/* * Copyright (c) 2004-2005 Silicon Graphics, Inc. All Rights Reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it would be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * * Further, this software is distributed without any warranty that it is * free of the rightful claim of any third person regarding infringement * or the like. Any license provided herein, whether implied or * otherwise, applies only to this software file. Patent licenses, if * any, provided herein do not apply to combinations of this program with * other software, or any other product whatsoever. * * You should have received a copy of the GNU General Public License along * with this program; if not, write the Free Software Foundation, Inc., 59 * Temple Place - Suite 330, Boston MA 02111-1307, USA. * * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, * Mountain View, CA 94043, or: * * http://www.sgi.com * * For further information regarding this notice, see: * * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ */ #include <linux/config.h> #include <linux/compat.h> #include <linux/init.h> #include <linux/ioctl.h> #include <linux/ioctl32.h> #include <linux/syscalls.h> #include <linux/types.h> #include <linux/fs.h> #include <asm/uaccess.h> #include "xfs.h" #include "xfs_types.h" #include "xfs_fs.h" #include "xfs_vfs.h" #include "xfs_vnode.h" #include "xfs_dfrag.h" #define _NATIVE_IOC(cmd, type) \ _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type)) #if defined(CONFIG_IA64) || defined(CONFIG_X86_64) #define BROKEN_X86_ALIGNMENT /* on ia32 l_start is on a 32-bit boundary */ typedef struct xfs_flock64_32 { __s16 l_type; __s16 l_whence; __s64 l_start __attribute__((packed)); /* len == 0 means until end of file */ __s64 l_len __attribute__((packed)); __s32 l_sysid; __u32 l_pid; __s32 l_pad[4]; /* reserve area */ } xfs_flock64_32_t; #define XFS_IOC_ALLOCSP_32 _IOW ('X', 10, struct xfs_flock64_32) #define XFS_IOC_FREESP_32 _IOW ('X', 11, struct xfs_flock64_32) #define XFS_IOC_ALLOCSP64_32 _IOW ('X', 36, struct xfs_flock64_32) #define XFS_IOC_FREESP64_32 _IOW ('X', 37, struct xfs_flock64_32) #define XFS_IOC_RESVSP_32 _IOW ('X', 40, struct xfs_flock64_32) #define XFS_IOC_UNRESVSP_32 _IOW ('X', 41, struct xfs_flock64_32) #define XFS_IOC_RESVSP64_32 _IOW ('X', 42, struct xfs_flock64_32) #define XFS_IOC_UNRESVSP64_32 _IOW ('X', 43, struct xfs_flock64_32) /* just account for different alignment */ STATIC unsigned long xfs_ioctl32_flock( unsigned long arg) { xfs_flock64_32_t __user *p32 = (void __user *)arg; xfs_flock64_t __user *p = compat_alloc_user_space(sizeof(*p)); if (copy_in_user(&p->l_type, &p32->l_type, sizeof(s16)) || copy_in_user(&p->l_whence, &p32->l_whence, sizeof(s16)) || copy_in_user(&p->l_start, &p32->l_start, sizeof(s64)) || copy_in_user(&p->l_len, &p32->l_len, sizeof(s64)) || copy_in_user(&p->l_sysid, &p32->l_sysid, sizeof(s32)) || copy_in_user(&p->l_pid, &p32->l_pid, sizeof(u32)) || copy_in_user(&p->l_pad, &p32->l_pad, 4*sizeof(u32))) return -EFAULT; return (unsigned long)p; } #else typedef