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LibC: Move mman.h to sys/mman.h

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POSIX mandates that it is placed there.
This commit is contained in:
Jean-Baptiste Boric 2021-05-14 17:38:33 +02:00 • committed by Andreas Kling
parent e16894af5a
commit eecf7a2097
10 changed files with 45 additions and 54 deletions
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85
Userland/Libraries/LibC/sys/mman.cpp Normal file
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@ -0,0 +1,85 @@
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <sys/mman.h>
#include <syscall.h>
extern "C" {
void* serenity_mmap(void* addr, size_t size, int prot, int flags, int fd, off_t offset, size_t alignment, const char* name)
{
Syscall::SC_mmap_params params { (uintptr_t)addr, size, alignment, prot, flags, fd, offset, { name, name ? strlen(name) : 0 } };
ptrdiff_t rc = syscall(SC_mmap, &params);
if (rc < 0 && -rc < EMAXERRNO) {
errno = -rc;
return MAP_FAILED;
}
return (void*)rc;
}
void* mmap(void* addr, size_t size, int prot, int flags, int fd, off_t offset)
{
return serenity_mmap(addr, size, prot, flags, fd, offset, PAGE_SIZE, nullptr);
}
void* mmap_with_name(void* addr, size_t size, int prot, int flags, int fd, off_t offset, const char* name)
{
return serenity_mmap(addr, size, prot, flags, fd, offset, PAGE_SIZE, name);
}
void* mremap(void* old_address, size_t old_size, size_t new_size, int flags)
{
Syscall::SC_mremap_params params { (uintptr_t)old_address, old_size, new_size, flags };
ptrdiff_t rc = syscall(SC_mremap, &params);
if (rc < 0 && -rc < EMAXERRNO) {
errno = -rc;
return MAP_FAILED;
}
return (void*)rc;
}
int munmap(void* addr, size_t size)
{
int rc = syscall(SC_munmap, addr, size);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
int mprotect(void* addr, size_t size, int prot)
{
int rc = syscall(SC_mprotect, addr, size, prot);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
int set_mmap_name(void* addr, size_t size, const char* name)
{
if (!name) {
errno = EFAULT;
return -1;
}
Syscall::SC_set_mmap_name_params params { addr, size, { name, strlen(name) } };
int rc = syscall(SC_set_mmap_name, &params);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
int madvise(void* address, size_t size, int advice)
{
int rc = syscall(SC_madvise, address, size, advice);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
void* allocate_tls(const char* initial_data, size_t size)
{
ptrdiff_t rc = syscall(SC_allocate_tls, initial_data, size);
if (rc < 0 && -rc < EMAXERRNO) {
errno = -rc;
return MAP_FAILED;
}
return (void*)rc;
}
}

38
Userland/Libraries/LibC/sys/mman.h
View file

@ -6,4 +6,40 @@
#pragma once
#include <mman.h>
#include <sys/cdefs.h>
#include <sys/types.h>
#define MAP_FILE 0x00
#define MAP_SHARED 0x01
#define MAP_PRIVATE 0x02
#define MAP_FIXED 0x10
#define MAP_ANONYMOUS 0x20
#define MAP_ANON MAP_ANONYMOUS
#define MAP_STACK 0x40
#define MAP_NORESERVE 0x80
#define MAP_RANDOMIZED 0x100
#define PROT_READ 0x1
#define PROT_WRITE 0x2
#define PROT_EXEC 0x4
#define PROT_NONE 0x0
#define MAP_FAILED ((void*)-1)
#define MADV_SET_VOLATILE 0x100
#define MADV_SET_NONVOLATILE 0x200
#define MADV_GET_VOLATILE 0x400
__BEGIN_DECLS
void* mmap(void* addr, size_t, int prot, int flags, int fd, off_t);
void* mmap_with_name(void* addr, size_t, int prot, int flags, int fd, off_t, const char* name);
void* serenity_mmap(void* addr, size_t, int prot, int flags, int fd, off_t, size_t alignment, const char* name);
void* mremap(void* old_address, size_t old_size, size_t new_size, int flags);
int munmap(void*, size_t);
int mprotect(void*, size_t, int prot);
int set_mmap_name(void*, size_t, const char*);
int madvise(void*, size_t, int advice);
void* allocate_tls(const char* initial_data, size_t);
__END_DECLS