diff options
Diffstat (limited to 'net/sunrpc/svcauth_unix.c')
| -rw-r--r-- | net/sunrpc/svcauth_unix.c | 37 |
1 files changed, 22 insertions, 15 deletions
diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c index 521d8f7dc833..2777fa896645 100644 --- a/net/sunrpc/svcauth_unix.c +++ b/net/sunrpc/svcauth_unix.c @@ -14,6 +14,7 @@ #include <net/sock.h> #include <net/ipv6.h> #include <linux/kernel.h> +#include <linux/user_namespace.h> #define RPCDBG_FACILITY RPCDBG_AUTH #include <linux/sunrpc/clnt.h> @@ -346,17 +347,12 @@ static inline int ip_map_update(struct net *net, struct ip_map *ipm, return __ip_map_update(sn->ip_map_cache, ipm, udom, expiry); } - -void svcauth_unix_purge(void) +void svcauth_unix_purge(struct net *net) { - struct net *net; - - for_each_net(net) { - struct sunrpc_net *sn; + struct sunrpc_net *sn; - sn = net_generic(net, sunrpc_net_id); - cache_purge(sn->ip_map_cache); - } + sn = net_generic(net, sunrpc_net_id); + cache_purge(sn->ip_map_cache); } EXPORT_SYMBOL_GPL(svcauth_unix_purge); @@ -530,11 +526,15 @@ static int unix_gid_parse(struct cache_detail *cd, for (i = 0 ; i < gids ; i++) { int gid; + kgid_t kgid; rv = get_int(&mesg, &gid); err = -EINVAL; if (rv) goto out; - GROUP_AT(ug.gi, i) = gid; + kgid = make_kgid(&init_user_ns, gid); + if (!gid_valid(kgid)) + goto out; + GROUP_AT(ug.gi, i) = kgid; } ugp = unix_gid_lookup(cd, uid); @@ -563,6 +563,7 @@ static int unix_gid_show(struct seq_file *m, struct cache_detail *cd, struct cache_head *h) { + struct user_namespace *user_ns = current_user_ns(); struct unix_gid *ug; int i; int glen; @@ -580,7 +581,7 @@ static int unix_gid_show(struct seq_file *m, seq_printf(m, "%u %d:", ug->uid, glen); for (i = 0; i < glen; i++) - seq_printf(m, " %d", GROUP_AT(ug->gi, i)); + seq_printf(m, " %d", from_kgid_munged(user_ns, GROUP_AT(ug->gi, i))); seq_printf(m, "\n"); return 0; } @@ -745,6 +746,7 @@ svcauth_null_accept(struct svc_rqst *rqstp, __be32 *authp) struct svc_cred *cred = &rqstp->rq_cred; cred->cr_group_info = NULL; + cred->cr_principal = NULL; rqstp->rq_client = NULL; if (argv->iov_len < 3*4) @@ -772,7 +774,7 @@ svcauth_null_accept(struct svc_rqst *rqstp, __be32 *authp) svc_putnl(resv, RPC_AUTH_NULL); svc_putnl(resv, 0); - rqstp->rq_flavor = RPC_AUTH_NULL; + rqstp->rq_cred.cr_flavor = RPC_AUTH_NULL; return SVC_OK; } @@ -810,6 +812,7 @@ svcauth_unix_accept(struct svc_rqst *rqstp, __be32 *authp) int len = argv->iov_len; cred->cr_group_info = NULL; + cred->cr_principal = NULL; rqstp->rq_client = NULL; if ((len -= 3*4) < 0) @@ -831,8 +834,12 @@ svcauth_unix_accept(struct svc_rqst *rqstp, __be32 *authp) cred->cr_group_info = groups_alloc(slen); if (cred->cr_group_info == NULL) return SVC_CLOSE; - for (i = 0; i < slen; i++) - GROUP_AT(cred->cr_group_info, i) = svc_getnl(argv); + for (i = 0; i < slen; i++) { + kgid_t kgid = make_kgid(&init_user_ns, svc_getnl(argv)); + if (!gid_valid(kgid)) + goto badcred; + GROUP_AT(cred->cr_group_info, i) = kgid; + } if (svc_getu32(argv) != htonl(RPC_AUTH_NULL) || svc_getu32(argv) != 0) { *authp = rpc_autherr_badverf; return SVC_DENIED; @@ -842,7 +849,7 @@ svcauth_unix_accept(struct svc_rqst *rqstp, __be32 *authp) svc_putnl(resv, RPC_AUTH_NULL); svc_putnl(resv, 0); - rqstp->rq_flavor = RPC_AUTH_UNIX; + rqstp->rq_cred.cr_flavor = RPC_AUTH_UNIX; return SVC_OK; badcred: |