ||
79bda4d510f80 (Fabian Frederick 2015-04-16 12:48:24 -0700 99) affs_test_opt(sbi->s_flags, SF_SETMODE)) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 100) if (inode->i_mode & S_IRUSR)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 101) inode->i_mode |= S_IXUSR;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 102) if (inode->i_mode & S_IRGRP)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 103) inode->i_mode |= S_IXGRP;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 104) if (inode->i_mode & S_IROTH)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 105) inode->i_mode |= S_IXOTH;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 106) inode->i_mode |= S_IFDIR;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 107) } else
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 108) inode->i_mode = S_IRUGO | S_IXUGO | S_IWUSR | S_IFDIR;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 109) /* Maybe it should be controlled by mount parameter? */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 110) //inode->i_mode |= S_ISVTX;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 111) inode->i_op = &affs_dir_inode_operations;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 112) inode->i_fop = &affs_dir_operations;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 113) break;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 114) case ST_LINKDIR:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 115) #if 0
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 116) affs_warning(sb, "read_inode", "inode is LINKDIR");
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 117) goto bad_inode;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 118) #else
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 119) inode->i_mode |= S_IFDIR;
c765d47903780 (Al Viro 2008-12-04 09:50:55 -0500 120) /* ... and leave ->i_op and ->i_fop pointing to empty */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 121) break;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 122) #endif
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 123) case ST_LINKFILE:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 124) affs_warning(sb, "read_inode", "inode is LINKFILE");
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 125) goto bad_inode;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 126) case ST_FILE:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 127) size = be32_to_cpu(tail->size);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 128) inode->i_mode |= S_IFREG;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 129) AFFS_I(inode)->mmu_private = inode->i_size = size;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 130) if (inode->i_size) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 131) AFFS_I(inode)->i_blkcnt = (size - 1) /
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 132) sbi->s_data_blksize + 1;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 133) AFFS_I(inode)->i_extcnt = (AFFS_I(inode)->i_blkcnt - 1) /
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 134) sbi->s_hashsize + 1;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 135) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 136) if (tail->link_chain)
bfe8684869601 (Miklos Szeredi 2011-10-28 14:13:29 +0200 137) set_nlink(inode, 2);
79bda4d510f80 (Fabian Frederick 2015-04-16 12:48:24 -0700 138) inode->i_mapping->a_ops = affs_test_opt(sbi->s_flags, SF_OFS) ?
a0016ff2867ad (Fabian Frederick 2015-04-16 12:48:15 -0700 139) &affs_aops_ofs : &affs_aops;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 140) inode->i_op = &affs_file_inode_operations;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 141) inode->i_fop = &affs_file_operations;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 142) break;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 143) case ST_SOFTLINK:
f1bf90724de65 (Fabian Frederick 2017-04-15 08:54:36 +0200 144) inode->i_size = strlen((char *)AFFS_HEAD(bh)->table);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 145) inode->i_mode |= S_IFLNK;
21fc61c73c390 (Al Viro 2015-11-17 01:07:57 -0500 146) inode_nohighmem(inode);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 147) inode->i_op = &affs_symlink_inode_operations;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 148) inode->i_data.a_ops = &affs_symlink_aops;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 149) break;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 150) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 151)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 152) inode->i_mtime.tv_sec = inode->i_atime.tv_sec = inode->i_ctime.tv_sec
487b25bc4be9c (Deepa Dinamani 2019-03-21 14:05:12 -0700 153) = (be32_to_cpu(tail->change.days) * 86400LL +
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 154) be32_to_cpu(tail->change.mins) * 60 +
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 155) be32_to_cpu(tail->change.ticks) / 50 +
487b25bc4be9c (Deepa Dinamani 2019-03-21 14:05:12 -0700 156) AFFS_EPOCH_DELTA) +
