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-rw-r--r--libpwdgrp/pwd_grp_internal.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/libpwdgrp/pwd_grp_internal.c b/libpwdgrp/pwd_grp_internal.c
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+++ b/libpwdgrp/pwd_grp_internal.c
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1/* vi: set sw=4 ts=4: */
2/* Copyright (C) 2003 Manuel Novoa III
3 *
4 * Licensed under GPL v2, or later. See file LICENSE in this tarball.
5 */
6
7/* Nov 6, 2003 Initial version.
8 *
9 * NOTE: This implementation is quite strict about requiring all
10 * field seperators. It also does not allow leading whitespace
11 * except when processing the numeric fields. glibc is more
12 * lenient. See the various glibc difference comments below.
13 *
14 * TODO:
15 * Move to dynamic allocation of (currently statically allocated)
16 * buffers; especially for the group-related functions since
17 * large group member lists will cause error returns.
18 *
19 */
20
21#ifndef GETXXKEY_R_FUNC
22#error GETXXKEY_R_FUNC is not defined!
23#endif
24
25int GETXXKEY_R_FUNC(DO_GETXXKEY_R_KEYTYPE key,
26 GETXXKEY_R_ENTTYPE *__restrict resultbuf,
27 char *__restrict buffer, size_t buflen,
28 GETXXKEY_R_ENTTYPE **__restrict result)
29{
30 FILE *stream;
31 int rv;
32
33 *result = NULL;
34
35 stream = fopen(DO_GETXXKEY_R_PATHNAME, "r");
36 if (!stream)
37 return errno;
38 while (1) {
39 rv = __pgsreader(GETXXKEY_R_PARSER, resultbuf, buffer, buflen, stream);
40 if (!rv) {
41 if (GETXXKEY_R_TEST(resultbuf)) { /* Found key? */
42 *result = resultbuf;
43 break;
44 }
45 } else {
46 if (rv == ENOENT) { /* end-of-file encountered. */
47 rv = 0;
48 }
49 break;
50 }
51 }
52 fclose(stream);
53
54 return rv;
55}
56
57#undef GETXXKEY_R_FUNC
58#undef GETXXKEY_R_PARSER
59#undef GETXXKEY_R_ENTTYPE
60#undef GETXXKEY_R_TEST
61#undef DO_GETXXKEY_R_KEYTYPE
62#undef DO_GETXXKEY_R_PATHNAME