struct xfs_fsop_bulkreq32 { compat_uptr_t lastip; /* last inode # pointer */ __s32 icount; /* count of entries in buffer */ compat_uptr_t ubuffer; /* user buffer for inode desc. */ __s32 ocount; /* output count pointer */ } xfs_fsop_bulkreq32_t; STATIC unsigned long xfs_ioctl32_bulkstat( unsigned long arg) { xfs_fsop_bulkreq32_t __user *p32 = (void __user *)arg; xfs_fsop_bulkreq_t __user *p = compat_alloc_user_space(sizeof(*p)); u32 addr; if (get_user(addr, &p32->lastip) || put_user(compat_ptr(addr), &p->lastip) || copy_in_user(&p->icount, &p32->icount, sizeof(s32)) || get_user(addr, &p32->ubuffer) || put_user(compat_ptr(addr), &p->ubuffer) || get_user(addr, &p32->ocount) || put_user(compat_ptr(addr), &p->ocount)) return -EFAULT; return (unsigned long)p; } #endif STATIC long __linvfs_compat_ioctl(int mode, struct file *f, unsigned cmd, unsigned long arg) { int error; struct inode *inode = f->f_dentry->d_inode; vnode_t *vp = LINVFS_GET_VP(inode); switch (cmd) { case XFS_IOC_DIOINFO: case XFS_IOC_FSGEOMETRY_V1: case XFS_IOC_FSGEOMETRY: case XFS_IOC_GETVERSION: case XFS_IOC_GETXFLAGS: case XFS_IOC_SETXFLAGS: case XFS_IOC_FSGETXATTR: case XFS_IOC_FSSETXATTR: case XFS_IOC_FSGETXATTRA: case XFS_IOC_FSSETDM: case XFS_IOC_GETBMAP: case XFS_IOC_GETBMAPA: case XFS_IOC_GETBMAPX: /* not handled case XFS_IOC_FD_TO_HANDLE: case XFS_IOC_PATH_TO_HANDLE: case XFS_IOC_PATH_TO_FSHANDLE: case XFS_IOC_OPEN_BY_HANDLE: case XFS_IOC_FSSETDM_BY_HANDLE: case XFS_IOC_READLINK_BY_HANDLE: case XFS_IOC_ATTRLIST_BY_HANDLE: case XFS_IOC_ATTRMULTI_BY_HANDLE: */ case XFS_IOC_FSCOUNTS: case XFS_IOC_SET_RESBLKS: case XFS_IOC_GET_RESBLKS: case XFS_IOC_FSGROWFSDATA: case XFS_IOC_FSGROWFSLOG: case XFS_IOC_FSGROWFSRT: case XFS_IOC_FREEZE: case XFS_IOC_THAW: case XFS_IOC_GOINGDOWN: case XFS_IOC_ERROR_INJECTION: case XFS_IOC_ERROR_CLEARALL: break; #ifdef BROKEN_X86_ALIGNMENT /* xfs_flock_t has wrong u32 vs u64 alignment */ case XFS_IOC_ALLOCSP_32: case XFS_IOC_FREESP_32: case XFS_IOC_ALLOCSP64_32: case XFS_IOC_FREESP64_32: case XFS_IOC_RESVSP_32: case XFS_IOC_UNRESVSP_32: case XFS_IOC_RESVSP64_32: case XFS_IOC_UNRESVSP64_32: arg = xfs_ioctl32_flock(arg); cmd = _NATIVE_IOC(cmd, struct xfs_flock64); break; #else /* These are handled fine if no alignment issues */ case XFS_IOC_ALLOCSP: case XFS_IOC_FREESP: case XFS_IOC_RESVSP: case XFS_IOC_UNRESVSP: case XFS_IOC_ALLOCSP64: case XFS_IOC_FREESP64: case XFS_IOC_RESVSP64: case XFS_IOC_UNRESVSP64: break; /* xfs_bstat_t still has wrong u32 vs u64 alignment */ case XFS_IOC_SWAPEXT: break; case XFS_IOC_FSBULKSTAT_SINGLE: case XFS_IOC_FSBULKSTAT: case XFS_IOC_FSINUMBERS: arg = xfs_ioctl32_bulkstat(arg); break; #endif default: return -ENOIOCTLCMD; } VOP_IOCTL(vp, inode, f, mode, cmd, (void __user *)arg, error); VMODIFY(vp); return error; } long linvfs_compat_ioctl( struct file *f, unsigned cmd, unsigned long arg) { return __linvfs_compat_ioctl(0, f, cmd, arg); } long linvfs_compat_invis_ioctl( struct file *f, unsigned cmd, unsigned long arg) { return __linvfs_compat_ioctl(IO_INVIS, f, cmd, arg); }