p{read,write}{,v} man pages

1 files changed, 66 insertions, 0 deletions

diff --git a/lib/libc/sys/pwritev.c b/lib/libc/sys/pwritev.c
new file mode 100644
index 00000000000..ff8c195d426
--- /dev/null
+++ b/lib/libc/sys/pwritev.c
@@ -0,0 +1,66 @@
+/*	$OpenBSD: pwritev.c,v 1.1 2000/04/20 06:34:37 deraadt Exp $	*/
+
+/*
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(SYSLIBC_SCCS) && !defined(lint)
+static char rcsid[] = "$OpenBSD: pwritev.c,v 1.1 2000/04/20 06:34:37 deraadt Exp $";
+#endif /* SYSLIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/syscall.h>
+#include <sys/uio.h>
+#include <unistd.h>
+
+/*
+ * This function provides 64-bit offset padding that
+ * is not supplied by GCC 1.X but is supplied by GCC 2.X.
+ */
+ssize_t
+pwritev(fd, iovp, iovcnt, offset)
+	int fd;
+	const struct iovec *iovp;
+	int iovcnt;
+	off_t offset;
+{
+	quad_t q;
+	int rv;
+
+	q = __syscall((quad_t)SYS_pwritev, fd, iovp, iovcnt, 0, offset);
+	if (/* LINTED constant */ sizeof (quad_t) == sizeof (register_t) ||
+	    /* LINTED constant */ BYTE_ORDER == LITTLE_ENDIAN)
+		rv = (int)q;
+	else
+		rv = (int)((u_quad_t)q >> 32);
+	return rv;
+}