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537e7234 | 1 | /* Copyright (C) 1991,92,96,98,99,2000,2005 Free Software Foundation, Inc. |
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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 | |
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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. | |
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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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
7ce241a0 | 13 | |
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14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, write to the Free | |
16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
17 | 02111-1307 USA. */ | |
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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)) |
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40 | { |
41 | __set_errno (EINVAL); | |
42 | return -1; | |
43 | } | |
44 | ||
45 | flockfile (stream); | |
46 | ||
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47 | if (gr->gr_name[0] == '+' || gr->gr_name[0] == '-') |
48 | retval = fprintf (stream, "%s:%s::", | |
49 | gr->gr_name, _S (gr->gr_passwd)); | |
50 | else | |
51 | retval = fprintf (stream, "%s:%s:%lu:", | |
52 | gr->gr_name, _S (gr->gr_passwd), | |
53 | (unsigned long int) gr->gr_gid); | |
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54 | if (__builtin_expect (retval, 0) < 0) |
55 | { | |
56 | funlockfile (stream); | |
57 | return -1; | |
58 | } | |
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59 | |
60 | if (gr->gr_mem != NULL) | |
61 | { | |
62 | int i; | |
63 | ||
64 | for (i = 0 ; gr->gr_mem[i] != NULL; i++) | |
8ba3c7d9 | 65 | if (fprintf (stream, i == 0 ? "%s" : ",%s", gr->gr_mem[i]) < 0) |
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66 | { |
67 | /* What else can we do? */ | |
68 | funlockfile (stream); | |
69 | return -1; | |
70 | } | |
71 | } | |
72 | ||
73 | retval = fputc_unlocked ('\n', stream); | |
74 | ||
75 | funlockfile (stream); | |
76 | ||
77 | return retval < 0 ? -1 : 0; | |
78 | } |