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| author | Stefan Metzmacher <metze@samba.org> | 2010-08-03 11:24:22 +0200 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2010-09-29 21:04:30 +0200 |
| commit | 18bddd1059c5d1e17ad6e49c514c95484aa80a33 (patch) | |
| tree | 1c57174579d54d536dd269a22f2458bc500825dd | |
| parent | cifs: implement CIFSQueryMFSymLink() (diff) | |
| download | linux-18bddd1059c5d1e17ad6e49c514c95484aa80a33.tar.xz linux-18bddd1059c5d1e17ad6e49c514c95484aa80a33.zip | |
cifs: implement CIFSFormatMFSymlink()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>
| -rw-r--r-- | fs/cifs/link.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/fs/cifs/link.c b/fs/cifs/link.c index 6e4e8957595d..0473a86031a5 100644 --- a/fs/cifs/link.c +++ b/fs/cifs/link.c @@ -92,6 +92,47 @@ CIFSParseMFSymlink(const u8 *buf, } static int +CIFSFormatMFSymlink(u8 *buf, unsigned int buf_len, const char *link_str) +{ + unsigned int link_len; + unsigned int ofs; + struct MD5Context md5_ctx; + u8 md5_hash[16]; + + if (buf_len != CIFS_MF_SYMLINK_FILE_SIZE) + return -EINVAL; + + link_len = strlen(link_str); + + if (link_len > CIFS_MF_SYMLINK_LINK_MAXLEN) + return -ENAMETOOLONG; + + cifs_MD5_init(&md5_ctx); + cifs_MD5_update(&md5_ctx, (const u8 *)link_str, link_len); + cifs_MD5_final(md5_hash, &md5_ctx); + + snprintf(buf, buf_len, + CIFS_MF_SYMLINK_LEN_FORMAT CIFS_MF_SYMLINK_MD5_FORMAT, + link_len, + CIFS_MF_SYMLINK_MD5_ARGS(md5_hash)); + + ofs = CIFS_MF_SYMLINK_LINK_OFFSET; + memcpy(buf + ofs, link_str, link_len); + + ofs += link_len; + if (ofs < CIFS_MF_SYMLINK_FILE_SIZE) { + buf[ofs] = '\n'; + ofs++; + } + + while (ofs < CIFS_MF_SYMLINK_FILE_SIZE) { + buf[ofs] = ' '; + ofs++; + } + + return 0; +} + CIFSQueryMFSymLink(const int xid, struct cifsTconInfo *tcon, const unsigned char *searchName, char **symlinkinfo, const struct nls_table *nls_codepage, int remap) |