/* * 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 #include #include #include #include #include #include #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_vfs.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" #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 #define _PACKED __attribute__((packed)) /* 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; } typedef struct compat_xfs_fsop_geom_v1 { __u32 blocksize; /* filesystem (data) block size */ __u32 rtextsize; /* realtime extent size */ __u32 agblocks; /* fsblocks in an AG */ __u32 agcount; /* number of allocation groups */ __u32 logblocks; /* fsblocks in the log */ __u32 sectsize; /* (data) sector size, bytes */ __u32 inodesize; /* inode size in bytes */ __u32 imaxpct; /* max allowed inode space(%) */ __u64 datablocks; /* fsblocks in data subvolume */ __u64 rtblocks; /* fsblocks in realtime subvol */ __u64 rtextents; /* rt extents in realtime subvol*/ __u64 logstart; /* starting fsblock of the log */ unsigned char uuid[16]; /* unique id of the filesystem */ __u32 sunit; /* stripe unit, fsblocks */ __u32 swidth; /* stripe width, fsblocks */ __s32 version; /* structure version */ __u32 flags; /* superblock version flags */ __u32 logsectsize; /* log sector size, bytes */ __u32 rtsectsize; /* realtime sector size, bytes */ __u32 dirblocksize; /* directory block size, bytes */ } __attribute__((packed)) compat_xfs_fsop_geom_v1_t; #define XFS_IOC_FSGEOMETRY_V1_32 \ _IOR ('X', 100, struct compat_xfs_fsop_geom_v1) STATIC unsigned long xfs_ioctl32_geom_v1(unsigned long arg) { compat_xfs_fsop_geom_v1_t __user *p32 = (void __user *)arg; xfs_fsop_geom_v1_t __user *p = compat_alloc_user_space(sizeof(*p)); if (copy_in_user(p, p32, sizeof(*p32))) return -EFAULT; return (unsigned long)p; } typedef struct compat_xfs_inogrp { __u64 xi_startino; /* starting inode number */ __s32 xi_alloccount; /* # bits set in allocmask */ __u64 xi_allocmask; /* mask of allocated inodes */ } __attribute__((packed)) compat_xfs_inogrp_t; STATIC int xfs_inumbers_fmt_compat( void __user *ubuffer, const xfs_inogrp_t *buffer, long count, long *written) { compat_xfs_inogrp_t *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 -EFAULT; } *written = count * sizeof(*p32); return 0; } #else #define xfs_inumbers_fmt_compat xfs_inumbers_fmt #define _PACKED #endif /* XFS_IOC_FSBULKSTAT and friends */ typedef struct compat_xfs_bstime { __s32 tv_sec; /* seconds */ __s32 tv_nsec; /* and nanoseconds */ } compat_xfs_bstime_t; 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 -EFAULT; return 0; } typedef struct compat_xfs_bstat { __u64 bs_ino; /* inode number */ __u16 bs_mode; /* type and mode */ __u16 bs_nlink; /* number of links */ __u32 bs_uid; /* user id */ __u32 bs_gid; /* group id */ __u32 bs_rdev; /* device value */ __s32 bs_blksize; /* block size */ __s64 bs_size; /* file size */ compat_xfs_bstime_t bs_atime; /* access time */ compat_xfs_bstime_t bs_mtime; /* modify time */ compat_xfs_bstime_t bs_ctime; /* inode change time */ int64_t bs_blocks; /* number of blocks */ __u32 bs_xflags; /* extended flags */ __s32 bs_extsize; /* extent size */ __s32 bs_extents; /* number of extents */ __u32 bs_gen; /* generation count */ __u16 bs_projid; /* project id */ unsigned char bs_pad[14]; /* pad space, unused */ __u32 bs_dmevmask; /* DMIG event mask */ __u16 bs_dmstate; /* DMIG state info */ __u16 bs_aextents; /* attribute number of extents */ } _PACKED compat_xfs_bstat_t; 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 -EFAULT; return sizeof(*p32); } typedef struct compat_xfs_fsop_bulkreq { compat_uptr_t lastip; /* last inode # pointer */ __s32 icount; /* count of entries in buffer */ compat_uptr_t ubuffer; /* user buffer for inode desc. */ compat_uptr_t ocount; /* output count pointer */ } compat_xfs_fsop_bulkreq_t; #define XFS_IOC_FSBULKSTAT_32 \ _IOWR('X', 101, struct compat_xfs_fsop_bulkreq) #define XFS_IOC_FSBULKSTAT_SINGLE_32 \ _IOWR('X', 102, struct compat_xfs_fsop_bulkreq) #define XFS_IOC_FSINUMBERS_32 \ _IOWR('X', 103, struct compat_xfs_fsop_bulkreq) /* 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 -EPERM; if (XFS_FORCED_SHUTDOWN(mp)) return -XFS_ERROR(EIO); if (get_user(addr, &p32->lastip)) return -EFAULT; bulkreq.lastip = compat_ptr(addr); if (get_user(bulkreq.icount, &p32->icount) || get_user(addr, &p32->ubuffer)) return -EFAULT; bulkreq.ubuffer = compat_ptr(addr); if (get_user(addr, &p32->ocount)) return -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 (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; } typedef struct compat_xfs_fsop_handlereq { __u32 fd; /* fd for FD_TO_HANDLE */ compat_uptr_t path; /* user pathname */ __u32 oflags; /* open flags */ compat_uptr_t ihandle; /* user supplied handle */ __u32 ihandlen; /* user supplied length */ compat_uptr_t ohandle; /* user buffer for handle */ compat_uptr_t ohandlen; /* user buffer length */ } compat_xfs_fsop_handlereq_t; #define XFS_IOC_PATH_TO_FSHANDLE_32 \ _IOWR('X', 104, struct compat_xfs_fsop_handlereq) #define XFS_IOC_PATH_TO_HANDLE_32 \ _IOWR('X', 105, struct compat_xfs_fsop_handlereq) #define XFS_IOC_FD_TO_HANDLE_32 \ _IOWR('X', 106, struct compat_xfs_fsop_handlereq) #define XFS_IOC_OPEN_BY_HANDLE_32 \ _IOWR('X', 107, struct compat_xfs_fsop_handlereq) #define XFS_IOC_READLINK_BY_HANDLE_32 \ _IOWR('X', 108, struct compat_xfs_fsop_handlereq) STATIC unsigned long xfs_ioctl32_fshandle(unsigned long arg) { compat_xfs_fsop_handlereq_t __user *p32 = (void __user *)arg; xfs_fsop_handlereq_t __user *p = compat_alloc_user_space(sizeof(*p)); u32 addr; if (copy_in_user(&p->fd, &p32->fd, sizeof(__u32)) || get_user(addr, &p32->path) || put_user(compat_ptr(addr), &p->path) || copy_in_user(&p->oflags, &p32->oflags, sizeof(__u32)) || get_user(addr, &p32->ihandle) || put_user(compat_ptr(addr), &p->ihandle) || copy_in_user(&p->ihandlen, &p32->ihandlen, sizeof(__u32)) || get_user(addr, &p32->ohandle) || put_user(compat_ptr(addr), &p->ohandle) || get_user(addr, &p32->ohandlen) || put_user(compat_ptr(addr), &p->ohandlen)) return -EFAULT; return (unsigned long)p; } STATIC long xfs_compat_ioctl( int mode, struct file *file, unsigned cmd, unsigned long arg) { struct inode *inode = file->f_path.dentry->d_inode; bhv_vnode_t *vp = vn_from_inode(inode); int error; switch (cmd) { case XFS_IOC_DIOINFO: 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_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; #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; case XFS_IOC_FSGEOMETRY_V1_32: arg = xfs_ioctl32_geom_v1(arg); cmd = _NATIVE_IOC(cmd, struct xfs_fsop_geom_v1); 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: case XFS_IOC_FSGEOMETRY_V1: break; /* xfs_bstat_t still has wrong u32 vs u64 alignment */ case XFS_IOC_SWAPEXT: 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_BHVTOI(VNHEAD(vp))->i_mount, cmd, (void*)arg); case XFS_IOC_FD_TO_HANDLE_32: case XFS_IOC_PATH_TO_HANDLE_32: case XFS_IOC_PATH_TO_FSHANDLE_32: case XFS_IOC_OPEN_BY_HANDLE_32: case XFS_IOC_READLINK_BY_HANDLE_32: arg = xfs_ioctl32_fshandle(arg); cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq); break; default: return -ENOIOCTLCMD; } error = bhv_vop_ioctl(vp, inode, file, mode, cmd, (void __user *)arg); VMODIFY(vp); return error; } long xfs_file_compat_ioctl( struct file *file, unsigned cmd, unsigned long arg) { return xfs_compat_ioctl(0, file, cmd, arg); } long xfs_file_compat_invis_ioctl( struct file *file, unsigned cmd, unsigned long arg) { return xfs_compat_ioctl(IO_INVIS, file, cmd, arg); }