mirror of
https://github.com/RGBCube/serenity
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286984750e
Now that support for 32-bit x86 has been removed, we don't have to worry about the top half of `off_t`/`u64` values being chopped off when we try to pass them in registers. Therefore, we no longer need the workaround of pointers to stack-allocated values to syscalls. Note that this changes the system call ABI, so statically linked programs will have to be re-linked.
34 lines
739 B
C++
34 lines
739 B
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <bits/pthread_cancel.h>
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#include <errno.h>
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#include <sys/uio.h>
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#include <syscall.h>
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extern "C" {
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ssize_t writev(int fd, const struct iovec* iov, int iov_count)
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{
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return pwritev(fd, iov, iov_count, -1);
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}
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ssize_t readv(int fd, const struct iovec* iov, int iov_count)
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{
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__pthread_maybe_cancel();
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int rc = syscall(SC_readv, fd, iov, iov_count);
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__RETURN_WITH_ERRNO(rc, rc, -1);
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}
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ssize_t pwritev(int fd, struct iovec const* iov, int iov_count, off_t offset)
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{
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__pthread_maybe_cancel();
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int rc = syscall(SC_pwritev, fd, iov, iov_count, offset);
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__RETURN_WITH_ERRNO(rc, rc, -1);
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}
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}
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