1 | /* Copyright (C) 1991-2022 Free Software Foundation, Inc. |
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 |
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. |
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 |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <errno.h> |
19 | #include <sys/ptrace.h> |
20 | #include <sys/types.h> |
21 | #include <stdarg.h> |
22 | |
23 | /* Perform process tracing functions. REQUEST is one of the values |
24 | in <sys/ptrace.h>, and determines the action to be taken. |
25 | For all requests except PTRACE_TRACEME, PID specifies the process to be |
26 | traced. |
27 | |
28 | PID and the other arguments described above for the various requests should |
29 | appear (those that are used for the particular request) as: |
30 | pid_t PID, void *ADDR, int DATA, void *ADDR2 |
31 | after PID. */ |
32 | int |
33 | ptrace (enum __ptrace_request request, ...) |
34 | { |
35 | pid_t pid; |
36 | void *addr; |
37 | void *addr2; |
38 | int data; |
39 | va_list ap; |
40 | |
41 | switch (request) |
42 | { |
43 | case PTRACE_TRACEME: |
44 | case PTRACE_CONT: |
45 | case PTRACE_KILL: |
46 | case PTRACE_SINGLESTEP: |
47 | case PTRACE_ATTACH: |
48 | case PTRACE_DETACH: |
49 | break; |
50 | |
51 | case PTRACE_PEEKTEXT: |
52 | case PTRACE_PEEKDATA: |
53 | case PTRACE_PEEKUSER: |
54 | case PTRACE_GETREGS: |
55 | case PTRACE_SETREGS: |
56 | #ifdef PTRACE_GETFPREGS |
57 | case PTRACE_GETFPGEGS: |
58 | #endif |
59 | case PTRACE_SETFPREGS: |
60 | case PTRACE_GETFPAREGS: |
61 | case PTRACE_SETFPAREGS: |
62 | va_start (ap, request); |
63 | pid = va_arg (ap, pid_t); |
64 | addr = va_arg (ap, void *); |
65 | va_end (ap); |
66 | ignore_value (pid); |
67 | ignore_value (addr); |
68 | break; |
69 | |
70 | case PTRACE_POKETEXT: |
71 | case PTRACE_POKEDATA: |
72 | case PTRACE_POKEUSER: |
73 | va_start (ap, request); |
74 | pid = va_arg (ap, pid_t); |
75 | addr = va_arg (ap, void *); |
76 | data = va_arg (ap, int); |
77 | va_end (ap); |
78 | ignore_value (pid); |
79 | ignore_value (addr); |
80 | ignore_value (data); |
81 | break; |
82 | |
83 | case PTRACE_READDATA: |
84 | case PTRACE_WRITEDATA: |
85 | case PTRACE_READTEXT: |
86 | case PTRACE_WRITETEXT: |
87 | va_start (ap, request); |
88 | pid = va_arg (ap, pid_t); |
89 | addr = va_arg (ap, void *); |
90 | data = va_arg (ap, int); |
91 | addr2 = va_arg (ap, void *); |
92 | va_end (ap); |
93 | ignore_value (pid); |
94 | ignore_value (addr); |
95 | ignore_value (data); |
96 | ignore_value (addr2); |
97 | break; |
98 | |
99 | default: |
100 | __set_errno (EINVAL); |
101 | return -1; |
102 | } |
103 | |
104 | __set_errno (ENOSYS); |
105 | return -1; |
106 | } |
107 | |
108 | stub_warning (ptrace) |
109 | |