| /* |
| * 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 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. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| #include <linux/compat.h> |
| #include <linux/init.h> |
| #include <linux/ioctl.h> |
| #include <linux/syscalls.h> |
| #include <linux/types.h> |
| #include <linux/fs.h> |
| #include <asm/uaccess.h> |
| #include "xfs.h" |
| #include "xfs_fs.h" |
| #include "xfs_bit.h" |
| #include "xfs_log.h" |
| #include "xfs_inum.h" |
| #include "xfs_trans.h" |
| #include "xfs_sb.h" |
| #include "xfs_ag.h" |
| #include "xfs_dir2.h" |
| #include "xfs_dmapi.h" |
| #include "xfs_mount.h" |
| #include "xfs_bmap_btree.h" |
| #include "xfs_attr_sf.h" |
| #include "xfs_dir2_sf.h" |
| #include "xfs_vnode.h" |
| #include "xfs_dinode.h" |
| #include "xfs_inode.h" |
| #include "xfs_itable.h" |
| #include "xfs_error.h" |
| #include "xfs_dfrag.h" |
| #include "xfs_vnodeops.h" |
| #include "xfs_fsops.h" |
| #include "xfs_ioctl.h" |
| #include "xfs_ioctl32.h" |
| |
| #define _NATIVE_IOC(cmd, type) \ |
| _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type)) |
| |
| #ifdef BROKEN_X86_ALIGNMENT |
| STATIC int |
| xfs_compat_flock64_copyin( |
| xfs_flock64_t *bf, |
| compat_xfs_flock64_t __user *arg32) |
| { |
| if (get_user(bf->l_type, &arg32->l_type) || |
| get_user(bf->l_whence, &arg32->l_whence) || |
| get_user(bf->l_start, &arg32->l_start) || |
| get_user(bf->l_len, &arg32->l_len) || |
| get_user(bf->l_sysid, &arg32->l_sysid) || |
| get_user(bf->l_pid, &arg32->l_pid) || |
| copy_from_user(bf->l_pad, &arg32->l_pad, 4*sizeof(u32))) |
| return -XFS_ERROR(EFAULT); |
| return 0; |
| } |
| |
| STATIC int |
| xfs_compat_ioc_fsgeometry_v1( |
| struct xfs_mount *mp, |
| compat_xfs_fsop_geom_v1_t __user *arg32) |
| { |
| xfs_fsop_geom_t fsgeo; |
| int error; |
| |
| error = xfs_fs_geometry(mp, &fsgeo, 3); |
| if (error) |
| return -error; |
| /* The 32-bit variant simply has some padding at the end */ |
| if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1))) |
| return -XFS_ERROR(EFAULT); |
| return 0; |
| } |
| |
| STATIC int |
| xfs_inumbers_fmt_compat( |
| void __user *ubuffer, |
| const xfs_inogrp_t *buffer, |
| long count, |
| long *written) |
| { |
| compat_xfs_inogrp_t __user *p32 = ubuffer; |
| long i; |
| |
| for (i = 0; i < count; i++) { |
| if (put_user(buffer[i].xi_startino, &p32[i].xi_startino) || |
| put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) || |
| put_user(buffer[i].xi_allocmask, &p32[i].xi_allocmask)) |
| return -XFS_ERROR(EFAULT); |
| } |
| *written = count * sizeof(*p32); |
| return 0; |
| } |
| |
| #else |
| #define xfs_inumbers_fmt_compat xfs_inumbers_fmt |
| #endif |
| |
| STATIC int |
| xfs_ioctl32_bstime_copyin( |
| xfs_bstime_t *bstime, |
| compat_xfs_bstime_t __user *bstime32) |
| { |
| compat_time_t sec32; /* tv_sec differs on 64 vs. 32 */ |
| |
| if (get_user(sec32, &bstime32->tv_sec) || |
| get_user(bstime->tv_nsec, &bstime32->tv_nsec)) |
