diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/ptrace.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/ptrace.c | 58 |
1 files changed, 55 insertions, 3 deletions
diff --git a/sysdeps/unix/sysv/linux/ptrace.c b/sysdeps/unix/sysv/linux/ptrace.c index 109191ea47..3ed1af6c11 100644 --- a/sysdeps/unix/sysv/linux/ptrace.c +++ b/sysdeps/unix/sysv/linux/ptrace.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc. +/* Copyright (C) 1995, 1996, 1997, 1998, 2000 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -19,12 +19,15 @@ #include <errno.h> #include <sys/types.h> #include <sys/ptrace.h> +#include <sys/user.h> #include <stdarg.h> #include <sysdep.h> #include <sys/syscall.h> +#include <bp-checks.h> -extern long int __syscall_ptrace (int, pid_t, void *, void *); +extern long int __syscall_ptrace (int, pid_t, void *__unbounded, + void *__unbounded); long int ptrace (enum __ptrace_request request, ...) @@ -43,7 +46,56 @@ ptrace (enum __ptrace_request request, ...) if (request > 0 && request < 4) data = &ret; - res = INLINE_SYSCALL (ptrace, 4, request, pid, addr, data); +#if __BOUNDED_POINTERS__ + switch (request) + { + case PTRACE_PEEKTEXT: + case PTRACE_PEEKDATA: + case PTRACE_PEEKUSER: + case PTRACE_POKETEXT: + case PTRACE_POKEDATA: + case PTRACE_POKEUSER: + CHECK_1 ((int *) addr); + CHECK_1 ((int *) data); + break; + + case PTRACE_GETREGS: + case PTRACE_SETREGS: +#ifdef __i386__ + CHECK_1 ((struct user_regs_struct *) data); +#else + /* We don't know the size of data, so the best we can do is ensure + that `data' is valid for at least one word. */ + CHECK_1 ((int *) data); +#endif + break; + + case PTRACE_GETFPREGS: + case PTRACE_SETFPREGS: +#ifdef __i386__ + CHECK_1 ((struct user_fpregs_struct *) data); +#else + /* We don't know the size of data, so the best we can do is ensure + that `data' is valid for at least one word. */ + CHECK_1 ((int *) data); +#endif + break; + + case PTRACE_GETFPXREGS: + case PTRACE_SETFPXREGS: +#ifdef __i386__ + CHECK_1 ((struct user_fpxregs_struct *) data); +#else + /* We don't know the size of data, so the best we can do is ensure + that `data' is valid for at least one word. */ + CHECK_1 ((int *) data); +#endif + break; + }; +#endif + + res = INLINE_SYSCALL (ptrace, 4, request, pid, + __ptrvalue (addr), __ptrvalue (data)); if (res >= 0 && request > 0 && request < 4) { __set_errno (0); |