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114 lines
3.0 KiB
C
114 lines
3.0 KiB
C
/* Copyright (C) 1995,1996,1997,1998,2000,2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/ptrace.h>
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#include <sys/user.h>
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#include <stdarg.h>
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#include <sysdep.h>
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#include <sys/syscall.h>
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#include <bp-checks.h>
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long int
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ptrace (enum __ptrace_request request, ...)
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{
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long int res, ret;
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va_list ap;
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pid_t pid;
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void *addr, *data;
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va_start (ap, request);
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pid = va_arg (ap, pid_t);
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addr = va_arg (ap, void *);
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data = va_arg (ap, void *);
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va_end (ap);
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if (request > 0 && request < 4)
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data = &ret;
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#if __BOUNDED_POINTERS__
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switch (request)
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{
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case PTRACE_PEEKTEXT:
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case PTRACE_PEEKDATA:
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case PTRACE_PEEKUSER:
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case PTRACE_POKETEXT:
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case PTRACE_POKEDATA:
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case PTRACE_POKEUSER:
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(void) CHECK_1 ((int *) addr);
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(void) CHECK_1 ((int *) data);
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break;
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case PTRACE_GETREGS:
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case PTRACE_SETREGS:
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#ifdef __i386__
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(void) CHECK_1 ((struct user_regs_struct *) data);
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#else
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/* We don't know the size of data, so the best we can do is ensure
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that `data' is valid for at least one word. */
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(void) CHECK_1 ((int *) data);
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#endif
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break;
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case PTRACE_GETFPREGS:
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case PTRACE_SETFPREGS:
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#ifdef __i386__
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(void) CHECK_1 ((struct user_fpregs_struct *) data);
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#else
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/* We don't know the size of data, so the best we can do is ensure
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that `data' is valid for at least one word. */
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(void) CHECK_1 ((int *) data);
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#endif
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break;
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case PTRACE_GETFPXREGS:
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case PTRACE_SETFPXREGS:
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#ifdef __i386__
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(void) CHECK_1 ((struct user_fpxregs_struct *) data);
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#else
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/* We don't know the size of data, so the best we can do is ensure
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that `data' is valid for at least one word. */
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(void) CHECK_1 ((int *) data);
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#endif
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break;
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case PTRACE_TRACEME:
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case PTRACE_CONT:
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case PTRACE_KILL:
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case PTRACE_SINGLESTEP:
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case PTRACE_ATTACH:
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case PTRACE_DETACH:
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case PTRACE_SYSCALL:
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/* Neither `data' nor `addr' needs any checks. */
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break;
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};
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#endif
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res = INLINE_SYSCALL (ptrace, 4, request, pid,
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__ptrvalue (addr), __ptrvalue (data));
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if (res >= 0 && request > 0 && request < 4)
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{
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__set_errno (0);
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return ret;
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}
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return res;
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}
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