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Deal with NetBSD byte-swapped a.out magic when checking the MID to exclude

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linux binaries from the *BSD a.out loader. This is a hack, but lets me run
static NetBSD binaries.  Dynamic binaries are a much bigger problem because
the shared libraries would conflict with our native libraries, so a
/compat/netbsd alternate namespace and translation would be needed.
This commit is contained in:
Peter Wemm 1996-03-03 20:06:53 +00:00
parent ef5dc8a96d
commit 185dc76169
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=14363
1 changed files with 4 additions and 2 deletions
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6
sys/kern/imgact_aout.c
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@ -28,7 +28,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: imgact_aout.c,v 1.22 1996/01/19 03:57:54 dyson Exp $
* $Id: imgact_aout.c,v 1.23 1996/03/02 19:38:06 peter Exp $
*/
#include <sys/param.h>
@ -66,9 +66,11 @@ exec_aout_imgact(imgp)
* Linux and *BSD binaries look very much alike,
* only the machine id is different:
* 0x64 for Linux, 0x86 for *BSD, 0x00 for BSDI.
* NetBSD is in network byte order.. ugh.
*/
if (((a_out->a_magic >> 16) & 0xff) != 0x86 &&
((a_out->a_magic >> 16) & 0xff) != 0)
((a_out->a_magic >> 16) & 0xff) != 0 &&
((((int)ntohl(a_out->a_magic)) >> 16) & 0xff) != 0x86)
return -1;
/*