| return -XFS_ERROR(EFAULT); |
| bstime->tv_sec = sec32; |
| return 0; |
| } |
| |
| /* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */ |
| STATIC int |
| xfs_ioctl32_bstat_copyin( |
| xfs_bstat_t *bstat, |
| compat_xfs_bstat_t __user *bstat32) |
| { |
| if (get_user(bstat->bs_ino, &bstat32->bs_ino) || |
| get_user(bstat->bs_mode, &bstat32->bs_mode) || |
| get_user(bstat->bs_nlink, &bstat32->bs_nlink) || |
| get_user(bstat->bs_uid, &bstat32->bs_uid) || |
| get_user(bstat->bs_gid, &bstat32->bs_gid) || |
| get_user(bstat->bs_rdev, &bstat32->bs_rdev) || |
| get_user(bstat->bs_blksize, &bstat32->bs_blksize) || |
| get_user(bstat->bs_size, &bstat32->bs_size) || |
| xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) || |
| xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) || |
| xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) || |
| get_user(bstat->bs_blocks, &bstat32->bs_size) || |
| get_user(bstat->bs_xflags, &bstat32->bs_size) || |
| get_user(bstat->bs_extsize, &bstat32->bs_extsize) || |
| get_user(bstat->bs_extents, &bstat32->bs_extents) || |
| get_user(bstat->bs_gen, &bstat32->bs_gen) || |
| get_user(bstat->bs_projid, &bstat32->bs_projid) || |
| get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) || |
| get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) || |
| get_user(bstat->bs_aextents, &bstat32->bs_aextents)) |
| return -XFS_ERROR(EFAULT); |
| return 0; |
| } |
| |
| /* XFS_IOC_FSBULKSTAT and friends */ |
| |
| STATIC int |
| xfs_bstime_store_compat( |
| compat_xfs_bstime_t __user *p32, |
| const xfs_bstime_t *p) |
| { |
| __s32 sec32; |
| |
| sec32 = p->tv_sec; |
| if (put_user(sec32, &p32->tv_sec) || |
| put_user(p->tv_nsec, &p32->tv_nsec)) |
| return -XFS_ERROR(EFAULT); |
| return 0; |
| } |
| |
| STATIC int |
| xfs_bulkstat_one_fmt_compat( |
| void __user *ubuffer, |
| const xfs_bstat_t *buffer) |
| { |
| compat_xfs_bstat_t __user *p32 = ubuffer; |
| |
| if (put_user(buffer->bs_ino, &p32->bs_ino) || |
| put_user(buffer->bs_mode, &p32->bs_mode) || |
| put_user(buffer->bs_nlink, &p32->bs_nlink) || |
| put_user(buffer->bs_uid, &p32->bs_uid) || |
| put_user(buffer->bs_gid, &p32->bs_gid) || |
| put_user(buffer->bs_rdev, &p32->bs_rdev) || |
| put_user(buffer->bs_blksize, &p32->bs_blksize) || |
| put_user(buffer->bs_size, &p32->bs_size) || |
| xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) || |
| xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) || |
| xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) || |
| put_user(buffer->bs_blocks, &p32->bs_blocks) || |
| put_user(buffer->bs_xflags, &p32->bs_xflags) || |
| put_user(buffer->bs_extsize, &p32->bs_extsize) || |
| put_user(buffer->bs_extents, &p32->bs_extents) || |
| put_user(buffer->bs_gen, &p32->bs_gen) || |
| put_user(buffer->bs_projid, &p32->bs_projid) || |
| put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) || |
| put_user(buffer->bs_dmstate, &p32->bs_dmstate) || |
