*/
/*
* Copyright (c) 2011, Lawrence Livermore National Security, LLC.
+ * Copyright (c) 2015 by Chunwei Chen. All rights reserved.
*/
+#ifdef CONFIG_COMPAT
+#include <linux/compat.h>
+#endif
#include <sys/dmu_objset.h>
#include <sys/zfs_vfsops.h>
#include <sys/zfs_vnops.h>
return (error);
}
-#if !defined(HAVE_VFS_ITERATE)
+#if !defined(HAVE_VFS_ITERATE) && !defined(HAVE_VFS_ITERATE_SHARED)
static int
zpl_readdir(struct file *filp, void *dirent, filldir_t filldir)
{
#error "Unsupported fops->fsync() implementation"
#endif
-static inline ssize_t
+static ssize_t
zpl_read_common_iovec(struct inode *ip, const struct iovec *iovp, size_t count,
- unsigned long nr_segs, loff_t *ppos, uio_seg_t segment,
- int flags, cred_t *cr)
+ unsigned long nr_segs, loff_t *ppos, uio_seg_t segment, int flags,
+ cred_t *cr, size_t skip)
{
ssize_t read;
uio_t uio;
int error;
fstrans_cookie_t cookie;
- uio.uio_iov = (struct iovec *)iovp;
+ uio.uio_iov = iovp;
+ uio.uio_skip = skip;
uio.uio_resid = count;
uio.uio_iovcnt = nr_segs;
uio.uio_loffset = *ppos;
iov.iov_len = len;
return (zpl_read_common_iovec(ip, &iov, len, 1, ppos, segment,
- flags, cr));
+ flags, cr, 0));
}
static ssize_t
static ssize_t
zpl_iter_read_common(struct kiocb *kiocb, const struct iovec *iovp,
- unsigned long nr_segs, size_t count)
+ unsigned long nr_segs, size_t count, uio_seg_t seg, size_t skip)
{
cred_t *cr = CRED();
struct file *filp = kiocb->ki_filp;
ssize_t read;
- size_t alloc_size = sizeof (struct iovec) * nr_segs;
- struct iovec *iov_tmp = kmem_alloc(alloc_size, KM_SLEEP);
- bcopy(iovp, iov_tmp, alloc_size);
-
- ASSERT(iovp);
crhold(cr);
- read = zpl_read_common_iovec(filp->f_mapping->host, iov_tmp, count,
- nr_segs, &kiocb->ki_pos, UIO_USERSPACE, filp->f_flags, cr);
+ read = zpl_read_common_iovec(filp->f_mapping->host, iovp, count,
+ nr_segs, &kiocb->ki_pos, seg, filp->f_flags, cr, skip);
crfree(cr);
- kmem_free(iov_tmp, alloc_size);
-
return (read);
}
static ssize_t
zpl_iter_read(struct kiocb *kiocb, struct iov_iter *to)
{
- return (zpl_iter_read_common(kiocb, to->iov, to->nr_segs,
- iov_iter_count(to)));
+ ssize_t ret;
+ uio_seg_t seg = UIO_USERSPACE;
+ if (to->type & ITER_KVEC)
+ seg = UIO_SYSSPACE;
+ if (to->type & ITER_BVEC)
+ seg = UIO_BVEC;
+ ret = zpl_iter_read_common(kiocb, to->iov, to->nr_segs,
+ iov_iter_count(to), seg, to->iov_offset);
+ if (ret > 0)
+ iov_iter_advance(to, ret);
+ return (ret);
}
#else
static ssize_t
zpl_aio_read(struct kiocb *kiocb, const struct iovec *iovp,
unsigned long nr_segs, loff_t pos)
{
- return (zpl_iter_read_common(kiocb, iovp, nr_segs, kiocb->ki_nbytes));
+ return (zpl_iter_read_common(kiocb, iovp, nr_segs, kiocb->ki_nbytes,
+ UIO_USERSPACE, 0));
}
#endif /* HAVE_VFS_RW_ITERATE */
-static inline ssize_t
+static ssize_t
zpl_write_common_iovec(struct inode *ip, const struct iovec *iovp, size_t count,
- unsigned long nr_segs, loff_t *ppos, uio_seg_t segment,
- int flags, cred_t *cr)
+ unsigned long nr_segs, loff_t *ppos, uio_seg_t segment, int flags,
+ cred_t *cr, size_t skip)
