1 /* Copyright (C) 1998, 1999, 2003 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Thorsten Kukuk <kukuk@uni-paderborn.de>, 1998.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
27 #include <sys/socket.h>
31 #include "nscd-client.h"
32 #include "nscd_proto.h"
34 int __nss_not_use_nscd_passwd;
36 static int nscd_getpw_r (const char *key, size_t keylen, request_type type,
37 struct passwd *resultbuf, char *buffer,
38 size_t buflen) internal_function;
41 __nscd_getpwnam_r (const char *name, struct passwd *resultbuf, char *buffer,
47 return nscd_getpw_r (name, strlen (name) + 1, GETPWBYNAME, resultbuf,
52 __nscd_getpwuid_r (uid_t uid, struct passwd *resultbuf, char *buffer,
58 n = __snprintf (buf, sizeof (buf), "%d", uid) + 1;
60 return nscd_getpw_r (buf, n, GETPWBYUID, resultbuf, buffer, buflen);
66 nscd_getpw_r (const char *key, size_t keylen, request_type type,
67 struct passwd *resultbuf, char *buffer, size_t buflen)
69 int sock = __nscd_open_socket ();
71 pw_response_header pw_resp;
78 __nss_not_use_nscd_passwd = 1;
82 req.version = NSCD_VERSION;
86 vec[0].iov_base = &req;
87 vec[0].iov_len = sizeof (request_header);
88 vec[1].iov_base = (void *) key;
89 vec[1].iov_len = keylen;
91 nbytes = TEMP_FAILURE_RETRY (__writev (sock, vec, 2));
92 if (nbytes != (ssize_t) (sizeof (request_header) + keylen))
95 nbytes = TEMP_FAILURE_RETRY (__read (sock, &pw_resp,
96 sizeof (pw_response_header)));
97 if (nbytes != (ssize_t) sizeof (pw_response_header))
100 if (__builtin_expect (pw_resp.found == -1, 0))
102 /* The daemon does not cache this database. */
103 __nss_not_use_nscd_passwd = 1;
107 if (pw_resp.found == 1)
110 size_t total = (pw_resp.pw_name_len + pw_resp.pw_passwd_len
111 + pw_resp.pw_gecos_len + pw_resp.pw_dir_len
112 + pw_resp.pw_shell_len);
114 if (__builtin_expect (buflen < total, 0))
116 __set_errno (ERANGE);
121 /* Set the information we already have. */
122 resultbuf->pw_uid = pw_resp.pw_uid;
123 resultbuf->pw_gid = pw_resp.pw_gid;
126 resultbuf->pw_name = p;
127 p += pw_resp.pw_name_len;
129 resultbuf->pw_passwd = p;
130 p += pw_resp.pw_passwd_len;
132 resultbuf->pw_gecos = p;
133 p += pw_resp.pw_gecos_len;
135 resultbuf->pw_dir = p;
136 p += pw_resp.pw_dir_len;
138 resultbuf->pw_shell = p;
140 nbytes = TEMP_FAILURE_RETRY (__read (sock, buffer, total));
142 if (nbytes == (ssize_t) total)
147 /* The `errno' to some value != ERANGE. */
148 __set_errno (ENOENT);