Commit | Line | Data |
---|---|---|
ca4d147e HP |
1 | /* |
2 | * linux/fs/ocfs2/ioctl.c | |
3 | * | |
4 | * Copyright (C) 2006 Herbert Poetzl | |
5 | * adapted from Remy Card's ext2/ioctl.c | |
6 | */ | |
7 | ||
8 | #include <linux/fs.h> | |
9 | #include <linux/mount.h> | |
6953b4c0 | 10 | #include <linux/smp_lock.h> |
ca4d147e HP |
11 | |
12 | #define MLOG_MASK_PREFIX ML_INODE | |
13 | #include <cluster/masklog.h> | |
14 | ||
15 | #include "ocfs2.h" | |
16 | #include "alloc.h" | |
17 | #include "dlmglue.h" | |
b2580103 | 18 | #include "file.h" |
ca4d147e HP |
19 | #include "inode.h" |
20 | #include "journal.h" | |
21 | ||
22 | #include "ocfs2_fs.h" | |
2d562518 | 23 | #include "ioctl.h" |
d659072f | 24 | #include "resize.h" |
2d562518 | 25 | |
ca4d147e HP |
26 | #include <linux/ext2_fs.h> |
27 | ||
28 | static int ocfs2_get_inode_attr(struct inode *inode, unsigned *flags) | |
29 | { | |
30 | int status; | |
31 | ||
e63aecb6 | 32 | status = ocfs2_inode_lock(inode, NULL, 0); |
ca4d147e HP |
33 | if (status < 0) { |
34 | mlog_errno(status); | |
35 | return status; | |
36 | } | |
6e4b0d56 | 37 | ocfs2_get_inode_flags(OCFS2_I(inode)); |
ca4d147e | 38 | *flags = OCFS2_I(inode)->ip_attr; |
e63aecb6 | 39 | ocfs2_inode_unlock(inode, 0); |
ca4d147e HP |
40 | |
41 | mlog_exit(status); | |
42 | return status; | |
43 | } | |
44 | ||
45 | static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags, | |
46 | unsigned mask) | |
47 | { | |
48 | struct ocfs2_inode_info *ocfs2_inode = OCFS2_I(inode); | |
49 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
1fabe148 | 50 | handle_t *handle = NULL; |
ca4d147e HP |
51 | struct buffer_head *bh = NULL; |
52 | unsigned oldflags; | |
53 | int status; | |
54 | ||
55 | mutex_lock(&inode->i_mutex); | |
56 | ||
e63aecb6 | 57 | status = ocfs2_inode_lock(inode, &bh, 1); |
ca4d147e HP |
58 | if (status < 0) { |
59 | mlog_errno(status); | |
60 | goto bail; | |
61 | } | |
62 | ||
ca4d147e | 63 | status = -EACCES; |
3bd858ab | 64 | if (!is_owner_or_cap(inode)) |
ca4d147e HP |
65 | goto bail_unlock; |
66 | ||
67 | if (!S_ISDIR(inode->i_mode)) | |
68 | flags &= ~OCFS2_DIRSYNC_FL; | |
69 | ||
65eff9cc | 70 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); |
ca4d147e HP |
71 | if (IS_ERR(handle)) { |
72 | status = PTR_ERR(handle); | |
73 | mlog_errno(status); | |
74 | goto bail_unlock; | |
75 | } | |
76 | ||
77 | oldflags = ocfs2_inode->ip_attr; | |
78 | flags = flags & mask; | |
79 | flags |= oldflags & ~mask; | |
80 | ||
81 | /* | |
82 | * The IMMUTABLE and APPEND_ONLY flags can only be changed by | |
83 | * the relevant capability. | |
84 | */ | |
85 | status = -EPERM; | |
86 | if ((oldflags & OCFS2_IMMUTABLE_FL) || ((flags ^ oldflags) & | |
87 | (OCFS2_APPEND_FL | OCFS2_IMMUTABLE_FL))) { | |
88 | if (!capable(CAP_LINUX_IMMUTABLE)) | |
89 | goto bail_unlock; | |
90 | } | |
91 | ||
92 | ocfs2_inode->ip_attr = flags; | |
93 | ocfs2_set_inode_flags(inode); | |
94 | ||
95 | status = ocfs2_mark_inode_dirty(handle, inode, bh); | |
96 | if (status < 0) | |
97 | mlog_errno(status); | |
98 | ||
02dc1af4 | 99 | ocfs2_commit_trans(osb, handle); |
ca4d147e | 100 | bail_unlock: |
e63aecb6 | 101 | ocfs2_inode_unlock(inode, 1); |
