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Commit 8713d01d authored by Stefan Metzmacher's avatar Stefan Metzmacher Committed by Steve French
Browse files

cifs: implement CIFSCreateMFSymLink() 



Signed-off-by: default avatarStefan Metzmacher <metze@samba.org>
Signed-off-by: default avatarSteve French <sfrench@us.ibm.com>
parent 18bddd10

fs/cifs/link.c

+45 −0
Original line number Diff line number Diff line
@@ -133,6 +133,51 @@ CIFSFormatMFSymlink(u8 *buf, unsigned int buf_len, const char *link_str) 
	return 0;

}



static int

CIFSCreateMFSymLink(const int xid, struct cifsTconInfo *tcon,

		    const char *fromName, const char *toName,

		    const struct nls_table *nls_codepage, int remap)

{

	int rc;

	int oplock = 0;

	__u16 netfid = 0;

	u8 *buf;

	unsigned int bytes_written = 0;



	buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL);

	if (!buf)

		return -ENOMEM;



	rc = CIFSFormatMFSymlink(buf, CIFS_MF_SYMLINK_FILE_SIZE, toName);

	if (rc != 0) {

		kfree(buf);

		return rc;

	}



	rc = CIFSSMBOpen(xid, tcon, fromName, FILE_CREATE, GENERIC_WRITE,

			 CREATE_NOT_DIR, &netfid, &oplock, NULL,

			 nls_codepage, remap);

	if (rc != 0) {

		kfree(buf);

		return rc;

	}



	rc = CIFSSMBWrite(xid, tcon, netfid,

			  CIFS_MF_SYMLINK_FILE_SIZE /* length */,

			  0 /* offset */,

			  &bytes_written, buf, NULL, 0);

	CIFSSMBClose(xid, tcon, netfid);

	kfree(buf);

	if (rc != 0)

		return rc;



	if (bytes_written != CIFS_MF_SYMLINK_FILE_SIZE)

		return -EIO;



	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)