| put_user(buffer->bs_aextents, &p32->bs_aextents)) |
| return -XFS_ERROR(EFAULT); |
| return sizeof(*p32); |
| } |
| |
| /* copied from xfs_ioctl.c */ |
| STATIC int |
| xfs_ioc_bulkstat_compat( |
| xfs_mount_t *mp, |
| unsigned int cmd, |
| void __user *arg) |
| { |
| compat_xfs_fsop_bulkreq_t __user *p32 = (void __user *)arg; |
| u32 addr; |
| xfs_fsop_bulkreq_t bulkreq; |
| int count; /* # of records returned */ |
| xfs_ino_t inlast; /* last inode number */ |
| int done; |
| int error; |
| |
| /* done = 1 if there are more stats to get and if bulkstat */ |
| /* should be called again (unused here, but used in dmapi) */ |
| |
| if (!capable(CAP_SYS_ADMIN)) |
| return -XFS_ERROR(EPERM); |
| |
| if (XFS_FORCED_SHUTDOWN(mp)) |
| return -XFS_ERROR(EIO); |
| |
| if (get_user(addr, &p32->lastip)) |
| return -XFS_ERROR(EFAULT); |
| bulkreq.lastip = compat_ptr(addr); |
| if (get_user(bulkreq.icount, &p32->icount) || |
| get_user(addr, &p32->ubuffer)) |
| return -XFS_ERROR(EFAULT); |
| bulkreq.ubuffer = compat_ptr(addr); |
| if (get_user(addr, &p32->ocount)) |
| return -XFS_ERROR(EFAULT); |
| bulkreq.ocount = compat_ptr(addr); |
| |
| if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) |
| return -XFS_ERROR(EFAULT); |
| |
| if ((count = bulkreq.icount) <= 0) |
| return -XFS_ERROR(EINVAL); |
| |
| if (bulkreq.ubuffer == NULL) |
| return -XFS_ERROR(EINVAL); |
| |
| if (cmd == XFS_IOC_FSINUMBERS) |
| error = xfs_inumbers(mp, &inlast, &count, |
| bulkreq.ubuffer, xfs_inumbers_fmt_compat); |
| else { |
| /* declare a var to get a warning in case the type changes */ |
| bulkstat_one_fmt_pf formatter = xfs_bulkstat_one_fmt_compat; |
| error = xfs_bulkstat(mp, &inlast, &count, |
| xfs_bulkstat_one, formatter, |
| sizeof(compat_xfs_bstat_t), bulkreq.ubuffer, |
| BULKSTAT_FG_QUICK, &done); |
| } |
| if (error) |
| return -error; |
| |
| if (bulkreq.ocount != NULL) { |
| if (copy_to_user(bulkreq.lastip, &inlast, |
| sizeof(xfs_ino_t))) |
| return -XFS_ERROR(EFAULT); |
| |
| if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) |
| return -XFS_ERROR(EFAULT); |
| } |
| |
| return 0; |
| } |
| |
| STATIC int |
| xfs_compat_handlereq_copyin( |
| xfs_fsop_handlereq_t *hreq, |
| compat_xfs_fsop_handlereq_t __user *arg32) |
| { |
| compat_xfs_fsop_handlereq_t hreq32; |
| |
| if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t))) |
| return -XFS_ERROR(EFAULT); |
| |
| hreq->fd = hreq32.fd; |
| hreq->path = compat_ptr(hreq32.path); |
| hreq->oflags = hreq32.oflags; |
| hreq->ihandle = compat_ptr(hreq32.ihandle); |
| hreq->ihandlen = hreq32.ihandlen; |
| hreq->ohandle = compat_ptr(hreq32.ohandle); |
| hreq->ohandlen = compat_ptr(hreq32.ohandlen); |
| |
| return 0; |
| } |
| |
| STATIC long |
| xfs_compat_ioctl( |
| xfs_inode_t *ip, |
| struct file *filp, |
| int ioflags, |
| unsigned cmd, |
| void __user *arg) |
| { |
| struct inode *inode = filp->f_path.dentry->d_inode; |
| xfs_mount_t *mp = ip->i_mount; |
