diff options
Diffstat (limited to 'support')
| -rw-r--r-- | support/include/nfsrpc.h | 3 | ||||
| -rw-r--r-- | support/nfs/rpc_socket.c | 21 |
2 files changed, 24 insertions, 0 deletions
diff --git a/support/include/nfsrpc.h b/support/include/nfsrpc.h index 4db35ab..6ebefca 100644 --- a/support/include/nfsrpc.h +++ b/support/include/nfsrpc.h @@ -160,4 +160,7 @@ extern int nfs_rpc_ping(const struct sockaddr *sap, const unsigned short protocol, const struct timeval *timeout); +/* create AUTH_SYS handle with no supplemental groups */ +extern AUTH * nfs_authsys_create(void); + #endif /* !__NFS_UTILS_NFSRPC_H */ diff --git a/support/nfs/rpc_socket.c b/support/nfs/rpc_socket.c index 0e20824..aa6a205 100644 --- a/support/nfs/rpc_socket.c +++ b/support/nfs/rpc_socket.c @@ -557,3 +557,24 @@ rpcprog_t nfs_getrpcbyname(const rpcprog_t program, const char *table[]) return program; } + +/* + * AUTH_SYS doesn't allow more than 16 gids in the supplemental group list. + * If there are more than that, trying to determine which ones to include + * in the list is problematic. This function creates an auth handle that + * only has the primary gid in the supplemental gids list. It's intended to + * be used for protocols where credentials really don't matter much (the MNT + * protocol, for instance). + */ +AUTH * +nfs_authsys_create(void) +{ + char machname[MAXHOSTNAMELEN + 1]; + uid_t uid = geteuid(); + gid_t gid = getegid(); + + if (gethostname(machname, sizeof(machname)) == -1) + return NULL; + + return authsys_create(machname, uid, gid, 1, &gid); +} |