[metaconfig.git] / U / modified / d_access.U

?RCS: $Id: d_access.U,v 3.0 1993/08/18 12:05:42 ram Exp $
?RCS:
?RCS: Copyright (c) 1991-1993, Raphael Manfredi
?RCS: 
?RCS: You may redistribute only under the terms of the Artistic Licence,
?RCS: as specified in the README file that comes with the distribution.
?RCS: You may reuse parts of this distribution only within the terms of
?RCS: that same Artistic Licence; a copy of which may be found at the root
?RCS: of the source tree for dist 3.0.
?RCS:
?RCS: $Log: d_access.U,v $
?RCS: Revision 3.0  1993/08/18  12:05:42  ram
?RCS: Baseline for dist 3.0 netwide release.
?RCS:
?MAKE:d_access: test +cc cat +cppflags h_fcntl h_sysfile i_stdlib rm Inlibc Findhdr
?MAKE:	-pick add $@ %<
?S:d_access:
?S:	This variable conditionally defines HAS_ACCESS if the access() system
?S:	call is available to check for access permissions using real IDs.
?S:.
?C:HAS_ACCESS:
?C:	This manifest constant lets the C program know that the access()
?C:	system call is available to check for accessibility using real UID/GID.
?C:	(always present on UNIX.)
?C:.
?H:#$d_access HAS_ACCESS		/**/
?H:.
?W:%<:R_OK W_OK X_OK F_OK
?LINT:set d_access
?LINT:change h_fcntl h_sysfile
: access call always available on UNIX
set access d_access
eval $inlibc

: locate the flags for 'access()'
case "$d_access" in
"$define")
	echo " "
	$cat >access.c <<EOCP
#include <sys/types.h>
#ifdef I_FCNTL
#include <fcntl.h>
#endif
#ifdef I_SYS_FILE
#include <sys/file.h>
#endif
#ifdef I_UNISTD
#include <unistd.h>
#endif
#$i_stdlib I_STDLIB
#ifdef I_STDLIB
#include <stdlib.h>
#endif
int main() {
	exit(R_OK);
}
EOCP
	: check sys/file.h first, no particular reason here
	if $test `./findhdr sys/file.h` && \
		$cc -o access $cppflags -DI_SYS_FILE access.c >/dev/null 2>&1 ; then
		h_sysfile=true;
		echo "<sys/file.h> defines the *_OK access constants." >&4
	elif $test `./findhdr fcntl.h` && \
		$cc -o access $cppflags -DI_FCNTL access.c >/dev/null 2>&1 ; then
		h_fcntl=true;
		echo "<fcntl.h> defines the *_OK access constants." >&4
@if I_UNISTD
	elif $test `./findhdr unistd.h` && \
		$cc -o access $cppflags -DI_UNISTD access.c >/dev/null 2>&1 ; then
		echo "<unistd.h> defines the *_OK access constants." >&4
@end
	else
		echo "I can't find the four *_OK access constants--I'll use mine." >&4
	fi
	;;
esac
$rm -f access*
Commit	Line	Data
959f3c4c JH	1	?RCS: $Id: d_access.U,v 3.0 1993/08/18 12:05:42 ram Exp $
	2	?RCS:
	3	?RCS: Copyright (c) 1991-1993, Raphael Manfredi
	4	?RCS:
	5	?RCS: You may redistribute only under the terms of the Artistic Licence,
	6	?RCS: as specified in the README file that comes with the distribution.
	7	?RCS: You may reuse parts of this distribution only within the terms of
	8	?RCS: that same Artistic Licence; a copy of which may be found at the root
	9	?RCS: of the source tree for dist 3.0.
	10	?RCS:
	11	?RCS: $Log: d_access.U,v $
	12	?RCS: Revision 3.0 1993/08/18 12:05:42 ram
	13	?RCS: Baseline for dist 3.0 netwide release.
	14	?RCS:
1273bb5e	15	?MAKE:d_access: test +cc cat +cppflags h_fcntl h_sysfile i_stdlib rm Inlibc Findhdr
959f3c4c JH	16	?MAKE: -pick add $@ %<
	17	?S:d_access:
	18	?S: This variable conditionally defines HAS_ACCESS if the access() system
	19	?S: call is available to check for access permissions using real IDs.
	20	?S:.
	21	?C:HAS_ACCESS:
	22	?C: This manifest constant lets the C program know that the access()
	23	?C: system call is available to check for accessibility using real UID/GID.
	24	?C: (always present on UNIX.)
	25	?C:.
	26	?H:#$d_access HAS_ACCESS /**/
	27	?H:.
	28	?W:%<:R_OK W_OK X_OK F_OK
	29	?LINT:set d_access
	30	?LINT:change h_fcntl h_sysfile
	31	: access call always available on UNIX
	32	set access d_access
	33	eval $inlibc
	34
	35	: locate the flags for 'access()'
	36	case "$d_access" in
	37	"$define")
	38	echo " "
1273bb5e	39	$cat >access.c <<EOCP
959f3c4c JH	40	#include <sys/types.h>
	41	#ifdef I_FCNTL
	42	#include <fcntl.h>
	43	#endif
	44	#ifdef I_SYS_FILE
	45	#include <sys/file.h>
	46	#endif
	47	#ifdef I_UNISTD
	48	#include <unistd.h>
	49	#endif
1273bb5e JH	50	#$i_stdlib I_STDLIB
	51	#ifdef I_STDLIB
	52	#include <stdlib.h>
	53	#endif
959f3c4c JH	54	int main() {
	55	exit(R_OK);
	56	}
	57	EOCP
	58	: check sys/file.h first, no particular reason here
	59	if $test `./findhdr sys/file.h` && \
ff19f974	60	$cc -o access $cppflags -DI_SYS_FILE access.c >/dev/null 2>&1 ; then
959f3c4c JH	61	h_sysfile=true;
	62	echo "<sys/file.h> defines the *_OK access constants." >&4
	63	elif $test `./findhdr fcntl.h` && \
ff19f974	64	$cc -o access $cppflags -DI_FCNTL access.c >/dev/null 2>&1 ; then
959f3c4c JH	65	h_fcntl=true;
	66	echo "<fcntl.h> defines the *_OK access constants." >&4
	67	@if I_UNISTD
	68	elif $test `./findhdr unistd.h` && \
ff19f974	69	$cc -o access $cppflags -DI_UNISTD access.c >/dev/null 2>&1 ; then
959f3c4c JH	70	echo "<unistd.h> defines the *_OK access constants." >&4
	71	@end
	72	else
	73	echo "I can't find the four *_OK access constants--I'll use mine." >&4
	74	fi
	75	;;
	76	esac
	77	$rm -f access*
	78