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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2004-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 LT |
18 | #include <linux/compat.h> |
19 | #include <linux/init.h> | |
20 | #include <linux/ioctl.h> | |
1da177e4 LT |
21 | #include <linux/syscalls.h> |
22 | #include <linux/types.h> | |
23 | #include <linux/fs.h> | |
24 | #include <asm/uaccess.h> | |
1da177e4 LT |
25 | #include "xfs.h" |
26 | #include "xfs_types.h" | |
27 | #include "xfs_fs.h" | |
28 | #include "xfs_vfs.h" | |
29 | #include "xfs_vnode.h" | |
30 | #include "xfs_dfrag.h" | |
31 | ||
526c420c ES |
32 | #define _NATIVE_IOC(cmd, type) \ |
33 | _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type)) | |
34 | ||
1da177e4 LT |
35 | #if defined(CONFIG_IA64) || defined(CONFIG_X86_64) |
36 | #define BROKEN_X86_ALIGNMENT | |
526c420c ES |
37 | /* on ia32 l_start is on a 32-bit boundary */ |
38 | typedef struct xfs_flock64_32 { | |
39 | __s16 l_type; | |
40 | __s16 l_whence; | |
41 | __s64 l_start __attribute__((packed)); | |
42 | /* len == 0 means until end of file */ | |
43 | __s64 l_len __attribute__((packed)); | |
44 | __s32 l_sysid; | |
45 | __u32 l_pid; | |
46 | __s32 l_pad[4]; /* reserve area */ | |
47 | } xfs_flock64_32_t; | |
48 | ||
49 | #define XFS_IOC_ALLOCSP_32 _IOW ('X', 10, struct xfs_flock64_32) | |
50 | #define XFS_IOC_FREESP_32 _IOW ('X', 11, struct xfs_flock64_32) | |
51 | #define XFS_IOC_ALLOCSP64_32 _IOW ('X', 36, struct xfs_flock64_32) | |
52 | #define XFS_IOC_FREESP64_32 _IOW ('X', 37, struct xfs_flock64_32) | |
53 | #define XFS_IOC_RESVSP_32 _IOW ('X', 40, struct xfs_flock64_32) | |
54 | #define XFS_IOC_UNRESVSP_32 _IOW ('X', 41, struct xfs_flock64_32) | |
55 | #define XFS_IOC_RESVSP64_32 _IOW ('X', 42, struct xfs_flock64_32) | |
56 | #define XFS_IOC_UNRESVSP64_32 _IOW ('X', 43, struct xfs_flock64_32) | |
57 | ||
58 | /* just account for different alignment */ | |
59 | STATIC unsigned long | |
60 | xfs_ioctl32_flock( | |
61 | unsigned long arg) | |
62 | { | |
63 | xfs_flock64_32_t __user *p32 = (void __user *)arg; | |
64 | xfs_flock64_t __user *p = compat_alloc_user_space(sizeof(*p)); | |
65 | ||
66 | if (copy_in_user(&p->l_type, &p32->l_type, sizeof(s16)) || | |
67 | copy_in_user(&p->l_whence, &p32->l_whence, sizeof(s16)) || | |
68 | copy_in_user(&p->l_start, &p32->l_start, sizeof(s64)) || | |
69 | copy_in_user(&p->l_len, &p32->l_len, sizeof(s64)) || | |
70 | copy_in_user(&p->l_sysid, &p32->l_sysid, sizeof(s32)) || | |
71 | copy_in_user(&p->l_pid, &p32->l_pid, sizeof(u32)) || | |
72 | copy_in_user(&p->l_pad, &p32->l_pad, 4*sizeof(u32))) | |
73 | return -EFAULT; | |
e0edd596 | 74 | |
526c420c ES |
75 | return (unsigned long)p; |
76 | } | |
77 | ||
547e00c3 MM |
78 | typedef struct compat_xfs_fsop_geom_v1 { |
79 | __u32 blocksize; /* filesystem (data) block size */ | |
80 | __u32 rtextsize; /* realtime extent size */ | |
81 | __u32 agblocks; /* fsblocks in an AG */ | |
82 | __u32 agcount; /* number of allocation groups */ | |
83 | __u32 logblocks; /* fsblocks in the log */ | |
84 | __u32 sectsize; /* (data) sector size, bytes */ | |
85 | __u32 inodesize; /* inode size in bytes */ | |
