From 5a064ce758921ff6e0451506085399c8a82f6f6c Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Sat, 20 Sep 2025 21:33:49 -0400 Subject: kern: syscall: Add initial write(2) stub Here we add a write(2) stub and add it to the UNIX syscall interface. We also move the UNIX syscall numbers into compat/unix/syscall.h Signed-off-by: Ian Moffett --- src/sys/compat/unix/os/os_filedesc.c | 52 ++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 src/sys/compat/unix/os/os_filedesc.c (limited to 'src/sys/compat/unix/os/os_filedesc.c') diff --git a/src/sys/compat/unix/os/os_filedesc.c b/src/sys/compat/unix/os/os_filedesc.c new file mode 100644 index 0000000..f36bd02 --- /dev/null +++ b/src/sys/compat/unix/os/os_filedesc.c @@ -0,0 +1,52 @@ +/* + * Copyright (c) 2025 Ian Marco Moffett and L5 engineers + * 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. Neither the name of the project 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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. + */ + +#include +#include +#include +#include + +#include + +/* + * Write syscall + * + * ARG0: (int)fd + * ARG1: (const void *)buf + * ARG2: (size_t)count + */ +scret_t +sys_write(struct syscall_args *scargs) +{ + int fd = SCARG(scargs, int, 0); + const void *buf = SCARG(scargs, const void *, 1); + size_t count = SCARG(scargs, size_t, 2); + + return write(fd, buf, count); +} -- cgit v1.2.3