ca4d147e HP |
102 | bail: |
103 | mutex_unlock(&inode->i_mutex); | |
104 | ||
a81cb88b | 105 | brelse(bh); |
ca4d147e HP |
106 | |
107 | mlog_exit(status); | |
108 | return status; | |
109 | } | |
110 | ||
c9ec1488 | 111 | long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
ca4d147e | 112 | { |
c9ec1488 | 113 | struct inode *inode = filp->f_path.dentry->d_inode; |
ca4d147e | 114 | unsigned int flags; |
d659072f | 115 | int new_clusters; |
ca4d147e | 116 | int status; |
b2580103 | 117 | struct ocfs2_space_resv sr; |
7909f2bf | 118 | struct ocfs2_new_group_input input; |
ca4d147e HP |
119 | |
120 | switch (cmd) { | |
121 | case OCFS2_IOC_GETFLAGS: | |
122 | status = ocfs2_get_inode_attr(inode, &flags); | |
123 | if (status < 0) | |
124 | return status; | |
125 | ||
126 | flags &= OCFS2_FL_VISIBLE; | |
127 | return put_user(flags, (int __user *) arg); | |
128 | case OCFS2_IOC_SETFLAGS: | |
129 | if (get_user(flags, (int __user *) arg)) | |
130 | return -EFAULT; | |
131 | ||
42a74f20 DH |
132 | status = mnt_want_write(filp->f_path.mnt); |
133 | if (status) | |
134 | return status; | |
135 | status = ocfs2_set_inode_attr(inode, flags, | |
ca4d147e | 136 | OCFS2_FL_MODIFIABLE); |
42a74f20 DH |
137 | mnt_drop_write(filp->f_path.mnt); |
138 | return status; | |
b2580103 MF |
139 | case OCFS2_IOC_RESVSP: |
140 | case OCFS2_IOC_RESVSP64: | |
141 | case OCFS2_IOC_UNRESVSP: | |
142 | case OCFS2_IOC_UNRESVSP64: | |
143 | if (copy_from_user(&sr, (int __user *) arg, sizeof(sr))) | |
144 | return -EFAULT; | |
145 | ||
146 | return ocfs2_change_file_space(filp, cmd, &sr); | |
d659072f | 147 | case OCFS2_IOC_GROUP_EXTEND: |
0957f007 MF |
148 | if (!capable(CAP_SYS_RESOURCE)) |
149 | return -EPERM; | |
150 | ||
d659072f TM |
151 | if (get_user(new_clusters, (int __user *)arg)) |
152 | return -EFAULT; | |
153 | ||
154 | return ocfs2_group_extend(inode, new_clusters); | |
7909f2bf TM |
155 | case OCFS2_IOC_GROUP_ADD: |
156 | case OCFS2_IOC_GROUP_ADD64: | |
0957f007 MF |
157 | if (!capable(CAP_SYS_RESOURCE)) |
158 | return -EPERM; | |
159 | ||
7909f2bf TM |
160 | if (copy_from_user(&input, (int __user *) arg, sizeof(input))) |
161 | return -EFAULT; | |
162 | ||
163 | return ocfs2_group_add(inode, &input); | |
ca4d147e HP |
164 | default: |
165 | return -ENOTTY; | |
166 | } | |
167 | } | |
168 | ||
586d232b MF |
169 | #ifdef CONFIG_COMPAT |
170 | long ocfs2_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg) | |
171 | { | |
586d232b MF |
172 | switch (cmd) { |
173 | case OCFS2_IOC32_GETFLAGS: | |
174 | cmd = OCFS2_IOC_GETFLAGS; | |
175 | break; | |
176 | case OCFS2_IOC32_SETFLAGS: | |
177 | cmd = OCFS2_IOC_SETFLAGS; | |
178 | break; | |
b2580103 MF |
179 | case OCFS2_IOC_RESVSP: |
180 | case OCFS2_IOC_RESVSP64: | |
181 | case OCFS2_IOC_UNRESVSP: | |
182 | case OCFS2_IOC_UNRESVSP64: | |
d659072f | 183 | case OCFS2_IOC_GROUP_EXTEND: |
7909f2bf TM |
184 | case OCFS2_IOC_GROUP_ADD: |
185 | case OCFS2_IOC_GROUP_ADD64: | |
b2580103 | 186 | break; |
586d232b MF |
187 | default: |
188 | return -ENOIOCTLCMD; | |
189 | } | |
190 | ||
c9ec1488 | 191 | return ocfs2_ioctl(file, cmd, arg); |
586d232b MF |
192 | } |
193 | #endif |