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Diffstat (limited to 'net/sunrpc/auth_unix.c')
-rw-r--r--net/sunrpc/auth_unix.c56
1 files changed, 24 insertions, 32 deletions
diff --git a/net/sunrpc/auth_unix.c b/net/sunrpc/auth_unix.c
index 5ed91e5bcee4..b763710d3dbd 100644
--- a/net/sunrpc/auth_unix.c
+++ b/net/sunrpc/auth_unix.c
@@ -60,7 +60,8 @@ static struct rpc_cred *
60unx_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags) 60unx_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags)
61{ 61{
62 struct unx_cred *cred; 62 struct unx_cred *cred;
63 int i; 63 unsigned int groups = 0;
64 unsigned int i;
64 65
65 dprintk("RPC: allocating UNIX cred for uid %d gid %d\n", 66 dprintk("RPC: allocating UNIX cred for uid %d gid %d\n",
66 acred->uid, acred->gid); 67 acred->uid, acred->gid);
@@ -70,21 +71,17 @@ unx_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags)
70 71
71 rpcauth_init_cred(&cred->uc_base, acred, auth, &unix_credops); 72 rpcauth_init_cred(&cred->uc_base, acred, auth, &unix_credops);
72 cred->uc_base.cr_flags = 1UL << RPCAUTH_CRED_UPTODATE; 73 cred->uc_base.cr_flags = 1UL << RPCAUTH_CRED_UPTODATE;
73 if (flags & RPCAUTH_LOOKUP_ROOTCREDS) { 74
74 cred->uc_uid = 0; 75 if (acred->group_info != NULL)
75 cred->uc_gid = 0; 76 groups = acred->group_info->ngroups;
76 cred->uc_gids[0] = NOGROUP; 77 if (groups > NFS_NGROUPS)
77 } else { 78 groups = NFS_NGROUPS;
78 int groups = acred->group_info->ngroups; 79
79 if (groups > NFS_NGROUPS) 80 cred->uc_gid = acred->gid;
80 groups = NFS_NGROUPS; 81 for (i = 0; i < groups; i++)
81 82 cred->uc_gids[i] = GROUP_AT(acred->group_info, i);
82 cred->uc_gid = acred->gid; 83 if (i < NFS_NGROUPS)
83 for (i = 0; i < groups; i++) 84 cred->uc_gids[i] = NOGROUP;
84 cred->uc_gids[i] = GROUP_AT(acred->group_info, i);
85 if (i < NFS_NGROUPS)
86 cred->uc_gids[i] = NOGROUP;
87 }
88 85
89 return &cred->uc_base; 86 return &cred->uc_base;
90} 87}
@@ -118,26 +115,21 @@ static int
118unx_match(struct auth_cred *acred, struct rpc_cred *rcred, int flags) 115unx_match(struct auth_cred *acred, struct rpc_cred *rcred, int flags)
119{ 116{
120 struct unx_cred *cred = container_of(rcred, struct unx_cred, uc_base); 117 struct unx_cred *cred = container_of(rcred, struct unx_cred, uc_base);
121 int i; 118 unsigned int groups = 0;
119 unsigned int i;
122 120
123 if (!(flags & RPCAUTH_LOOKUP_ROOTCREDS)) {
124 int groups;
125 121
126 if (cred->uc_uid != acred->uid 122 if (cred->uc_uid != acred->uid || cred->uc_gid != acred->gid)
127 || cred->uc_gid != acred->gid) 123 return 0;
128 return 0;
129 124
125 if (acred->group_info != NULL)
130 groups = acred->group_info->ngroups; 126 groups = acred->group_info->ngroups;
131 if (groups > NFS_NGROUPS) 127 if (groups > NFS_NGROUPS)
132 groups = NFS_NGROUPS; 128 groups = NFS_NGROUPS;
133 for (i = 0; i < groups ; i++) 129 for (i = 0; i < groups ; i++)
134 if (cred->uc_gids[i] != GROUP_AT(acred->group_info, i)) 130 if (cred->uc_gids[i] != GROUP_AT(acred->group_info, i))
135 return 0; 131 return 0;
136 return 1; 132 return 1;
137 }
138 return (cred->uc_uid == 0
139 && cred->uc_gid == 0
140 && cred->uc_gids[0] == (gid_t) NOGROUP);
141} 133}
142 134
143/* 135/*