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-rw-r--r--fs/9p/cache.c1
-rw-r--r--fs/9p/fid.c13
-rw-r--r--fs/9p/v9fs.c22
-rw-r--r--fs/9p/v9fs.h1
-rw-r--r--fs/9p/vfs_dentry.c1
-rw-r--r--fs/9p/vfs_dir.c3
-rw-r--r--fs/9p/vfs_inode.c10
-rw-r--r--fs/9p/vfs_super.c4
8 files changed, 48 insertions, 7 deletions
diff --git a/fs/9p/cache.c b/fs/9p/cache.c
index e777961939f..0dbe0d139ac 100644
--- a/fs/9p/cache.c
+++ b/fs/9p/cache.c
@@ -22,6 +22,7 @@
#include <linux/jiffies.h>
#include <linux/file.h>
+#include <linux/slab.h>
#include <linux/stat.h>
#include <linux/sched.h>
#include <linux/fs.h>
diff --git a/fs/9p/fid.c b/fs/9p/fid.c
index 08b2eb15704..7317b39b281 100644
--- a/fs/9p/fid.c
+++ b/fs/9p/fid.c
@@ -24,6 +24,7 @@
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/fs.h>
+#include <linux/slab.h>
#include <linux/sched.h>
#include <linux/idr.h>
#include <net/9p/9p.h>
@@ -110,7 +111,7 @@ struct p9_fid *v9fs_fid_lookup(struct dentry *dentry)
{
int i, n, l, clone, any, access;
u32 uid;
- struct p9_fid *fid;
+ struct p9_fid *fid, *old_fid = NULL;
struct dentry *d, *ds;
struct v9fs_session_info *v9ses;
char **wnames, *uname;
@@ -183,10 +184,18 @@ struct p9_fid *v9fs_fid_lookup(struct dentry *dentry)
l = min(n - i, P9_MAXWELEM);
fid = p9_client_walk(fid, l, &wnames[i], clone);
if (IS_ERR(fid)) {
+ if (old_fid) {
+ /*
+ * If we fail, clunk fid which are mapping
+ * to path component and not the last component
+ * of the path.
+ */
+ p9_client_clunk(old_fid);
+ }
kfree(wnames);
return fid;
}
-
+ old_fid = fid;
i += l;
clone = 0;
}
diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index 6c7f6a25111..5c5bc848007 100644
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -29,6 +29,7 @@
#include <linux/sched.h>
#include <linux/parser.h>
#include <linux/idr.h>
+#include <linux/slab.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
#include <net/9p/transport.h>
@@ -241,7 +242,7 @@ struct p9_fid *v9fs_session_init(struct v9fs_session_info *v9ses,
list_add(&v9ses->slist, &v9fs_sessionlist);
spin_unlock(&v9fs_sessionlist_lock);
- v9ses->flags = V9FS_PROTO_2000U | V9FS_ACCESS_USER;
+ v9ses->flags = V9FS_ACCESS_USER;
strcpy(v9ses->uname, V9FS_DEFUSER);
strcpy(v9ses->aname, V9FS_DEFANAME);
v9ses->uid = ~0;
@@ -262,8 +263,10 @@ struct p9_fid *v9fs_session_init(struct v9fs_session_info *v9ses,
goto error;
}
- if (!p9_is_proto_dotu(v9ses->clnt))
- v9ses->flags &= ~V9FS_PROTO_2000U;
+ if (p9_is_proto_dotl(v9ses->clnt))
+ v9ses->flags |= V9FS_PROTO_2000L;
+ else if (p9_is_proto_dotu(v9ses->clnt))
+ v9ses->flags |= V9FS_PROTO_2000U;
v9ses->maxdata = v9ses->clnt->msize - P9_IOHDRSZ;
@@ -340,6 +343,19 @@ void v9fs_session_cancel(struct v9fs_session_info *v9ses) {
p9_client_disconnect(v9ses->clnt);
}
+/**
+ * v9fs_session_begin_cancel - Begin terminate of a session
+ * @v9ses: session to terminate
+ *
+ * After this call we don't allow any request other than clunk.
