11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * linux/net/sunrpc/auth.c 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Generic RPC client authentication API. 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de> 71da177e4SLinus Torvalds */ 81da177e4SLinus Torvalds 91da177e4SLinus Torvalds #include <linux/types.h> 101da177e4SLinus Torvalds #include <linux/sched.h> 111da177e4SLinus Torvalds #include <linux/module.h> 121da177e4SLinus Torvalds #include <linux/slab.h> 131da177e4SLinus Torvalds #include <linux/errno.h> 141da177e4SLinus Torvalds #include <linux/socket.h> 151da177e4SLinus Torvalds #include <linux/sunrpc/clnt.h> 161da177e4SLinus Torvalds #include <linux/spinlock.h> 171da177e4SLinus Torvalds 181da177e4SLinus Torvalds #ifdef RPC_DEBUG 191da177e4SLinus Torvalds # define RPCDBG_FACILITY RPCDBG_AUTH 201da177e4SLinus Torvalds #endif 211da177e4SLinus Torvalds 221da177e4SLinus Torvalds static struct rpc_authops * auth_flavors[RPC_AUTH_MAXFLAVOR] = { 231da177e4SLinus Torvalds &authnull_ops, /* AUTH_NULL */ 241da177e4SLinus Torvalds &authunix_ops, /* AUTH_UNIX */ 251da177e4SLinus Torvalds NULL, /* others can be loadable modules */ 261da177e4SLinus Torvalds }; 271da177e4SLinus Torvalds 281da177e4SLinus Torvalds static u32 291da177e4SLinus Torvalds pseudoflavor_to_flavor(u32 flavor) { 301da177e4SLinus Torvalds if (flavor >= RPC_AUTH_MAXFLAVOR) 311da177e4SLinus Torvalds return RPC_AUTH_GSS; 321da177e4SLinus Torvalds return flavor; 331da177e4SLinus Torvalds } 341da177e4SLinus Torvalds 351da177e4SLinus Torvalds int 361da177e4SLinus Torvalds rpcauth_register(struct rpc_authops *ops) 371da177e4SLinus Torvalds { 381da177e4SLinus Torvalds rpc_authflavor_t flavor; 391da177e4SLinus Torvalds 401da177e4SLinus Torvalds if ((flavor = ops->au_flavor) >= RPC_AUTH_MAXFLAVOR) 411da177e4SLinus Torvalds return -EINVAL; 421da177e4SLinus Torvalds if (auth_flavors[flavor] != NULL) 431da177e4SLinus Torvalds return -EPERM; /* what else? */ 441da177e4SLinus Torvalds auth_flavors[flavor] = ops; 451da177e4SLinus Torvalds return 0; 461da177e4SLinus Torvalds } 471da177e4SLinus Torvalds 481da177e4SLinus Torvalds int 491da177e4SLinus Torvalds rpcauth_unregister(struct rpc_authops *ops) 501da177e4SLinus Torvalds { 511da177e4SLinus Torvalds rpc_authflavor_t flavor; 521da177e4SLinus Torvalds 531da177e4SLinus Torvalds if ((flavor = ops->au_flavor) >= RPC_AUTH_MAXFLAVOR) 541da177e4SLinus Torvalds return -EINVAL; 551da177e4SLinus Torvalds if (auth_flavors[flavor] != ops) 561da177e4SLinus Torvalds return -EPERM; /* what else? */ 571da177e4SLinus Torvalds auth_flavors[flavor] = NULL; 581da177e4SLinus Torvalds return 0; 591da177e4SLinus Torvalds } 601da177e4SLinus Torvalds 611da177e4SLinus Torvalds struct rpc_auth * 621da177e4SLinus Torvalds rpcauth_create(rpc_authflavor_t pseudoflavor, struct rpc_clnt *clnt) 631da177e4SLinus Torvalds { 641da177e4SLinus Torvalds struct rpc_auth *auth; 651da177e4SLinus Torvalds struct rpc_authops *ops; 661da177e4SLinus Torvalds u32 flavor = pseudoflavor_to_flavor(pseudoflavor); 671da177e4SLinus Torvalds 681da177e4SLinus Torvalds if (flavor >= RPC_AUTH_MAXFLAVOR || !