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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott7b718762005-11-02 14:58:39 +11002 * Copyright (c) 2004-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * 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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#include <linux/compat.h>
19#include <linux/init.h>
20#include <linux/ioctl.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070021#include <linux/syscalls.h>
22#include <linux/types.h>
23#include <linux/fs.h>
24#include <asm/uaccess.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#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
Eric Sandeen526c4202005-09-05 08:25:06 +100032#define _NATIVE_IOC(cmd, type) \
33 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
34
Linus Torvalds1da177e2005-04-16 15:20:36 -070035#if defined(CONFIG_IA64) || defined(CONFIG_X86_64)
36#define BROKEN_X86_ALIGNMENT
Eric Sandeen526c4202005-09-05 08:25:06 +100037/* on ia32 l_start is on a 32-bit boundary */
38typedef 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 */
59STATIC unsigned long
60xfs_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;
Nathan Scotte0edd592006-03-29 08:55:47 +100074
Eric Sandeen526c4202005-09-05 08:25:06 +100075 return (unsigned long)p;
76}
77
Linus Torvalds1da177e2005-04-16 15:20:36 -070078#else
79
80typedef struct xfs_fsop_bulkreq32 {
81 compat_uptr_t lastip; /* last inode # pointer */
82 __s32 icount; /* count of entries in buffer */
83 compat_uptr_t ubuffer; /* user buffer for inode desc. */
84 __s32 ocount; /* output count pointer */
85} xfs_fsop_bulkreq32_t;
86
Nathan Scottd3870392005-05-06 06:44:46 -070087STATIC unsigned long
88xfs_ioctl32_bulkstat(
89 unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -070090{
91 xfs_fsop_bulkreq32_t __user *p32 = (void __user *)arg;
92 xfs_fsop_bulkreq_t __user *p = compat_alloc_user_space(sizeof(*p));
93 u32 addr;
94
95 if (get_user(addr, &p32->lastip) ||
96 put_user(compat_ptr(addr), &p->lastip) ||
97 copy_in_user(&p->icount, &p32->icount, sizeof(s32)) ||
98 get_user(addr, &p32->ubuffer) ||
99 put_user(compat_ptr(addr), &p->ubuffer) ||
100 get_user(addr, &p32->ocount) ||
101 put_user(compat_ptr(addr), &p->ocount))
102 return -EFAULT;
103
104 return (unsigned long)p;
105}
106#endif
107
Nathan Scottd3870392005-05-06 06:44:46 -0700108STATIC long
Nathan Scotte0edd592006-03-29 08:55:47 +1000109xfs_compat_ioctl(
110 int mode,
111 struct file *file,
112 unsigned cmd,
113 unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114{
Josef "Jeff" Sipeke678fb02006-12-08 02:36:49 -0800115 struct inode *inode = file->f_path.dentry->d_inode;
Nathan Scott67fcaa72006-06-09 17:00:52 +1000116 bhv_vnode_t *vp = vn_from_inode(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118
119 switch (cmd) {
120 case XFS_IOC_DIOINFO:
121 case XFS_IOC_FSGEOMETRY_V1:
122 case XFS_IOC_FSGEOMETRY:
123 case XFS_IOC_GETVERSION:
124 case XFS_IOC_GETXFLAGS:
125 case XFS_IOC_SETXFLAGS:
126 case XFS_IOC_FSGETXATTR:
127 case XFS_IOC_FSSETXATTR:
128 case XFS_IOC_FSGETXATTRA:
129 case XFS_IOC_FSSETDM:
