PERFORCE change 77425 for review
Peter Wemm
peter at FreeBSD.org
Tue May 24 23:28:58 GMT 2005
http://perforce.freebsd.org/chv.cgi?CH=77425
Change 77425 by peter at peter_melody on 2005/05/24 23:28:19
Only allow 32 bit ptrace clients to connect to 32 bit targets.
Otherwise they cannot see the full register context. 64 bit gdb
can debug 32 bit targets, but not the other way around.
Affected files ...
.. //depot/projects/hammer/sys/kern/sys_process.c#26 edit
Differences ...
==== //depot/projects/hammer/sys/kern/sys_process.c#26 (text+ko) ====
@@ -380,8 +380,7 @@
#ifdef COMPAT_IA32
int wrap32 = 0;
- if (td->td_proc->p_sysent == &ia32_freebsd_sysvec &&
- curthread->td_proc->p_sysent == &ia32_freebsd_sysvec)
+ if (td->td_proc->p_sysent == &ia32_freebsd_sysvec)
wrap32 = 1;
#endif
addr = &r;
@@ -539,9 +538,13 @@
}
#ifdef COMPAT_IA32
- if (td->td_proc->p_sysent == &ia32_freebsd_sysvec &&
- td2->td_proc->p_sysent == &ia32_freebsd_sysvec)
+ if (td->td_proc->p_sysent == &ia32_freebsd_sysvec) {
+ if (td2->td_proc->p_sysent != &ia32_freebsd_sysvec) {
+ error = EINVAL;
+ goto fail;
+ }
wrap32 = 1;
+ }
#endif
/*
* Permissions check
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