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Kernel+LibC+Tests: Implement pwritev(2)

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While this isn't really POSIX, it's needed by the Zig port and was
simple enough to implement.
This commit is contained in:
sin-ack 2022-10-01 13:21:20 +00:00 • committed by Andrew Kaster
parent 70337f3a4b
commit 9b425b860c
6 changed files with 28 additions and 12 deletions
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4
Kernel/Process.h
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@ -317,7 +317,7 @@ public:
ErrorOr<FlatPtr> sys$pread(int fd, Userspace<u8*>, size_t, Userspace<off_t const*>);
ErrorOr<FlatPtr> sys$readv(int fd, Userspace<const struct iovec*> iov, int iov_count);
ErrorOr<FlatPtr> sys$write(int fd, Userspace<u8 const*>, size_t);
ErrorOr<FlatPtr> sys$writev(int fd, Userspace<const struct iovec*> iov, int iov_count);
ErrorOr<FlatPtr> sys$pwritev(int fd, Userspace<const struct iovec*> iov, int iov_count, Userspace<off_t const*>);
ErrorOr<FlatPtr> sys$fstat(int fd, Userspace<stat*>);
ErrorOr<FlatPtr> sys$stat(Userspace<Syscall::SC_stat_params const*>);
ErrorOr<FlatPtr> sys$lseek(int fd, Userspace<off_t*>, int whence);
@ -602,7 +602,7 @@ private:
void delete_perf_events_buffer();
ErrorOr<void> do_exec(NonnullLockRefPtr<OpenFileDescription> main_program_description, NonnullOwnPtrVector<KString> arguments, NonnullOwnPtrVector<KString> environment, LockRefPtr<OpenFileDescription> interpreter_description, Thread*& new_main_thread, u32& prev_flags, const ElfW(Ehdr) & main_program_header);
ErrorOr<FlatPtr> do_write(OpenFileDescription&, UserOrKernelBuffer const&, size_t);
ErrorOr<FlatPtr> do_write(OpenFileDescription&, UserOrKernelBuffer const&, size_t, Optional<off_t> = {});
ErrorOr<FlatPtr> do_statvfs(FileSystem const& path, Custody const*, statvfs* buf);