diff options
Diffstat (limited to 'module/zcommon/zfs_uio.c')
| -rw-r--r-- | module/zcommon/zfs_uio.c | 36 |
1 files changed, 15 insertions, 21 deletions
diff --git a/module/zcommon/zfs_uio.c b/module/zcommon/zfs_uio.c index 990464594..90376f2ac 100644 --- a/module/zcommon/zfs_uio.c +++ b/module/zcommon/zfs_uio.c @@ -70,19 +70,16 @@ uiomove(void *p, size_t n, enum uio_rw rw, struct uio *uio) switch (uio->uio_segflg) { case UIO_USERSPACE: case UIO_USERISPACE: - /* p = kernel data pointer - * iov->iov_base = user data pointer */ - + /* + * p = kernel data pointer + * iov->iov_base = user data pointer + */ if (rw == UIO_READ) { if (copy_to_user(iov->iov_base, p, cnt)) - return EFAULT; - /* error = xcopyout_nta(p, iov->iov_base, cnt, - * (uio->uio_extflg & UIO_COPY_CACHED)); */ + return (EFAULT); } else { - /* error = xcopyin_nta(iov->iov_base, p, cnt, - * (uio->uio_extflg & UIO_COPY_CACHED)); */ if (copy_from_user(p, iov->iov_base, cnt)) - return EFAULT; + return (EFAULT); } break; case UIO_SYSSPACE: @@ -103,7 +100,7 @@ uiomove(void *p, size_t n, enum uio_rw rw, struct uio *uio) } EXPORT_SYMBOL(uiomove); -#define fuword8(uptr, vptr) get_user((*vptr), (uptr)) +#define fuword8(uptr, vptr) get_user((*vptr), (uptr)) /* * Fault in the pages of the first n bytes specified by the uio structure. @@ -194,21 +191,18 @@ uiocopy(void *p, size_t n, enum uio_rw rw, struct uio *uio, size_t *cbytes) case UIO_USERSPACE: case UIO_USERISPACE: - /* p = kernel data pointer - * iov->iov_base = user data pointer */ - + /* + * p = kernel data pointer + * iov->iov_base = user data pointer + */ if (rw == UIO_READ) { - /* * UIO_READ = copy data from kernel to user * */ + /* UIO_READ = copy data from kernel to user */ if (copy_to_user(iov->iov_base, p, cnt)) - return EFAULT; - /* error = xcopyout_nta(p, iov->iov_base, cnt, - * (uio->uio_extflg & UIO_COPY_CACHED)); */ + return (EFAULT); } else { - /* * UIO_WRITE = copy data from user to kernel * */ - /* error = xcopyin_nta(iov->iov_base, p, cnt, - * (uio->uio_extflg & UIO_COPY_CACHED)); */ + /* UIO_WRITE = copy data from user to kernel */ if (copy_from_user(p, iov->iov_base, cnt)) - return EFAULT; + return (EFAULT); } break; |