130 case XFS_IOC_GETBMAP:
131 case XFS_IOC_GETBMAPA:
132 case XFS_IOC_GETBMAPX:
133/* not handled
134 case XFS_IOC_FD_TO_HANDLE:
135 case XFS_IOC_PATH_TO_HANDLE:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136 case XFS_IOC_PATH_TO_FSHANDLE:
137 case XFS_IOC_OPEN_BY_HANDLE:
138 case XFS_IOC_FSSETDM_BY_HANDLE:
139 case XFS_IOC_READLINK_BY_HANDLE:
140 case XFS_IOC_ATTRLIST_BY_HANDLE:
141 case XFS_IOC_ATTRMULTI_BY_HANDLE:
142*/
143 case XFS_IOC_FSCOUNTS:
144 case XFS_IOC_SET_RESBLKS:
145 case XFS_IOC_GET_RESBLKS:
146 case XFS_IOC_FSGROWFSDATA:
147 case XFS_IOC_FSGROWFSLOG:
148 case XFS_IOC_FSGROWFSRT:
149 case XFS_IOC_FREEZE:
150 case XFS_IOC_THAW:
151 case XFS_IOC_GOINGDOWN:
152 case XFS_IOC_ERROR_INJECTION:
153 case XFS_IOC_ERROR_CLEARALL:
154 break;
155
Eric Sandeen526c4202005-09-05 08:25:06 +1000156#ifdef BROKEN_X86_ALIGNMENT
157 /* xfs_flock_t has wrong u32 vs u64 alignment */
158 case XFS_IOC_ALLOCSP_32:
159 case XFS_IOC_FREESP_32:
160 case XFS_IOC_ALLOCSP64_32:
161 case XFS_IOC_FREESP64_32:
162 case XFS_IOC_RESVSP_32:
163 case XFS_IOC_UNRESVSP_32:
164 case XFS_IOC_RESVSP64_32:
165 case XFS_IOC_UNRESVSP64_32:
166 arg = xfs_ioctl32_flock(arg);
167 cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
168 break;
169
170#else /* These are handled fine if no alignment issues */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171 case XFS_IOC_ALLOCSP:
172 case XFS_IOC_FREESP:
173 case XFS_IOC_RESVSP:
174 case XFS_IOC_UNRESVSP:
175 case XFS_IOC_ALLOCSP64:
176 case XFS_IOC_FREESP64:
177 case XFS_IOC_RESVSP64:
178 case XFS_IOC_UNRESVSP64:
Eric Sandeen526c4202005-09-05 08:25:06 +1000179 break;
180
181 /* xfs_bstat_t still has wrong u32 vs u64 alignment */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182 case XFS_IOC_SWAPEXT:
183 break;
184
185 case XFS_IOC_FSBULKSTAT_SINGLE:
186 case XFS_IOC_FSBULKSTAT:
187 case XFS_IOC_FSINUMBERS:
188 arg = xfs_ioctl32_bulkstat(arg);
189 break;
190#endif
191 default:
192 return -ENOIOCTLCMD;
193 }
194
Nathan Scott67fcaa72006-06-09 17:00:52 +1000195 error = bhv_vop_ioctl(vp, inode, file, mode, cmd, (void __user *)arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 VMODIFY(vp);
197
198 return error;
199}
200
Nathan Scottd3870392005-05-06 06:44:46 -0700201long
Nathan Scotta50cd262006-03-14 14:06:18 +1100202xfs_file_compat_ioctl(
Nathan Scotte0edd592006-03-29 08:55:47 +1000203 struct file *file,
Nathan Scottd3870392005-05-06 06:44:46 -0700204 unsigned cmd,
205 unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206{
Nathan Scotte0edd592006-03-29 08:55:47 +1000207 return xfs_compat_ioctl(0, file, cmd, arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208}
209
Nathan Scottd3870392005-05-06 06:44:46 -0700210long
Nathan Scotta50cd262006-03-14 14:06:18 +1100211xfs_file_compat_invis_ioctl(
Nathan Scotte0edd592006-03-29 08:55:47 +1000212 struct file *file,
Nathan Scottd3870392005-05-06 06:44:46 -0700213 unsigned cmd,
214 unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215{
Nathan Scotte0edd592006-03-29 08:55:47 +1000216 return xfs_compat_ioctl(IO_INVIS, file, cmd, arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217}