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Kernel+LibC: Unify sys$open() and sys$openat()

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The syscall is now called sys$open(), but it behaves like the old sys$openat().
In userspace, open_with_path_length() is made a wrapper over openat_with_path_length().
This commit is contained in:
Sergey Bugaev 2020-01-17 21:48:44 +03:00 • committed by Andreas Kling
parent d6184afcae
commit e0013a6b4c
4 changed files with 4 additions and 66 deletions
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46
Kernel/Process.cpp
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@ -1862,50 +1862,6 @@ int Process::sys$open(const Syscall::SC_open_params* user_params)
if (!validate_read_and_copy_typed(&params, user_params))
return -EFAULT;
auto options = params.options;
auto mode = params.mode;
if (options & O_NOFOLLOW_NOERROR)
return -EINVAL;
if ((options & O_RDWR) || (options & O_WRONLY))
REQUIRE_PROMISE(wpath);
else
REQUIRE_PROMISE(rpath);
if (options & O_CREAT)
REQUIRE_PROMISE(cpath);
auto path = get_syscall_path_argument(params.path);
if (path.is_error())
return path.error();
// Ignore everything except permission bits.
mode &= 04777;
int fd = alloc_fd();
#ifdef DEBUG_IO
dbgprintf("%s(%u) sys$open(\"%s\") -> %d\n", name().characters(), pid(), path.value().characters(), fd);
#endif
if (fd < 0)
return fd;
auto result = VFS::the().open(path.value(), options, mode & ~umask(), current_directory());
if (result.is_error())
return result.error();
auto description = result.value();
description->set_rw_mode(options);
description->set_file_flags(options);
u32 fd_flags = (options & O_CLOEXEC) ? FD_CLOEXEC : 0;
m_fds[fd].set(move(description), fd_flags);
return fd;
}
int Process::sys$openat(const Syscall::SC_openat_params* user_params)
{
Syscall::SC_openat_params params;
if (!validate_read_and_copy_typed(&params, user_params))
return -EFAULT;
int dirfd = params.dirfd;
int options = params.options;
u16 mode = params.mode;
@ -1928,7 +1884,7 @@ int Process::sys$openat(const Syscall::SC_openat_params* user_params)
if (path.is_error())
return path.error();
#ifdef DEBUG_IO
dbgprintf("%s(%u) sys$openat(%d, \"%s\")\n", dirfd, name().characters(), pid(), path.value().characters());
dbgprintf("%s(%u) sys$open(%d, \"%s\")\n", dirfd, name().characters(), pid(), path.value().characters());
#endif
int fd = alloc_fd();
if (fd < 0)