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 157) sys_tz.tz_minuteswest * 60;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 158) inode->i_mtime.tv_nsec = inode->i_ctime.tv_nsec = inode->i_atime.tv_nsec = 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 159) affs_brelse(bh);
210f855963ba5 (David Howells 2008-02-07 00:15:29 -0800 160) unlock_new_inode(inode);
210f855963ba5 (David Howells 2008-02-07 00:15:29 -0800 161) return inode;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 162)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 163) bad_inode:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 164) affs_brelse(bh);
210f855963ba5 (David Howells 2008-02-07 00:15:29 -0800 165) iget_failed(inode);
210f855963ba5 (David Howells 2008-02-07 00:15:29 -0800 166) return ERR_PTR(-EIO);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 167) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 168)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 169) int
a9185b41a4f84 (Christoph Hellwig 2010-03-05 09:21:37 +0100 170) affs_write_inode(struct inode *inode, struct writeback_control *wbc)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 171) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 172) struct super_block *sb = inode->i_sb;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 173) struct buffer_head *bh;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 174) struct affs_tail *tail;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 175) uid_t uid;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 176) gid_t gid;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 177)
9606d9aa858ae (Fabian Frederick 2014-06-06 14:37:25 -0700 178) pr_debug("write_inode(%lu)\n", inode->i_ino);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 179)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 180) if (!inode->i_nlink)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 181) // possibly free block
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 182) return 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 183) bh = affs_bread(sb, inode->i_ino);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 184) if (!bh) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 185) affs_error(sb,"write_inode","Cannot read block %lu",inode->i_ino);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 186) return -EIO;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 187) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 188) tail = AFFS_TAIL(sb, bh);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 189) if (tail->stype == cpu_to_be32(ST_ROOT)) {
c1618208511f0 (Fabian Frederick 2017-02-27 14:27:54 -0800 190) affs_secs_to_datestamp(inode->i_mtime.tv_sec,
c1618208511f0 (Fabian Frederick 2017-02-27 14:27:54 -0800 191) &AFFS_ROOT_TAIL(sb, bh)->root_change);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 192) } else {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 193) tail->protect = cpu_to_be32(AFFS_I(inode)->i_protect);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 194) tail->size = cpu_to_be32(inode->i_size);
c1618208511f0 (Fabian Frederick 2017-02-27 14:27:54 -0800 195) affs_secs_to_datestamp(inode->i_mtime.tv_sec, &tail->change);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 196) if (!(inode->i_ino == AFFS_SB(sb)->s_root_block)) {
8fed10be0029a (Eric W. Biederman 2012-02-07 16:20:16 -0800 197) uid = i_uid_read(inode);
8fed10be0029a (Eric W. Biederman 2012-02-07 16:20:16 -0800 198) gid = i_gid_read(inode);
79bda4d510f80 (Fabian Frederick 2015-04-16 12:48:24 -0700 199) if (affs_test_opt(AFFS_SB(sb)->s_flags, SF_MUFS)) {
8fed10be0029a (Eric W. Biederman 2012-02-07 16:20:16 -0800 200) if (uid == 0 || uid == 0xFFFF)
8fed10be0029a (Eric W. Biederman 2012-02-07 16:20:16 -0800 201) uid = uid ^ ~0;
8fed10be0029a (Eric W. Biederman 2012-02-07 16:20:16 -0800 202) if (gid == 0 || gid == 0xFFFF)
8fed10be0029a (Eric W. Biederman 2012-02-07 16:20:16 -0800 203) gid = gid ^ ~0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 204) }
79bda4d510f80 (Fabian Frederick 2015-04-16 12:48:24 -0700 205) if (!affs_test_opt(AFFS_SB(sb)->s_flags, SF_SETUID))
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 206) tail->uid = cpu_to_be16(uid);
79bda4d510f80 (Fabian Frederick 2015-04-16 12:48:24 -0700 207) if (!affs_test_opt(AFFS_SB(sb)->s_flags, SF_SETGID))
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 208) tail->gid = cpu_to_be16(gid);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 209) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 210) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 211) affs_fix_checksum(sb, bh);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 212) mark_buffer_dirty_inode(bh, inode);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 213) affs_brelse(bh);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 214) affs_free_prealloc(inode);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 215) return 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 216) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 217)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 218) int
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 219) affs_notify_change(struct user_namespace *mnt_userns, struct dentry *dentry,
