static ssize_t
HgfsSendfile(struct file *file, // IN: File to read from
loff_t *offset, // IN/OUT: Where to start reading
size_t count, // IN: How much to read
read_actor_t actor, // IN: Routine to send a page of data
void *target) // IN: Destination file/socket
#endif
{
ssize_t result;
ASSERT(file);
ASSERT(file->f_dentry);
ASSERT(target);
ASSERT(offset);
ASSERT(actor);
LOG(6, (KERN_DEBUG "VMware hgfs: HgfsSendfile: was called\n"));
result = HgfsRevalidate(file->f_dentry);
if (result) {
LOG(4, (KERN_DEBUG "VMware hgfs: HgfsSendfile: invalid dentry\n"));
goto out;
}
result = generic_file_sendfile (file, offset, count, actor, target);
out:
return result;
}
ssize_t
xfs_sendfile(
bhv_desc_t *bdp,
struct file *filp,
loff_t *offset,
int ioflags,
size_t count,
read_actor_t actor,
void *target,
cred_t *credp)
{
ssize_t ret;
xfs_fsize_t n;
xfs_inode_t *ip;
xfs_mount_t *mp;
vnode_t *vp;
ip = XFS_BHVTOI(bdp);
vp = BHV_TO_VNODE(bdp);
mp = ip->i_mount;
vn_trace_entry(vp, "xfs_sendfile", (inst_t *)__return_address);
XFS_STATS_INC(xs_read_calls);
n = XFS_MAXIOFFSET(mp) - *offset;
if ((n <= 0) || (count == 0))
return 0;
if (n < count)
count = n;
if (XFS_FORCED_SHUTDOWN(ip->i_mount))
return -EIO;
xfs_ilock(ip, XFS_IOLOCK_SHARED);
if (DM_EVENT_ENABLED(vp->v_vfsp, ip, DM_EVENT_READ) &&
(!(ioflags & IO_INVIS))) {
vrwlock_t locktype = VRWLOCK_READ;
int error;
error = XFS_SEND_DATA(mp, DM_EVENT_READ, BHV_TO_VNODE(bdp), *offset, count,
FILP_DELAY_FLAG(filp), &locktype);
if (error) {
xfs_iunlock(ip, XFS_IOLOCK_SHARED);
return -error;
}
}
ret = generic_file_sendfile(filp, offset, count, actor, target);
xfs_iunlock(ip, XFS_IOLOCK_SHARED);
XFS_STATS_ADD(xs_read_bytes, ret);
xfs_ichgtime(ip, XFS_ICHGTIME_ACC);
return ret;
}
ssize_t
xixfs_file_sendfile(
struct file *in_file,
loff_t *ppos,
size_t count,
read_actor_t actor,
void *target
)
{
DebugTrace(DEBUG_LEVEL_ERROR, (DEBUG_TARGET_FCB|DEBUG_TARGET_VFSAPIT),
("ENTER xixfs_file_sendfile .\n"));
return generic_file_sendfile(in_file, ppos, count, actor, target);
}
static ssize_t
nfs_file_sendfile(struct file *filp, loff_t *ppos, size_t count,
read_actor_t actor, void *target)
{
struct dentry *dentry = filp->f_dentry;
struct inode *inode = dentry->d_inode;
ssize_t res;
dfprintk(VFS, "nfs: sendfile(%s/%s, %lu@%Lu)\n",
dentry->d_parent->d_name.name, dentry->d_name.name,
(unsigned long) count, (unsigned long long) *ppos);
res = nfs_revalidate_file(inode, filp);
if (!res)
res = generic_file_sendfile(filp, ppos, count, actor, target);
return res;
}
ssize_t
xfs_sendfile(
bhv_desc_t *bdp,
struct file *filp,
loff_t *offset,
int ioflags,
size_t count,
read_actor_t actor,
void *target,
cred_t *credp)
{
xfs_inode_t *ip = XFS_BHVTOI(bdp);
xfs_mount_t *mp = ip->i_mount;
ssize_t ret;
XFS_STATS_INC(xs_read_calls);
if (XFS_FORCED_SHUTDOWN(mp))
return -EIO;
xfs_ilock(ip, XFS_IOLOCK_SHARED);
if (DM_EVENT_ENABLED(BHV_TO_VNODE(bdp)->v_vfsp, ip, DM_EVENT_READ) &&
(!(ioflags & IO_INVIS))) {
vrwlock_t locktype = VRWLOCK_READ;
int error;
error = XFS_SEND_DATA(mp, DM_EVENT_READ, BHV_TO_VNODE(bdp),
*offset, count,
FILP_DELAY_FLAG(filp), &locktype);
if (error) {
xfs_iunlock(ip, XFS_IOLOCK_SHARED);
return -error;
}
}
xfs_rw_enter_trace(XFS_SENDFILE_ENTER, &ip->i_iocore,
(void *)(unsigned long)target, count, *offset, ioflags);
ret = generic_file_sendfile(filp, offset, count, actor, target);
if (ret > 0)
XFS_STATS_ADD(xs_read_bytes, ret);
xfs_iunlock(ip, XFS_IOLOCK_SHARED);
return ret;
}
ssize_t
xfs_sendfile(
struct xfs_inode *xip,
struct file *filp,
loff_t *offset,
int ioflags,
size_t count,
read_actor_t actor,
void *target,
cred_t *credp)
{
xfs_mount_t *mp = xip->i_mount;
ssize_t ret;
XFS_STATS_INC(xs_read_calls);
if (XFS_FORCED_SHUTDOWN(mp))
return -EIO;
xfs_ilock(xip, XFS_IOLOCK_SHARED);
if (DM_EVENT_ENABLED(xip, DM_EVENT_READ) &&
(!(ioflags & IO_INVIS))) {
int locktype = XFS_IOLOCK_SHARED;
int error;
error = XFS_SEND_DATA(mp, DM_EVENT_READ, xip,
*offset, count,
FILP_DELAY_FLAG(filp), &locktype);
if (error) {
xfs_iunlock(xip, XFS_IOLOCK_SHARED);
return -error;
}
}
xfs_rw_enter_trace(XFS_SENDFILE_ENTER, xip,
(void *)(unsigned long)target, count, *offset, ioflags);
ret = generic_file_sendfile(filp, offset, count, actor, target);
if (ret > 0)
XFS_STATS_ADD(xs_read_bytes, ret);
xfs_iunlock(xip, XFS_IOLOCK_SHARED);
return ret;
}
static ssize_t
smb_file_sendfile(struct file *file, loff_t *ppos,
size_t count, read_actor_t actor, void *target)
{
struct dentry *dentry = file->f_path.dentry;
ssize_t status;
VERBOSE("file %s/%s, pos=%Ld, count=%d\n",
DENTRY_PATH(dentry), *ppos, count);
status = smb_revalidate_inode(dentry);
if (status) {
PARANOIA("%s/%s validation failed, error=%Zd\n",
DENTRY_PATH(dentry), status);
goto out;
}
status = generic_file_sendfile(file, ppos, count, actor, target);
out:
return status;
}
