9P2010.L handshake: Add VFS flags
Add 9P2000.u and 9P2010.L protocol flags to V9FS VFS
This patch adds 9P2000.u and 9P2010.L protocol flags into V9FS VFS side code
and removes the single flag used for 'extended'.
Signed-off-by: Sripathi Kodi <sripathik@in.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
diff --git a/fs/9p/fid.c b/fs/9p/fid.c
index 14d9442..08b2eb1 100644
--- a/fs/9p/fid.c
+++ b/fs/9p/fid.c
@@ -151,7 +151,7 @@
if (access == V9FS_ACCESS_SINGLE)
return ERR_PTR(-EPERM);
- if (v9fs_extended(v9ses))
+ if (v9fs_proto_dotu(v9ses))
uname = NULL;
else
uname = v9ses->uname;
diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index 7d6c213..247f10a 100644
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -241,7 +241,7 @@
list_add(&v9ses->slist, &v9fs_sessionlist);
spin_unlock(&v9fs_sessionlist_lock);
- v9ses->flags = V9FS_EXTENDED | V9FS_ACCESS_USER;
+ v9ses->flags = V9FS_PROTO_2000U | V9FS_ACCESS_USER;
strcpy(v9ses->uname, V9FS_DEFUSER);
strcpy(v9ses->aname, V9FS_DEFANAME);
v9ses->uid = ~0;
@@ -263,12 +263,12 @@
}
if (!v9ses->clnt->dotu)
- v9ses->flags &= ~V9FS_EXTENDED;
+ v9ses->flags &= ~V9FS_PROTO_2000U;
v9ses->maxdata = v9ses->clnt->msize - P9_IOHDRSZ;
/* for legacy mode, fall back to V9FS_ACCESS_ANY */
- if (!v9fs_extended(v9ses) &&
+ if (!v9fs_proto_dotu(v9ses) &&
((v9ses->flags&V9FS_ACCESS_MASK) == V9FS_ACCESS_USER)) {
v9ses->flags &= ~V9FS_ACCESS_MASK;
diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h
index 019f4cc..79000bf 100644
--- a/fs/9p/v9fs.h
+++ b/fs/9p/v9fs.h
@@ -23,7 +23,8 @@
/**
* enum p9_session_flags - option flags for each 9P session
- * @V9FS_EXTENDED: whether or not to use 9P2000.u extensions
+ * @V9FS_PROTO_2000U: whether or not to use 9P2000.u extensions
+ * @V9FS_PROTO_2010L: whether or not to use 9P2010.l extensions
* @V9FS_ACCESS_SINGLE: only the mounting user can access the hierarchy
* @V9FS_ACCESS_USER: a new attach will be issued for every user (default)
* @V9FS_ACCESS_ANY: use a single attach for all users
@@ -32,11 +33,12 @@
* Session flags reflect options selected by users at mount time
*/
enum p9_session_flags {
- V9FS_EXTENDED = 0x01,
- V9FS_ACCESS_SINGLE = 0x02,
- V9FS_ACCESS_USER = 0x04,
- V9FS_ACCESS_ANY = 0x06,
- V9FS_ACCESS_MASK = 0x06,
+ V9FS_PROTO_2000U = 0x01,
+ V9FS_PROTO_2010L = 0x02,
+ V9FS_ACCESS_SINGLE = 0x04,
+ V9FS_ACCESS_USER = 0x08,
+ V9FS_ACCESS_ANY = 0x0C,
+ V9FS_ACCESS_MASK = 0x0C,
};
/* possible values of ->cache */
@@ -121,7 +123,12 @@
return (inode->i_sb->s_fs_info);
}
-static inline int v9fs_extended(struct v9fs_session_info *v9ses)
+static inline int v9fs_proto_dotu(struct v9fs_session_info *v9ses)
{
- return v9ses->flags & V9FS_EXTENDED;
+ return v9ses->flags & V9FS_PROTO_2000U;
+}
+
+static inline int v9fs_proto_dotl(struct v9fs_session_info *v9ses)
+{
+ return v9ses->flags & V9FS_PROTO_2010L;
}
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 74a0461..3612268 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -61,7 +61,7 @@
P9_DPRINTK(P9_DEBUG_VFS, "inode: %p file: %p \n", inode, file);
v9ses = v9fs_inode2v9ses(inode);
- omode = v9fs_uflags2omode(file->f_flags, v9fs_extended(v9ses));
