Date: Thu, 26 Oct 1995 10:06:28 +0100 From: vcapuano@esoc.esa.de (Vincenzo Capuano) To: freebsd-hackers@freebsd.org Subject: _SC_PAGESIZE patch to sysconf(3) Message-ID: <9510260906.AA17142@dpd16.dpd.esoc.esa.de>
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I was porting a program I developed on Solaris to FreeBSD when I got into a
missing call: sysconf(_SC_PAGESIZE). I know I could use getpagesize(3), but
I then had to ifdef my code.
So, if you like it here is a patch to sysconf that will recognise _SC_PAGESIZE.
Here are the diffs:
-------------------------------------------------------------------------------
*** /usr/src/lib/libc/gen/sysconf.c.orig Wed Oct 25 20:57:03 1995
--- /usr/src/lib/libc/gen/sysconf.c Wed Oct 25 21:15:33 1995
***************
*** 179,184 ****
--- 179,188 ----
return (-1);
return (value);
break;
+ case _SC_PAGESIZE:
+ mib[0] = CTL_HW;
+ mib[1] = HW_PAGESIZE;
+ break;
default:
errno = EINVAL;
return (-1);
*** /usr/src/lib/libc/gen/sysconf.3.orig Thu Oct 26 00:13:26 1995
--- /usr/src/lib/libc/gen/sysconf.3 Thu Oct 26 00:20:38 1995
***************
*** 142,147 ****
--- 142,150 ----
.It Li _SC_2_UPE
Return 1 if the system supports the User Portability Utilities Option,
otherwise \-1.
+ .It Li _SC_PAGESIZE
+ Number of bytes in a system memory page. Page granularity is the granularity
+ of many of the memory management calls. See also getpagesize(3).
.El
.Sh RETURN VALUES
If the call to
*** /usr/include/sys/unistd.h.orig Wed Oct 25 21:00:56 1995
--- /usr/include/sys/unistd.h Thu Oct 26 00:27:55 1995
***************
*** 115,120 ****
--- 115,121 ----
#define _SC_2_UPE 25
#define _SC_STREAM_MAX 26
#define _SC_TZNAME_MAX 27
+ #define _SC_PAGESIZE 28
/* configurable system strings */
#define _CS_PATH 1
-------------------------------------------------------------------------------
They apply to -current.
Vincenzo
========================================================================
Vincenzo Capuano, Vitrociset /\_/\ Tel: +49 (0)6151 90-3159
European Space Agency - ESOC ( o.o ) Fax: +49 (0)6151 90-3414
Robert Bosch Strasse 5 > - < Email: vcapuano@vmprofs.esoc.esa.de
D-64293 Darmstadt, Germany
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