#include <linux/sunrpc/xdr.h>
#include <linux/sunrpc/svcsock.h>
#include <linux/sunrpc/svcauth.h>
+#include <linux/sunrpc/gss_api.h>
#include <linux/err.h>
#include <linux/seq_file.h>
#include <linux/hash.h>
#include <linux/string.h>
#include <net/sock.h>
-
+#include <net/ipv6.h>
+#include <linux/kernel.h>
#define RPCDBG_FACILITY RPCDBG_AUTH
return NULL;
kref_init(&new->h.ref);
new->h.name = kstrdup(name, GFP_KERNEL);
+ if (new->h.name == NULL) {
+ kfree(new);
+ return NULL;
+ }
new->h.flavour = &svcauth_unix;
new->addr_changes = 0;
rv = auth_domain_lookup(name, &new->h);
}
}
+EXPORT_SYMBOL(unix_domain_find);
static void svcauth_unix_domain_release(struct auth_domain *dom)
{
struct ip_map {
struct cache_head h;
char m_class[8]; /* e.g. "nfsd" */
- struct in_addr m_addr;
+ struct in6_addr m_addr;
struct unix_domain *m_client;
int m_add_change;
};
* IP addresses in reverse-endian (i.e. on a little-endian machine).
* So use a trivial but reliable hash instead
*/
-static inline int hash_ip(unsigned long ip)
+static inline int hash_ip(__be32 ip)
{
- int hash = ip ^ (ip>>16);
+ int hash = (__force u32)ip ^ ((__force u32)ip>>16);
return (hash ^ (hash>>8)) & 0xff;
}
#endif
+static inline int hash_ip6(struct in6_addr ip)
+{
+ return (hash_ip(ip.s6_addr32[0]) ^
+ hash_ip(ip.s6_addr32[1]) ^
+ hash_ip(ip.s6_addr32[2]) ^
+ hash_ip(ip.s6_addr32[3]));
+}
static int ip_map_match(struct cache_head *corig, struct cache_head *cnew)
{
struct ip_map *orig = container_of(corig, struct ip_map, h);
struct ip_map *new = container_of(cnew, struct ip_map, h);
return strcmp(orig->m_class, new->m_class) == 0
- && orig->m_addr.s_addr == new->m_addr.s_addr;
+ && ipv6_addr_equal(&orig->m_addr, &new->m_addr);
}
static void ip_map_init(struct cache_head *cnew, struct cache_head *citem)
{
struct ip_map *item = container_of(citem, struct ip_map, h);
strcpy(new->m_class, item->m_class);
- new->m_addr.s_addr = item->m_addr.s_addr;
+ ipv6_addr_copy(&new->m_addr, &item->m_addr);
}
static void update(struct cache_head *cnew, struct cache_head *citem)
{
struct cache_head *h,
char **bpp, int *blen)
{
- char text_addr[20];
+ char text_addr[40];
struct ip_map *im = container_of(h, struct ip_map, h);
- __be32 addr = im->m_addr.s_addr;
-
- snprintf(text_addr, 20, "%u.%u.%u.%u",
- ntohl(addr) >> 24 & 0xff,
- ntohl(addr) >> 16 & 0xff,
- ntohl(addr) >> 8 & 0xff,
- ntohl(addr) >> 0 & 0xff);
+ if (ipv6_addr_v4mapped(&(im->m_addr))) {
+ snprintf(text_addr, 20, NIPQUAD_FMT,
+ ntohl(im->m_addr.s6_addr32[3]) >> 24 & 0xff,
+ ntohl(im->m_addr.s6_addr32[3]) >> 16 & 0xff,
+ ntohl(im->m_addr.s6_addr32[3]) >> 8 & 0xff,
+ ntohl(im->m_addr.s6_addr32[3]) >> 0 & 0xff);
+ } else {
+ snprintf(text_addr, 40, NIP6_FMT, NIP6(im->m_addr));
+ }
qword_add(bpp, blen, im->m_class);
qword_add(bpp, blen, text_addr);
(*bpp)[-1] = '\n';
}
-static struct ip_map *ip_map_lookup(char *class, struct in_addr addr);
+static struct ip_map *ip_map_lookup(char *class, struct in6_addr *addr);
static int ip_map_update(struct ip_map *ipm, struct unix_domain *udom, time_t expiry);
static int ip_map_parse(struct cache_detail *cd,
* for scratch: */
