]>
Commit | Line | Data |
---|---|---|
2b778ceb | 1 | /* Copyright (C) 1991-2021 Free Software Foundation, Inc. |
e4cf5070 | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
e4cf5070 | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the 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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
28f540f4 | 17 | |
e4cf5070 | 18 | #include <alloca.h> |
28f540f4 RM |
19 | #include <errno.h> |
20 | #include <stdio.h> | |
e4cf5070 | 21 | #include <unistd.h> |
28f540f4 RM |
22 | #include <pwd.h> |
23 | ||
24 | ||
25 | /* Re-construct the password-file line for the given uid | |
26 | in the given buffer. This knows the format that the caller | |
27 | will expect, but this need not be the format of the password file. */ | |
a68b0d31 | 28 | |
bcaad6ee | 29 | int __getpw (__uid_t uid, char *buf); |
a68b0d31 | 30 | |
28f540f4 | 31 | int |
9d46370c | 32 | __getpw (__uid_t uid, char *buf) |
28f540f4 | 33 | { |
e4cf5070 UD |
34 | size_t buflen; |
35 | char *tmpbuf; | |
36 | struct passwd resbuf, *p; | |
28f540f4 RM |
37 | |
38 | if (buf == NULL) | |
39 | { | |
c4029823 | 40 | __set_errno (EINVAL); |
28f540f4 RM |
41 | return -1; |
42 | } | |
43 | ||
e4cf5070 UD |
44 | buflen = __sysconf (_SC_GETPW_R_SIZE_MAX); |
45 | tmpbuf = alloca (buflen); | |
46 | ||
738d1a5a | 47 | if (__getpwuid_r (uid, &resbuf, tmpbuf, buflen, &p) != 0) |
28f540f4 RM |
48 | return -1; |
49 | ||
0ea5db4f UD |
50 | if (p == NULL) |
51 | return -1; | |
52 | ||
d762684b UD |
53 | if (sprintf (buf, "%s:%s:%lu:%lu:%s:%s:%s", p->pw_name, p->pw_passwd, |
54 | (unsigned long int) p->pw_uid, (unsigned long int) p->pw_gid, | |
55 | p->pw_gecos, p->pw_dir, p->pw_shell) < 0) | |
28f540f4 RM |
56 | return -1; |
57 | ||
58 | return 0; | |
59 | } | |
a68b0d31 | 60 | weak_alias (__getpw, getpw) |
16848c98 UD |
61 | |
62 | link_warning (getpw, "the `getpw' function is dangerous and should not be used.") |