diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/sunrpc/auth_gss/gss_krb5_keys.c | 17 | ||||
| -rw-r--r-- | net/sunrpc/auth_gss/gss_rpc_upcall.c | 2 | ||||
| -rw-r--r-- | net/sunrpc/auth_gss/svcauth_gss.c | 82 | ||||
| -rw-r--r-- | net/sunrpc/cache.c | 4 | ||||
| -rw-r--r-- | net/sunrpc/netns.h | 1 | ||||
| -rw-r--r-- | net/sunrpc/svc.c | 25 | ||||
| -rw-r--r-- | net/sunrpc/xprtsock.c | 7 |
7 files changed, 47 insertions, 91 deletions
diff --git a/net/sunrpc/auth_gss/gss_krb5_keys.c b/net/sunrpc/auth_gss/gss_krb5_keys.c index 76e42e6be755..24589bd2a4b6 100644 --- a/net/sunrpc/auth_gss/gss_krb5_keys.c +++ b/net/sunrpc/auth_gss/gss_krb5_keys.c @@ -59,6 +59,7 @@ #include <linux/crypto.h> #include <linux/sunrpc/gss_krb5.h> #include <linux/sunrpc/xdr.h> +#include <linux/lcm.h> #ifdef RPC_DEBUG # define RPCDBG_FACILITY RPCDBG_AUTH @@ -72,7 +73,7 @@ static void krb5_nfold(u32 inbits, const u8 *in, u32 outbits, u8 *out) { - int a, b, c, lcm; + unsigned long ulcm; int byte, i, msbit; /* the code below is more readable if I make these bytes @@ -82,17 +83,7 @@ static void krb5_nfold(u32 inbits, const u8 *in, outbits >>= 3; /* first compute lcm(n,k) */ - - a = outbits; - b = inbits; - - while (b != 0) { - c = b; - b = a%b; - a = c; - } - - lcm = outbits*inbits/a; + ulcm = lcm(inbits, outbits); /* now do the real work */ @@ -101,7 +92,7 @@ static void krb5_nfold(u32 inbits, const u8 *in, /* this will end up cycling through k lcm(k,n)/k times, which is correct */ - for (i = lcm-1; i >= 0; i--) { + for (i = ulcm-1; i >= 0; i--) { /* compute the msbit in k which gets added into this byte */ msbit = ( /* first, start with the msbit in the first, diff --git a/net/sunrpc/auth_gss/gss_rpc_upcall.c b/net/sunrpc/auth_gss/gss_rpc_upcall.c index 458f85e9b0ba..abbb7dcd1689 100644 --- a/net/sunrpc/auth_gss/gss_rpc_upcall.c +++ b/net/sunrpc/auth_gss/gss_rpc_upcall.c @@ -137,7 +137,6 @@ void init_gssp_clnt(struct sunrpc_net *sn) { mutex_init(&sn->gssp_lock); sn->gssp_clnt = NULL; - init_waitqueue_head(&sn->gssp_wq); } int set_gssp_clnt(struct net *net) @@ -154,7 +153,6 @@ int set_gssp_clnt(struct net *net) sn->gssp_clnt = clnt; } mutex_unlock(&sn->gssp_lock); - wake_up(&sn->gssp_wq); return ret; } diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c index 008cdade5aae..0f73f4507746 100644 --- a/net/sunrpc/auth_gss/svcauth_gss.c +++ b/net/sunrpc/auth_gss/svcauth_gss.c @@ -1263,65 +1263,34 @@ out: return ret; } -DEFINE_SPINLOCK(use_gssp_lock); - -static bool use_gss_proxy(struct net *net) -{ - struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); - - if (sn->use_gss_proxy != -1) - return sn->use_gss_proxy; - spin_lock(&use_gssp_lock); - /* - * If you wanted gss-proxy, you should have said so before - * starting to accept requests: - */ - sn->use_gss_proxy = 0; - spin_unlock(&use_gssp_lock); - return 0; -} - -#ifdef CONFIG_PROC_FS - +/* + * Try to set the sn->use_gss_proxy variable to a new value. We only allow + * it to be changed if it's currently undefined (-1). If it's any other value + * then return -EBUSY unless the type wouldn't have changed anyway. + */ static int set_gss_proxy(struct net *net, int type) { struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); - int ret = 0; + int ret; WARN_ON_ONCE(type != 0 && type != 1); - spin_lock(&use_gssp_lock); - if (sn->use_gss_proxy == -1 || sn->use_gss_proxy == type) - sn->use_gss_proxy = type; - else - ret = -EBUSY; - spin_unlock(&use_gssp_lock); - wake_up(&sn->gssp_wq); - return ret; -} - -static inline bool gssp_ready(struct sunrpc_net *sn) -{ - switch (sn->use_gss_proxy) { - case -1: - return false; - case 0: - return true; - case 1: - return sn->gssp_clnt; - } - WARN_ON_ONCE(1); - return false; + ret = cmpxchg(&sn->use_gss_proxy, -1, type); + if (ret != -1 && ret != type) + return -EBUSY; + return 0; } -static int wait_for_gss_proxy(struct net *net, struct file *file) +static bool use_gss_proxy(struct net *net) { struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); - if (file->f_flags & O_NONBLOCK && !gssp_ready(sn)) - return -EAGAIN; - return wait_event_interruptible(sn->gssp_wq, gssp_ready(sn)); + /* If use_gss_proxy is still undefined, then try to disable it */ + if (sn->use_gss_proxy == -1) + set_gss_proxy(net, 0); + return sn->use_gss_proxy; } +#ifdef CONFIG_PROC_FS static ssize_t write_gssp(struct file *file, const char __user *buf, size_t count, loff_t *ppos) @@ -1342,10 +1311,10 @@ static ssize_t write_gssp(struct file *file, const char __user *buf, return res; if (i != 1) return -EINVAL; - res = set_gss_proxy(net, 