/* vi: set sw=4 ts=4: */ /* * readv() for uClibc * * Copyright (C) 2006 by Steven J. Hill <sjhill@realitydiluted.com> * Copyright (C) 2000-2004 by Erik Andersen <andersen@codepoet.org> * * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. */ #include <sys/syscall.h> #include <sys/uio.h> #ifdef __UCLIBC_HAS_THREADS_NATIVE__ #include <sysdep-cancel.h> /* We should deal with kernel which have a smaller UIO_FASTIOV as well as a very big count. */ static ssize_t __readv (int fd, const struct iovec *vector, int count) { ssize_t bytes_read; bytes_read = INLINE_SYSCALL (readv, 3, fd, vector, count); if (bytes_read >= 0 || errno != EINVAL || count <= UIO_FASTIOV) return bytes_read; /* glibc tries again, but we do not. */ //return __atomic_readv_replacement (fd, vector, count); return -1; } ssize_t readv (int fd, const struct iovec *vector, int count) { if (SINGLE_THREAD_P) return __readv (fd, vector, count); int oldtype = LIBC_CANCEL_ASYNC (); int result = __readv (fd, vector, count); LIBC_CANCEL_RESET (oldtype); return result; } #else _syscall3(ssize_t, readv, int, filedes, const struct iovec *, vector, int, count) #endif