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Dump cores for 32-bit processes.

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This commit is contained in:
eeh 1999-12-30 16:00:23 +00:00
parent fb98025cac
commit f293acc959
1 changed files with 89 additions and 3 deletions
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92
sys/kern/kern_sig.c
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@ -1,4 +1,4 @@
/* $NetBSD: kern_sig.c,v 1.94 1999/09/28 14:47:03 bouyer Exp $ */
/* $NetBSD: kern_sig.c,v 1.95 1999/12/30 16:00:23 eeh Exp $ */
/*
* Copyright (c) 1982, 1986, 1989, 1991, 1993
@ -42,6 +42,7 @@
#include "opt_ktrace.h"
#include "opt_compat_sunos.h"
#include "opt_compat_netbsd32.h"
#define SIGPROP /* include signal properties table */
#include <sys/param.h>
@ -80,7 +81,9 @@
void stop __P((struct proc *p));
void killproc __P((struct proc *, char *));
static int build_corename __P((char *));
#if COMPAT_NETBSD32
static int coredump32 __P((struct proc *, struct vnode *));
#endif
sigset_t contsigmask, stopsigmask, sigcantmask;
struct pool sigacts_pool; /* memory pool for sigacts structures */
@ -1240,7 +1243,6 @@ sigexit(p, signum)
register struct proc *p;
int signum;
{
p->p_acflag |= AXSIG;
if (sigprop[signum] & SA_CORE) {
p->p_sigacts->ps_sig = signum;
@ -1314,6 +1316,11 @@ coredump(p)
VOP_LEASE(vp, p, cred, LEASE_WRITE);
VOP_SETATTR(vp, &vattr, cred, p);
p->p_acflag |= ACORE;
#if COMPAT_NETBSD32
if (p->p_flag & P_32)
return (coredump32(p, vp));
#endif
#if 0
/*
* XXX
@ -1378,6 +1385,85 @@ out:
return (error);
}
#if COMPAT_NETBSD32
/*
* Same as coredump, but generates a 32-bit image.
*/
int
coredump32(p, vp)
register struct proc *p;
register struct vnode *vp;
{
register struct vmspace *vm = p->p_vmspace;
register struct ucred *cred = p->p_cred->pc_ucred;
int error, error1;
struct core32 core;
#if 0
/*
* XXX
* It would be nice if we at least dumped the signal state (and made it
* available at run time to the debugger, as well), but this code
* hasn't actually had any effect for a long time, since we don't dump
* the user area. For now, it's dead.
*/
memcpy(&p->p_addr->u_kproc.kp_proc, p, sizeof(struct proc));
fill_eproc(p, &p->p_addr->u_kproc.kp_eproc);
#endif
core.c_midmag = 0;
strncpy(core.c_name, p->p_comm, MAXCOMLEN);
core.c_nseg = 0;
core.c_signo = p->p_sigacts->ps_sig;
core.c_ucode = p->p_sigacts->ps_code;
core.c_cpusize = 0;
core.c_tsize = (u_long)ctob(vm->vm_tsize);
core.c_dsize = (u_long)ctob(vm->vm_dsize);
core.c_ssize = (u_long)round_page(ctob(vm->vm_ssize));
error = cpu_coredump32(p, vp, cred, &core);
if (error)
goto out;
if (core.c_midmag == 0) {
/* XXX
* cpu_coredump() didn't bother to set the magic; assume
* this is a request to do a traditional dump. cpu_coredump()
* is still responsible for setting sensible values in
* the core header.
*/
if (core.c_cpusize == 0)
core.c_cpusize = USPACE; /* Just in case */
error = vn_rdwr(UIO_WRITE, vp, vm->vm_daddr,
(int)core.c_dsize,
(off_t)core.c_cpusize, UIO_USERSPACE,
IO_NODELOCKED|IO_UNIT, cred, NULL, p);
if (error)
goto out;
error = vn_rdwr(UIO_WRITE, vp,
(caddr_t) trunc_page(USRSTACK - ctob(vm->vm_ssize)),
core.c_ssize,
(off_t)(core.c_cpusize + core.c_dsize), UIO_USERSPACE,
IO_NODELOCKED|IO_UNIT, cred, NULL, p);
} else {
/*
* uvm_coredump() spits out all appropriate segments.
* All that's left to do is to write the core header.
*/
error = uvm_coredump32(p, vp, cred, &core);
if (error)
goto out;
error = vn_rdwr(UIO_WRITE, vp, (caddr_t)&core,
(int)core.c_hdrsize, (off_t)0,
UIO_SYSSPACE, IO_NODELOCKED|IO_UNIT, cred, NULL, p);
}
out:
VOP_UNLOCK(vp, 0);
error1 = vn_close(vp, FWRITE, cred, p);
if (error == 0)
error = error1;
return (error);
}
#endif
/*
* Nonexistent system call-- signal process (may want to handle it).
* Flag error in case process won't see signal immediately (blocked or ignored).