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a711dd4b | 1 | /* Copyright (C) 1991, 92, 96, 98, 99, 2000 Free Software Foundation, Inc. |
7ce241a0 UD |
2 | This file is part of the GNU C Library. |
3 | ||
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. | |
8 | ||
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. | |
13 | ||
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. */ | |
18 | ||
19 | #include <errno.h> | |
20 | #include <stdio.h> | |
21 | #include <grp.h> | |
22 | ||
23 | #ifdef USE_IN_LIBIO | |
24 | # define flockfile(s) _IO_flockfile (s) | |
25 | # define funlockfile(s) _IO_funlockfile (s) | |
26 | #endif | |
27 | ||
28 | #define _S(x) x ? x : "" | |
29 | ||
30 | /* Write an entry to the given stream. | |
31 | This must know the format of the group file. */ | |
32 | int | |
33 | putgrent (gr, stream) | |
34 | const struct group *gr; | |
35 | FILE *stream; | |
36 | { | |
37 | int retval; | |
38 | ||
a711dd4b | 39 | if (__builtin_expect (gr == NULL, 0) || __builtin_expect (stream == NULL, 0)) |
7ce241a0 UD |
40 | { |
41 | __set_errno (EINVAL); | |
42 | return -1; | |
43 | } | |
44 | ||
45 | flockfile (stream); | |
46 | ||
47 | retval = fprintf (stream, "%s:%s:%u:", | |
48 | gr->gr_name, _S (gr->gr_passwd), gr->gr_gid); | |
a711dd4b UD |
49 | if (__builtin_expect (retval, 0) < 0) |
50 | { | |
51 | funlockfile (stream); | |
52 | return -1; | |
53 | } | |
7ce241a0 UD |
54 | |
55 | if (gr->gr_mem != NULL) | |
56 | { | |
57 | int i; | |
58 | ||
59 | for (i = 0 ; gr->gr_mem[i] != NULL; i++) | |
8ba3c7d9 | 60 | if (fprintf (stream, i == 0 ? "%s" : ",%s", gr->gr_mem[i]) < 0) |
7ce241a0 UD |
61 | { |
62 | /* What else can we do? */ | |
63 | funlockfile (stream); | |
64 | return -1; | |
65 | } | |
66 | } | |
67 | ||
68 | retval = fputc_unlocked ('\n', stream); | |
69 | ||
70 | funlockfile (stream); | |
71 | ||
72 | return retval < 0 ? -1 : 0; | |
73 | } |