Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Remove PT_{READ,WRITE}_U.

This commit is contained in:
mycroft 1995-01-26 17:56:21 +00:00
parent 01c2162989
commit 42d23cb6e4
2 changed files with 2 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
sys/kern/sys_process.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: sys_process.c,v 1.43 1994/10/30 21:47:50 cgd Exp $ */
/* $NetBSD: sys_process.c,v 1.44 1995/01/26 17:56:21 mycroft Exp $ */
/*-
* Copyright (c) 1994 Christopher G. Demetriou. All rights reserved.
@ -130,10 +130,8 @@ ptrace(p, uap, retval)
case PT_READ_I:
case PT_READ_D:
case PT_READ_U:
case PT_WRITE_I:
case PT_WRITE_D:
case PT_WRITE_U:
case PT_CONTINUE:
case PT_KILL:
case PT_DETACH:
@ -207,53 +205,6 @@ ptrace(p, uap, retval)
uio.uio_procp = p;
return (procfs_domem(p, t, NULL, &uio));
case PT_READ_U:
/*
* The 4.4BSD PRM says that only the first 512 bytes
* of the user area are accessible for reading. This
* disagrees with common practice, and would render PT_READ_U
* almost worthless. Additionally, we _always_ require
* that the address be int-aligned.
*/
if ((u_long)SCARG(uap, addr) > USPACE - sizeof(int) ||
#ifdef m68k /* XXX */
((u_long)SCARG(uap, addr) & 1) != 0)
#else /* !m68k XXX */
((u_long)SCARG(uap, addr) & (sizeof(int) - 1)) != 0)
#endif /* !m68k XXX */
return (EINVAL);
/*
* Fill in eproc in user area, because user.h says that
* it's valid for ptrace(). Do it the same way as coredump().
*/
bcopy(t, &t->p_addr->u_kproc.kp_proc, sizeof(struct proc));
fill_eproc(t, &t->p_addr->u_kproc.kp_eproc);
/* Finally, pull the appropriate int out of the user area. */
*retval =
*(int *)((caddr_t)t->p_addr + (u_long)SCARG(uap, addr));
return (0);
case PT_WRITE_U:
/*
* Mostly the same as PT_READ_U, but write data instead of
* reading it. Don't bother filling in the eproc, because
* it won't be used for anything anyway.
*/
if ((u_long)SCARG(uap, addr) > USPACE - sizeof(int) ||
#ifdef m68k /* XXX */
((u_long)SCARG(uap, addr) & 1) != 0)
#else /* !m68k XXX */
((u_long)SCARG(uap, addr) & (sizeof(int) - 1)) != 0)
#endif /* !m68k XXX */
return (EINVAL);
/* And write the data. */
*(int *)((caddr_t)t->p_addr + (u_long)SCARG(uap, addr)) =
SCARG(uap, data);
return (0);
#ifdef PT_STEP
case PT_STEP:
/*

4
sys/sys/ptrace.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: ptrace.h,v 1.18 1994/08/15 16:37:51 cgd Exp $ */
/* $NetBSD: ptrace.h,v 1.19 1995/01/26 17:56:22 mycroft Exp $ */
/*-
* Copyright (c) 1984, 1993
@ -41,10 +41,8 @@
#define PT_TRACE_ME 0 /* child declares it's being traced */
#define PT_READ_I 1 /* read word in child's I space */
#define PT_READ_D 2 /* read word in child's D space */
#define PT_READ_U 3 /* read word in child's user structure */
#define PT_WRITE_I 4 /* write word in child's I space */
#define PT_WRITE_D 5 /* write word in child's D space */
#define PT_WRITE_U 6 /* write word in child's user structure */
#define PT_CONTINUE 7 /* continue the child */
#define PT_KILL 8 /* kill the child process */
#define PT_ATTACH 9 /* attach to running process */