diff options
Diffstat (limited to 'usr/src/lib/nsswitch/files/common/getgrent.c')
| -rw-r--r-- | usr/src/lib/nsswitch/files/common/getgrent.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/usr/src/lib/nsswitch/files/common/getgrent.c b/usr/src/lib/nsswitch/files/common/getgrent.c new file mode 100644 index 0000000000..82bc1989df --- /dev/null +++ b/usr/src/lib/nsswitch/files/common/getgrent.c @@ -0,0 +1,137 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License, Version 1.0 only + * (the "License"). You may not use this file except in compliance + * with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ +/* + * Copyright (c) 1988-1995 Sun Microsystems Inc + * All Rights Reserved. + * + * files/getgrent.c -- "files" backend for nsswitch "group" database + */ + +#pragma ident "%Z%%M% %I% %E% SMI" + +#include <grp.h> +#include <unistd.h> /* for GF_PATH */ +#include "files_common.h" +#include <strings.h> + +static u_int +hash_grname(nss_XbyY_args_t *argp, int keyhash) +{ + struct group *g = argp->returnval; + const char *name = keyhash ? argp->key.name : g->gr_name; + u_int hash = 0; + + while (*name != 0) + hash = hash * 15 + *name++; + + return (hash); +} + +static u_int +hash_grgid(nss_XbyY_args_t *argp, int keyhash) +{ + struct group *g = argp->returnval; + return (keyhash ? (u_int)argp->key.gid : (u_int)g->gr_gid); +} + +static files_hash_func hash_gr[2] = { hash_grname, hash_grgid }; + +static files_hash_t hashinfo = { + DEFAULTMUTEX, + sizeof (struct group), + NSS_BUFLEN_GROUP, + 2, + hash_gr +}; + +static int +check_grname(argp) + nss_XbyY_args_t *argp; +{ + struct group *g = (struct group *)argp->returnval; + + /* +/- entries only valid in compat source */ + if (g->gr_name != 0 && (g->gr_name[0] == '+' || g->gr_name[0] == '-')) + return (0); + return (strcmp(g->gr_name, argp->key.name) == 0); +} + +static nss_status_t +getbyname(be, a) + files_backend_ptr_t be; + void *a; +{ + return (_nss_files_XY_hash(be, a, 0, &hashinfo, 0, check_grname)); +} + +static int +check_grgid(argp) + nss_XbyY_args_t *argp; +{ + struct group *g = (struct group *)argp->returnval; + + /* +/- entries only valid in compat source */ + if (g->gr_name != 0 && (g->gr_name[0] == '+' || g->gr_name[0] == '-')) + return (0); + return (g->gr_gid == argp->key.gid); +} + +static nss_status_t +getbygid(be, a) + files_backend_ptr_t be; + void *a; +{ + return (_nss_files_XY_hash(be, a, 0, &hashinfo, 1, check_grgid)); +} + +static nss_status_t +getbymember(be, a) + files_backend_ptr_t be; + void *a; +{ + struct nss_groupsbymem *argp = (struct nss_groupsbymem *) a; + + return (_nss_files_do_all(be, argp, argp->username, + (files_do_all_func_t)argp->process_cstr)); +} + +static files_backend_op_t group_ops[] = { + _nss_files_destr, + _nss_files_endent, + _nss_files_setent, + _nss_files_getent_rigid, + getbyname, + getbygid, + getbymember +}; + +/*ARGSUSED*/ +nss_backend_t * +_nss_files_group_constr(dummy1, dummy2, dummy3) + const char *dummy1, *dummy2, *dummy3; +{ + return (_nss_files_constr(group_ops, + sizeof (group_ops) / sizeof (group_ops[0]), + GF_PATH, + NSS_LINELEN_GROUP, + &hashinfo)); +} |