Hi! Played around with prex and make small sysconf() call. May be it will
be useful for someone.
diff -Nru prex-0.9.0/usr/include/unistd.h prex-0.9.0.toch/usr/include/unistd.h
--- prex-0.9.0/usr/include/unistd.h 2009-10-01 12:15:49.000000000 +0000
+++ prex-0.9.0.toch/usr/include/unistd.h 2009-10-08 19:51:26.000000000
+0000
@@ -43,6 +43,17 @@
#define NULL 0 /* null pointer constant */
#endif
+#define _SC_ARG_MAX 1
+#define _SC_CHILD_MAX 2
+#define _SC_CLK_TCK 3
+#define _SC_STREAM_MAX 4
+#define _SC_TZNAME_MAX 5
+#define _SC_OPEN_MAX 6
+#define _SC_JOB_CONTROL 7
+#define _SC_SAVED_IDS 8
+#define _SC_VERSION 9
+
+
__BEGIN_DECLS
int access(const char *, int);
unsigned int alarm(unsigned int);
@@ -85,7 +96,7 @@
pid_t setsid(void);
int setuid(uid_t);
unsigned int sleep(unsigned int);
-/* long sysconf(int); */
+long sysconf(int);
pid_t tcgetpgrp(int);
int tcsetpgrp(int, pid_t);
/* char *ttyname(int); */
diff -Nru prex-0.9.0/usr/lib/posix/gen/Makefile.inc
prex-0.9.0.toch/usr/lib/posix/gen/Makefile.inc
--- prex-0.9.0/usr/lib/posix/gen/Makefile.inc 2009-06-12 23:47:50.000000000
+0000
+++ prex-0.9.0.toch/usr/lib/posix/gen/Makefile.inc 2009-10-08
18:55:50.000000000 +0000
@@ -1,4 +1,4 @@
VPATH:= $(SRCDIR)/usr/lib/posix/gen:$(VPATH)
SRCS+= __posix_init.c __posix_call.c uname.c syslog.c alarm.c \
- getrlimit.c
+ getrlimit.c sysconf.c
diff -Nru prex-0.9.0/usr/lib/posix/gen/sysconf.c
prex-0.9.0.toch/usr/lib/posix/gen/sysconf.c
--- prex-0.9.0/usr/lib/posix/gen/sysconf.c 1970-01-01 00:00:00.000000000
+0000
+++ prex-0.9.0.toch/usr/lib/posix/gen/sysconf.c 2009-10-22 18:24:20.000000000
+0000
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2009, Dmitriy Tochansky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the author nor the names of any co-contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <unistd.h>
+#include <sys/time.h>
+#include <sys/errno.h>
+
+long
+sysconf(int name)
+{
+ switch( name )
+ {
+ case _SC_ARG_MAX: return ARG_MAX;
+ case _SC_CHILD_MAX: return MAXTASKS;
+ case _SC_STREAM_MAX: return OPEN_MAX;
+ case _SC_CLK_TCK: return CLK_TCK;
+ case _SC_OPEN_MAX: return OPEN_MAX;
+ default:
+ return EINVAL;
+
+ }
+ return -1;
+}------------------------------------------------------------------------------
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