linux/fs/cifs/dns_resolve.h

/* SPDX-License-Identifier: LGPL-2.1 */
/*
 *   fs/cifs/dns_resolve.h -- DNS Resolver upcall management for CIFS DFS
 *                            Handles host name to IP address resolution
 *
 *   Copyright (c) International Business Machines  Corp., 2008
 *   Author(s): Steve French (sfrench@us.ibm.com)
 *
 */

#ifndef _DNS_RESOLVE_H
#define _DNS_RESOLVE_H

#ifdef __KERNEL__
extern int dns_resolve_server_name_to_ip(const char *unc, char **ip_addr, time64_t *expiry);
#endif /* KERNEL */

#endif /* _DNS_RESOLVE_H */
cifs: use SPDX-Licence-Identifier Add SPDX license identifier and replace license boilerplate. Corrects various checkpatch errors with the older format for noting the LGPL license. Signed-off-by: Steve French <stfrench@microsoft.com> 2021-06-18 13:31:49 +08:00			`/* SPDX-License-Identifier: LGPL-2.1 */`
[CIFS] Forgot to add two new files from previous commit Thanks to Igor for noticing this. CC: Igor Mammedov <niallain@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com> 2008-01-11 01:10:23 +08:00			`/*`
			`* fs/cifs/dns_resolve.h -- DNS Resolver upcall management for CIFS DFS`
			`* Handles host name to IP address resolution`
[CIFS] reduce checkpatch warnings Signed-off-by: Steve French <sfrench@us.ibm.com> 2008-02-08 07:25:02 +08:00			`*`
[CIFS] Forgot to add two new files from previous commit Thanks to Igor for noticing this. CC: Igor Mammedov <niallain@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com> 2008-01-11 01:10:23 +08:00			`* Copyright (c) International Business Machines Corp., 2008`
			`* Author(s): Steve French (sfrench@us.ibm.com)`
			`*`
			`*/`

			`#ifndef _DNS_RESOLVE_H`
			`#define _DNS_RESOLVE_H`

			`#ifdef __KERNEL__`
cifs: use the expiry output of dns_query to schedule next resolution We recently fixed DNS resolution of the server hostname during reconnect. However, server IP address may change, even when the old one continues to server (although sub-optimally). We should schedule the next DNS resolution based on the TTL of the DNS record used for the last resolution. This way, we resolve the server hostname again when a DNS record expires. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Cc: <stable@vger.kernel.org> # v5.11+ Signed-off-by: Steve French <stfrench@microsoft.com> 2021-05-18 23:05:50 +08:00			`extern int dns_resolve_server_name_to_ip(const char unc, char ip_addr, time64_t expiry);`
[CIFS] Forgot to add two new files from previous commit Thanks to Igor for noticing this. CC: Igor Mammedov <niallain@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com> 2008-01-11 01:10:23 +08:00			`#endif /* KERNEL */`

			`#endif /* _DNS_RESOLVE_H */`