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tools/nolibc: add ptrace support

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Add ptrace support, as it will be useful in UML.

Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
[Thomas: drop va_args usage and linux/uio.h inclusion]
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
This commit is contained in:
Benjamin Berg
2025-09-24 16:20:58 +02:00
committed by Thomas Weißschuh
parent 8f0b4cce44
commit ec4bb8e8df
4 changed files with 37 additions and 0 deletions
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1
tools/include/nolibc/Makefile
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@@ -54,6 +54,7 @@ all_files := \
sys/mman.h \
sys/mount.h \
sys/prctl.h \
sys/ptrace.h \
sys/random.h \
sys/reboot.h \
sys/resource.h \

1
tools/include/nolibc/nolibc.h
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@@ -101,6 +101,7 @@
#include "sys/mman.h"
#include "sys/mount.h"
#include "sys/prctl.h"
#include "sys/ptrace.h"
#include "sys/random.h"
#include "sys/reboot.h"
#include "sys/resource.h"

33
tools/include/nolibc/sys/ptrace.h Normal file
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@@ -0,0 +1,33 @@
/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
/*
* ptrace for NOLIBC
* Copyright (C) 2017-2021 Willy Tarreau <w@1wt.eu>
* Copyright (C) 2025 Intel Corporation
*/
/* make sure to include all global symbols */
#include "../nolibc.h"
#ifndef _NOLIBC_SYS_PTRACE_H
#define _NOLIBC_SYS_PTRACE_H
#include "../sys.h"
#include <linux/ptrace.h>
/*
* long ptrace(int op, pid_t pid, void *addr, void *data);
*/
static __attribute__((unused))
long sys_ptrace(int op, pid_t pid, void *addr, void *data)
{
return my_syscall4(__NR_ptrace, op, pid, addr, data);
}
static __attribute__((unused))
ssize_t ptrace(int op, pid_t pid, void *addr, void *data)
{
return __sysret(sys_ptrace(op, pid, addr, data));
}
#endif /* _NOLIBC_SYS_PTRACE_H */