2 * Copyright (c) 1993 Jan-Simon Pendry
4 * The Regents of the University of California. All rights reserved.
6 * This code is derived from software contributed to Berkeley by
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10 * modification, are permitted provided that the following conditions
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19 * This product includes software developed by the University of
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37 * @(#)procfs_regs.c 8.4 (Berkeley) 6/15/94
40 * $FreeBSD: src/sys/miscfs/procfs/procfs_regs.c,v 1.10.2.3 2002/01/22 17:22:59 nectar Exp $
41 * $DragonFly: src/sys/vfs/procfs/procfs_regs.c,v 1.8 2005/11/14 18:50:13 dillon Exp $
44 #include <sys/param.h>
46 #include <sys/vnode.h>
47 #include <machine/reg.h>
48 #include <vfs/procfs/procfs.h>
50 #include <vm/vm_extern.h>
53 procfs_doregs(struct proc *curp, struct proc *p, struct pfsnode *pfs,
61 /* Can't trace a process that's currently exec'ing. */
62 if ((p->p_flag & P_INEXEC) != 0)
64 if (!CHECKIO(curp, p) || p_trespass(curp->p_ucred, p->p_ucred))
69 kv += uio->uio_offset;
70 kl -= uio->uio_offset;
71 if (kl > uio->uio_resid)
76 error = procfs_read_regs(p, &r);
78 error = uiomove_frombuf(&r, sizeof(r), uio);
79 if (error == 0 && uio->uio_rw == UIO_WRITE) {
80 if ((p->p_flag & P_STOPPED) == 0)
83 error = procfs_write_regs(p, &r);
92 procfs_validregs(struct proc *p)
94 return ((p->p_flag & P_SYSTEM) == 0);