+ */
+
+void v9fs_session_begin_cancel(struct v9fs_session_info *v9ses)
+{
+ P9_DPRINTK(P9_DEBUG_ERROR, "begin cancel session %p\n", v9ses);
+ p9_client_begin_disconnect(v9ses->clnt);
+}
+
extern int v9fs_error_init(void);
static struct kobject *v9fs_kobj;
diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h
index 6b801d1ddf4..a0a8d3dd136 100644
--- a/fs/9p/v9fs.h
+++ b/fs/9p/v9fs.h
@@ -108,6 +108,7 @@ struct p9_fid *v9fs_session_init(struct v9fs_session_info *, const char *,
char *);
void v9fs_session_close(struct v9fs_session_info *v9ses);
void v9fs_session_cancel(struct v9fs_session_info *v9ses);
+void v9fs_session_begin_cancel(struct v9fs_session_info *v9ses);
#define V9FS_MAGIC 0x01021997
diff --git a/fs/9p/vfs_dentry.c b/fs/9p/vfs_dentry.c
index d74325295b1..cbf4e50f393 100644
--- a/fs/9p/vfs_dentry.c
+++ b/fs/9p/vfs_dentry.c
@@ -34,6 +34,7 @@
#include <linux/namei.h>
#include <linux/idr.h>
#include <linux/sched.h>
+#include <linux/slab.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
diff --git a/fs/9p/vfs_dir.c b/fs/9p/vfs_dir.c
index d8a3afe4ff7..0adfd64dfce 100644
--- a/fs/9p/vfs_dir.c
+++ b/fs/9p/vfs_dir.c
@@ -32,6 +32,7 @@
#include <linux/sched.h>
#include <linux/inet.h>
#include <linux/idr.h>
+#include <linux/slab.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
@@ -130,6 +131,8 @@ static int v9fs_dir_readdir(struct file *filp, void *dirent, filldir_t filldir)
rdir = (struct p9_rdir *) fid->rdir;
err = mutex_lock_interruptible(&rdir->mutex);
+ if (err)
+ return err;
while (err == 0) {
if (rdir->tail == rdir->head) {
err = v9fs_file_readn(filp, rdir->buf, NULL,
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 5fe45d692c9..f2434fc9d2c 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -34,6 +34,7 @@
#include <linux/namei.h>
#include <linux/idr.h>
#include <linux/sched.h>
+#include <linux/slab.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
@@ -431,6 +432,7 @@ error:
static int v9fs_remove(struct inode *dir, struct dentry *file, int rmdir)
{
+ int retval;
struct inode *file_inode;
struct v9fs_session_info *v9ses;
struct p9_fid *v9fid;
@@ -444,7 +446,10 @@ static int v9fs_remove(struct inode *dir, struct dentry *file, int rmdir)
if (IS_ERR(v9fid))
return PTR_ERR(v9fid);
- return p9_client_remove(v9fid);
+ retval = p9_client_remove(v9fid);
+ if (!retval)
+ drop_nlink(file_inode);
+ return retval;
}
static int
@@ -656,6 +661,9 @@ static struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
P9_DPRINTK(P9_DEBUG_VFS, "dir: %p dentry: (%s) %p nameidata: %p\n",
dir, dentry->d_name.name, dentry, nameidata);
+ if (dentry->d_name.len > NAME_MAX)
+ return ERR_PTR(-ENAMETOOLONG);
+
sb = dir->i_sb;
v9ses = v9fs_inode2v9ses(dir);
dfid = v9fs_fid_lookup(dentry->d_parent);
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index 69357c0d989..491108bd6e0 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -37,6 +37,7 @@
#include <linux/mount.h>
#include <linux/idr.h>
#include <linux/sched.h>
+#include <linux/slab.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
@@ -193,6 +194,7 @@ static void v9fs_kill_super(struct super_block *s)
kill_anon_super(s);
+ v9fs_session_cancel(v9ses);
v9fs_session_close(v9ses);
kfree(v9ses);
s->s_fs_info = NULL;
@@ -205,7 +207,7 @@ v9fs_umount_begin(struct super_block *sb)
struct v9fs_session_info *v9ses;
v9ses = sb->s_fs_info;
- v9fs_session_cancel(v9ses);
+ v9fs_session_begin_cancel(v9ses);
}
static const struct super_operations v9fs_super_ops = {
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-24 14:36:49 +0000