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Diffstat (limited to 'fs/9p/vfs_file.c')
-rw-r--r--fs/9p/vfs_file.c26
1 files changed, 16 insertions, 10 deletions
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 2bedc6c94fc2..e97c92bd6f16 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -59,9 +59,13 @@ int v9fs_file_open(struct inode *inode, struct file *file)
struct p9_fid *fid;
int omode;
- P9_DPRINTK(P9_DEBUG_VFS, "inode: %p file: %p \n", inode, file);
+ P9_DPRINTK(P9_DEBUG_VFS, "inode: %p file: %p\n", inode, file);
v9ses = v9fs_inode2v9ses(inode);
- omode = v9fs_uflags2omode(file->f_flags, v9fs_proto_dotu(v9ses));
+ if (v9fs_proto_dotl(v9ses))
+ omode = file->f_flags;
+ else
+ omode = v9fs_uflags2omode(file->f_flags,
+ v9fs_proto_dotu(v9ses));
fid = file->private_data;
if (!fid) {
fid = v9fs_fid_clone(file->f_path.dentry);
@@ -73,11 +77,12 @@ int v9fs_file_open(struct inode *inode, struct file *file)
p9_client_clunk(fid);
return err;
}
- if (omode & P9_OTRUNC) {
+ if (file->f_flags & O_TRUNC) {
i_size_write(inode, 0);
inode->i_blocks = 0;
}
- if ((file->f_flags & O_APPEND) && (!v9fs_proto_dotu(v9ses)))
+ if ((file->f_flags & O_APPEND) &&
+ (!v9fs_proto_dotu(v9ses) && !v9fs_proto_dotl(v9ses)))
generic_file_llseek(file, 0, SEEK_END);
}
@@ -139,7 +144,7 @@ ssize_t
v9fs_file_readn(struct file *filp, char *data, char __user *udata, u32 count,
u64 offset)
{
- int n, total;
+ int n, total, size;
struct p9_fid *fid = filp->private_data;
P9_DPRINTK(P9_DEBUG_VFS, "fid %d offset %llu count %d\n", fid->fid,
@@ -147,6 +152,7 @@ v9fs_file_readn(struct file *filp, char *data, char __user *udata, u32 count,
n = 0;
total = 0;
+ size = fid->iounit ? fid->iounit : fid->clnt->msize - P9_IOHDRSZ;
do {
n = p9_client_read(fid, data, udata, offset, count);
if (n <= 0)
@@ -160,7 +166,7 @@ v9fs_file_readn(struct file *filp, char *data, char __user *udata, u32 count,
offset += n;
count -= n;
total += n;
- } while (count > 0 && n == (fid->clnt->msize - P9_IOHDRSZ));
+ } while (count > 0 && n == size);
if (n < 0)
total = n;
@@ -183,11 +189,13 @@ v9fs_file_read(struct file *filp, char __user *udata, size_t count,
{
int ret;
struct p9_fid *fid;
+ size_t size;
P9_DPRINTK(P9_DEBUG_VFS, "count %zu offset %lld\n", count, *offset);
fid = filp->private_data;
- if (count > (fid->clnt->msize - P9_IOHDRSZ))
+ size = fid->iounit ? fid->iounit : fid->clnt->msize - P9_IOHDRSZ;
+ if (count > size)
ret = v9fs_file_readn(filp, NULL, udata, count, *offset);
else
ret = p9_client_read(fid, NULL, udata, *offset, count);
@@ -224,9 +232,7 @@ v9fs_file_write(struct file *filp, const char __user * data,
fid = filp->private_data;
clnt = fid->clnt;
- rsize = fid->iounit;
- if (!rsize || rsize > clnt->msize-P9_IOHDRSZ)
- rsize = clnt->msize - P9_IOHDRSZ;
+ rsize = fid->iounit ? fid->iounit : clnt->msize - P9_IOHDRSZ;
do {
if (count < rsize)