(ops = auth_flavors[flavor])) 691da177e4SLinus Torvalds return NULL; 701da177e4SLinus Torvalds auth = ops->create(clnt, pseudoflavor); 711da177e4SLinus Torvalds if (!auth) 721da177e4SLinus Torvalds return NULL; 731da177e4SLinus Torvalds if (clnt->cl_auth) 741da177e4SLinus Torvalds rpcauth_destroy(clnt->cl_auth); 751da177e4SLinus Torvalds clnt->cl_auth = auth; 761da177e4SLinus Torvalds return auth; 771da177e4SLinus Torvalds } 781da177e4SLinus Torvalds 791da177e4SLinus Torvalds void 801da177e4SLinus Torvalds rpcauth_destroy(struct rpc_auth *auth) 811da177e4SLinus Torvalds { 821da177e4SLinus Torvalds if (!atomic_dec_and_test(&auth->au_count)) 831da177e4SLinus Torvalds return; 841da177e4SLinus Torvalds auth->au_ops->destroy(auth); 851da177e4SLinus Torvalds } 861da177e4SLinus Torvalds 871da177e4SLinus Torvalds static DEFINE_SPINLOCK(rpc_credcache_lock); 881da177e4SLinus Torvalds 891da177e4SLinus Torvalds /* 901da177e4SLinus Torvalds * Initialize RPC credential cache 911da177e4SLinus Torvalds */ 921da177e4SLinus Torvalds int 931da177e4SLinus Torvalds rpcauth_init_credcache(struct rpc_auth *auth, unsigned long expire) 941da177e4SLinus Torvalds { 951da177e4SLinus Torvalds struct rpc_cred_cache *new; 961da177e4SLinus Torvalds int i; 971da177e4SLinus Torvalds 981da177e4SLinus Torvalds new = (struct rpc_cred_cache *)kmalloc(sizeof(*new), GFP_KERNEL); 991da177e4SLinus Torvalds if (!new) 1001da177e4SLinus Torvalds return -ENOMEM; 1011da177e4SLinus Torvalds for (i = 0; i < RPC_CREDCACHE_NR; i++) 1021da177e4SLinus Torvalds INIT_HLIST_HEAD(&new->hashtable[i]); 1031da177e4SLinus Torvalds new->expire = expire; 1041da177e4SLinus Torvalds new->nextgc = jiffies + (expire >> 1); 1051da177e4SLinus Torvalds auth->au_credcache = new; 1061da177e4SLinus Torvalds return 0; 1071da177e4SLinus Torvalds } 1081da177e4SLinus Torvalds 1091da177e4SLinus Torvalds /* 1101da177e4SLinus Torvalds * Destroy a list of credentials 1111da177e4SLinus Torvalds */ 1121da177e4SLinus Torvalds static inline 1131da177e4SLinus Torvalds void rpcauth_destroy_credlist(struct hlist_head *head) 1141da177e4SLinus Torvalds { 1151da177e4SLinus Torvalds struct rpc_cred *cred; 1161da177e4SLinus Torvalds 1171da177e4SLinus Torvalds while (!hlist_empty(head)) { 1181da177e4SLinus Torvalds cred = hlist_entry(head->first, struct rpc_cred, cr_hash); 1191da177e4SLinus Torvalds hlist_del_init(&cred->cr_hash); 1201da177e4SLinus Torvalds put_rpccred(cred); 1211da177e4SLinus Torvalds } 1221da177e4SLinus Torvalds } 1231da177e4SLinus Torvalds 1241da177e4SLinus Torvalds /* 1251da177e4SLinus Torvalds * Clear the RPC credential cache, and delete those credentials 1261da177e4SLinus Torvalds * that are not referenced. 