.
[glibc/history.git] / shadow / fgetspent_r.c
blob16747e10cb8a39cf9b49812b54cc202229686faa
1 /* Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
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.
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 Lesser General Public License for more details.
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. */
19 #include <ctype.h>
20 #include <errno.h>
21 #include <shadow.h>
22 #include <stdio.h>
24 #ifdef USE_IN_LIBIO
25 # define flockfile(s) _IO_flockfile (s)
26 # define funlockfile(s) _IO_funlockfile (s)
27 #endif
29 /* Define a line parsing function using the common code
30 used in the nss_files module. */
32 #define STRUCTURE spwd
33 #define ENTNAME spent
34 #define EXTERN_PARSER 1
35 struct spent_data {};
37 #include <nss/nss_files/files-parse.c>
40 /* Read one shadow entry from the given stream. */
41 int
42 __fgetspent_r (FILE *stream, struct spwd *resbuf, char *buffer, size_t buflen,
43 struct spwd **result)
45 char *p;
47 flockfile (stream);
50 buffer[buflen - 1] = '\xff';
51 p = fgets_unlocked (buffer, buflen, stream);
52 if (p == NULL && feof_unlocked (stream))
54 funlockfile (stream);
55 *result = NULL;
56 __set_errno (ENOENT);
57 return errno;
59 if (p == NULL || buffer[buflen - 1] != '\xff')
61 funlockfile (stream);
62 *result = NULL;
63 __set_errno (ERANGE);
64 return errno;
67 /* Skip leading blanks. */
68 while (isspace (*p))
69 ++p;
70 } while (*p == '\0' || *p == '#' || /* Ignore empty and comment lines. */
71 /* Parse the line. If it is invalid, loop to
72 get the next line of the file to parse. */
73 ! parse_line (buffer, (void *) resbuf, NULL, 0, &errno));
75 funlockfile (stream);
77 *result = resbuf;
78 return 0;
80 weak_alias (__fgetspent_r, fgetspent_r)