char *buf = mesg;
int len;
- int b1,b2,b3,b4;
+ int b1, b2, b3, b4, b5, b6, b7, b8;
char c;
char class[8];
- struct in_addr addr;
+ struct in6_addr addr;
int err;
struct ip_map *ipmp;
len = qword_get(&mesg, buf, mlen);
if (len <= 0) return -EINVAL;
- if (sscanf(buf, "%u.%u.%u.%u%c", &b1, &b2, &b3, &b4, &c) != 4)
+ if (sscanf(buf, NIPQUAD_FMT "%c", &b1, &b2, &b3, &b4, &c) == 4) {
+ addr.s6_addr32[0] = 0;
+ addr.s6_addr32[1] = 0;
+ addr.s6_addr32[2] = htonl(0xffff);
+ addr.s6_addr32[3] =
+ htonl((((((b1<<8)|b2)<<8)|b3)<<8)|b4);
+ } else if (sscanf(buf, NIP6_FMT "%c",
+ &b1, &b2, &b3, &b4, &b5, &b6, &b7, &b8, &c) == 8) {
+ addr.s6_addr16[0] = htons(b1);
+ addr.s6_addr16[1] = htons(b2);
+ addr.s6_addr16[2] = htons(b3);
+ addr.s6_addr16[3] = htons(b4);
+ addr.s6_addr16[4] = htons(b5);
+ addr.s6_addr16[5] = htons(b6);
+ addr.s6_addr16[6] = htons(b7);
+ addr.s6_addr16[7] = htons(b8);
+ } else
return -EINVAL;
-
+
expiry = get_expiry(&mesg);
if (expiry ==0)
return -EINVAL;
} else
dom = NULL;
- addr.s_addr =
- htonl((((((b1<<8)|b2)<<8)|b3)<<8)|b4);
-
- ipmp = ip_map_lookup(class,addr);
+ ipmp = ip_map_lookup(class, &addr);
if (ipmp) {
err = ip_map_update(ipmp,
container_of(dom, struct unix_domain, h),
struct cache_head *h)
{
struct ip_map *im;
- struct in_addr addr;
+ struct in6_addr addr;
char *dom = "-no-domain-";
if (h == NULL) {
}
im = container_of(h, struct ip_map, h);
/* class addr domain */
- addr = im->m_addr;
+ ipv6_addr_copy(&addr, &im->m_addr);
- if (test_bit(CACHE_VALID, &h->flags) &&
+ if (test_bit(CACHE_VALID, &h->flags) &&
!test_bit(CACHE_NEGATIVE, &h->flags))
dom = im->m_client->h.name;
- seq_printf(m, "%s %d.%d.%d.%d %s\n",
- im->m_class,
- ntohl(addr.s_addr) >> 24 & 0xff,
- ntohl(addr.s_addr) >> 16 & 0xff,
- ntohl(addr.s_addr) >> 8 & 0xff,
- ntohl(addr.s_addr) >> 0 & 0xff,
- dom
- );
+ if (ipv6_addr_v4mapped(&addr)) {
+ seq_printf(m, "%s " NIPQUAD_FMT " %s\n",
+ im->m_class,
+ ntohl(addr.s6_addr32[3]) >> 24 & 0xff,
+ ntohl(addr.s6_addr32[3]) >> 16 & 0xff,
+ ntohl(addr.s6_addr32[3]) >> 8 & 0xff,
+ ntohl(addr.s6_addr32[3]) >> 0 & 0xff,
+ dom);
+ } else {
+ seq_printf(m, "%s " NIP6_FMT " %s\n",
+ im->m_class, NIP6(addr), dom);
+ }
return 0;
}
-
+
struct cache_detail ip_map_cache = {
.owner = THIS_MODULE,
.alloc = ip_map_alloc,
};
-static struct ip_map *ip_map_lookup(char *class, struct in_addr addr)
+static struct ip_map *ip_map_lookup(char *class, struct in6_addr *addr)
{
struct ip_map ip;
struct cache_head *ch;
strcpy(ip.m_class, class);
- ip.m_addr = addr;
+ ipv6_addr_copy(&ip.m_addr, addr);
ch = sunrpc_cache_lookup(&ip_map_cache, &ip.h,
hash_str(class, IP_HASHBITS) ^
- hash_ip((unsigned long)addr.s_addr));
+ hash_ip6(*addr));
if (ch)
return container_of(ch, struct ip_map, h);
ch = sunrpc_cache_update(&ip_map_cache,
&ip.h, &ipm->h,
hash_str(ipm->m_class, IP_HASHBITS) ^
- hash_ip((unsigned long)ipm->m_addr.s_addr));
+ hash_ip6(ipm->m_addr));
if (!ch)
return -ENOMEM;
cache_put(ch, &ip_map_cache);
return 0;
}
-int auth_unix_add_addr(struct in_addr addr, struct auth_domain *dom)
+int auth_unix_add_addr(struct in6_addr *addr, struct auth_domain *dom)
