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#include <sys/syscall.h>
#include <sys/uio.h> /* iovec, pwritev, preadv */
#include <errno.h> /* errno */
#include <unistd.h> /* syscall */
ssize_t pwritev64v2(int fd, const struct iovec *iov, int count, off_t ofs, int flags)
{
if (flags != 0) {
errno = ENOTSUP;
return -1;
}
if (ofs == -1) {
return writev(fd, iov, count);
}
return syscall(__NR_pwritev2, fd, iov, count, ofs);
}
ssize_t preadv64v2(int fd, const struct iovec *iov, int count, off_t ofs, int flags)
{
if (flags != 0) {
errno = ENOTSUP;
return -1;
}
if (ofs == -1) {
return readv(fd, iov, count);
}
return syscall(__NR_preadv2, fd, iov, count, ofs);
}
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