diff options
Diffstat (limited to 'fs/cifs/link.c')
-rw-r--r-- | fs/cifs/link.c | 52 |
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 * | |||
107 | cifs_follow_link(struct dentry *direntry, struct nameidata *nd) | 107 | cifs_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); | ||
146 | out: | ||
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); | ||
151 | out: | ||
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; |