glibc/misc/ptrace.c
Paul Eggert 581c785bf3 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.

I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah.  I don't
know why I run into these diagnostics whereas others evidently do not.

remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
2022-01-01 11:40:24 -08:00

109 lines
2.8 KiB
C

/* Copyright (C) 1991-2022 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
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <sys/ptrace.h>
#include <sys/types.h>
#include <stdarg.h>
/* Perform process tracing functions. REQUEST is one of the values
in <sys/ptrace.h>, and determines the action to be taken.
For all requests except PTRACE_TRACEME, PID specifies the process to be
traced.
PID and the other arguments described above for the various requests should
appear (those that are used for the particular request) as:
pid_t PID, void *ADDR, int DATA, void *ADDR2
after PID. */
int
ptrace (enum __ptrace_request request, ...)
{
pid_t pid;
void *addr;
void *addr2;
int data;
va_list ap;
switch (request)
{
case PTRACE_TRACEME:
case PTRACE_CONT:
case PTRACE_KILL:
case PTRACE_SINGLESTEP:
case PTRACE_ATTACH:
case PTRACE_DETACH:
break;
case PTRACE_PEEKTEXT:
case PTRACE_PEEKDATA:
case PTRACE_PEEKUSER:
case PTRACE_GETREGS:
case PTRACE_SETREGS:
#ifdef PTRACE_GETFPREGS
case PTRACE_GETFPGEGS:
#endif
case PTRACE_SETFPREGS:
case PTRACE_GETFPAREGS:
case PTRACE_SETFPAREGS:
va_start (ap, request);
pid = va_arg (ap, pid_t);
addr = va_arg (ap, void *);
va_end (ap);
ignore_value (pid);
ignore_value (addr);
break;
case PTRACE_POKETEXT:
case PTRACE_POKEDATA:
case PTRACE_POKEUSER:
va_start (ap, request);
pid = va_arg (ap, pid_t);
addr = va_arg (ap, void *);
data = va_arg (ap, int);
va_end (ap);
ignore_value (pid);
ignore_value (addr);
ignore_value (data);
break;
case PTRACE_READDATA:
case PTRACE_WRITEDATA:
case PTRACE_READTEXT:
case PTRACE_WRITETEXT:
va_start (ap, request);
pid = va_arg (ap, pid_t);
addr = va_arg (ap, void *);
data = va_arg (ap, int);
addr2 = va_arg (ap, void *);
va_end (ap);
ignore_value (pid);
ignore_value (addr);
ignore_value (data);
ignore_value (addr2);
break;
default:
__set_errno (EINVAL);
return -1;
}
__set_errno (ENOSYS);
return -1;
}
stub_warning (ptrace)