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| author | Stefan Metzmacher <metze@samba.org> | 2010-08-05 21:13:44 +0200 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2010-09-29 19:04:30 +0000 |
| commit | 0fd43ae4758b2841656afda4439b80e8a3603af2 (patch) | |
| tree | e2d68bd9303c53a5f391c0b493b12e68fe58e43d /fs/cifs/link.c | |
| parent | 8bfb50a882ccd9804929876470f74edcb23d2326 (diff) | |
| download | linux-3.10-0fd43ae4758b2841656afda4439b80e8a3603af2.tar.gz linux-3.10-0fd43ae4758b2841656afda4439b80e8a3603af2.tar.bz2 linux-3.10-0fd43ae4758b2841656afda4439b80e8a3603af2.zip | |
cifs: implement CIFSQueryMFSymLink()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/link.c')
| -rw-r--r-- | fs/cifs/link.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/fs/cifs/link.c b/fs/cifs/link.c index bec212b09a0..6e4e8957595 100644 --- a/fs/cifs/link.c +++ b/fs/cifs/link.c @@ -91,6 +91,56 @@ CIFSParseMFSymlink(const u8 *buf, return 0; } +static int +CIFSQueryMFSymLink(const int xid, struct cifsTconInfo *tcon, + const unsigned char *searchName, char **symlinkinfo, + const struct nls_table *nls_codepage, int remap) +{ + int rc; + int oplock = 0; + __u16 netfid = 0; + u8 *buf; + char *pbuf; + unsigned int bytes_read = 0; + int buf_type = CIFS_NO_BUFFER; + unsigned int link_len = 0; + FILE_ALL_INFO file_info; + + rc = CIFSSMBOpen(xid, tcon, searchName, FILE_OPEN, GENERIC_READ, + CREATE_NOT_DIR, &netfid, &oplock, &file_info, + nls_codepage, remap); + if (rc != 0) + return rc; + + if (file_info.EndOfFile != CIFS_MF_SYMLINK_FILE_SIZE) { + CIFSSMBClose(xid, tcon, netfid); + /* it's not a symlink */ + return -EINVAL; + } + + buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL); + if (!buf) + return -ENOMEM; + pbuf = buf; + + rc = CIFSSMBRead(xid, tcon, netfid, + CIFS_MF_SYMLINK_FILE_SIZE /* length */, + 0 /* offset */, + &bytes_read, &pbuf, &buf_type); + CIFSSMBClose(xid, tcon, netfid); + if (rc != 0) { + kfree(buf); + return rc; + } + + rc = CIFSParseMFSymlink(buf, bytes_read, &link_len, symlinkinfo); + kfree(buf); + if (rc != 0) + return rc; + + return 0; +} + bool CIFSCouldBeMFSymlink(const struct cifs_fattr *fattr) { |