1); + res = set_gssp_clnt(net); if (res) return res; - res = set_gssp_clnt(net); + res = set_gss_proxy(net, 1); if (res) return res; return count; @@ -1355,16 +1324,12 @@ static ssize_t read_gssp(struct file *file, char __user *buf, size_t count, loff_t *ppos) { struct net *net = PDE_DATA(file_inode(file)); + struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); unsigned long p = *ppos; char tbuf[10]; size_t len; - int ret; - ret = wait_for_gss_proxy(net, file); - if (ret) - return ret; - - snprintf(tbuf, sizeof(tbuf), "%d\n", use_gss_proxy(net)); + snprintf(tbuf, sizeof(tbuf), "%d\n", sn->use_gss_proxy); len = strlen(tbuf); if (p >= len) return 0; @@ -1626,8 +1591,7 @@ svcauth_gss_wrap_resp_integ(struct svc_rqst *rqstp) BUG_ON(integ_len % 4); *p++ = htonl(integ_len); *p++ = htonl(gc->gc_seq); - if (xdr_buf_subsegment(resbuf, &integ_buf, integ_offset, - integ_len)) + if (xdr_buf_subsegment(resbuf, &integ_buf, integ_offset, integ_len)) BUG(); if (resbuf->tail[0].iov_base == NULL) { if (resbuf->head[0].iov_len + RPC_MAX_AUTH_SIZE > PAGE_SIZE) @@ -1635,10 +1599,8 @@ svcauth_gss_wrap_resp_integ(struct svc_rqst *rqstp) resbuf->tail[0].iov_base = resbuf->head[0].iov_base + resbuf->head[0].iov_len; resbuf->tail[0].iov_len = 0; - resv = &resbuf->tail[0]; - } else { - resv = &resbuf->tail[0]; } + resv = &resbuf->tail[0]; mic.data = (u8 *)resv->iov_base + resv->iov_len + 4; if (gss_get_mic(gsd->rsci->mechctx, &integ_buf, &mic)) goto out_err; diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c index e521d20e1970..ae333c1845bb 100644 --- a/net/sunrpc/cache.c +++ b/net/sunrpc/cache.c @@ -1111,9 +1111,7 @@ void qword_addhex(char **bpp, int *lp, char *buf, int blen) *bp++ = 'x'; len -= 2; while (blen && len >= 2) { - unsigned char c = *buf++; - *bp++ = '0' + ((c&0xf0)>>4) + (c>=0xa0)*('a'-'9'-1); - *bp++ = '0' + (c&0x0f) + ((c&0x0f)>=0x0a)*('a'-'9'-1); + bp = hex_byte_pack(bp, *buf++); len -= 2; blen--; } diff --git a/net/sunrpc/netns.h b/net/sunrpc/netns.h index 94e506f9d72b..df5826876535 100644 --- a/net/sunrpc/netns.h +++ b/net/sunrpc/netns.h @@ -27,7 +27,6 @@ struct sunrpc_net { unsigned int rpcb_is_af_local : 1; struct mutex gssp_lock; - wait_queue_head_t gssp_wq; struct rpc_clnt *gssp_clnt; int use_gss_proxy; int pipe_version; diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c index e7fbe368b4a3..5de6801cd924 100644 --- a/net/sunrpc/svc.c +++ b/net/sunrpc/svc.c @@ -916,9 +916,6 @@ static int __svc_register(struct net *net, const char *progname, #endif } - if (error < 0) - printk(KERN_WARNING "svc: failed to register %sv%u RPC " - "service (errno %d).\n", progname, version, -error); return error; } @@ -937,6 +934,7 @@ int svc_register(const struct svc_serv *serv, struct net *net, const unsigned short port) { struct svc_program *progp; + struct svc_version *vers; unsigned int i; int error = 0; @@ -946,7 +944,8 @@ int svc_register(const struct svc_serv *serv, struct net *net, for (progp = serv->sv_program; progp; progp = progp->pg_next) { for (i = 0; i < progp->pg_nvers; i++) { - if (progp->pg_vers[i] == NULL) + vers = progp->pg_vers[i]; + if (vers == NULL) continue; dprintk("svc: svc_register(%sv%d, %s, %u, %u)%s\n", @@ -955,16 +954,26 @@ int svc_register(const struct svc_serv *serv, struct net *net, proto == IPPROTO_UDP? "udp" : "tcp", port, family, - progp->pg_vers[i]->vs_hidden? - " (but not telling portmap)" : ""); + vers->vs_hidden ? + " (but not telling portmap)" : ""); - if (progp->pg_vers[i]->vs_hidden) + if (vers->vs_hidden) continue; error = __svc_register(net, progp->pg_name, progp->pg_prog, i, family, proto, port); - if (error < 0) + + if (vers->vs_rpcb_optnl) { + error = 0; + continue; + } + + if (error < 0) { + printk(KERN_WARNING "svc: failed to register " + "%sv%u RPC service (errno %d).\n", + progp->pg_name, i, -error); break; + } } } diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 2a7ca8ffe83a..817a1e523969 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -2964,10 +2964,9 @@ static struct rpc_xprt *xs_setup_bc_tcp(struct xprt_create *args) /* * Once we've associated a backchannel xprt with a connection, - * we want to keep it around as long as long as the connection - * lasts, in case we need to start using it for a backchannel - * again; this reference won't be dropped until bc_xprt is - * destroyed. + * we want to keep it around as long as the connection lasts, + * in case we need to start using it for a backchannel again; + * this reference won't be dropped until bc_xprt is destroyed. */ xprt_get(xprt); args->bc_xprt->xpt_bc_xprt = xprt; |