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-rw-r--r--fs/fuse/dir.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index d1acab931330..b18e06daeffb 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -721,7 +721,7 @@ static int fuse_refresh_attributes(struct inode *inode)
721 * for which the owner of the mount has ptrace privilege. This 721 * for which the owner of the mount has ptrace privilege. This
722 * excludes processes started by other users, suid or sgid processes. 722 * excludes processes started by other users, suid or sgid processes.
723 */ 723 */
724static int fuse_allow_task(struct fuse_conn *fc, struct task_struct *task) 724int fuse_allow_task(struct fuse_conn *fc, struct task_struct *task)
725{ 725{
726 if (fc->flags & FUSE_ALLOW_OTHER) 726 if (fc->flags & FUSE_ALLOW_OTHER)
727 return 1; 727 return 1;
@@ -1005,6 +1005,9 @@ static int fuse_setattr(struct dentry *entry, struct iattr *attr)
1005 struct fuse_attr_out outarg; 1005 struct fuse_attr_out outarg;
1006 int err; 1006 int err;
1007 1007
1008 if (!fuse_allow_task(fc, current))
1009 return -EACCES;
1010
1008 if (fc->flags & FUSE_DEFAULT_PERMISSIONS) { 1011 if (fc->flags & FUSE_DEFAULT_PERMISSIONS) {
1009 err = inode_change_ok(inode, attr); 1012 err = inode_change_ok(inode, attr);
1010 if (err) 1013 if (err)
@@ -1172,6 +1175,9 @@ static ssize_t fuse_listxattr(struct dentry *entry, char *list, size_t size)
1172 struct fuse_getxattr_out outarg; 1175 struct fuse_getxattr_out outarg;
1173 ssize_t ret; 1176 ssize_t ret;
1174 1177
1178 if (!fuse_allow_task(fc, current))
1179 return -EACCES;
1180
1175 if (fc->no_listxattr) 1181 if (fc->no_listxattr)
1176 return -EOPNOTSUPP; 1182 return -EOPNOTSUPP;
1177 1183