157 lines
3.9 KiB
C
157 lines
3.9 KiB
C
/*-
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* Copyright (c) 2015 Nuxi, https://nuxi.nl/
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/filedesc.h>
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#include <sys/proc.h>
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#include <sys/syscallsubr.h>
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#include <sys/sysproto.h>
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#include <sys/unistd.h>
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#include <compat/cloudabi/cloudabi_proto.h>
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int
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cloudabi_sys_fd_close(struct thread *td, struct cloudabi_sys_fd_close_args *uap)
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{
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return (kern_close(td, uap->fd));
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}
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int
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cloudabi_sys_fd_create1(struct thread *td,
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struct cloudabi_sys_fd_create1_args *uap)
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{
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/* Not implemented. */
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return (ENOSYS);
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}
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int
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cloudabi_sys_fd_create2(struct thread *td,
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struct cloudabi_sys_fd_create2_args *uap)
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{
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/* Not implemented. */
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return (ENOSYS);
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}
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int
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cloudabi_sys_fd_datasync(struct thread *td,
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struct cloudabi_sys_fd_datasync_args *uap)
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{
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struct fsync_args fsync_args = {
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.fd = uap->fd
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};
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/* Call into fsync(), as FreeBSD lacks fdatasync(). */
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return (sys_fsync(td, &fsync_args));
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}
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int
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cloudabi_sys_fd_dup(struct thread *td, struct cloudabi_sys_fd_dup_args *uap)
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{
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return (kern_dup(td, FDDUP_NORMAL, 0, uap->from, 0));
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}
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int
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cloudabi_sys_fd_replace(struct thread *td,
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struct cloudabi_sys_fd_replace_args *uap)
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{
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int error;
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/*
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* CloudABI's equivalent to dup2(). CloudABI processes should
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* not depend on hardcoded file descriptor layouts, but simply
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* use the file descriptor numbers that are allocated by the
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* kernel. Duplicating file descriptors to arbitrary numbers
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* should not be done.
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*
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* Invoke kern_dup() with FDDUP_MUSTREPLACE, so that we return
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* EBADF when duplicating to a nonexistent file descriptor. Also
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* clear the return value, as this system call yields no return
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* value.
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*/
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error = kern_dup(td, FDDUP_MUSTREPLACE, 0, uap->from, uap->to);
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td->td_retval[0] = 0;
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return (error);
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}
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int
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cloudabi_sys_fd_seek(struct thread *td, struct cloudabi_sys_fd_seek_args *uap)
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{
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struct lseek_args lseek_args = {
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.fd = uap->fd,
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.offset = uap->offset
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};
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switch (uap->whence) {
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case CLOUDABI_WHENCE_CUR:
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lseek_args.whence = SEEK_CUR;
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break;
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case CLOUDABI_WHENCE_END:
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lseek_args.whence = SEEK_END;
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break;
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case CLOUDABI_WHENCE_SET:
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lseek_args.whence = SEEK_SET;
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break;
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default:
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return (EINVAL);
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}
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return (sys_lseek(td, &lseek_args));
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}
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int
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cloudabi_sys_fd_stat_get(struct thread *td,
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struct cloudabi_sys_fd_stat_get_args *uap)
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{
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/* Not implemented. */
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return (ENOSYS);
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}
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int
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cloudabi_sys_fd_stat_put(struct thread *td,
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struct cloudabi_sys_fd_stat_put_args *uap)
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{
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/* Not implemented. */
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return (ENOSYS);
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}
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int
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cloudabi_sys_fd_sync(struct thread *td, struct cloudabi_sys_fd_sync_args *uap)
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{
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struct fsync_args fsync_args = {
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.fd = uap->fd
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};
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return (sys_fsync(td, &fsync_args));
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}
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