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SUNRPC set gss gc_expiry to full lifetime 

Only use the default GSSD_MIN_TIMEOUT if the gss downcall timeout is zero.
Store the full lifetime in gc_expiry (not 3/4 of the lifetime) as subsequent
patches will use the gc_expiry to determine buffered WRITE behavior in the
face of expired or soon to be expired gss credentials.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Andy Adamson 2012-11-27 10:34:20 -05:00 committed by Trond Myklebust
parent be7e985804
commit 620038f6d2
1 changed files with 13 additions and 4 deletions
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17
net/sunrpc/auth_gss/auth_gss.c
View File

@ -192,17 +192,23 @@ gss_fill_context(const void *p, const void *end, struct gss_cl_ctx *ctx, struct
const void *q;
unsigned int seclen;
unsigned int timeout;
unsigned long now = jiffies;
u32 window_size;
int ret;
/* First unsigned int gives the lifetime (in seconds) of the cred */
/* First unsigned int gives the remaining lifetime in seconds of the
* credential - e.g. the remaining TGT lifetime for Kerberos or
* the -t value passed to GSSD.
*/
p = simple_get_bytes(p, end, &timeout, sizeof(timeout));
if (IS_ERR(p))
goto err;
if (timeout == 0)
timeout = GSSD_MIN_TIMEOUT;
ctx->gc_expiry = jiffies + (unsigned long)timeout * HZ * 3 / 4;
/* Sequence number window. Determines the maximum number of simultaneous requests */
ctx->gc_expiry = now + ((unsigned long)timeout * HZ);
/* Sequence number window. Determines the maximum number of
* simultaneous requests
*/
p = simple_get_bytes(p, end, &window_size, sizeof(window_size));
if (IS_ERR(p))
goto err;
@ -237,9 +243,12 @@ gss_fill_context(const void *p, const void *end, struct gss_cl_ctx *ctx, struct
p = ERR_PTR(ret);
goto err;
}
dprintk("RPC: %s Success. gc_expiry %lu now %lu timeout %u\n",
__func__, ctx->gc_expiry, now, timeout);
return q;
err:
dprintk("RPC: %s returning %ld\n", __func__, -PTR_ERR(p));
dprintk("RPC: %s returns %ld gc_expiry %lu now %lu timeout %u\n",
__func__, -PTR_ERR(p), ctx->gc_expiry, now, timeout);
return p;
}