1 /* Copyright (C) 1991, 1992 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 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.
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.
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
16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
17 Cambridge, MA 02139, USA. */
30 CONST enum { SYSCONF, CONFSTR, PATHCONF } call;
33 static struct conf vars[] =
35 { "LINK_MAX", _PC_LINK_MAX, PATHCONF },
36 { "MAX_CANON", _PC_MAX_CANON, PATHCONF },
37 { "MAX_INPUT", _PC_MAX_INPUT, PATHCONF },
38 { "NAME_MAX", _PC_NAME_MAX, PATHCONF },
39 { "PATH_MAX", _PC_PATH_MAX, PATHCONF },
40 { "PIPE_BUF", _PC_PIPE_BUF, PATHCONF },
41 { "_POSIX_CHOWN_RESTRICTED", _PC_CHOWN_RESTRICTED, PATHCONF },
42 { "_POSIX_NO_TRUNC", _PC_NO_TRUNC, PATHCONF },
43 { "_POSIX_VDISABLE", _PC_VDISABLE, PATHCONF },
45 { "ARG_MAX", _SC_ARG_MAX, SYSCONF },
46 { "CHILD_MAX", _SC_CHILD_MAX, SYSCONF },
47 { "CLK_TCK", _SC_CLK_TCK, SYSCONF },
48 { "NGROUPS_MAX", _SC_NGROUPS_MAX, SYSCONF },
49 { "OPEN_MAX", _SC_OPEN_MAX, SYSCONF },
50 { "_POSIX_JOB_CONTROL", _SC_JOB_CONTROL, SYSCONF },
51 { "_POSIX_SAVED_IDS", _SC_SAVED_IDS, SYSCONF },
52 { "_POSIX_VERSION", _SC_VERSION, SYSCONF },
54 { "PATH", _CS_PATH, CONFSTR },
59 static CONST char *program;
64 fprintf (stderr, "Usage: %s variable_name [pathname]\n", program);
69 DEFUN(main, (argc, argv), int argc AND char **argv)
71 register CONST struct conf *c;
73 program = strrchr (argv[0], '/');
79 if (argc < 2 || argc > 3)
82 for (c = vars; c->name != NULL; ++c)
83 if (!strcmp (c->name, argv[1]))
93 value = pathconf (argv[2], c->call_name);
96 fprintf (stderr, "%s: pathconf: %s: %s\n",
97 program, argv[2], strerror (errno));
100 printf ("%ld\n", value);
106 value = sysconf (c->call_name);
107 printf ("%ld\n", value);
113 clen = confstr (c->call_name, (char *) NULL, 0);
114 cvalue = (char *) malloc (clen);
117 fprintf (stderr, "%s: malloc: %s\n",
118 program, strerror (errno));
121 if (confstr (c->call_name, cvalue, clen) != clen)
123 fprintf (stderr, "%s: confstr: %s\n",
124 program, strerror (errno));
127 printf ("%.*s\n", (int) clen, cvalue);
132 fprintf (stderr, "%s: Unrecognized variable `%s'\n", program, argv[1]);