{
struct unix_domain *udom;
struct ip_map *ipmp;
else
return -ENOMEM;
}
+EXPORT_SYMBOL(auth_unix_add_addr);
int auth_unix_forget_old(struct auth_domain *dom)
{
struct unix_domain *udom;
-
+
if (dom->flavour != &svcauth_unix)
return -EINVAL;
udom = container_of(dom, struct unix_domain, h);
udom->addr_changes++;
return 0;
}
+EXPORT_SYMBOL(auth_unix_forget_old);
-struct auth_domain *auth_unix_lookup(struct in_addr addr)
+struct auth_domain *auth_unix_lookup(struct in6_addr *addr)
{
struct ip_map *ipm;
struct auth_domain *rv;
cache_put(&ipm->h, &ip_map_cache);
return rv;
}
+EXPORT_SYMBOL(auth_unix_lookup);
void svcauth_unix_purge(void)
{
cache_purge(&ip_map_cache);
}
+EXPORT_SYMBOL(svcauth_unix_purge);
static inline struct ip_map *
ip_map_cached_get(struct svc_rqst *rqstp)
{
- struct ip_map *ipm = rqstp->rq_sock->sk_info_authunix;
- if (ipm != NULL) {
- if (!cache_valid(&ipm->h)) {
- /*
- * The entry has been invalidated since it was
- * remembered, e.g. by a second mount from the
- * same IP address.
- */
- rqstp->rq_sock->sk_info_authunix = NULL;
- cache_put(&ipm->h, &ip_map_cache);
- return NULL;
+ struct ip_map *ipm = NULL;
+ struct svc_xprt *xprt = rqstp->rq_xprt;
+
+ if (test_bit(XPT_CACHE_AUTH, &xprt->xpt_flags)) {
+ spin_lock(&xprt->xpt_lock);
+ ipm = xprt->xpt_auth_cache;
+ if (ipm != NULL) {
+ if (!cache_valid(&ipm->h)) {
+ /*
+ * The entry has been invalidated since it was
+ * remembered, e.g. by a second mount from the
+ * same IP address.
+ */
+ xprt->xpt_auth_cache = NULL;
+ spin_unlock(&xprt->xpt_lock);
+ cache_put(&ipm->h, &ip_map_cache);
+ return NULL;
+ }
+ cache_get(&ipm->h);
}
- cache_get(&ipm->h);
+ spin_unlock(&xprt->xpt_lock);
}
return ipm;
}
static inline void
ip_map_cached_put(struct svc_rqst *rqstp, struct ip_map *ipm)
{
- struct svc_sock *svsk = rqstp->rq_sock;
-
- if (svsk->sk_sock->type == SOCK_STREAM && svsk->sk_info_authunix == NULL)
- svsk->sk_info_authunix = ipm; /* newly cached, keep the reference */
- else
+ struct svc_xprt *xprt = rqstp->rq_xprt;
+
+ if (test_bit(XPT_CACHE_AUTH, &xprt->xpt_flags)) {
+ spin_lock(&xprt->xpt_lock);
+ if (xprt->xpt_auth_cache == NULL) {
+ /* newly cached, keep the reference */
+ xprt->xpt_auth_cache = ipm;
+ ipm = NULL;
+ }
+ spin_unlock(&xprt->xpt_lock);
+ }
+ if (ipm)
cache_put(&ipm->h, &ip_map_cache);
}
cache_put(&ipm->h, &ip_map_cache);
}
-static int
+/****************************************************************************
+ * auth.unix.gid cache
+ * simple cache to map a UID to a list of GIDs
+ * because AUTH_UNIX aka AUTH_SYS has a max of 16
+ */
+#define GID_HASHBITS 8
+#define GID_HASHMAX (1<<GID_HASHBITS)
+#define GID_HASHMASK (GID_HASHMAX - 1)
+
+struct unix_gid {
+ struct cache_head h;
+ uid_t uid;
+ struct group_info *gi;
+};
+static struct cache_head *gid_table[GID_HASHMAX];
+
+static void unix_gid_put(struct kref *kref)
+{
+ struct cache_head *item = container_of(kref, struct cache_head, ref);
+ struct unix_gid *ug = container_of(item, struct unix_gid, h);
+ if (test_bit(CACHE_VALID, &item->flags) &&
+ !test_bit(CACHE_NEGATIVE, &item->flags))
