1 /*
2 * quota.c --- code for handling ext4 quota inodes
3 *
4 */
5
6 #ifdef HAVE_SYS_MOUNT_H
7 #include <sys/param.h>
8 #include <sys/mount.h>
9 #define MNT_FL (MS_MGC_VAL | MS_RDONLY)
10 #endif
11 #ifdef HAVE_SYS_STAT_H
12 #include <sys/stat.h>
13 #endif
14
15 #include "e2fsck.h"
16 #include "problem.h"
17 #include "quota/mkquota.h"
18 #include "quota/quotaio.h"
19
move_quota_inode(ext2_filsys fs,ext2_ino_t from_ino,ext2_ino_t to_ino,int qtype)20 static void move_quota_inode(ext2_filsys fs, ext2_ino_t from_ino,
21 ext2_ino_t to_ino, int qtype)
22 {
23 struct ext2_inode inode;
24 char qf_name[QUOTA_NAME_LEN];
25
26 /* We need the inode bitmap to be loaded */
27 if (ext2fs_read_bitmaps(fs))
28 return;
29
30 if (ext2fs_read_inode(fs, from_ino, &inode))
31 return;
32
33 inode.i_links_count = 1;
34 inode.i_mode = LINUX_S_IFREG | 0600;
35 inode.i_flags = EXT2_IMMUTABLE_FL;
36 if (fs->super->s_feature_incompat &
37 EXT3_FEATURE_INCOMPAT_EXTENTS)
38 inode.i_flags |= EXT4_EXTENTS_FL;
39
40 ext2fs_write_new_inode(fs, to_ino, &inode);
41 /* unlink the old inode */
42 quota_get_qf_name(qtype, QFMT_VFS_V1, qf_name);
43 ext2fs_unlink(fs, EXT2_ROOT_INO, qf_name, from_ino, 0);
44 ext2fs_inode_alloc_stats(fs, from_ino, -1);
45 /* Clear out the original inode in the inode-table block. */
46 memset(&inode, 0, sizeof(struct ext2_inode));
47 ext2fs_write_inode(fs, from_ino, &inode);
48 }
49
e2fsck_hide_quota(e2fsck_t ctx)50 void e2fsck_hide_quota(e2fsck_t ctx)
51 {
52 struct ext2_super_block *sb = ctx->fs->super;
53 struct problem_context pctx;
54 ext2_filsys fs = ctx->fs;
55
56 clear_problem_context(&pctx);
57
58 if ((ctx->options & E2F_OPT_READONLY) ||
59 !(sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_QUOTA))
60 return;
61
62 pctx.ino = sb->s_usr_quota_inum;
63 if (sb->s_usr_quota_inum &&
64 (sb->s_usr_quota_inum != EXT4_USR_QUOTA_INO) &&
65 fix_problem(ctx, PR_0_HIDE_QUOTA, &pctx)) {
66 move_quota_inode(fs, sb->s_usr_quota_inum, EXT4_USR_QUOTA_INO,
67 USRQUOTA);
68 sb->s_usr_quota_inum = EXT4_USR_QUOTA_INO;
69 }
70
71 pctx.ino = sb->s_grp_quota_inum;
72 if (sb->s_grp_quota_inum &&
73 (sb->s_grp_quota_inum != EXT4_GRP_QUOTA_INO) &&
74 fix_problem(ctx, PR_0_HIDE_QUOTA, &pctx)) {
75 move_quota_inode(fs, sb->s_grp_quota_inum, EXT4_GRP_QUOTA_INO,
76 GRPQUOTA);
77 sb->s_grp_quota_inum = EXT4_GRP_QUOTA_INO;
78 }
79
80 return;
81 }
82