Contributors: 5
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Bodo Stroesser |
96 |
67.61% |
1 |
11.11% |
| Jeff Dike |
34 |
23.94% |
5 |
55.56% |
| Linus Torvalds |
6 |
4.23% |
1 |
11.11% |
| Al Viro |
4 |
2.82% |
1 |
11.11% |
| Alex Dewar |
2 |
1.41% |
1 |
11.11% |
| Total |
142 |
|
9 |
|
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2015 Thomas Meyer (thomas@m3y3r.de)
* Copyright (C) 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
*/
#include <signal.h>
#include <sched.h>
#include <asm/unistd.h>
#include <sys/time.h>
#include <as-layout.h>
#include <ptrace_user.h>
#include <stub-data.h>
#include <sysdep/stub.h>
/*
* This is in a separate file because it needs to be compiled with any
* extraneous gcc flags (-pg, -fprofile-arcs, -ftest-coverage) disabled
*
* Use UM_KERN_PAGE_SIZE instead of PAGE_SIZE because that calls getpagesize
* on some systems.
*/
void __attribute__ ((__section__ (".__syscall_stub")))
stub_clone_handler(void)
{
struct stub_data *data = (struct stub_data *) STUB_DATA;
long err;
err = stub_syscall2(__NR_clone, CLONE_PARENT | CLONE_FILES | SIGCHLD,
STUB_DATA + UM_KERN_PAGE_SIZE / 2 - sizeof(void *));
if (err != 0)
goto out;
err = stub_syscall4(__NR_ptrace, PTRACE_TRACEME, 0, 0, 0);
if (err)
goto out;
remap_stack(data->fd, data->offset);
goto done;
out:
/*
* save current result.
* Parent: pid;
* child: retcode of mmap already saved and it jumps around this
* assignment
*/
data->err = err;
done:
trap_myself();
}