+ put_group_info(ug->gi);
+ kfree(ug);
+}
+
+static int unix_gid_match(struct cache_head *corig, struct cache_head *cnew)
+{
+ struct unix_gid *orig = container_of(corig, struct unix_gid, h);
+ struct unix_gid *new = container_of(cnew, struct unix_gid, h);
+ return orig->uid == new->uid;
+}
+static void unix_gid_init(struct cache_head *cnew, struct cache_head *citem)
+{
+ struct unix_gid *new = container_of(cnew, struct unix_gid, h);
+ struct unix_gid *item = container_of(citem, struct unix_gid, h);
+ new->uid = item->uid;
+}
+static void unix_gid_update(struct cache_head *cnew, struct cache_head *citem)
+{
+ struct unix_gid *new = container_of(cnew, struct unix_gid, h);
+ struct unix_gid *item = container_of(citem, struct unix_gid, h);
+
+ get_group_info(item->gi);
+ new->gi = item->gi;
+}
+static struct cache_head *unix_gid_alloc(void)
+{
+ struct unix_gid *g = kmalloc(sizeof(*g), GFP_KERNEL);
+ if (g)
+ return &g->h;
+ else
+ return NULL;
+}
+
+static void unix_gid_request(struct cache_detail *cd,
+ struct cache_head *h,
+ char **bpp, int *blen)
+{
+ char tuid[20];
+ struct unix_gid *ug = container_of(h, struct unix_gid, h);
+
+ snprintf(tuid, 20, "%u", ug->uid);
+ qword_add(bpp, blen, tuid);
+ (*bpp)[-1] = '\n';
+}
+
+static struct unix_gid *unix_gid_lookup(uid_t uid);
+extern struct cache_detail unix_gid_cache;
+
+static int unix_gid_parse(struct cache_detail *cd,
+ char *mesg, int mlen)
+{
+ /* uid expiry Ngid gid0 gid1 ... gidN-1 */
+ int uid;
+ int gids;
+ int rv;
+ int i;
+ int err;
+ time_t expiry;
+ struct unix_gid ug, *ugp;
+
+ if (mlen <= 0 || mesg[mlen-1] != '\n')
+ return -EINVAL;
+ mesg[mlen-1] = 0;
+
+ rv = get_int(&mesg, &uid);
+ if (rv)
+ return -EINVAL;
+ ug.uid = uid;
+
+ expiry = get_expiry(&mesg);
+ if (expiry == 0)
+ return -EINVAL;
+
+ rv = get_int(&mesg, &gids);
+ if (rv || gids < 0 || gids > 8192)
+ return -EINVAL;
+
+ ug.gi = groups_alloc(gids);
+ if (!ug.gi)
+ return -ENOMEM;
+
+ for (i = 0 ; i < gids ; i++) {
+ int gid;
+ rv = get_int(&mesg, &gid);
+ err = -EINVAL;
+ if (rv)
+ goto out;
+ GROUP_AT(ug.gi, i) = gid;
+ }
+
+ ugp = unix_gid_lookup(uid);
+ if (ugp) {
+ struct cache_head *ch;
+ ug.h.flags = 0;
+ ug.h.expiry_time = expiry;
+ ch = sunrpc_cache_update(&unix_gid_cache,
+ &ug.h, &ugp->h,
+ hash_long(uid, GID_HASHBITS));
+ if (!ch)
+ err = -ENOMEM;
+ else {
+ err = 0;
+ cache_put(ch, &unix_gid_cache);
+ }
+ } else
+ err = -ENOMEM;
+ out:
+ if (ug.gi)
+ put_group_info(ug.gi);
+ return err;
+}
+
+static int unix_gid_show(struct seq_file *m,
+ struct cache_detail *cd,
+ struct cache_head *h)
+{
+ struct unix_gid *ug;
+ int i;
+ int glen;
+
+ if (h == NULL) {
+ seq_puts(m, "#uid cnt: gids...\n");
+ return 0;
+ }
+ ug = container_of(h, struct unix_gid, h);
+ if (test_bit(CACHE_VALID, &h->flags) &&
+ !test_bit(CACHE_NEGATIVE, &h->flags))
+ glen = ug->gi->ngroups;
+ else
+ glen = 0;
+
+ seq_printf(m, "%d %d:", ug->uid, glen);
+ for (i = 0; i < glen; i++)
+ seq_printf(m, " %d", GROUP_AT(ug->gi, i));
+ seq_printf(m, "\n");
+ return 0;
+}
+
+struct cache_detail unix_gid_cache = {
+ .owner = THIS_MODULE,
+ .hash_size = GID_HASHMAX,