| int error; |
| |
| xfs_itrace_entry(XFS_I(inode)); |
| switch (cmd) { |
| case XFS_IOC_DIOINFO: |
| case XFS_IOC_FSGEOMETRY: |
| 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_FSSETDM_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; |
| |
| case XFS_IOC_GETXFLAGS_32: |
| case XFS_IOC_SETXFLAGS_32: |
| case XFS_IOC_GETVERSION_32: |
| cmd = _NATIVE_IOC(cmd, long); |
| break; |
| case XFS_IOC_SWAPEXT: { |
| struct xfs_swapext sxp; |
| struct compat_xfs_swapext __user *sxu = arg; |
| |
| /* Bulk copy in up to the sx_stat field, then grab bstat */ |
| if (copy_from_user(&sxp, sxu, |
| offsetof(xfs_swapext_t, sx_stat)) || |
| xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat)) |
| return -XFS_ERROR(EFAULT); |
| error = xfs_swapext(&sxp); |
| return -error; |
| } |
| #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: { |
| struct xfs_flock64 bf; |
| |
| if (xfs_compat_flock64_copyin(&bf, arg)) |
| return -XFS_ERROR(EFAULT); |
| cmd = _NATIVE_IOC(cmd, struct xfs_flock64); |
| return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); |
| } |
| case XFS_IOC_FSGEOMETRY_V1_32: |
| return xfs_compat_ioc_fsgeometry_v1(mp, arg); |
| #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: |
| case XFS_IOC_FSGEOMETRY_V1: |
| break; |
| #endif |
| case XFS_IOC_FSBULKSTAT_32: |
| case XFS_IOC_FSBULKSTAT_SINGLE_32: |
| case XFS_IOC_FSINUMBERS_32: |
| cmd = _NATIVE_IOC(cmd, struct xfs_fsop_bulkreq); |
| return xfs_ioc_bulkstat_compat(XFS_I(inode)->i_mount, |
| cmd, (void __user*)arg); |
| case XFS_IOC_FD_TO_HANDLE_32: |
| case XFS_IOC_PATH_TO_HANDLE_32: |
| case XFS_IOC_PATH_TO_FSHANDLE_32: { |
| struct xfs_fsop_handlereq hreq; |
| |
| if (xfs_compat_handlereq_copyin(&hreq, arg)) |
| return -XFS_ERROR(EFAULT); |
| cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq); |
| return xfs_find_handle(cmd, &hreq); |
| } |
| case XFS_IOC_OPEN_BY_HANDLE_32: { |
| struct xfs_fsop_handlereq hreq; |
| |
| if (xfs_compat_handlereq_copyin(&hreq, arg)) |
| return -XFS_ERROR(EFAULT); |
| return xfs_open_by_handle(mp, &hreq, filp, inode); |
| } |
| case XFS_IOC_READLINK_BY_HANDLE_32: { |
| struct xfs_fsop_handlereq hreq; |
| |
| if (xfs_compat_handlereq_copyin(&hreq, arg)) |
| return -XFS_ERROR(EFAULT); |
| return xfs_readlink_by_handle(mp, &hreq, inode); |
| } |
| default: |
| return -XFS_ERROR(ENOIOCTLCMD); |
| } |
| |
| error = xfs_ioctl(ip, filp, ioflags, cmd, arg); |
| return error; |
| } |
| |
| long |
| xfs_file_compat_ioctl( |
| struct file *filp, |
| unsigned int cmd, |
| unsigned long p) |
| { |
| struct inode *inode = filp->f_path.dentry->d_inode; |
| |
| return xfs_compat_ioctl(XFS_I(inode), filp, 0, cmd, (void __user *)p); |
| } |
| |
| long |
| xfs_file_compat_invis_ioctl( |
| struct file *filp, |
| unsigned int cmd, |
| unsigned long p) |
| { |
| struct inode *inode = filp->f_path.dentry->d_inode; |
| |
| return xfs_compat_ioctl(XFS_I(inode), filp, IO_INVIS, cmd, |
| (void __user *)p); |
| } |