3party/crashpad
0
0
Fork 0
mirror of https://github.com/chromium/crashpad.git synced 2025-03-09 14:06:33 +00:00
Code Issues Packages Projects Releases Wiki Activity

linux, compat: add a memfd_create wrapper

Browse Source 
Change-Id: Iecbf85d0e963779b4c16083b481f4ab50f509115
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/1774899
Commit-Queue: Joshua Peraza <jperaza@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
This commit is contained in:
Joshua Peraza 2019-08-30 11:45:54 -07:00 committed by Commit Bot
parent 23a1be41ce
commit 80473094a4
3 changed files with 77 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
compat/BUILD.gn
View File

@ -79,6 +79,8 @@ compat_target("compat") {
if (crashpad_is_linux || crashpad_is_android) {
sources += [
"linux/signal.h",
"linux/sys/mman.cc",
"linux/sys/mman.h",
"linux/sys/ptrace.h",
"linux/sys/user.h",
]

35
compat/linux/sys/mman.cc Normal file
View File

@ -0,0 +1,35 @@
// Copyright 2019 The Crashpad Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <sys/mman.h>
#include <dlfcn.h>
#include <sys/syscall.h>
#include <unistd.h>
#if defined(__GLIBC__)
extern "C" {
int memfd_create(const char* name, unsigned int flags) {
using MemfdCreateType = int (*)(const char*, int);
static const MemfdCreateType next_memfd_create =
reinterpret_cast<MemfdCreateType>(dlsym(RTLD_NEXT, "memfd_create"));
return next_memfd_create ? next_memfd_create(name, flags)
: syscall(SYS_memfd_create, name, flags);
}
} // extern "C"
#endif // __GLIBC__

40
compat/linux/sys/mman.h Normal file
View File

@ -0,0 +1,40 @@
// Copyright 2019 The Crashpad Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef CRASHPAD_COMPAT_LINUX_SYS_MMAN_H_
#define CRASHPAD_COMPAT_LINUX_SYS_MMAN_H_
#include_next <sys/mman.h>
#include <features.h>
// There's no memfd_create() wrapper before glibc 2.27.
// This can't select for glibc < 2.27 because linux-chromeos-rel bots build this
// code using a sysroot which has glibc 2.27, but then run it on Ubuntu 16.04,
// which doesn't.
#if defined(__GLIBC__)
#ifdef __cplusplus
extern "C" {
#endif
int memfd_create(const char* name, unsigned int flags);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // __GLIBC__
#endif // CRASHPAD_COMPAT_LINUX_SYS_MMAN_H_