+ .hash_table = gid_table,
+ .name = "auth.unix.gid",
+ .cache_put = unix_gid_put,
+ .cache_request = unix_gid_request,
+ .cache_parse = unix_gid_parse,
+ .cache_show = unix_gid_show,
+ .match = unix_gid_match,
+ .init = unix_gid_init,
+ .update = unix_gid_update,
+ .alloc = unix_gid_alloc,
+};
+
+static struct unix_gid *unix_gid_lookup(uid_t uid)
+{
+ struct unix_gid ug;
+ struct cache_head *ch;
+
+ ug.uid = uid;
+ ch = sunrpc_cache_lookup(&unix_gid_cache, &ug.h,
+ hash_long(uid, GID_HASHBITS));
+ if (ch)
+ return container_of(ch, struct unix_gid, h);
+ else
+ return NULL;
+}
+
+static int unix_gid_find(uid_t uid, struct group_info **gip,
+ struct svc_rqst *rqstp)
+{
+ struct unix_gid *ug = unix_gid_lookup(uid);
+ if (!ug)
+ return -EAGAIN;
+ switch (cache_check(&unix_gid_cache, &ug->h, &rqstp->rq_chandle)) {
+ case -ENOENT:
+ *gip = NULL;
+ return 0;
+ case 0:
+ *gip = ug->gi;
+ get_group_info(*gip);
+ return 0;
+ default:
+ return -EAGAIN;
+ }
+}
+
+int
svcauth_unix_set_client(struct svc_rqst *rqstp)
{
+ struct sockaddr_in *sin;
+ struct sockaddr_in6 *sin6, sin6_storage;
struct ip_map *ipm;
+ switch (rqstp->rq_addr.ss_family) {
+ case AF_INET:
+ sin = svc_addr_in(rqstp);
+ sin6 = &sin6_storage;
+ ipv6_addr_set(&sin6->sin6_addr, 0, 0,
+ htonl(0x0000FFFF), sin->sin_addr.s_addr);
+ break;
+ case AF_INET6:
+ sin6 = svc_addr_in6(rqstp);
+ break;
+ default:
+ BUG();
+ }
+
rqstp->rq_client = NULL;
if (rqstp->rq_proc == 0)
return SVC_OK;
ipm = ip_map_cached_get(rqstp);
if (ipm == NULL)
ipm = ip_map_lookup(rqstp->rq_server->sv_program->pg_class,
- rqstp->rq_addr.sin_addr);
+ &sin6->sin6_addr);
if (ipm == NULL)
return SVC_DENIED;
default:
BUG();
case -EAGAIN:
+ case -ETIMEDOUT:
return SVC_DROP;
case -ENOENT:
return SVC_DENIED;
return SVC_OK;
}
+EXPORT_SYMBOL(svcauth_unix_set_client);
+
static int
svcauth_null_accept(struct svc_rqst *rqstp, __be32 *authp)
{
if (argv->iov_len < 3*4)
return SVC_GARBAGE;
- if (svc_getu32(argv) != 0) {
+ if (svc_getu32(argv) != 0) {
dprintk("svc: bad null cred\n");
*authp = rpc_autherr_badcred;
return SVC_DENIED;
svc_putnl(resv, RPC_AUTH_NULL);
svc_putnl(resv, 0);
+ rqstp->rq_flavor = RPC_AUTH_NULL;
return SVC_OK;
}
slen = svc_getnl(argv); /* gids length */
if (slen > 16 || (len -= (slen + 2)*4) < 0)
goto badcred;
- cred->cr_group_info = groups_alloc(slen);
- if (cred->cr_group_info == NULL)
+ if (unix_gid_find(cred->cr_uid, &cred->cr_group_info, rqstp)
+ == -EAGAIN)
return SVC_DROP;
- for (i = 0; i < slen; i++)
- GROUP_AT(cred->cr_group_info, i) = svc_getnl(argv);
-
+ if (cred->cr_group_info == NULL) {
+ cred->cr_group_info = groups_alloc(slen);
+ if (cred->cr_group_info == NULL)
+ return SVC_DROP;
+ for (i = 0; i < slen; i++)
+ GROUP_AT(cred->cr_group_info, i) = svc_getnl(argv);
+ } else {
+ for (i = 0; i < slen ; i++)
+ svc_getnl(argv);
+ }
if (svc_getu32(argv) != htonl(RPC_AUTH_NULL) || svc_getu32(argv) != 0) {
*authp = rpc_autherr_badverf;
return SVC_DENIED;
svc_putnl(resv, RPC_AUTH_NULL);
svc_putnl(resv, 0);
+ rqstp->rq_flavor = RPC_AUTH_UNIX;
return SVC_OK;
badcred:
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff