diff options
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_ioctl32.c | 65 |
1 files changed, 62 insertions, 3 deletions
diff --git a/fs/xfs/linux-2.6/xfs_ioctl32.c b/fs/xfs/linux-2.6/xfs_ioctl32.c index 0f8f1384eb36..4636b7f86f1f 100644 --- a/fs/xfs/linux-2.6/xfs_ioctl32.c +++ b/fs/xfs/linux-2.6/xfs_ioctl32.c @@ -47,8 +47,52 @@ #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 { @@ -103,7 +147,6 @@ __linvfs_compat_ioctl(int mode, struct file *f, unsigned cmd, unsigned long arg) /* not handled case XFS_IOC_FD_TO_HANDLE: case XFS_IOC_PATH_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: @@ -124,8 +167,21 @@ __linvfs_compat_ioctl(int mode, struct file *f, unsigned cmd, unsigned long arg) case XFS_IOC_ERROR_CLEARALL: break; -#ifndef BROKEN_X86_ALIGNMENT - /* xfs_flock_t and xfs_bstat_t have wrong u32 vs u64 alignment */ +#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: @@ -134,6 +190,9 @@ __linvfs_compat_ioctl(int mode, struct file *f, unsigned cmd, unsigned long arg) 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; |