86 | __u32 imaxpct; /* max allowed inode space(%) */ | |
87 | __u64 datablocks; /* fsblocks in data subvolume */ | |
88 | __u64 rtblocks; /* fsblocks in realtime subvol */ | |
89 | __u64 rtextents; /* rt extents in realtime subvol*/ | |
90 | __u64 logstart; /* starting fsblock of the log */ | |
91 | unsigned char uuid[16]; /* unique id of the filesystem */ | |
92 | __u32 sunit; /* stripe unit, fsblocks */ | |
93 | __u32 swidth; /* stripe width, fsblocks */ | |
94 | __s32 version; /* structure version */ | |
95 | __u32 flags; /* superblock version flags */ | |
96 | __u32 logsectsize; /* log sector size, bytes */ | |
97 | __u32 rtsectsize; /* realtime sector size, bytes */ | |
98 | __u32 dirblocksize; /* directory block size, bytes */ | |
99 | } __attribute__((packed)) compat_xfs_fsop_geom_v1_t; | |
100 | ||
101 | #define XFS_IOC_FSGEOMETRY_V1_32 \ | |
102 | _IOR ('X', 100, struct compat_xfs_fsop_geom_v1) | |
103 | ||
104 | STATIC unsigned long xfs_ioctl32_geom_v1(unsigned long arg) | |
105 | { | |
106 | compat_xfs_fsop_geom_v1_t __user *p32 = (void __user *)arg; | |
107 | xfs_fsop_geom_v1_t __user *p = compat_alloc_user_space(sizeof(*p)); | |
108 | ||
109 | if (copy_in_user(p, p32, sizeof(*p32))) | |
110 | return -EFAULT; | |
111 | return (unsigned long)p; | |
112 | } | |
113 | ||
1da177e4 LT |
114 | #else |
115 | ||
116 | typedef struct xfs_fsop_bulkreq32 { | |
117 | compat_uptr_t lastip; /* last inode # pointer */ | |
118 | __s32 icount; /* count of entries in buffer */ | |
119 | compat_uptr_t ubuffer; /* user buffer for inode desc. */ | |
120 | __s32 ocount; /* output count pointer */ | |
121 | } xfs_fsop_bulkreq32_t; | |
122 | ||
d3870398 NS |
123 | STATIC unsigned long |
124 | xfs_ioctl32_bulkstat( | |
125 | unsigned long arg) | |
1da177e4 LT |
126 | { |
127 | xfs_fsop_bulkreq32_t __user *p32 = (void __user *)arg; | |
128 | xfs_fsop_bulkreq_t __user *p = compat_alloc_user_space(sizeof(*p)); | |
129 | u32 addr; | |
130 | ||
131 | if (get_user(addr, &p32->lastip) || | |
132 | put_user(compat_ptr(addr), &p->lastip) || | |
133 | copy_in_user(&p->icount, &p32->icount, sizeof(s32)) || | |
134 | get_user(addr, &p32->ubuffer) || | |
135 | put_user(compat_ptr(addr), &p->ubuffer) || | |
136 | get_user(addr, &p32->ocount) || | |
137 | put_user(compat_ptr(addr), &p->ocount)) | |
138 | return -EFAULT; | |
139 | ||
140 | return (unsigned long)p; | |
141 | } | |
142 | #endif | |
143 | ||
d3870398 | 144 | STATIC long |
e0edd596 NS |
145 | xfs_compat_ioctl( |
146 | int mode, | |
147 | struct file *file, | |
148 | unsigned cmd, | |
149 | unsigned long arg) | |
1da177e4 | 150 | { |
e678fb0d | 151 | struct inode *inode = file->f_path.dentry->d_inode; |
67fcaa73 | 152 | bhv_vnode_t *vp = vn_from_inode(inode); |
1da177e4 | 153 | int error; |
1da177e4 LT |
154 | |
155 | switch (cmd) { | |
156 | case XFS_IOC_DIOINFO: | |
1da177e4 LT |
157 | case XFS_IOC_FSGEOMETRY: |
158 | case XFS_IOC_GETVERSION: | |
159 | case XFS_IOC_GETXFLAGS: | |
160 | case XFS_IOC_SETXFLAGS: | |
161 | case XFS_IOC_FSGETXATTR: | |
162 | case XFS_IOC_FSSETXATTR: | |
163 | case XFS_IOC_FSGETXATTRA: | |
164 | case XFS_IOC_FSSETDM: | |
165 | case XFS_IOC_GETBMAP: | |
