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/*-
* Copyright (c) 2015 Nuxi, https://nuxi.nl/
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/mman.h>
#include <sys/sysproto.h>
#include <compat/cloudabi/cloudabi_proto.h>
#include <compat/cloudabi/cloudabi_syscalldefs.h>
/* Converts CloudABI's memory protection flags to FreeBSD's. */
static int
convert_mprot(cloudabi_mprot_t in, int *out)
{
/* Unknown protection flags. */
if ((in & ~(CLOUDABI_PROT_EXEC | CLOUDABI_PROT_WRITE |
CLOUDABI_PROT_READ)) != 0)
return (ENOTSUP);
/* W^X: Write and exec cannot be enabled at the same time. */
if ((in & (CLOUDABI_PROT_EXEC | CLOUDABI_PROT_WRITE)) ==
(CLOUDABI_PROT_EXEC | CLOUDABI_PROT_WRITE))
return (ENOTSUP);
*out = 0;
if (in & CLOUDABI_PROT_EXEC)
*out |= PROT_EXEC;
if (in & CLOUDABI_PROT_WRITE)
*out |= PROT_WRITE;
if (in & CLOUDABI_PROT_READ)
*out |= PROT_READ;
return (0);
}
int
cloudabi_sys_mem_advise(struct thread *td,
struct cloudabi_sys_mem_advise_args *uap)
{
struct madvise_args madvise_args = {
.addr = uap->addr,
.len = uap->len
};
switch (uap->advice) {
case CLOUDABI_ADVICE_DONTNEED:
madvise_args.behav = MADV_DONTNEED;
break;
case CLOUDABI_ADVICE_NORMAL:
madvise_args.behav = MADV_NORMAL;
break;
case CLOUDABI_ADVICE_RANDOM:
madvise_args.behav = MADV_RANDOM;
break;
case CLOUDABI_ADVICE_SEQUENTIAL:
madvise_args.behav = MADV_SEQUENTIAL;
break;
case CLOUDABI_ADVICE_WILLNEED:
madvise_args.behav = MADV_WILLNEED;
break;
default:
return (EINVAL);
}
return (sys_madvise(td, &madvise_args));
}
int
cloudabi_sys_mem_lock(struct thread *td, struct cloudabi_sys_mem_lock_args *uap)
{
struct mlock_args mlock_args = {
.addr = uap->addr,
.len = uap->len
};
return (sys_mlock(td, &mlock_args));
}
int
cloudabi_sys_mem_map(struct thread *td, struct cloudabi_sys_mem_map_args *uap)
{
struct mmap_args mmap_args = {
.addr = uap->addr,
.len = uap->len,
.fd = uap->fd,
.pos = uap->off
};
int error;
/* Translate flags. */
if (uap->flags & CLOUDABI_MAP_ANON)
mmap_args.flags |= MAP_ANON;
if (uap->flags & CLOUDABI_MAP_FIXED)
mmap_args.flags |= MAP_FIXED;
if (uap->flags & CLOUDABI_MAP_PRIVATE)
mmap_args.flags |= MAP_PRIVATE;
if (uap->flags & CLOUDABI_MAP_SHARED)
mmap_args.flags |= MAP_SHARED;
/* Translate protection. */
error = convert_mprot(uap->prot, &mmap_args.prot);
if (error != 0)
return (error);
return (sys_mmap(td, &mmap_args));
}
int
cloudabi_sys_mem_protect(struct thread *td,
struct cloudabi_sys_mem_protect_args *uap)
{
struct mprotect_args mprotect_args = {
.addr = uap->addr,
.len = uap->len,
};
int error;
/* Translate protection. */
error = convert_mprot(uap->prot, &mprotect_args.prot);
if (error != 0)
return (error);
return (sys_mprotect(td, &mprotect_args));
}
int
cloudabi_sys_mem_sync(struct thread *td, struct cloudabi_sys_mem_sync_args *uap)
{
struct msync_args msync_args = {
.addr = uap->addr,
.len = uap->len,
};
/* Convert flags. */
switch (uap->flags & (CLOUDABI_MS_ASYNC | CLOUDABI_MS_SYNC)) {
case CLOUDABI_MS_ASYNC:
msync_args.flags |= MS_ASYNC;
break;
case CLOUDABI_MS_SYNC:
msync_args.flags |= MS_SYNC;
break;
default:
return (EINVAL);
}
if ((uap->flags & CLOUDABI_MS_INVALIDATE) != 0)
msync_args.flags |= MS_INVALIDATE;
return (sys_msync(td, &msync_args));
}
int
cloudabi_sys_mem_unlock(struct thread *td,
struct cloudabi_sys_mem_unlock_args *uap)
{
struct munlock_args munlock_args = {
.addr = uap->addr,
.len = uap->len
};
return (sys_munlock(td, &munlock_args));
}
int
cloudabi_sys_mem_unmap(struct thread *td,
struct cloudabi_sys_mem_unmap_args *uap)
{
struct munmap_args munmap_args = {
.addr = uap->addr,
.len = uap->len
};
return (sys_munmap(td, &munmap_args));
}
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