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 220) struct iattr *attr)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 221) {
2b0143b5c986b (David Howells 2015-03-17 22:25:59 +0000 222) struct inode *inode = d_inode(dentry);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 223) int error;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 224)
9606d9aa858ae (Fabian Frederick 2014-06-06 14:37:25 -0700 225) pr_debug("notify_change(%lu,0x%x)\n", inode->i_ino, attr->ia_valid);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 226)
2f221d6f7b881 (Christian Brauner 2021-01-21 14:19:26 +0100 227) error = setattr_prepare(&init_user_ns, dentry, attr);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 228) if (error)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 229) goto out;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 230)
a0016ff2867ad (Fabian Frederick 2015-04-16 12:48:15 -0700 231) if (((attr->ia_valid & ATTR_UID) &&
79bda4d510f80 (Fabian Frederick 2015-04-16 12:48:24 -0700 232) affs_test_opt(AFFS_SB(inode->i_sb)->s_flags, SF_SETUID)) ||
a0016ff2867ad (Fabian Frederick 2015-04-16 12:48:15 -0700 233) ((attr->ia_valid & ATTR_GID) &&
79bda4d510f80 (Fabian Frederick 2015-04-16 12:48:24 -0700 234) affs_test_opt(AFFS_SB(inode->i_sb)->s_flags, SF_SETGID)) ||
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 235) ((attr->ia_valid & ATTR_MODE) &&
a0016ff2867ad (Fabian Frederick 2015-04-16 12:48:15 -0700 236) (AFFS_SB(inode->i_sb)->s_flags &
a0016ff2867ad (Fabian Frederick 2015-04-16 12:48:15 -0700 237) (AFFS_MOUNT_SF_SETMODE | AFFS_MOUNT_SF_IMMUTABLE)))) {
79bda4d510f80 (Fabian Frederick 2015-04-16 12:48:24 -0700 238) if (!affs_test_opt(AFFS_SB(inode->i_sb)->s_flags, SF_QUIET))
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 239) error = -EPERM;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 240) goto out;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 241) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 242)
1025774ce411f (Christoph Hellwig 2010-06-04 11:30:02 +0200 243) if ((attr->ia_valid & ATTR_SIZE) &&
1025774ce411f (Christoph Hellwig 2010-06-04 11:30:02 +0200 244) attr->ia_size != i_size_read(inode)) {
1dc1834f42926 (Marco Stornelli 2012-12-15 11:51:53 +0100 245) error = inode_newsize_ok(inode, attr->ia_size);
1025774ce411f (Christoph Hellwig 2010-06-04 11:30:02 +0200 246) if (error)
1025774ce411f (Christoph Hellwig 2010-06-04 11:30:02 +0200 247) return error;
1dc1834f42926 (Marco Stornelli 2012-12-15 11:51:53 +0100 248)
1dc1834f42926 (Marco Stornelli 2012-12-15 11:51:53 +0100 249) truncate_setsize(inode, attr->ia_size);
1dc1834f42926 (Marco Stornelli 2012-12-15 11:51:53 +0100 250) affs_truncate(inode);
1025774ce411f (Christoph Hellwig 2010-06-04 11:30:02 +0200 251) }
1025774ce411f (Christoph Hellwig 2010-06-04 11:30:02 +0200 252)
2f221d6f7b881 (Christian Brauner 2021-01-21 14:19:26 +0100 253) setattr_copy(&init_user_ns, inode, attr);
1025774ce411f (Christoph Hellwig 2010-06-04 11:30:02 +0200 254) mark_inode_dirty(inode);
1025774ce411f (Christoph Hellwig 2010-06-04 11:30:02 +0200 255)
1025774ce411f (Christoph Hellwig 2010-06-04 11:30:02 +0200 256) if (attr->ia_valid & ATTR_MODE)
c1618208511f0 (Fabian Frederick 2017-02-27 14:27:54 -0800 257) affs_mode_to_prot(inode);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 258) out:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 259) return error;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 260) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 261)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 262) void
f053ddde75750 (Al Viro 2010-06-06 10:16:41 -0400 263) affs_evict_inode(struct inode *inode)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 264) {
dca3c33652e43 (Roman Zippel 2008-04-29 17:02:20 +0200 265) unsigned long cache_page;
9606d9aa858ae (Fabian Frederick 2014-06-06 14:37:25 -0700 266) pr_debug("evict_inode(ino=%lu, nlink=%u)\n",
9606d9aa858ae (Fabian Frederick 2014-06-06 14:37:25 -0700 267) inode->i_ino, inode->i_nlink);
91b0abe36a7b2 (Johannes Weiner 2014-04-03 14:47:49 -0700 268) truncate_inode_pages_final(&inode->i_data);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 269)
f053ddde75750 (Al Viro 2010-06-06 10:16:41 -0400 270) if (!inode->i_nlink) {
f053ddde75750 (Al Viro 2010-06-06 10:16:41 -0400 271) inode->i_size = 0;
f053ddde75750 (Al Viro 2010-06-06 10:16:41 -0400 272) affs_truncate(inode);
f053ddde75750 (Al Viro 2010-06-06 10:16:41 -0400 273) }
dca3c33652e43 (Roman Zippel 2008-04-29 17:02:20 +0200 274)
f053ddde75750 (Al Viro 2010-06-06 10:16:41 -0400 275) invalidate_inode_buffers(inode);
dbd5768f87ff6 (Jan Kara 2012-05-03 14:48:02 +0200 276) clear_inode(inode);
dca3c33652e43 (Roman Zippel 2008-04-29 17:02:20 +0200 277) affs_free_prealloc(inode);
dca3c33652e43 (Roman Zippel 2008-04-29 17:02:20 +0200 278) cache_page = (unsigned long)AFFS_I(inode)->i_lc;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 279) if (cache_page) {
9606d9aa858ae (Fabian Frederick 2014-06-06 14:37:25 -0700 280) pr_debug("freeing ext cache\n");
