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LibCore: Add Core::System wrappers for fstat() and fcntl()

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This commit is contained in:
Andreas Kling 2021-11-23 11:10:19 +01:00
parent 21a5fb0fa2
commit c37a02341b
Notes: sideshowbarker 2024-07-18 00:49:21 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/c37a02341b6
2 changed files with 25 additions and 0 deletions
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22
Userland/Libraries/LibCore/System.cpp
View file

@ -6,6 +6,8 @@
#include <LibCore/System.h>
#include <LibSystem/syscall.h>
#include <fcntl.h>
#include <stdarg.h>
#define HANDLE_SYSCALL_RETURN_VALUE(syscall_name, rc, success_value) \
if ((rc) < 0) { \
@ -44,4 +46,24 @@ ErrorOr<void> sigaction(int signal, struct sigaction const* action, struct sigac
return {};
}
ErrorOr<struct stat> fstat(int fd)
{
struct stat st = {};
if (::fstat(fd, &st) < 0)
return Error::from_syscall("fstat"sv, -errno);
return st;
}
ErrorOr<int> fcntl(int fd, int command, ...)
{
va_list ap;
va_start(ap, command);
u32 extra_arg = va_arg(ap, u32);
int rc = ::fcntl(fd, command, extra_arg);
va_end(ap);
if (rc < 0)
return Error::from_syscall("fcntl"sv, -errno);
return rc;
}
}

3
Userland/Libraries/LibCore/System.h
View file

@ -8,6 +8,7 @@
#include <AK/Error.h>
#include <signal.h>
#include <sys/stat.h>
namespace Core::System {
@ -17,5 +18,7 @@ ErrorOr<void> unveil(StringView path, StringView permissions);
#endif
ErrorOr<void> sigaction(int signal, struct sigaction const* action, struct sigaction* old_action);
ErrorOr<struct stat> fstat(int fd);
ErrorOr<int> fcntl(int fd, int command, ...);
}