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LibCore: Add lstat() syscall wrapper

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This commit is contained in:
Andreas Kling 2021-12-02 22:41:40 +01:00
parent 21acebd372
commit 1640445cb2
Notes: sideshowbarker 2024-07-17 23:12:10 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/1640445cb2f
2 changed files with 19 additions and 0 deletions
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18
Userland/Libraries/LibCore/System.cpp
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@ -175,6 +175,24 @@ ErrorOr<struct stat> stat(StringView path)
#endif
}
ErrorOr<struct stat> lstat(StringView path)
{
if (!path.characters_without_null_termination())
return Error::from_syscall("lstat"sv, -EFAULT);
struct stat st = {};
#ifdef __serenity__
Syscall::SC_stat_params params { { path.characters_without_null_termination(), path.length() }, &st, AT_FDCWD, false };
int rc = syscall(SC_stat, &params);
HANDLE_SYSCALL_RETURN_VALUE("lstat"sv, rc, st);
#else
String path_string = path;
if (::stat(path_string.characters(), &st) < 0)
return Error::from_syscall("lstat"sv, -errno);
return st;
#endif
}
ErrorOr<ssize_t> read(int fd, Bytes buffer)
{
ssize_t rc = ::read(fd, buffer.data(), buffer.size());

1
Userland/Libraries/LibCore/System.h
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@ -30,6 +30,7 @@ ErrorOr<int> open(StringView path, int options, ...);
ErrorOr<void> close(int fd);
ErrorOr<void> ftruncate(int fd, off_t length);
ErrorOr<struct stat> stat(StringView path);
ErrorOr<struct stat> lstat(StringView path);
ErrorOr<ssize_t> read(int fd, Bytes buffer);
ErrorOr<ssize_t> write(int fd, ReadonlyBytes buffer);
ErrorOr<void> kill(pid_t, int signal);