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9c316a45 | 1 | /* Copyright (C) 1995-1998,2000,2003,2006 Free Software Foundation, Inc. |
478b92f0 UD |
2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
478b92f0 UD |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
478b92f0 | 13 | |
41bdb6e2 AJ |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, write to the Free | |
16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
17 | 02111-1307 USA. */ | |
93995795 RM |
18 | |
19 | #include <errno.h> | |
97aa195c | 20 | #include <sys/types.h> |
93995795 | 21 | #include <sys/ptrace.h> |
4bbb61e4 | 22 | #include <sys/user.h> |
97aa195c | 23 | #include <stdarg.h> |
9c316a45 | 24 | #include <signal.h> |
97aa195c | 25 | |
0dee6738 UD |
26 | #include <sysdep.h> |
27 | #include <sys/syscall.h> | |
4bbb61e4 | 28 | #include <bp-checks.h> |
0dee6738 | 29 | |
4547c1a4 | 30 | long int |
97aa195c | 31 | ptrace (enum __ptrace_request request, ...) |
93995795 | 32 | { |
4547c1a4 | 33 | long int res, ret; |
97aa195c RM |
34 | va_list ap; |
35 | pid_t pid; | |
36 | void *addr, *data; | |
37 | ||
38 | va_start (ap, request); | |
39 | pid = va_arg (ap, pid_t); | |
40 | addr = va_arg (ap, void *); | |
41 | data = va_arg (ap, void *); | |
42 | va_end (ap); | |
43 | ||
93995795 | 44 | if (request > 0 && request < 4) |
97aa195c | 45 | data = &ret; |
93995795 | 46 | |
4bbb61e4 GM |
47 | #if __BOUNDED_POINTERS__ |
48 | switch (request) | |
49 | { | |
50 | case PTRACE_PEEKTEXT: | |
51 | case PTRACE_PEEKDATA: | |
52 | case PTRACE_PEEKUSER: | |
53 | case PTRACE_POKETEXT: | |
54 | case PTRACE_POKEDATA: | |
55 | case PTRACE_POKEUSER: | |
c62f5cab GM |
56 | (void) CHECK_1 ((int *) addr); |
57 | (void) CHECK_1 ((int *) data); | |
4bbb61e4 GM |
58 | break; |
59 | ||
60 | case PTRACE_GETREGS: | |
61 | case PTRACE_SETREGS: | |
62 | #ifdef __i386__ | |
c62f5cab | 63 | (void) CHECK_1 ((struct user_regs_struct *) data); |
4bbb61e4 GM |
64 | #else |
65 | /* We don't know the size of data, so the best we can do is ensure | |
66 | that `data' is valid for at least one word. */ | |
c62f5cab | 67 | (void) CHECK_1 ((int *) data); |
4bbb61e4 GM |
68 | #endif |
69 | break; | |
70 | ||
71 | case PTRACE_GETFPREGS: | |
72 | case PTRACE_SETFPREGS: | |
73 | #ifdef __i386__ | |
c62f5cab | 74 | (void) CHECK_1 ((struct user_fpregs_struct *) data); |
4bbb61e4 GM |
75 | #else |
76 | /* We don't know the size of data, so the best we can do is ensure | |
77 | that `data' is valid for at least one word. */ | |
c62f5cab | 78 | (void) CHECK_1 ((int *) data); |
4bbb61e4 GM |
79 | #endif |
80 | break; | |
81 | ||
82 | case PTRACE_GETFPXREGS: | |
83 | case PTRACE_SETFPXREGS: | |
84 | #ifdef __i386__ | |
c62f5cab | 85 | (void) CHECK_1 ((struct user_fpxregs_struct *) data); |
4bbb61e4 GM |
86 | #else |
87 | /* We don't know the size of data, so the best we can do is ensure | |
88 | that `data' is valid for at least one word. */ | |
c62f5cab | 89 | (void) CHECK_1 ((int *) data); |
4bbb61e4 GM |
90 | #endif |
91 | break; | |
14fa17cc | 92 | |
9c316a45 UD |
93 | case PTRACE_GETSIGINFO: |
94 | case PTRACE_SETSIGINFO: | |
95 | (void) CHECK_1 ((siginfo_t *) data); | |
96 | break; | |
97 | ||
98 | case PTRACE_GETEVENTMSG: | |
99 | (void) CHECK_1 ((unsigned long *) data); | |
100 | break; | |
101 | ||
102 | case PTRACE_SETOPTIONS: | |
103 | (void) CHECK_1 ((long *) data); | |
104 | break; | |
105 | ||
14fa17cc GM |
106 | case PTRACE_TRACEME: |
107 | case PTRACE_CONT: | |
108 | case PTRACE_KILL: | |
109 | case PTRACE_SINGLESTEP: | |
110 | case PTRACE_ATTACH: | |
111 | case PTRACE_DETACH: | |
112 | case PTRACE_SYSCALL: | |
113 | /* Neither `data' nor `addr' needs any checks. */ | |
114 | break; | |
4bbb61e4 GM |
115 | }; |
116 | #endif | |
117 | ||
118 | res = INLINE_SYSCALL (ptrace, 4, request, pid, | |
119 | __ptrvalue (addr), __ptrvalue (data)); | |
0dee6738 | 120 | if (res >= 0 && request > 0 && request < 4) |
93995795 | 121 | { |
0dee6738 UD |
122 | __set_errno (0); |
123 | return ret; | |
93995795 RM |
124 | } |
125 | ||
0dee6738 | 126 | return res; |
93995795 | 127 | } |