{
ssize_t wrote;
uio_t uio;
if (flags & O_APPEND)
*ppos = i_size_read(ip);
- uio.uio_iov = (struct iovec *)iovp;
+ uio.uio_iov = iovp;
+ uio.uio_skip = skip;
uio.uio_resid = count;
uio.uio_iovcnt = nr_segs;
uio.uio_loffset = *ppos;
iov.iov_len = len;
return (zpl_write_common_iovec(ip, &iov, len, 1, ppos, segment,
- flags, cr));
+ flags, cr, 0));
}
static ssize_t
static ssize_t
zpl_iter_write_common(struct kiocb *kiocb, const struct iovec *iovp,
- unsigned long nr_segs, size_t count)
+ unsigned long nr_segs, size_t count, uio_seg_t seg, size_t skip)
{
cred_t *cr = CRED();
struct file *filp = kiocb->ki_filp;
ssize_t wrote;
- size_t alloc_size = sizeof (struct iovec) * nr_segs;
- struct iovec *iov_tmp = kmem_alloc(alloc_size, KM_SLEEP);
- bcopy(iovp, iov_tmp, alloc_size);
-
- ASSERT(iovp);
crhold(cr);
- wrote = zpl_write_common_iovec(filp->f_mapping->host, iov_tmp, count,
- nr_segs, &kiocb->ki_pos, UIO_USERSPACE, filp->f_flags, cr);
+ wrote = zpl_write_common_iovec(filp->f_mapping->host, iovp, count,
+ nr_segs, &kiocb->ki_pos, seg, filp->f_flags, cr, skip);
crfree(cr);
- kmem_free(iov_tmp, alloc_size);
-
return (wrote);
}
static ssize_t
zpl_iter_write(struct kiocb *kiocb, struct iov_iter *from)
{
- return (zpl_iter_write_common(kiocb, from->iov, from->nr_segs,
- iov_iter_count(from)));
+ ssize_t ret;
+ uio_seg_t seg = UIO_USERSPACE;
+ if (from->type & ITER_KVEC)
+ seg = UIO_SYSSPACE;
+ if (from->type & ITER_BVEC)
+ seg = UIO_BVEC;
+ ret = zpl_iter_write_common(kiocb, from->iov, from->nr_segs,
+ iov_iter_count(from), seg, from->iov_offset);
+ if (ret > 0)
+ iov_iter_advance(from, ret);
+ return (ret);
}
#else
static ssize_t
zpl_aio_write(struct kiocb *kiocb, const struct iovec *iovp,
unsigned long nr_segs, loff_t pos)
{
- return (zpl_iter_write_common(kiocb, iovp, nr_segs, kiocb->ki_nbytes));
+ return (zpl_iter_write_common(kiocb, iovp, nr_segs, kiocb->ki_nbytes,
+ UIO_USERSPACE, 0));
}
#endif /* HAVE_VFS_RW_ITERATE */
loff_t maxbytes = ip->i_sb->s_maxbytes;
loff_t error;
- spl_inode_lock(ip);
+ spl_inode_lock_shared(ip);
cookie = spl_fstrans_mark();
error = -zfs_holey(ip, whence, &offset);
spl_fstrans_unmark(cookie);
if (error == 0)
error = lseek_execute(filp, ip, offset, maxbytes);
- spl_inode_unlock(ip);
+ spl_inode_unlock_shared(ip);
return (error);
}
static long
zpl_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
- return (zpl_ioctl(filp, cmd, arg));
+ switch (cmd) {
+ case FS_IOC32_GETFLAGS:
+ cmd = FS_IOC_GETFLAGS;
+ break;
+ case FS_IOC32_SETFLAGS:
+ cmd = FS_IOC_SETFLAGS;
+ break;
+ default:
+ return (-ENOTTY);
+ }
+ return (zpl_ioctl(filp, cmd, (unsigned long)compat_ptr(arg)));
}
#endif /* CONFIG_COMPAT */
const struct file_operations zpl_dir_file_operations = {
.llseek = generic_file_llseek,
.read = generic_read_dir,
-#ifdef HAVE_VFS_ITERATE
+#ifdef HAVE_VFS_ITERATE_SHARED
+ .iterate_shared = zpl_iterate,
+#elif defined(HAVE_VFS_ITERATE)
.iterate = zpl_iterate,
#else
.readdir = zpl_readdir,
projects / mirror_zfs-debian.git / blobdiff