diff options
| -rw-r--r-- | fs/cifs/cifssmb.c | 2 | ||||
| -rw-r--r-- | fs/cifs/link.c | 52 |
2 files changed, 27 insertions, 27 deletions
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index 5759ba53dc96..d06260251c30 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c | |||
| @@ -2475,7 +2475,7 @@ querySymLinkRetry: | |||
| 2475 | /* BB FIXME investigate remapping reserved chars here */ | 2475 | /* BB FIXME investigate remapping reserved chars here */ |
| 2476 | *symlinkinfo = cifs_strndup_from_ucs(data_start, count, | 2476 | *symlinkinfo = cifs_strndup_from_ucs(data_start, count, |
| 2477 | is_unicode, nls_codepage); | 2477 | is_unicode, nls_codepage); |
| 2478 | if (!symlinkinfo) | 2478 | if (!*symlinkinfo) |
| 2479 | rc = -ENOMEM; | 2479 | rc = -ENOMEM; |
| 2480 | } | 2480 | } |
| 2481 | } | 2481 | } |
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; |