+ omode = v9fs_uflags2omode(file->f_flags, v9fs_proto_dotu(v9ses));
fid = file->private_data;
if (!fid) {
fid = v9fs_fid_clone(file->f_path.dentry);
@@ -77,7 +77,7 @@
i_size_write(inode, 0);
inode->i_blocks = 0;
}
- if ((file->f_flags & O_APPEND) && (!v9fs_extended(v9ses)))
+ if ((file->f_flags & O_APPEND) && (!v9fs_proto_dotu(v9ses)))
generic_file_llseek(file, 0, SEEK_END);
}
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index a407fa3..d3d3c3c 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -60,7 +60,7 @@
res = mode & 0777;
if (S_ISDIR(mode))
res |= P9_DMDIR;
- if (v9fs_extended(v9ses)) {
+ if (v9fs_proto_dotu(v9ses)) {
if (S_ISLNK(mode))
res |= P9_DMSYMLINK;
if (v9ses->nodev == 0) {
@@ -102,21 +102,21 @@
if ((mode & P9_DMDIR) == P9_DMDIR)
res |= S_IFDIR;
- else if ((mode & P9_DMSYMLINK) && (v9fs_extended(v9ses)))
+ else if ((mode & P9_DMSYMLINK) && (v9fs_proto_dotu(v9ses)))
res |= S_IFLNK;
- else if ((mode & P9_DMSOCKET) && (v9fs_extended(v9ses))
+ else if ((mode & P9_DMSOCKET) && (v9fs_proto_dotu(v9ses))
&& (v9ses->nodev == 0))
res |= S_IFSOCK;
- else if ((mode & P9_DMNAMEDPIPE) && (v9fs_extended(v9ses))
+ else if ((mode & P9_DMNAMEDPIPE) && (v9fs_proto_dotu(v9ses))
&& (v9ses->nodev == 0))
res |= S_IFIFO;
- else if ((mode & P9_DMDEVICE) && (v9fs_extended(v9ses))
+ else if ((mode & P9_DMDEVICE) && (v9fs_proto_dotu(v9ses))
&& (v9ses->nodev == 0))
res |= S_IFBLK;
else
res |= S_IFREG;
- if (v9fs_extended(v9ses)) {
+ if (v9fs_proto_dotu(v9ses)) {
if ((mode & P9_DMSETUID) == P9_DMSETUID)
res |= S_ISUID;
@@ -265,7 +265,7 @@
case S_IFBLK:
case S_IFCHR:
case S_IFSOCK:
- if (!v9fs_extended(v9ses)) {
+ if (!v9fs_proto_dotu(v9ses)) {
P9_DPRINTK(P9_DEBUG_ERROR,
"special files without extended mode\n");
err = -EINVAL;
@@ -278,7 +278,7 @@
inode->i_fop = &v9fs_file_operations;
break;
case S_IFLNK:
- if (!v9fs_extended(v9ses)) {
+ if (!v9fs_proto_dotu(v9ses)) {
P9_DPRINTK(P9_DEBUG_ERROR,
"extended modes used w/o 9P2000.u\n");
err = -EINVAL;
@@ -288,7 +288,7 @@
break;
case S_IFDIR:
inc_nlink(inode);
- if (v9fs_extended(v9ses))
+ if (v9fs_proto_dotu(v9ses))
inode->i_op = &v9fs_dir_inode_operations_ext;
else
inode->i_op = &v9fs_dir_inode_operations;
@@ -575,7 +575,8 @@
flags = O_RDWR;
fid = v9fs_create(v9ses, dir, dentry, NULL, perm,
- v9fs_uflags2omode(flags, v9fs_extended(v9ses)));
+ v9fs_uflags2omode(flags,
+ v9fs_proto_dotu(v9ses)));
if (IS_ERR(fid)) {
err = PTR_ERR(fid);
fid = NULL;
@@ -858,7 +859,7 @@
if (iattr->ia_valid & ATTR_SIZE)
wstat.length = iattr->ia_size;
- if (v9fs_extended(v9ses)) {
+ if (v9fs_proto_dotu(v9ses)) {
if (iattr->ia_valid & ATTR_UID)
wstat.n_uid = iattr->ia_uid;
@@ -897,7 +898,7 @@
inode->i_uid = v9ses->dfltuid;
inode->i_gid = v9ses->dfltgid;
- if (v9fs_extended(v9ses)) {
+ if (v9fs_proto_dotu(v9ses)) {
inode->i_uid = stat->n_uid;
inode->i_gid = stat->n_gid;
}
@@ -976,7 +977,7 @@
if (IS_ERR(fid))
return PTR_ERR(fid);
- if (!v9fs_extended(v9ses))
+ if (!v9fs_proto_dotu(v9ses))
return -EBADF;
st = p9_client_stat(fid);
@@ -1066,7 +1067,7 @@
struct p9_fid *fid;
v9ses = v9fs_inode2v9ses(dir);
- if (!v9fs_extended(v9ses)) {
+ if (!v9fs_proto_dotu(v9ses)) {
P9_DPRINTK(P9_DEBUG_ERROR, "not extended\n");
return -EPERM;
}