[ksh93-integration-discuss] Re: Planning the final ARC case forthe first ksh93-integration putback...

[Glenn Fowler]

On Thu, 16 Nov 2006 10:06:55 -0500 James Carlson wrote:
> If there were just one standard, things would be much simpler.  :-/

right, like one true windows (emoticon for barf)

I attached a test script that spans the xpg variants per <sys/features_tests.h>
the test output on a solaris 10 sun4 machine is
---
XPG=000 PASS_MAX=256 PATH=/usr/xpg4/bin:/usr/ccs/bin:/usr/bin:/opt/SUNWspro/bin
XPG=300 PASS_MAX=256 PATH=/usr/xpg4/bin:/usr/ccs/bin:/usr/bin:/opt/SUNWspro/bin
XPG=400 PASS_MAX=256 PATH=/usr/xpg4/bin:/usr/ccs/bin:/usr/bin:/opt/SUNWspro/bin
XPG=402 PASS_MAX=256 PATH=/usr/xpg4/bin:/usr/ccs/bin:/usr/bin:/opt/SUNWspro/bin
XPG=500 PASS_MAX=8   PATH=/usr/xpg4/bin:/usr/ccs/bin:/usr/bin:/opt/SUNWspro/bin
XPG=600 PASS_MAX=256 PATH=/usr/xpg6/bin:/usr/xpg4/bin:/usr/ccs/bin:/usr/bin:/opt/SUNWspro/bin
    bin PASS_MAX=256 PATH=/usr/xpg4/bin:/usr/ccs/bin:/usr/bin:/opt/SUNWspro/bin
   xpg4 PASS_MAX=8   PATH=/usr/xpg4/bin:/usr/ccs/bin:/usr/bin:/opt/SUNWspro/bin
   xpg6 PASS_MAX=256 PATH=/usr/xpg6/bin:/usr/xpg4/bin:/usr/ccs/bin:/usr/bin:/opt/SUNWspro/bin
---
there is a mismatch between xpg4 compiled user programs and /usr/xpg4/bin/getconf
maybe I didn't get the feature test macros right for xpg4/xpg4v2?
could you run the script on a solaris 11 machine and post the output

it is getting a bit clearer:
a user application with PATH=$(getconf PATH) can use getconf to
check the parameters for any other utility/application on $PATH
but once PATH is modified, some utilities/applications may not
correspond to getconf

thanks

-- Glenn Fowler -- AT&T Research, Florham Park NJ --

---
cat > testconf.c <<'!'
/*
 * Feature Test Macro				     Specification
 * ------------------------------------------------  -------------
 * _XOPEN_SOURCE                                         XPG3
 * _XOPEN_SOURCE && _XOPEN_VERSION = 4                   XPG4
 * _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED = 1           XPG4v2
 * _XOPEN_SOURCE = 500                                   XPG5
 * _XOPEN_SOURCE = 600  (or POSIX_C_SOURCE=200112L)      XPG6
 */

#if XPG == 300
#  define _XOPEN_SOURCE			1
#elif XPG == 400
#  define _XOPEN_SOURCE			1
#  define _XOPEN_VERSION		4
#elif XPG == 402
#  define _XOPEN_SOURCE			1
#  define _XOPEN_SOURCE_EXTENDED	1
#elif XPG == 500
#  define _XOPEN_SOURCE			500
#elif XPG == 600
#  define _XOPEN_SOURCE			600
#else
#  undef  XPG
#  define XPG				0
#endif

#include <stdio.h>
#include <unistd.h>

int
main()
{
	char	buf[1024];
	size_t	n;
	long	v;

	printf("XPG=%03d ", XPG);
	v = sysconf(_SC_PASS_MAX);
	printf("PASS_MAX=%-3ld ", v);
	n = confstr(_CS_PATH, buf, sizeof(buf));
	printf("PATH=%-*.*s\n", n, n, buf);
	return 0;
}
!

for xpg in 000 300 400 402 500 600
do
	case $xpg in
	600)	cc=c99 ;;
	*)	cc=cc ;;
	esac
	$cc -DXPG=$xpg -o testconf.exe testconf.c 2>/dev/null
	./testconf.exe
done

for xpg in "" xpg4 xpg6
do
	getconf=/usr
	case $xpg in
	"")	xpg=bin ;;
	*)	getconf=$getconf/$xpg ;;
	esac
	getconf=$getconf/bin/getconf
	printf '%7s PASS_MAX=%-3d PATH=%s\n' "$xpg" "$($getconf PASS_MAX)" "$($getconf PATH)"
done