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959ef981 | 1 | // SPDX-License-Identifier: GPL-2.0 |
2bd0ea18 | 2 | /* |
da23017d NS |
3 | * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc. |
4 | * All Rights Reserved. | |
2bd0ea18 NS |
5 | */ |
6 | ||
6b803e5a | 7 | #include "libxfs.h" |
2bd0ea18 | 8 | |
2bd0ea18 NS |
9 | #include "err_protos.h" |
10 | #include "globals.h" | |
a5e09451 ES |
11 | #include "versions.h" |
12 | ||
13 | /* | |
14 | * filesystem feature global vars, set to 1 if the feature | |
15 | * is on, 0 otherwise | |
16 | */ | |
17 | ||
18 | int fs_attributes; | |
19 | int fs_attributes2; | |
20 | int fs_inode_nlink; | |
21 | int fs_quotas; | |
22 | int fs_aligned_inodes; | |
23 | int fs_sb_feature_bits; | |
24 | int fs_has_extflgbit; | |
25 | ||
26 | /* | |
27 | * inode chunk alignment, fsblocks | |
28 | */ | |
29 | ||
30 | xfs_extlen_t fs_ino_alignment; | |
2bd0ea18 NS |
31 | |
32 | void | |
33 | update_sb_version(xfs_mount_t *mp) | |
34 | { | |
35 | xfs_sb_t *sb; | |
2bd0ea18 NS |
36 | |
37 | sb = &mp->m_sb; | |
38 | ||
497d0706 | 39 | if (fs_attributes && !xfs_sb_version_hasattr(sb)) |
5e656dbb | 40 | xfs_sb_version_addattr(sb); |
2bd0ea18 | 41 | |
232470f2 | 42 | if (fs_attributes2 && !xfs_sb_version_hasattr2(sb)) |
5e656dbb | 43 | xfs_sb_version_addattr2(sb); |
9b1d68ec | 44 | |
5f6f3660 DC |
45 | /* V2 inode conversion is now always going to happen */ |
46 | if (!(sb->sb_versionnum & XFS_SB_VERSION_NLINKBIT)) | |
47 | sb->sb_versionnum |= XFS_SB_VERSION_NLINKBIT; | |
2bd0ea18 NS |
48 | |
49 | /* | |
50 | * fix up the superblock version number and feature bits, | |
51 | * turn off quota bits and flags if the filesystem doesn't | |
52 | * have quotas. | |
53 | */ | |
54 | if (fs_quotas) { | |
99a1e0da | 55 | if (!xfs_sb_version_hasquota(sb)) |
5e656dbb | 56 | xfs_sb_version_addquota(sb); |
2bd0ea18 NS |
57 | |
58 | /* | |
59 | * protect against stray bits in the quota flag field | |
60 | */ | |
342aef1e | 61 | if (sb->sb_qflags & ~XFS_MOUNT_QUOTA_ALL) { |
2bd0ea18 NS |
62 | /* |
63 | * update the incore superblock, if we're in | |
64 | * no_modify mode, it'll never get flushed out | |
65 | * so this is ok. | |
66 | */ | |
507f4e33 | 67 | do_warn(_("bogus quota flags 0x%x set in superblock"), |
342aef1e CS |
68 | sb->sb_qflags & ~XFS_MOUNT_QUOTA_ALL); |
69 | ||
70 | sb->sb_qflags &= XFS_MOUNT_QUOTA_ALL; | |
2bd0ea18 NS |
71 | |
72 | if (!no_modify) | |
507f4e33 | 73 | do_warn(_(", bogus flags will be cleared\n")); |
2bd0ea18 | 74 | else |
507f4e33 | 75 | do_warn(_(", bogus flags would be cleared\n")); |
2bd0ea18 NS |
76 | } |
77 | } else { | |
78 | sb->sb_qflags = 0; | |
79 | ||
5e656dbb | 80 | if (xfs_sb_version_hasquota(sb)) { |
2bd0ea18 | 81 | lost_quotas = 1; |
5f6f3660 | 82 | sb->sb_versionnum &= ~XFS_SB_VERSION_QUOTABIT; |
2bd0ea18 NS |
83 | } |
84 | } | |
85 | ||
f8149110 | 86 | if (!fs_aligned_inodes && xfs_sb_version_hasalign(sb)) |
5e656dbb | 87 | sb->sb_versionnum &= ~XFS_SB_VERSION_ALIGNBIT; |
2bd0ea18 NS |
88 | } |
89 | ||
90 | /* | |
91 | * returns 0 if things are fine, 1 if we don't understand | |
92 | * this superblock version. Sets superblock geometry-dependent | |
93 | * global variables. | |
94 | */ | |
95 | int | |
96 | parse_sb_version(xfs_sb_t *sb) | |
97 | { | |
2bd0ea18 | 98 | fs_attributes = 0; |
9b1d68ec | 99 | fs_attributes2 = 0; |
5f6f3660 | 100 | fs_inode_nlink = 1; |
2bd0ea18 NS |
101 | fs_quotas = 0; |
102 | fs_aligned_inodes = 0; | |
103 | fs_sb_feature_bits = 0; | |
