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SUNRPC: Clean up: Replace dprintk and BUG_ON call sites in svcauth_gss.c

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Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2020-03-02 15:16:06 -05:00
parent 96f194b715
commit 28155524ea
2 changed files with 73 additions and 29 deletions
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59
include/trace/events/rpcgss.h
View File

@ -126,7 +126,7 @@ DEFINE_GSSAPI_EVENT(verify_mic);
DEFINE_GSSAPI_EVENT(wrap);
DEFINE_GSSAPI_EVENT(unwrap);
TRACE_EVENT(rpcgss_accept_upcall,
TRACE_EVENT(rpcgss_svc_accept_upcall,
TP_PROTO(
__be32 xid,
u32 major_status,
@ -154,6 +154,29 @@ TRACE_EVENT(rpcgss_accept_upcall,
)
);
TRACE_EVENT(rpcgss_svc_accept,
TP_PROTO(
__be32 xid,
size_t len
),
TP_ARGS(xid, len),
TP_STRUCT__entry(
__field(u32, xid)
__field(size_t, len)
),
TP_fast_assign(
__entry->xid = be32_to_cpu(xid);
__entry->len = len;
),
TP_printk("xid=0x%08x len=%zu",
__entry->xid, __entry->len
)
);
/**
** GSS auth unwrap failures
@ -268,6 +291,40 @@ TRACE_EVENT(rpcgss_need_reencode,
__entry->ret ? "" : "un")
);
DECLARE_EVENT_CLASS(rpcgss_svc_seqno_class,
TP_PROTO(
__be32 xid,
u32 seqno
),
TP_ARGS(xid, seqno),
TP_STRUCT__entry(
__field(u32, xid)
__field(u32, seqno)
),
TP_fast_assign(
__entry->xid = be32_to_cpu(xid);
__entry->seqno = seqno;
),
TP_printk("xid=0x%08x seqno=%u, request discarded",
__entry->xid, __entry->seqno)
);
#define DEFINE_SVC_SEQNO_EVENT(name) \
DEFINE_EVENT(rpcgss_svc_seqno_class, rpcgss_svc_##name, \
TP_PROTO( \
__be32 xid, \
u32 seqno \
), \
TP_ARGS(xid, seqno))
DEFINE_SVC_SEQNO_EVENT(large_seqno);
DEFINE_SVC_SEQNO_EVENT(old_seqno);
/**
** gssd upcall related trace events
**/

43
net/sunrpc/auth_gss/svcauth_gss.c
View File

@ -55,10 +55,6 @@
#include "gss_rpc_upcall.h"
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
# define RPCDBG_FACILITY RPCDBG_AUTH
#endif
/* The rpcsec_init cache is used for mapping RPCSEC_GSS_{,CONT_}INIT requests
* into replies.
*
@ -713,14 +709,12 @@ gss_verify_header(struct svc_rqst *rqstp, struct rsc *rsci,
}
if (gc->gc_seq > MAXSEQ) {
dprintk("RPC: svcauth_gss: discarding request with "
"large sequence number %d\n", gc->gc_seq);
trace_rpcgss_svc_large_seqno(rqstp->rq_xid, gc->gc_seq);
*authp = rpcsec_gsserr_ctxproblem;
return SVC_DENIED;
}
if (!gss_check_seq_num(rsci, gc->gc_seq)) {
dprintk("RPC: svcauth_gss: discarding request with "
"old sequence number %d\n", gc->gc_seq);
trace_rpcgss_svc_old_seqno(rqstp->rq_xid, gc->gc_seq);
return SVC_DROP;
}
return SVC_OK;
@ -1245,7 +1239,6 @@ static int gss_proxy_save_rsc(struct cache_detail *cd,
if (!ud->found_creds) {
/* userspace seem buggy, we should always get at least a
* mapping to nobody */
dprintk("RPC: No creds found!\n");
goto out;
} else {
struct timespec64 boot;
@ -1311,8 +1304,8 @@ static int svcauth_gss_proxy_init(struct svc_rqst *rqstp,
if (status)
goto out;
trace_rpcgss_accept_upcall(rqstp->rq_xid, ud.major_status,
ud.minor_status);
trace_rpcgss_svc_accept_upcall(rqstp->rq_xid, ud.major_status,
ud.minor_status);
switch (ud.major_status) {
case GSS_S_CONTINUE_NEEDED:
@ -1320,31 +1313,23 @@ static int svcauth_gss_proxy_init(struct svc_rqst *rqstp,
break;
case GSS_S_COMPLETE:
status = gss_proxy_save_rsc(sn->rsc_cache, &ud, &handle);
if (status) {
pr_info("%s: gss_proxy_save_rsc failed (%d)\n",
__func__, status);
if (status)
goto out;
}
cli_handle.data = (u8 *)&handle;
cli_handle.len = sizeof(handle);
break;
default:
ret = SVC_CLOSE;
goto out;
}
/* Got an answer to the upcall; use it: */
if (gss_write_init_verf(sn->rsc_cache, rqstp,
&cli_handle, &ud.major_status)) {
pr_info("%s: gss_write_init_verf failed\n", __func__);
&cli_handle, &ud.major_status))
goto out;
}
if (gss_write_resv(resv, PAGE_SIZE,
&cli_handle, &ud.out_token,
ud.major_status, ud.minor_status)) {
pr_info("%s: gss_write_resv failed\n", __func__);
ud.major_status, ud.minor_status))
goto out;
}
ret = SVC_COMPLETE;
out:
@ -1495,8 +1480,7 @@ svcauth_gss_accept(struct svc_rqst *rqstp, __be32 *authp)
int ret;
struct sunrpc_net *sn = net_generic(SVC_NET(rqstp), sunrpc_net_id);
dprintk("RPC: svcauth_gss: argv->iov_len = %zd\n",
argv->iov_len);
trace_rpcgss_svc_accept(rqstp->rq_xid, argv->iov_len);
*authp = rpc_autherr_badcred;
if (!svcdata)
@ -1705,7 +1689,8 @@ svcauth_gss_wrap_resp_integ(struct svc_rqst *rqstp)
resv->iov_len += XDR_QUADLEN(mic.len) << 2;
/* not strictly required: */
resbuf->len += XDR_QUADLEN(mic.len) << 2;
BUG_ON(resv->iov_len > PAGE_SIZE);
if (resv->iov_len > PAGE_SIZE)
goto out_err;
out:
stat = 0;
out_err:
@ -1741,9 +1726,11 @@ svcauth_gss_wrap_resp_priv(struct svc_rqst *rqstp)
* both the head and tail.
*/
if (resbuf->tail[0].iov_base) {
BUG_ON(resbuf->tail[0].iov_base >= resbuf->head[0].iov_base
+ PAGE_SIZE);
BUG_ON(resbuf->tail[0].iov_base < resbuf->head[0].iov_base);
if (resbuf->tail[0].iov_base >=
resbuf->head[0].iov_base + PAGE_SIZE)
return -EINVAL;
if (resbuf->tail[0].iov_base < resbuf->head[0].iov_base)
return -EINVAL;
if (resbuf->tail[0].iov_len + resbuf->head[0].iov_len
+ 2 * RPC_MAX_AUTH_SIZE > PAGE_SIZE)
return -ENOMEM;