1 /*
2 * quota.c --- code for handling ext4 quota inodes
3 *
4 */
5
6 #include "config.h"
7 #ifdef HAVE_SYS_MOUNT_H
8 #include <sys/param.h>
9 #include <sys/mount.h>
10 #define MNT_FL (MS_MGC_VAL | MS_RDONLY)
11 #endif
12 #ifdef HAVE_SYS_STAT_H
13 #include <sys/stat.h>
14 #endif
15
16 #include "e2fsck.h"
17 #include "problem.h"
18
move_quota_inode(ext2_filsys fs,ext2_ino_t from_ino,ext2_ino_t to_ino,enum quota_type qtype)19 static void move_quota_inode(ext2_filsys fs, ext2_ino_t from_ino,
20 ext2_ino_t to_ino, enum quota_type qtype)
21 {
22 struct ext2_inode inode;
23 errcode_t retval;
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 retval = ext2fs_read_inode(fs, from_ino, &inode);
31 if (retval) {
32 com_err("ext2fs_read_inode", retval, "%s",
33 _("in move_quota_inode"));
34 return;
35 }
36
37 inode.i_links_count = 1;
38 inode.i_mode = LINUX_S_IFREG | 0600;
39 inode.i_flags = EXT2_IMMUTABLE_FL;
40 if (ext2fs_has_feature_extents(fs->super))
41 inode.i_flags |= EXT4_EXTENTS_FL;
42
43 retval = ext2fs_write_new_inode(fs, to_ino, &inode);
44 if (retval) {
45 com_err("ext2fs_write_new_inode", retval, "%s",
46 _("in move_quota_inode"));
47 return;
48 }
49
50 /* unlink the old inode */
51 quota_get_qf_name(qtype, QFMT_VFS_V1, qf_name);
52 ext2fs_unlink(fs, EXT2_ROOT_INO, qf_name, from_ino, 0);
53 ext2fs_inode_alloc_stats(fs, from_ino, -1);
54 /* Clear out the original inode in the inode-table block. */
55 memset(&inode, 0, sizeof(struct ext2_inode));
56 ext2fs_write_inode(fs, from_ino, &inode);
57 }
58
e2fsck_hide_quota(e2fsck_t ctx)59 void e2fsck_hide_quota(e2fsck_t ctx)
60 {
61 struct ext2_super_block *sb = ctx->fs->super;
62 struct problem_context pctx;
63 ext2_filsys fs = ctx->fs;
64 enum quota_type qtype;
65 ext2_ino_t quota_ino;
66
67 clear_problem_context(&pctx);
68
69 if ((ctx->options & E2F_OPT_READONLY) ||
70 !ext2fs_has_feature_quota(sb))
71 return;
72
73 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
74 pctx.ino = *quota_sb_inump(sb, qtype);
75 quota_ino = quota_type2inum(qtype, fs->super);
76 if (pctx.ino && (pctx.ino != quota_ino) &&
77 fix_problem(ctx, PR_0_HIDE_QUOTA, &pctx)) {
78 move_quota_inode(fs, pctx.ino, quota_ino, qtype);
79 *quota_sb_inump(sb, qtype) = quota_ino;
80 }
81 }
82
83 return;
84 }
85