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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /sysdeps/posix/mk-stdiolim.c
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initial import
Diffstat (limited to 'sysdeps/posix/mk-stdiolim.c')
-rw-r--r--sysdeps/posix/mk-stdiolim.c71
1 files changed, 71 insertions, 0 deletions
diff --git a/sysdeps/posix/mk-stdiolim.c b/sysdeps/posix/mk-stdiolim.c
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+++ b/sysdeps/posix/mk-stdiolim.c
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+/* Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <posix1_lim.h>
+
+int
+main()
+{
+ /* These values correspond to the code in sysdeps/posix/tempname.c.
+ Change the values here if you change that code. */
+ printf("#define L_tmpnam %u\n", sizeof("/usr/tmp/") + 8);
+ printf("#define TMP_MAX %u\n", 62 * 62 * 62);
+
+ puts ("#ifdef __USE_POSIX");
+ printf("#define L_ctermid %u\n", sizeof("/dev/tty"));
+ printf("#define L_cuserid 9\n");
+ puts ("#endif");
+
+ /* POSIX does not require that OPEN_MAX and PATH_MAX be defined, so
+ <local_lim.h> will not define them if they are run-time variant (which
+ is the case in the Hurd). ANSI still requires that FOPEN_MAX and
+ FILENAME_MAX be defined, however. */
+
+ printf("#define FOPEN_MAX %u\n",
+#ifdef OPEN_MAX
+
+ OPEN_MAX
+#else
+ /* This is the minimum number of files that the implementation
+ guarantees can be open simultaneously. OPEN_MAX not being
+ defined means the maximum is run-time variant; but POSIX.1
+ requires that it never be less than _POSIX_OPEN_MAX, so that is
+ a good minimum to use. */
+ _POSIX_OPEN_MAX
+#endif
+
+ );
+
+ printf("#define FILENAME_MAX %u\n",
+#ifdef PATH_MAX
+ PATH_MAX
+#else
+ /* This is supposed to be the size needed to hold the longest file
+ name string the implementation guarantees can be opened.
+ PATH_MAX not being defined means the actual limit on the length
+ of a file name is runtime-variant (or it is unlimited). ANSI
+ says in such a case FILENAME_MAX should be a good size to
+ allocate for a file name string. POSIX.1 guarantees that a
+ file name up to _POSIX_PATH_MAX chars long can be opened, so
+ this value must be at least that. */
+ 1024 /* _POSIX_PATH_MAX is 255. */
+#endif
+ );
+
+ exit(0);
+}