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authorLinus Torvalds <torvalds@linux-foundation.org>2013-07-11 10:17:13 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-11 10:17:13 -0700
commit0ff08ba5d066619f9973bfcdb5a21320d54219d0 (patch)
tree526e4a5799eb3023e9d5d81e81c0964b1d928a3e /include
parentc72bb316916b1a6cf35e1d5238566ef27b0b7f80 (diff)
parentd109148111cdfcdae94f797dc142468bd0ff7557 (diff)
Merge branch 'for-3.11' of git://linux-nfs.org/~bfields/linux
Pull nfsd changes from Bruce Fields: "Changes this time include: - 4.1 enabled on the server by default: the last 4.1-specific issues I know of are fixed, so we're not going to find the rest of the bugs without more exposure. - Experimental support for NFSv4.2 MAC Labeling (to allow running selinux over NFS), from Dave Quigley. - Fixes for some delicate cache/upcall races that could cause rare server hangs; thanks to Neil Brown and Bodo Stroesser for extreme debugging persistence. - Fixes for some bugs found at the recent NFS bakeathon, mostly v4 and v4.1-specific, but also a generic bug handling fragmented rpc calls" * 'for-3.11' of git://linux-nfs.org/~bfields/linux: (31 commits) nfsd4: support minorversion 1 by default nfsd4: allow destroy_session over destroyed session svcrpc: fix failures to handle -1 uid's sunrpc: Don't schedule an upcall on a replaced cache entry. net/sunrpc: xpt_auth_cache should be ignored when expired. sunrpc/cache: ensure items removed from cache do not have pending upcalls. sunrpc/cache: use cache_fresh_unlocked consistently and correctly. sunrpc/cache: remove races with queuing an upcall. nfsd4: return delegation immediately if lease fails nfsd4: do not throw away 4.1 lock state on last unlock nfsd4: delegation-based open reclaims should bypass permissions svcrpc: don't error out on small tcp fragment svcrpc: fix handling of too-short rpc's nfsd4: minor read_buf cleanup nfsd4: fix decoding of compounds across page boundaries nfsd4: clean up nfs4_open_delegation NFSD: Don't give out read delegations on creates nfsd4: allow client to send no cb_sec flavors nfsd4: fail attempts to request gss on the backchannel nfsd4: implement minimal SP4_MACH_CRED ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/sunrpc/cache.h49
-rw-r--r--include/linux/sunrpc/gss_api.h2
-rw-r--r--include/linux/sunrpc/svcauth.h11
3 files changed, 35 insertions, 27 deletions
diff --git a/include/linux/sunrpc/cache.h b/include/linux/sunrpc/cache.h
index 303399b1ba5..6ce690de447 100644
--- a/include/linux/sunrpc/cache.h
+++ b/include/linux/sunrpc/cache.h
@@ -57,6 +57,7 @@ struct cache_head {
#define CACHE_VALID 0 /* Entry contains valid data */
#define CACHE_NEGATIVE 1 /* Negative entry - there is no match for the key */
#define CACHE_PENDING 2 /* An upcall has been sent but no reply received yet*/
+#define CACHE_CLEANED 3 /* Entry has been cleaned from cache */
#define CACHE_NEW_EXPIRY 120 /* keep new things pending confirmation for 120 seconds */
@@ -148,6 +149,24 @@ struct cache_deferred_req {
int too_many);
};
+/*
+ * timestamps kept in the cache are expressed in seconds
+ * since boot. This is the best for measuring differences in
+ * real time.
+ */
+static inline time_t seconds_since_boot(void)
+{
+ struct timespec boot;
+ getboottime(&boot);
+ return get_seconds() - boot.tv_sec;
+}
+
+static inline time_t convert_to_wallclock(time_t sinceboot)
+{
+ struct timespec boot;
+ getboottime(&boot);
+ return boot.tv_sec + sinceboot;
+}
extern const struct file_operations cache_file_operations_pipefs;
extern const struct file_operations content_file_operations_pipefs;
@@ -181,15 +200,10 @@ static inline void cache_put(struct cache_head *h, struct cache_detail *cd)
kref_put(&h->ref, cd->cache_put);
}
-static inline int cache_valid(struct cache_head *h)
+static inline int cache_is_expired(struct cache_detail *detail, struct cache_head *h)
{
- /* If an item has been unhashed pending removal when
- * the refcount drops to 0, the expiry_time will be
- * set to 0. We don't want to consider such items
- * valid in this context even though CACHE_VALID is
- * set.
- */
- return (h->expiry_time != 0 && test_bit(CACHE_VALID, &h->flags));
+ return (h->expiry_time < seconds_since_boot()) ||
+ (detail->flush_time > h->last_refresh);
}
extern int cache_check(struct cache_detail *detail,
@@ -250,25 +264,6 @@ static inline int get_uint(char **bpp, unsigned int *anint)
return 0;
}
-/*
- * timestamps kept in the cache are expressed in seconds
- * since boot. This is the best for measuring differences in
- * real time.
- */
-static inline time_t seconds_since_boot(void)
-{
- struct timespec boot;
- getboottime(&boot);
- return get_seconds() - boot.tv_sec;
-}
-
-static inline time_t convert_to_wallclock(time_t sinceboot)
-{
- struct timespec boot;
- getboottime(&boot);
- return boot.tv_sec + sinceboot;
-}
-
static inline time_t get_expiry(char **bpp)
{
int rv;
diff --git a/include/linux/sunrpc/gss_api.h b/include/linux/sunrpc/gss_api.h
index 161463e5962..1f911ccb2a7 100644
--- a/include/linux/sunrpc/gss_api.h
+++ b/include/linux/sunrpc/gss_api.h
@@ -151,6 +151,8 @@ struct gss_api_mech *gss_mech_get_by_pseudoflavor(u32);
/* Fill in an array with a list of supported pseudoflavors */
int gss_mech_list_pseudoflavors(rpc_authflavor_t *, int);
+struct gss_api_mech * gss_mech_get(struct gss_api_mech *);
+
/* For every successful gss_mech_get or gss_mech_get_by_* call there must be a
* corresponding call to gss_mech_put. */
void gss_mech_put(struct gss_api_mech *);
diff --git a/include/linux/sunrpc/svcauth.h b/include/linux/sunrpc/svcauth.h
index ff374ab3083..8d71d657745 100644
--- a/include/linux/sunrpc/svcauth.h
+++ b/include/linux/sunrpc/svcauth.h
@@ -14,6 +14,7 @@
#include <linux/string.h>
#include <linux/sunrpc/msg_prot.h>
#include <linux/sunrpc/cache.h>
+#include <linux/sunrpc/gss_api.h>
#include <linux/hash.h>
#include <linux/cred.h>
@@ -23,13 +24,23 @@ struct svc_cred {
struct group_info *cr_group_info;
u32 cr_flavor; /* pseudoflavor */
char *cr_principal; /* for gss */
+ struct gss_api_mech *cr_gss_mech;
};
+static inline void init_svc_cred(struct svc_cred *cred)
+{
+ cred->cr_group_info = NULL;
+ cred->cr_principal = NULL;
+ cred->cr_gss_mech = NULL;
+}
+
static inline void free_svc_cred(struct svc_cred *cred)
{
if (cred->cr_group_info)
put_group_info(cred->cr_group_info);
kfree(cred->cr_principal);
+ gss_mech_put(cred->cr_gss_mech);
+ init_svc_cred(cred);
}
struct svc_rqst; /* forward decl */