104 | fs_ino_alignment = 0; | |
b7fdeb4d | 105 | fs_has_extflgbit = 1; |
2bd0ea18 | 106 | have_uquotino = 0; |
b36eef04 | 107 | have_gquotino = 0; |
0340d706 | 108 | have_pquotino = 0; |
2bd0ea18 | 109 | |
5f6f3660 DC |
110 | if (sb->sb_versionnum & XFS_SB_VERSION_SHAREDBIT) { |
111 | do_warn(_("Shared Version bit set. Not supported. Ever.\n")); | |
ff105f75 DC |
112 | return 1; |
113 | } | |
114 | ||
2bd0ea18 NS |
115 | /* |
116 | * ok, check to make sure that the sb isn't newer | |
117 | * than we are | |
118 | */ | |
5e656dbb | 119 | if (!xfs_sb_good_version(sb)) { |
507f4e33 NS |
120 | do_warn(_("WARNING: unknown superblock version %d\n"), |
121 | XFS_SB_VERSION_NUM(sb)); | |
2bd0ea18 | 122 | do_warn( |
507f4e33 | 123 | _("This filesystem contains features not understood by this program.\n")); |
2bd0ea18 NS |
124 | return(1); |
125 | } | |
126 | ||
644589b1 ES |
127 | if (XFS_SB_VERSION_NUM(sb) >= XFS_SB_VERSION_4) |
128 | fs_sb_feature_bits = 1; | |
2bd0ea18 | 129 | |
a98b22b6 DW |
130 | /* Look for V5 feature flags we don't know about */ |
131 | if (XFS_SB_VERSION_NUM(sb) >= XFS_SB_VERSION_5 && | |
132 | (xfs_sb_has_compat_feature(sb, XFS_SB_FEAT_COMPAT_UNKNOWN) || | |
133 | xfs_sb_has_ro_compat_feature(sb, XFS_SB_FEAT_RO_COMPAT_UNKNOWN) || | |
134 | xfs_sb_has_incompat_feature(sb, XFS_SB_FEAT_INCOMPAT_UNKNOWN))) { | |
135 | do_warn( | |
136 | _("Superblock has unknown compat/rocompat/incompat features (0x%x/0x%x/0x%x).\n" | |
137 | "Using a more recent xfs_repair is recommended.\n"), | |
138 | sb->sb_features_compat & XFS_SB_FEAT_COMPAT_UNKNOWN, | |
139 | sb->sb_features_ro_compat & XFS_SB_FEAT_RO_COMPAT_UNKNOWN, | |
140 | sb->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_UNKNOWN); | |
141 | return 1; | |
142 | } | |
143 | ||
497d0706 ES |
144 | if (xfs_sb_version_hasattr(sb)) |
145 | fs_attributes = 1; | |
2bd0ea18 | 146 | |
232470f2 ES |
147 | if (xfs_sb_version_hasattr2(sb)) |
148 | fs_attributes2 = 1; | |
9b1d68ec | 149 | |
5f6f3660 | 150 | if (!(sb->sb_versionnum & XFS_SB_VERSION_NLINKBIT)) { |
add8ff67 ES |
151 | if (!no_modify) { |
152 | do_warn( | |
153 | _("WARNING: you have a V1 inode filesystem. It will be converted to a\n" | |
5f6f3660 | 154 | "\tversion 2 inode filesystem. If you do not want this, run an older\n" |
add8ff67 ES |
155 | "\tversion of xfs_repair.\n")); |
156 | } else { | |
157 | do_warn( | |
158 | _("WARNING: you have a V1 inode filesystem. It would be converted to a\n" | |
159 | "\tversion 2 inode filesystem. If you do not want this, run an older\n" | |
160 | "\tversion of xfs_repair.\n")); | |
161 | } | |
2bd0ea18 NS |
162 | } |
163 | ||
5e656dbb | 164 | if (xfs_sb_version_hasquota(sb)) { |
99a1e0da | 165 | fs_quotas = 1; |
2bd0ea18 | 166 | |
99a1e0da ES |
167 | if (sb->sb_uquotino != 0 && sb->sb_uquotino != NULLFSINO) |
168 | have_uquotino = 1; | |
2bd0ea18 | 169 | |
99a1e0da ES |
170 | if (sb->sb_gquotino != 0 && sb->sb_gquotino != NULLFSINO) |
171 | have_gquotino = 1; | |
0340d706 | 172 | |
99a1e0da ES |
173 | if (sb->sb_pquotino != 0 && sb->sb_pquotino != NULLFSINO) |
174 | have_pquotino = 1; | |
2bd0ea18 NS |
175 | } |
176 | ||
5e656dbb | 177 | if (xfs_sb_version_hasalign(sb)) { |
dd17791c ES |
178 | fs_aligned_inodes = 1; |
179 | fs_ino_alignment = sb->sb_inoalignmt; | |
2bd0ea18 NS |
180 | } |
181 | ||
182 | /* | |
183 | * calculate maximum file offset for this geometry | |
184 | */ | |
185 | fs_max_file_offset = 0x7fffffffffffffffLL >> sb->sb_blocklog; | |
186 | ||
187 | return(0); | |
188 | } |