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-rw-r--r--fs/cifs/link.c52
1 files changed, 26 insertions, 26 deletions
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index ea9d11e3dcbb..cd83c53fcbb5 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -107,48 +107,48 @@ void *
107cifs_follow_link(struct dentry *direntry, struct nameidata *nd) 107cifs_follow_link(struct dentry *direntry, struct nameidata *nd)
108{ 108{
109 struct inode *inode = direntry->d_inode; 109 struct inode *inode = direntry->d_inode;
110 int rc = -EACCES; 110 int rc = -ENOMEM;
111 int xid; 111 int xid;
112 char *full_path = NULL; 112 char *full_path = NULL;
113 char *target_path = ERR_PTR(-ENOMEM); 113 char *target_path = NULL;
114 struct cifs_sb_info *cifs_sb; 114 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
115 struct cifsTconInfo *pTcon; 115 struct cifsTconInfo *tcon = cifs_sb->tcon;
116 116
117 xid = GetXid(); 117 xid = GetXid();
118 118
119 full_path = build_path_from_dentry(direntry); 119 /*
120 * For now, we just handle symlinks with unix extensions enabled.
121 * Eventually we should handle NTFS reparse points, and MacOS
122 * symlink support. For instance...
123 *
124 * rc = CIFSSMBQueryReparseLinkInfo(...)
125 *
126 * For now, just return -EACCES when the server doesn't support posix
127 * extensions. Note that we still allow querying symlinks when posix
128 * extensions are manually disabled. We could disable these as well
129 * but there doesn't seem to be any harm in allowing the client to
130 * read them.
131 */
132 if (!(tcon->ses->capabilities & CAP_UNIX)) {
133 rc = -EACCES;
134 goto out;
135 }
120 136
137 full_path = build_path_from_dentry(direntry);
121 if (!full_path) 138 if (!full_path)
122 goto out; 139 goto out;
123 140
124 cFYI(1, ("Full path: %s inode = 0x%p", full_path, inode)); 141 cFYI(1, ("Full path: %s inode = 0x%p", full_path, inode));
125 cifs_sb = CIFS_SB(inode->i_sb);
126 pTcon = cifs_sb->tcon;
127
128 /* We could change this to:
129 if (pTcon->unix_ext)
130 but there does not seem any point in refusing to
131 get symlink info if we can, even if unix extensions
132 turned off for this mount */
133
134 if (pTcon->ses->capabilities & CAP_UNIX)
135 rc = CIFSSMBUnixQuerySymLink(xid, pTcon, full_path,
136 &target_path,
137 cifs_sb->local_nls);
138 else {
139 /* BB add read reparse point symlink code here */
140 /* rc = CIFSSMBQueryReparseLinkInfo */
141 /* BB Add code to Query ReparsePoint info */
142 /* BB Add MAC style xsymlink check here if enabled */
143 }
144 142
143 rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, &target_path,
144 cifs_sb->local_nls);
145 kfree(full_path);
146out:
145 if (rc != 0) { 147 if (rc != 0) {
146 kfree(target_path); 148 kfree(target_path);
147 target_path = ERR_PTR(rc); 149 target_path = ERR_PTR(rc);
148 } 150 }
149 151
150 kfree(full_path);
151out:
152 FreeXid(xid); 152 FreeXid(xid);
153 nd_set_link(nd, target_path); 153 nd_set_link(nd, target_path);
154 return NULL; 154 return NULL;