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NFSD: Support IPv6 addresses in write_failover_ip()

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In write_failover_ip(), replace the sscanf() with a call to the common
sunrpc.ko presentation address parser.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Chuck Lever 2009-08-09 15:09:40 -04:00 committed by Trond Myklebust
parent c15128c5e4
commit 4116092b92
1 changed files with 7 additions and 14 deletions
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21
fs/nfsd/nfsctl.c
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@ -37,6 +37,7 @@
#include <linux/nfsd/xdr.h>
#include <linux/nfsd/syscall.h>
#include <linux/lockd/lockd.h>
#include <linux/sunrpc/clnt.h>
#include <asm/uaccess.h>
#include <net/ipv6.h>
@ -490,22 +491,18 @@ static ssize_t write_getfd(struct file *file, char *buf, size_t size)
*
* Input:
* buf: '\n'-terminated C string containing a
* presentation format IPv4 address
* presentation format IP address
* size: length of C string in @buf
* Output:
* On success: returns zero if all specified locks were released;
* returns one if one or more locks were not released
* On error: return code is negative errno value
*
* Note: Only AF_INET client addresses are passed in
*/
static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size)
{
struct sockaddr_in sin = {
.sin_family = AF_INET,
};
int b1, b2, b3, b4;
char c;
struct sockaddr_storage address;
struct sockaddr *sap = (struct sockaddr *)&address;
size_t salen = sizeof(address);
char *fo_path;
/* sanity check */
@ -519,14 +516,10 @@ static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size)
if (qword_get(&buf, fo_path, size) < 0)
return -EINVAL;
/* get ipv4 address */
if (sscanf(fo_path, "%u.%u.%u.%u%c", &b1, &b2, &b3, &b4, &c) != 4)
if (rpc_pton(fo_path, size, sap, salen) == 0)
return -EINVAL;
if (b1 > 255 || b2 > 255 || b3 > 255 || b4 > 255)
return -EINVAL;
sin.sin_addr.s_addr = htonl((b1 << 24) | (b2 << 16) | (b3 << 8) | b4);
return nlmsvc_unlock_all_by_ip((struct sockaddr *)&sin);
return nlmsvc_unlock_all_by_ip(sap);
}
/**