mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 17:42:43 +00:00
09a43969ba
Replacement made by `find Kernel Userland -name '*.h' -o -name '*.cpp' | sed -i -Ee 's/dbgln\b<(\w+)>\(/dbgln_if(\1, /g'`
110 lines
3.6 KiB
C++
110 lines
3.6 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <Kernel/Debug.h>
|
|
#include <Kernel/FileSystem/Custody.h>
|
|
#include <Kernel/FileSystem/FileDescription.h>
|
|
#include <Kernel/FileSystem/VirtualFileSystem.h>
|
|
#include <Kernel/Process.h>
|
|
|
|
namespace Kernel {
|
|
|
|
int Process::sys$open(Userspace<const Syscall::SC_open_params*> user_params)
|
|
{
|
|
Syscall::SC_open_params params;
|
|
if (!copy_from_user(¶ms, user_params))
|
|
return -EFAULT;
|
|
|
|
int dirfd = params.dirfd;
|
|
int options = params.options;
|
|
u16 mode = params.mode;
|
|
|
|
if (options & O_NOFOLLOW_NOERROR)
|
|
return -EINVAL;
|
|
|
|
if (options & O_UNLINK_INTERNAL)
|
|
return -EINVAL;
|
|
|
|
if (options & O_WRONLY)
|
|
REQUIRE_PROMISE(wpath);
|
|
else if (options & O_RDONLY)
|
|
REQUIRE_PROMISE(rpath);
|
|
|
|
if (options & O_CREAT)
|
|
REQUIRE_PROMISE(cpath);
|
|
|
|
// Ignore everything except permission bits.
|
|
mode &= 0777;
|
|
|
|
auto path = get_syscall_path_argument(params.path);
|
|
if (path.is_error())
|
|
return path.error();
|
|
|
|
dbgln_if(IO_DEBUG, "sys$open(dirfd={}, path='{}', options={}, mode={})", dirfd, path.value(), options, mode);
|
|
int fd = alloc_fd();
|
|
if (fd < 0)
|
|
return fd;
|
|
|
|
RefPtr<Custody> base;
|
|
if (dirfd == AT_FDCWD) {
|
|
base = current_directory();
|
|
} else {
|
|
auto base_description = file_description(dirfd);
|
|
if (!base_description)
|
|
return -EBADF;
|
|
if (!base_description->is_directory())
|
|
return -ENOTDIR;
|
|
if (!base_description->custody())
|
|
return -EINVAL;
|
|
base = base_description->custody();
|
|
}
|
|
|
|
auto result = VFS::the().open(path.value(), options, mode & ~umask(), *base);
|
|
if (result.is_error())
|
|
return result.error();
|
|
auto description = result.value();
|
|
|
|
if (description->inode() && description->inode()->socket())
|
|
return -ENXIO;
|
|
|
|
u32 fd_flags = (options & O_CLOEXEC) ? FD_CLOEXEC : 0;
|
|
m_fds[fd].set(move(description), fd_flags);
|
|
return fd;
|
|
}
|
|
|
|
int Process::sys$close(int fd)
|
|
{
|
|
REQUIRE_PROMISE(stdio);
|
|
auto description = file_description(fd);
|
|
dbgln_if(IO_DEBUG, "sys$close({}) {}", fd, description.ptr());
|
|
if (!description)
|
|
return -EBADF;
|
|
int rc = description->close();
|
|
m_fds[fd] = {};
|
|
return rc;
|
|
}
|
|
|
|
}
|