1271da177e4SLinus Torvalds */ 1281da177e4SLinus Torvalds void 1291da177e4SLinus Torvalds rpcauth_free_credcache(struct rpc_auth *auth) 1301da177e4SLinus Torvalds { 1311da177e4SLinus Torvalds struct rpc_cred_cache *cache = auth->au_credcache; 1321da177e4SLinus Torvalds HLIST_HEAD(free); 1331da177e4SLinus Torvalds struct hlist_node *pos, *next; 1341da177e4SLinus Torvalds struct rpc_cred *cred; 1351da177e4SLinus Torvalds int i; 1361da177e4SLinus Torvalds 1371da177e4SLinus Torvalds spin_lock(&rpc_credcache_lock); 1381da177e4SLinus Torvalds for (i = 0; i < RPC_CREDCACHE_NR; i++) { 1391da177e4SLinus Torvalds hlist_for_each_safe(pos, next, &cache->hashtable[i]) { 1401da177e4SLinus Torvalds cred = hlist_entry(pos, struct rpc_cred, cr_hash); 1411da177e4SLinus Torvalds __hlist_del(&cred->cr_hash); 1421da177e4SLinus Torvalds hlist_add_head(&cred->cr_hash, &free); 1431da177e4SLinus Torvalds } 1441da177e4SLinus Torvalds } 1451da177e4SLinus Torvalds spin_unlock(&rpc_credcache_lock); 1461da177e4SLinus Torvalds rpcauth_destroy_credlist(&free); 1471da177e4SLinus Torvalds } 1481da177e4SLinus Torvalds 1491da177e4SLinus Torvalds static void 1501da177e4SLinus Torvalds rpcauth_prune_expired(struct rpc_auth *auth, struct rpc_cred *cred, struct hlist_head *free) 1511da177e4SLinus Torvalds { 1521da177e4SLinus Torvalds if (atomic_read(&cred->cr_count) != 1) 1531da177e4SLinus Torvalds return; 1541da177e4SLinus Torvalds if (time_after(jiffies, cred->cr_expire + auth->au_credcache->expire)) 1551da177e4SLinus Torvalds cred->cr_flags &= ~RPCAUTH_CRED_UPTODATE; 1561da177e4SLinus Torvalds if (!(cred->cr_flags & RPCAUTH_CRED_UPTODATE)) { 1571da177e4SLinus Torvalds __hlist_del(&cred->cr_hash); 1581da177e4SLinus Torvalds hlist_add_head(&cred->cr_hash, free); 1591da177e4SLinus Torvalds } 1601da177e4SLinus Torvalds } 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds /* 1631da177e4SLinus Torvalds * Remove stale credentials. Avoid sleeping inside the loop. 1641da177e4SLinus Torvalds */ 1651da177e4SLinus Torvalds static void 1661da177e4SLinus Torvalds rpcauth_gc_credcache(struct rpc_auth *auth, struct hlist_head *free) 1671da177e4SLinus Torvalds { 1681da177e4SLinus Torvalds struct rpc_cred_cache *cache = auth->au_credcache; 1691da177e4SLinus Torvalds struct hlist_node *pos, *next; 1701da177e4SLinus Torvalds struct rpc_cred *cred; 1711da177e4SLinus Torvalds int i; 1721da177e4SLinus Torvalds 1731da177e4SLinus Torvalds dprintk("RPC: gc'ing RPC credentials for auth %p\n", auth); 1741da177e4SLinus Torvalds for (i = 0; i < RPC_CREDCACHE_NR; i++) { 1751da177e4SLinus Torvalds