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738d1a5a | 1 | /* Copyright (C) 1991, 1992, 1996, 1998, 1999 Free Software Foundation, Inc. |
e4cf5070 | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
e4cf5070 UD |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | License, or (at your option) any later version. | |
28f540f4 | 8 | |
e4cf5070 UD |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Library General Public License for more details. | |
28f540f4 | 13 | |
e4cf5070 UD |
14 | You should have received a copy of the GNU Library General Public |
15 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
16 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
17 | Boston, MA 02111-1307, USA. */ | |
28f540f4 | 18 | |
e4cf5070 | 19 | #include <alloca.h> |
28f540f4 RM |
20 | #include <errno.h> |
21 | #include <stdio.h> | |
e4cf5070 | 22 | #include <unistd.h> |
28f540f4 RM |
23 | #include <pwd.h> |
24 | ||
25 | ||
26 | /* Re-construct the password-file line for the given uid | |
27 | in the given buffer. This knows the format that the caller | |
28 | will expect, but this need not be the format of the password file. */ | |
a68b0d31 UD |
29 | |
30 | int __getpw __P ((__uid_t uid, char *buf)); | |
31 | ||
28f540f4 | 32 | int |
a68b0d31 | 33 | __getpw (uid, buf) |
c4029823 | 34 | __uid_t uid; |
e4cf5070 | 35 | char *buf; |
28f540f4 | 36 | { |
e4cf5070 UD |
37 | size_t buflen; |
38 | char *tmpbuf; | |
39 | struct passwd resbuf, *p; | |
28f540f4 RM |
40 | |
41 | if (buf == NULL) | |
42 | { | |
c4029823 | 43 | __set_errno (EINVAL); |
28f540f4 RM |
44 | return -1; |
45 | } | |
46 | ||
e4cf5070 UD |
47 | buflen = __sysconf (_SC_GETPW_R_SIZE_MAX); |
48 | tmpbuf = alloca (buflen); | |
49 | ||
738d1a5a | 50 | if (__getpwuid_r (uid, &resbuf, tmpbuf, buflen, &p) != 0) |
28f540f4 RM |
51 | return -1; |
52 | ||
0ea5db4f UD |
53 | if (p == NULL) |
54 | return -1; | |
55 | ||
d762684b UD |
56 | if (sprintf (buf, "%s:%s:%lu:%lu:%s:%s:%s", p->pw_name, p->pw_passwd, |
57 | (unsigned long int) p->pw_uid, (unsigned long int) p->pw_gid, | |
58 | p->pw_gecos, p->pw_dir, p->pw_shell) < 0) | |
28f540f4 RM |
59 | return -1; |
60 | ||
61 | return 0; | |
62 | } | |
a68b0d31 | 63 | weak_alias (__getpw, getpw) |
16848c98 UD |
64 | |
65 | link_warning (getpw, "the `getpw' function is dangerous and should not be used.") |