1/* 2 * Copyright (c) 2004-2005 Silicon Graphics, Inc. 3 * All Rights Reserved. 4 * 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 7 * published by the Free Software Foundation. 8 * 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. 13 * 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 17 */ 18#include <linux/compat.h> 19#include <linux/init.h> 20#include <linux/ioctl.h> 21#include <linux/syscalls.h> 22#include <linux/types.h> 23#include <linux/fs.h> 24#include <asm/uaccess.h> 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 32#define _NATIVE_IOC(cmd, type) \ 33 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type)) 34 35#if defined(CONFIG_IA64) || defined(CONFIG_X86_64) 36#define BROKEN_X86_ALIGNMENT 37/* 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; 74 75 return (unsigned long)p; 76} 77 78#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 87STATIC unsigned long 88xfs_ioctl32_bulkstat( 89 unsigned long arg) 90{ 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 108STATIC long 109xfs_compat_ioctl( 110 int mode, 111 struct file *file, 112 unsigned cmd, 113 unsigned long arg) 114{ 115 struct inode *inode = file->f_path.dentry->d_inode; 116 bhv_vnode_t *vp = vn_from_inode(inode); 117 int error; 118 119 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: 136 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; 155 156#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 */ 171 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: 179 break; 180 181 /* xfs_bstat_t still has wrong u32 vs u64 alignment */ 182 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 } 194 195 error = bhv_vop_ioctl(vp, inode, file, mode, cmd, (void __user *)arg); 196 VMODIFY(vp); 197 198 return error; 199} 200 201long 202xfs_file_compat_ioctl( 203 struct file *file, 204 unsigned cmd, 205 unsigned long arg) 206{ 207 return xfs_compat_ioctl(0, file, cmd, arg); 208} 209 210long 211xfs_file_compat_invis_ioctl( 212 struct file *file, 213 unsigned cmd, 214 unsigned long arg) 215{ 216 return xfs_compat_ioctl(IO_INVIS, file, cmd, arg); 217} 218