hlist_for_each_safe(pos, next, &cache->hashtable[i]) { 1761da177e4SLinus Torvalds cred = hlist_entry(pos, struct rpc_cred, cr_hash); 1771da177e4SLinus Torvalds rpcauth_prune_expired(auth, cred, free); 1781da177e4SLinus Torvalds } 1791da177e4SLinus Torvalds } 1801da177e4SLinus Torvalds cache->nextgc = jiffies + cache->expire; 1811da177e4SLinus Torvalds } 1821da177e4SLinus Torvalds 1831da177e4SLinus Torvalds /* 1841da177e4SLinus Torvalds * Look up a process' credentials in the authentication cache 1851da177e4SLinus Torvalds */ 1861da177e4SLinus Torvalds struct rpc_cred * 1871da177e4SLinus Torvalds rpcauth_lookup_credcache(struct rpc_auth *auth, struct auth_cred * acred, 1881da177e4SLinus Torvalds int taskflags) 1891da177e4SLinus Torvalds { 1901da177e4SLinus Torvalds struct rpc_cred_cache *cache = auth->au_credcache; 1911da177e4SLinus Torvalds HLIST_HEAD(free); 1921da177e4SLinus Torvalds struct hlist_node *pos, *next; 1931da177e4SLinus Torvalds struct rpc_cred *new = NULL, 1941da177e4SLinus Torvalds *cred = NULL; 1951da177e4SLinus Torvalds int nr = 0; 1961da177e4SLinus Torvalds 1971da177e4SLinus Torvalds if (!(taskflags & RPC_TASK_ROOTCREDS)) 1981da177e4SLinus Torvalds nr = acred->uid & RPC_CREDCACHE_MASK; 1991da177e4SLinus Torvalds retry: 2001da177e4SLinus Torvalds spin_lock(&rpc_credcache_lock); 2011da177e4SLinus Torvalds if (time_before(cache->nextgc, jiffies)) 2021da177e4SLinus Torvalds rpcauth_gc_credcache(auth, &free); 2031da177e4SLinus Torvalds hlist_for_each_safe(pos, next, &cache->hashtable[nr]) { 2041da177e4SLinus Torvalds struct rpc_cred *entry; 2051da177e4SLinus Torvalds entry = hlist_entry(pos, struct rpc_cred, cr_hash); 2061da177e4SLinus Torvalds if (entry->cr_ops->crmatch(acred, entry, taskflags)) { 2071da177e4SLinus Torvalds hlist_del(&entry->cr_hash); 2081da177e4SLinus Torvalds cred = entry; 2091da177e4SLinus Torvalds break; 2101da177e4SLinus Torvalds } 2111da177e4SLinus Torvalds rpcauth_prune_expired(auth, entry, &free); 2121da177e4SLinus Torvalds } 2131da177e4SLinus Torvalds if (new) { 2141da177e4SLinus Torvalds if (cred) 2151da177e4SLinus Torvalds hlist_add_head(&new->cr_hash, &free); 2161da177e4SLinus Torvalds else 2171da177e4SLinus Torvalds cred = new; 2181da177e4SLinus Torvalds } 2191da177e4SLinus Torvalds if (cred) { 2201da177e4SLinus Torvalds hlist_add_head(&cred->cr_hash, &cache->hashtable[nr]); 2211da177e4SLinus Torvalds get_rpccred(cred); 2221da177e4SLinus Torvalds } 2231da177e4SLinus Torvalds spin_unlock(&rpc_credcache_lock); 2241da177e4SLinus Torvalds 2251da177e4SLinus Torvalds rpcauth_destroy_credlist(&free); 2261da177e4SLinus Torvalds 2271da177e4SLinus Torvalds if (!cred) { 2281da177e4SLinus Torvalds new = auth->au_ops->crcreate(auth, acred, taskflags); 2291da177e4SLinus Torvalds if (!IS_ERR(new)) { 2301da177e4SLinus Torvalds #ifdef RPC_DEBUG 2311da177e4SLinus Torvalds new->cr_magic = RPCAUTH_CRED_MAGIC; 2321da177e4SLinus Torvalds #endif 2331da177e4SLinus Torvalds goto retry; 2341da177e4SLinus Torvalds } else 2351da177e4SLinus Torvalds cred = new; 2361da177e4SLinus Torvalds } 2371da177e4SLinus Torvalds 2381da177e4SLinus Torvalds return (struct rpc_cred *) cred; 2391da177e4SLinus Torvalds } 2401da177e4SLinus Torvalds 2411da177e4SLinus Torvalds struct rpc_cred * 2421da177e4SLinus Torvalds rpcauth_lookupcred(struct rpc_auth *auth, int taskflags) 2431da177e4SLinus Torvalds { 2441da177e4SLinus Torvalds struct auth_cred acred = { 2451da177e4SLinus Torvalds .uid = current->fsuid, 2461da177e4SLinus Torvalds .gid = current->fsgid, 2471da177e4SLinus Torvalds .group_info = current->group_info, 2481da177e4SLinus Torvalds }; 2491da177e4SLinus Torvalds struct rpc_cred *ret; 2501da177e4SLinus Torvalds 2511da177e4SLinus Torvalds dprintk("RPC: looking up %s cred\n", 2521da177e4SLinus Torvalds auth->au_ops->au_name); 2531da177e4SLinus Torvalds get_group_info(acred.group_info); 2541da177e4SLinus Torvalds ret = auth->au_ops->lookup_cred(auth, &acred, taskflags); 2551da177e4SLinus Torvalds put_group_info(acred.group_info); 2561da177e4SLinus Torvalds return ret; 2571da177e4SLinus Torvalds } 2581da177e4SLinus Torvalds 2591da177e4SLinus Torvalds struct rpc_cred * 2601da177e4SLinus Torvalds rpcauth_bindcred(struct rpc_task *task) 2611da177e4SLinus Torvalds { 2621da177e4SLinus Torvalds struct rpc_auth *auth = task->tk_auth; 2631da177e4SLinus Torvalds struct auth_cred acred = { 2641da177e4SLinus Torvalds .uid = current->fsuid, 2651da177e4SLinus Torvalds .gid = current->fsgid, 2661da177e4SLinus Torvalds .group_info = current->group_info, 2671da177e4SLinus Torvalds }; 2681da177e4SLinus Torvalds struct rpc_cred *ret; 2691da177e4SLinus Torvalds 2701da177e4SLinus Torvalds dprintk("RPC: %4d looking up %s cred\n", 2711da177e4SLinus Torvalds task->tk_pid, task->tk_auth->au_ops->au_name); 2721da177e4SLinus Torvalds get_group_info(acred.group_info); 2731da177e4SLinus Torvalds ret = auth->au_ops->lookup_cred(auth, &acred, task->tk_flags); 2741da177e4SLinus Torvalds if (!IS_ERR(ret)) 2751da177e4SLinus Torvalds task->tk_msg.rpc_cred = ret; 2761da177e4SLinus Torvalds else 2771da177e4SLinus Torvalds task->tk_status = PTR_ERR(ret); 2781da177e4SLinus Torvalds put_group_info(acred.group_info); 2791da177e4SLinus Torvalds return ret; 2801da177e4SLinus Torvalds } 2811da177e4SLinus Torvalds 2821da177e4SLinus Torvalds void 2831da177e4SLinus Torvalds rpcauth_holdcred(struct rpc_task *task) 2841da177e4SLinus Torvalds { 2851da177e4SLinus Torvalds dprintk("RPC: %4d holding %s cred %p\n", 2861da177e4SLinus Torvalds task->tk_pid, task->tk_auth->au_ops->au_name, task->tk_msg.rpc_cred); 2871da177e4SLinus Torvalds if (task->tk_msg.rpc_cred) 2881da177e4SLinus Torvalds get_rpccred(task->tk_msg.rpc_cred); 2891da177e4SLinus Torvalds } 2901da177e4SLinus Torvalds 2911da177e4SLinus Torvalds void 2921da177e4SLinus Torvalds put_rpccred(struct rpc_cred *cred) 2931da177e4SLinus Torvalds { 2941da177e4SLinus Torvalds cred->cr_expire = jiffies; 2951da177e4SLinus Torvalds if (!atomic_dec_and_test(&cred->cr_count)) 2961da177e4SLinus Torvalds return; 2971da177e4SLinus Torvalds cred->cr_ops->crdestroy(cred); 2981da177e4SLinus Torvalds } 2991da177e4SLinus Torvalds 3001da177e4SLinus Torvalds void 3011da177e4SLinus Torvalds rpcauth_unbindcred(struct rpc_task *task) 3021da177e4SLinus Torvalds { 3031da177e4SLinus Torvalds struct rpc_auth *auth = task->tk_auth; 3041da177e4SLinus Torvalds struct rpc_cred *cred = task->tk_msg.rpc_cred; 3051da177e4SLinus Torvalds 3061da177e4SLinus Torvalds dprintk("RPC: %4d releasing %s cred %p\n", 3071da177e4SLinus Torvalds task->tk_pid, auth->au_ops->au_name, cred); 3081da177e4SLinus Torvalds 3091da177e4SLinus Torvalds put_rpccred(cred); 3101da177e4SLinus Torvalds task->tk_msg.rpc_cred = NULL; 3111da177e4SLinus Torvalds } 3121da177e4SLinus Torvalds 3131da177e4SLinus Torvalds u32 * 3141da177e4SLinus Torvalds rpcauth_marshcred(struct rpc_task *task, u32 *p) 3151da177e4SLinus Torvalds { 3161da177e4SLinus Torvalds struct rpc_auth *auth = task->tk_auth; 3171da177e4SLinus Torvalds struct rpc_cred *cred = task->tk_msg.rpc_cred; 3181da177e4SLinus Torvalds 3191da177e4SLinus Torvalds dprintk("RPC: %4d marshaling %s cred %p\n", 3201da177e4SLinus Torvalds task->tk_pid, auth->au_ops->au_name, cred); 3211da177e4SLinus Torvalds return cred->cr_ops->crmarshal(task, p); 3221da177e4SLinus Torvalds } 3231da177e4SLinus Torvalds 3241da177e4SLinus Torvalds u32 * 3251da177e4SLinus Torvalds rpcauth_checkverf(struct rpc_task *task, u32 *p) 3261da177e4SLinus Torvalds { 3271da177e4SLinus Torvalds struct rpc_auth *auth = task->tk_auth; 3281da177e4SLinus Torvalds struct rpc_cred *cred = task->tk_msg.rpc_cred; 3291da177e4SLinus Torvalds 3301da177e4SLinus Torvalds dprintk("RPC: %4d validating %s cred %p\n", 3311da177e4SLinus Torvalds task->tk_pid, auth->au_ops->au_name, cred); 3321da177e4SLinus Torvalds return cred->cr_ops->crvalidate(task, p); 3331da177e4SLinus Torvalds } 3341da177e4SLinus Torvalds 3351da177e4SLinus Torvalds int 3361da177e4SLinus Torvalds rpcauth_wrap_req(struct rpc_task *task, kxdrproc_t encode, void *rqstp, 3371da177e4SLinus Torvalds u32 *data, void *obj) 3381da177e4SLinus Torvalds { 3391da177e4SLinus Torvalds struct rpc_cred *cred = task->tk_msg.rpc_cred; 3401da177e4SLinus Torvalds 3411da177e4SLinus Torvalds dprintk("RPC: %4d using %s cred %p to wrap rpc data\n", 3421da177e4SLinus Torvalds task->tk_pid, cred->cr_ops->cr_name, cred); 3431da177e4SLinus Torvalds if (cred->cr_ops->crwrap_req) 3441da177e4SLinus Torvalds return cred->cr_ops->crwrap_req(task, encode, rqstp, data, obj); 3451da177e4SLinus Torvalds /* By default, we encode the arguments normally. */ 3461da177e4SLinus Torvalds return encode(rqstp, data, obj); 3471da177e4SLinus Torvalds } 3481da177e4SLinus Torvalds 3491da177e4SLinus Torvalds int 3501da177e4SLinus Torvalds rpcauth_unwrap_resp(struct rpc_task *task, kxdrproc_t decode, void *rqstp, 3511da177e4SLinus Torvalds u32 *data, void *obj) 3521da177e4SLinus Torvalds { 3531da177e4SLinus Torvalds struct rpc_cred *cred = task->tk_msg.rpc_cred; 3541da177e4SLinus Torvalds 3551da177e4SLinus Torvalds dprintk("RPC: %4d using %s cred %p to unwrap rpc data\n", 3561da177e4SLinus Torvalds task->tk_pid, cred->cr_ops->cr_name, cred); 3571da177e4SLinus Torvalds if (cred->cr_ops->crunwrap_resp) 3581da177e4SLinus Torvalds return cred->cr_ops->crunwrap_resp(task, decode, rqstp, 3591da177e4SLinus Torvalds data, obj); 3601da177e4SLinus Torvalds /* By default, we decode the arguments normally. */ 3611da177e4SLinus Torvalds return decode(rqstp, data, obj); 3621da177e4SLinus Torvalds } 3631da177e4SLinus Torvalds 3641da177e4SLinus Torvalds int 3651da177e4SLinus Torvalds rpcauth_refreshcred(struct rpc_task *task) 3661da177e4SLinus Torvalds { 3671da177e4SLinus Torvalds struct rpc_auth *auth = task->tk_auth; 3681da177e4SLinus Torvalds struct rpc_cred *cred = task->tk_msg.rpc_cred; 3691da177e4SLinus Torvalds int err; 3701da177e4SLinus Torvalds 3711da177e4SLinus Torvalds dprintk("RPC: %4d refreshing %s cred %p\n", 3721da177e4SLinus Torvalds task->tk_pid, auth->au_ops->au_name, cred); 3731da177e4SLinus Torvalds err = cred->cr_ops->crrefresh(task); 3741da177e4SLinus Torvalds if (err < 0) 3751da177e4SLinus Torvalds task->tk_status = err; 3761da177e4SLinus Torvalds return err; 3771da177e4SLinus Torvalds } 3781da177e4SLinus Torvalds 3791da177e4SLinus Torvalds void 3801da177e4SLinus Torvalds rpcauth_invalcred(struct rpc_task *task) 3811da177e4SLinus Torvalds { 3821da177e4SLinus Torvalds dprintk("RPC: %4d invalidating %s cred %p\n", 3831da177e4SLinus Torvalds task->tk_pid, task->tk_auth->au_ops->au_name, task->tk_msg.rpc_cred); 3841da177e4SLinus Torvalds spin_lock(&rpc_credcache_lock); 3851da177e4SLinus Torvalds if (task->tk_msg.rpc_cred) 3861da177e4SLinus Torvalds task->tk_msg.rpc_cred->cr_flags &= ~RPCAUTH_CRED_UPTODATE; 3871da177e4SLinus Torvalds spin_unlock(&rpc_credcache_lock); 3881da177e4SLinus Torvalds } 3891da177e4SLinus Torvalds 3901da177e4SLinus Torvalds int 3911da177e4SLinus Torvalds rpcauth_uptodatecred(struct rpc_task *task) 3921da177e4SLinus Torvalds { 3931da177e4SLinus Torvalds return !(task->tk_msg.rpc_cred) || 3941da177e4SLinus Torvalds (task->tk_msg.rpc_cred->cr_flags & RPCAUTH_CRED_UPTODATE); 3951da177e4SLinus Torvalds } 396