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 281) AFFS_I(inode)->i_lc = NULL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 282) AFFS_I(inode)->i_ac = NULL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 283) free_page(cache_page);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 284) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 285) affs_brelse(AFFS_I(inode)->i_ext_bh);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 286) AFFS_I(inode)->i_ext_last = ~1;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 287) AFFS_I(inode)->i_ext_bh = NULL;
f053ddde75750 (Al Viro 2010-06-06 10:16:41 -0400 288)
f053ddde75750 (Al Viro 2010-06-06 10:16:41 -0400 289) if (!inode->i_nlink)
f053ddde75750 (Al Viro 2010-06-06 10:16:41 -0400 290) affs_free_block(inode->i_sb, inode->i_ino);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 291) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 292)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 293) struct inode *
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 294) affs_new_inode(struct inode *dir)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 295) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 296) struct super_block *sb = dir->i_sb;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 297) struct inode *inode;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 298) u32 block;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 299) struct buffer_head *bh;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 300)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 301) if (!(inode = new_inode(sb)))
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 302) goto err_inode;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 303)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 304) if (!(block = affs_alloc_block(dir, dir->i_ino)))
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 305) goto err_block;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 306)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 307) bh = affs_getzeroblk(sb, block);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 308) if (!bh)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 309) goto err_bh;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 310) mark_buffer_dirty_inode(bh, inode);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 311) affs_brelse(bh);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 312)
215599815d897 (David Howells 2008-11-14 10:38:45 +1100 313) inode->i_uid = current_fsuid();
215599815d897 (David Howells 2008-11-14 10:38:45 +1100 314) inode->i_gid = current_fsgid();
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 315) inode->i_ino = block;
bfe8684869601 (Miklos Szeredi 2011-10-28 14:13:29 +0200 316) set_nlink(inode, 1);
02027d42c3f74 (Deepa Dinamani 2016-09-14 07:48:05 -0700 317) inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
dca3c33652e43 (Roman Zippel 2008-04-29 17:02:20 +0200 318) atomic_set(&AFFS_I(inode)->i_opencnt, 0);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 319) AFFS_I(inode)->i_blkcnt = 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 320) AFFS_I(inode)->i_lc = NULL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 321) AFFS_I(inode)->i_lc_size = 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 322) AFFS_I(inode)->i_lc_shift = 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 323) AFFS_I(inode)->i_lc_mask = 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 324) AFFS_I(inode)->i_ac = NULL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 325) AFFS_I(inode)->i_ext_bh = NULL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 326) AFFS_I(inode)->mmu_private = 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 327) AFFS_I(inode)->i_protect = 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 328) AFFS_I(inode)->i_lastalloc = 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 329) AFFS_I(inode)->i_pa_cnt = 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 330) AFFS_I(inode)->i_extcnt = 1;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 331) AFFS_I(inode)->i_ext_last = ~1;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 332)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 333) insert_inode_hash(inode);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 334)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 335) return inode;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 336)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 337) err_bh:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 338) affs_free_block(sb, block);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 339) err_block:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 340) iput(inode);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 341) err_inode:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 342) return NULL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 343) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 344)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 345) /*
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 346) * Add an entry to a directory. Create the header block
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 347) * and insert it into the hash table.
