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LibCore: Add wrapper for fstatat()

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`Core::System::fstatat()` is similar to our standard `Core::System`
wrappers.

`Core::Directory::stat(relative_path, flags)` is a convenience method if
you already have a Directory, to stat a file relative to it.
This commit is contained in:
Sam Atkins 2023-03-17 15:23:24 +00:00 • committed by Andrew Kaster
parent c140b67be3
commit da8da79e62
Notes: sideshowbarker 2024-07-16 20:44:03 +09:00
4 changed files with 24 additions and 1 deletions
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18
Userland/Libraries/LibCore/System.cpp
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@ -1,7 +1,7 @@
/*
* Copyright (c) 2021-2022, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021-2022, Kenneth Myhra <kennethmyhra@serenityos.org>
* Copyright (c) 2021-2022, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2021-2023, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2022, Matthias Zimmerman <matthias291999@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
@ -380,6 +380,22 @@ ErrorOr<struct stat> fstat(int fd)
return st;
}
ErrorOr<struct stat> fstatat(int fd, StringView path, int flags)
{
if (!path.characters_without_null_termination())
return Error::from_syscall("fstatat"sv, -EFAULT);
struct stat st = {};
#ifdef AK_OS_SERENITY
Syscall::SC_stat_params params { { path.characters_without_null_termination(), path.length() }, &st, fd, !(flags & AT_SYMLINK_NOFOLLOW) };
int rc = syscall(SC_stat, &params);
#else
DeprecatedString path_string = path;
int rc = ::fstatat(fd, path_string.characters(), &st, flags);
#endif
HANDLE_SYSCALL_RETURN_VALUE("fstatat", rc, st);
}
ErrorOr<int> fcntl(int fd, int command, ...)
{
va_list ap;