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net: nfs: Simplify rpc_add_credentials()

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We use an empty hostname, so remove all the "processing" of the
known-to-be-empty hostname and just write 0's where needed.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Joe Hershberger 2016-08-15 15:03:27 -05:00
parent 998372b479
commit 1ff65d440d
1 changed files with 3 additions and 16 deletions
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19
net/nfs.c
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@ -142,13 +142,6 @@ RPC_ADD_CREDENTIALS - Add RPC authentication/verifier entries
**************************************************************************/ **************************************************************************/
static uint32_t *rpc_add_credentials(uint32_t *p) static uint32_t *rpc_add_credentials(uint32_t *p)
{ {
int hl;
int hostnamelen;
char hostname[256];
strcpy(hostname, "");
hostnamelen = strlen(hostname);
/* Here's the executive summary on authentication requirements of the /* Here's the executive summary on authentication requirements of the
* various NFS server implementations: Linux accepts both AUTH_NONE * various NFS server implementations: Linux accepts both AUTH_NONE
* and AUTH_UNIX authentication (also accepts an empty hostname field * and AUTH_UNIX authentication (also accepts an empty hostname field
@ -158,17 +151,11 @@ static uint32_t *rpc_add_credentials(uint32_t *p)
* it (if the BOOTP/DHCP reply didn't give one, just use an empty * it (if the BOOTP/DHCP reply didn't give one, just use an empty
* hostname). */ * hostname). */
hl = (hostnamelen + 3) & ~3;
/* Provide an AUTH_UNIX credential. */ /* Provide an AUTH_UNIX credential. */
*p++ = htonl(1); /* AUTH_UNIX */ *p++ = htonl(1); /* AUTH_UNIX */
*p++ = htonl(hl+20); /* auth length */ *p++ = htonl(20); /* auth length */
*p++ = htonl(0); /* stamp */ *p++ = 0; /* stamp */
*p++ = htonl(hostnamelen); /* hostname string */ *p++ = 0; /* hostname string */
if (hostnamelen & 3)
*(p + hostnamelen / 4) = 0; /* add zero padding */
memcpy(p, hostname, hostnamelen);
p += hl / 4;
*p++ = 0; /* uid */ *p++ = 0; /* uid */
*p++ = 0; /* gid */ *p++ = 0; /* gid */
*p++ = 0; /* auxiliary gid list */ *p++ = 0; /* auxiliary gid list */