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 348) */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 349)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 350) int
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 351) affs_add_entry(struct inode *dir, struct inode *inode, struct dentry *dentry, s32 type)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 352) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 353) struct super_block *sb = dir->i_sb;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 354) struct buffer_head *inode_bh = NULL;
78f444f6736ed (Fabian Frederick 2015-06-30 14:57:55 -0700 355) struct buffer_head *bh;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 356) u32 block = 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 357) int retval;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 358)
08fe100d91bc0 (Geert Uytterhoeven 2015-02-17 13:46:10 -0800 359) pr_debug("%s(dir=%lu, inode=%lu, \"%pd\", type=%d)\n", __func__,
08fe100d91bc0 (Geert Uytterhoeven 2015-02-17 13:46:10 -0800 360) dir->i_ino, inode->i_ino, dentry, type);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 361)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 362) retval = -EIO;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 363) bh = affs_bread(sb, inode->i_ino);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 364) if (!bh)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 365) goto done;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 366)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 367) affs_lock_link(inode);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 368) switch (type) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 369) case ST_LINKFILE:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 370) case ST_LINKDIR:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 371) retval = -ENOSPC;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 372) block = affs_alloc_block(dir, dir->i_ino);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 373) if (!block)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 374) goto err;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 375) retval = -EIO;
dca3c33652e43 (Roman Zippel 2008-04-29 17:02:20 +0200 376) inode_bh = bh;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 377) bh = affs_getzeroblk(sb, block);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 378) if (!bh)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 379) goto err;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 380) break;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 381) default:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 382) break;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 383) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 384)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 385) AFFS_HEAD(bh)->ptype = cpu_to_be32(T_SHORT);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 386) AFFS_HEAD(bh)->key = cpu_to_be32(bh->b_blocknr);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 387) affs_copy_name(AFFS_TAIL(sb, bh)->name, dentry);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 388) AFFS_TAIL(sb, bh)->stype = cpu_to_be32(type);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 389) AFFS_TAIL(sb, bh)->parent = cpu_to_be32(dir->i_ino);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 390)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 391) if (inode_bh) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 392) __be32 chain;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 393) chain = AFFS_TAIL(sb, inode_bh)->link_chain;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 394) AFFS_TAIL(sb, bh)->original = cpu_to_be32(inode->i_ino);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 395) AFFS_TAIL(sb, bh)->link_chain = chain;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 396) AFFS_TAIL(sb, inode_bh)->link_chain = cpu_to_be32(block);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 397) affs_adjust_checksum(inode_bh, block - be32_to_cpu(chain));
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 398) mark_buffer_dirty_inode(inode_bh, inode);
bfe8684869601 (Miklos Szeredi 2011-10-28 14:13:29 +0200 399) set_nlink(inode, 2);
7de9c6ee3ecff (Al Viro 2010-10-23 11:11:40 -0400 400) ihold(inode);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 401) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 402) affs_fix_checksum(sb, bh);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 403) mark_buffer_dirty_inode(bh, inode);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 404) dentry->d_fsdata = (void *)(long)bh->b_blocknr;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 405)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 406) affs_lock_dir(dir);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 407) retval = affs_insert_hash(dir, bh);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 408) mark_buffer_dirty_inode(bh, inode);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 409) affs_unlock_dir(dir);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 410) affs_unlock_link(inode);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 411)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 412) d_instantiate(dentry, inode);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 413) done:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 414) affs_brelse(inode_bh);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 415) affs_brelse(bh);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 416) return retval;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 417) err:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 418) if (block)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 419) affs_free_block(sb, block);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 420) affs_unlock_link(inode);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 421) goto done;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 422) }
VisionFive2 Linux kernel
StarFive Tech Linux Kernel for VisionFive (JH7110) boards (mirror)
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