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If the magic number is 0xfeedface instead of 0xcafebabe, this means that

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the executable is not fat. The binary starts with an object header instead
of a mach fat header.
This commit is contained in:
manu 2002-10-29 19:28:19 +00:00
parent d285dd8c38
commit b57515f2c4
1 changed files with 33 additions and 20 deletions
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53
sys/kern/exec_macho.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: exec_macho.c,v 1.8 2002/10/05 22:34:05 chs Exp $ */
/* $NetBSD: exec_macho.c,v 1.9 2002/10/29 19:28:19 manu Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: exec_macho.c,v 1.8 2002/10/05 22:34:05 chs Exp $");
__KERNEL_RCSID(0, "$NetBSD: exec_macho.c,v 1.9 2002/10/29 19:28:19 manu Exp $");
#include <sys/param.h>
#include <sys/proc.h>
@ -98,9 +98,9 @@ static void
exec_macho_print_fat_arch(struct exec_macho_fat_arch *arch) {
printf("arch.cputype %x\n", be32toh(arch->cputype));
printf("arch.cpusubtype %d\n", be32toh(arch->cpusubtype));
printf("arch.offset 0x%x\n", be32toh(arch->offset));
printf("arch.size %d\n", be32toh(arch->size));
printf("arch.align 0x%x\n", be32toh(arch->align));
printf("arch.offset 0x%lx\n", be32toh(arch->offset));
printf("arch.size %ld\n", be32toh(arch->size));
printf("arch.align 0x%lx\n", be32toh(arch->align));
}
static void
@ -352,30 +352,43 @@ exec_macho_load_vnode(struct proc *p, struct exec_package *epp,
size_t size;
void *buf = &lc;
if (be32toh(fat->magic) != MACHO_FAT_MAGIC) {
DPRINTF(("bad exec_macho fat magic %x\n", fat->magic));
goto bad;
}
#ifdef DEBUG_MACHO
exec_macho_print_fat_header(fat);
#endif
for (i = 0; i < be32toh(fat->nfat_arch); i++, arch) {
if ((error = exec_read_from(p, vp, sizeof(*fat) +
sizeof(arch) * i, &arch, sizeof(arch))) != 0)
goto bad;
switch(be32toh(fat->magic)){
case MACHO_FAT_MAGIC:
for (i = 0; i < be32toh(fat->nfat_arch); i++, arch) {
if ((error = exec_read_from(p, vp, sizeof(*fat) +
sizeof(arch) * i, &arch, sizeof(arch))) != 0)
goto bad;
#ifdef DEBUG_MACHO
exec_macho_print_fat_arch(&arch);
exec_macho_print_fat_arch(&arch);
#endif
switch (be32toh(arch.cputype)) {
MACHO_MACHDEP_CASES
switch (be32toh(arch.cputype)) {
MACHO_MACHDEP_CASES
}
}
}
DPRINTF(("This MACH-O binary does not support your cpu"));
goto bad;
DPRINTF(("This MACH-O binary does not support your cpu"));
goto bad;
done:
break;
case MACHO_MOH_MAGIC:
/*
* This is not a FAT Mach-O binary, the file starts
* with the object header.
*/
arch.offset = 0;
break;
default:
DPRINTF(("bad exec_macho magic %x\n", fat->magic));
goto bad;
break;
}
if ((error = exec_read_from(p, vp, be32toh(arch.offset), &hdr,
sizeof(hdr))) != 0)
goto bad;