166 | case XFS_IOC_GETBMAPA: | |
167 | case XFS_IOC_GETBMAPX: | |
168 | /* not handled | |
169 | case XFS_IOC_FD_TO_HANDLE: | |
170 | case XFS_IOC_PATH_TO_HANDLE: | |
1da177e4 LT |
171 | case XFS_IOC_PATH_TO_FSHANDLE: |
172 | case XFS_IOC_OPEN_BY_HANDLE: | |
173 | case XFS_IOC_FSSETDM_BY_HANDLE: | |
174 | case XFS_IOC_READLINK_BY_HANDLE: | |
175 | case XFS_IOC_ATTRLIST_BY_HANDLE: | |
176 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
177 | */ | |
178 | case XFS_IOC_FSCOUNTS: | |
179 | case XFS_IOC_SET_RESBLKS: | |
180 | case XFS_IOC_GET_RESBLKS: | |
181 | case XFS_IOC_FSGROWFSDATA: | |
182 | case XFS_IOC_FSGROWFSLOG: | |
183 | case XFS_IOC_FSGROWFSRT: | |
184 | case XFS_IOC_FREEZE: | |
185 | case XFS_IOC_THAW: | |
186 | case XFS_IOC_GOINGDOWN: | |
187 | case XFS_IOC_ERROR_INJECTION: | |
188 | case XFS_IOC_ERROR_CLEARALL: | |
189 | break; | |
190 | ||
526c420c ES |
191 | #ifdef BROKEN_X86_ALIGNMENT |
192 | /* xfs_flock_t has wrong u32 vs u64 alignment */ | |
193 | case XFS_IOC_ALLOCSP_32: | |
194 | case XFS_IOC_FREESP_32: | |
195 | case XFS_IOC_ALLOCSP64_32: | |
196 | case XFS_IOC_FREESP64_32: | |
197 | case XFS_IOC_RESVSP_32: | |
198 | case XFS_IOC_UNRESVSP_32: | |
199 | case XFS_IOC_RESVSP64_32: | |
200 | case XFS_IOC_UNRESVSP64_32: | |
201 | arg = xfs_ioctl32_flock(arg); | |
202 | cmd = _NATIVE_IOC(cmd, struct xfs_flock64); | |
203 | break; | |
547e00c3 MM |
204 | case XFS_IOC_FSGEOMETRY_V1_32: |
205 | arg = xfs_ioctl32_geom_v1(arg); | |
206 | cmd = _NATIVE_IOC(cmd, struct xfs_fsop_geom_v1); | |
207 | break; | |
526c420c ES |
208 | |
209 | #else /* These are handled fine if no alignment issues */ | |
1da177e4 LT |
210 | case XFS_IOC_ALLOCSP: |
211 | case XFS_IOC_FREESP: | |
212 | case XFS_IOC_RESVSP: | |
213 | case XFS_IOC_UNRESVSP: | |
214 | case XFS_IOC_ALLOCSP64: | |
215 | case XFS_IOC_FREESP64: | |
216 | case XFS_IOC_RESVSP64: | |
217 | case XFS_IOC_UNRESVSP64: | |
547e00c3 | 218 | case XFS_IOC_FSGEOMETRY_V1: |
526c420c ES |
219 | break; |
220 | ||
221 | /* xfs_bstat_t still has wrong u32 vs u64 alignment */ | |
1da177e4 LT |
222 | case XFS_IOC_SWAPEXT: |
223 | break; | |
224 | ||
225 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
226 | case XFS_IOC_FSBULKSTAT: | |
227 | case XFS_IOC_FSINUMBERS: | |
228 | arg = xfs_ioctl32_bulkstat(arg); | |
229 | break; | |
230 | #endif | |
231 | default: | |
232 | return -ENOIOCTLCMD; | |
233 | } | |
234 | ||
67fcaa73 | 235 | error = bhv_vop_ioctl(vp, inode, file, mode, cmd, (void __user *)arg); |
1da177e4 LT |
236 | VMODIFY(vp); |
237 | ||
238 | return error; | |
239 | } | |
240 | ||
d3870398 | 241 | long |
a50cd269 | 242 | xfs_file_compat_ioctl( |
e0edd596 | 243 | struct file *file, |
d3870398 NS |
244 | unsigned cmd, |
245 | unsigned long arg) | |
1da177e4 | 246 | { |
e0edd596 | 247 | return xfs_compat_ioctl(0, file, cmd, arg); |
1da177e4 LT |
248 | } |
249 | ||
d3870398 | 250 | long |
a50cd269 | 251 | xfs_file_compat_invis_ioctl( |
e0edd596 | 252 | struct file *file, |
d3870398 NS |
253 | unsigned cmd, |
254 | unsigned long arg) | |
1da177e4 | 255 | { |
e0edd596 | 256 | return xfs_compat_ioctl(IO_INVIS, file, cmd, arg); |
1da177e4 | 257 | } |