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freebsd-dev/sys/compat/cloudabi/cloudabi_file.c

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Import the CloudABI datatypes and create a system call table. CloudABI is a pure capability-based runtime environment for UNIX. It works similar to Capsicum, except that processes already run in capabilities mode on startup. All functionality that conflicts with this model has been omitted, making it a compact binary interface that can be supported by other operating systems without too much effort. CloudABI is 'secure by default'; the idea is that it should be safe to run arbitrary third-party binaries without requiring any explicit hardware virtualization (Bhyve) or namespace virtualization (Jails). The rights of an application are purely determined by the set of file descriptors that you grant it on startup. The datatypes and constants used by CloudABI's C library (cloudlibc) are defined in separate files called syscalldefs_mi.h (pointer size independent) and syscalldefs_md.h (pointer size dependent). We import these files in sys/contrib/cloudabi and wrap around them in cloudabi*_syscalldefs.h. We then add stubs for all of the system calls in sys/compat/cloudabi or sys/compat/cloudabi64, depending on whether the system call depends on the pointer size. We only have nine system calls that depend on the pointer size. If we ever want to support 32-bit binaries, we can simply add sys/compat/cloudabi32 and implement these nine system calls again. The next step is to send in code reviews for the individual system call implementations, but also add a sysentvec, to allow CloudABI executabled to be started through execve(). More information about CloudABI: - GitHub: https://github.com/NuxiNL/cloudlibc - Talk at BSDCan: https://www.youtube.com/watch?v=SVdF84x1EdA Differential Revision: https://reviews.freebsd.org/D2848 Reviewed by: emaste, brooks Obtained from: https://github.com/NuxiNL/freebsd
2015-07-09 07:20:15 +00:00
/*-
* 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("$FreeBSD$");
Make posix_fallocate() and posix_fadvise() work. We can map these system calls directly to the FreeBSD counterparts. The other filesystem related system calls will be sent out for review separately, as they are a bit more complex to get right.
2015-07-15 09:14:06 +00:00
#include <sys/param.h>
#include <sys/fcntl.h>
#include <sys/syscallsubr.h>
Import the CloudABI datatypes and create a system call table. CloudABI is a pure capability-based runtime environment for UNIX. It works similar to Capsicum, except that processes already run in capabilities mode on startup. All functionality that conflicts with this model has been omitted, making it a compact binary interface that can be supported by other operating systems without too much effort. CloudABI is 'secure by default'; the idea is that it should be safe to run arbitrary third-party binaries without requiring any explicit hardware virtualization (Bhyve) or namespace virtualization (Jails). The rights of an application are purely determined by the set of file descriptors that you grant it on startup. The datatypes and constants used by CloudABI's C library (cloudlibc) are defined in separate files called syscalldefs_mi.h (pointer size independent) and syscalldefs_md.h (pointer size dependent). We import these files in sys/contrib/cloudabi and wrap around them in cloudabi*_syscalldefs.h. We then add stubs for all of the system calls in sys/compat/cloudabi or sys/compat/cloudabi64, depending on whether the system call depends on the pointer size. We only have nine system calls that depend on the pointer size. If we ever want to support 32-bit binaries, we can simply add sys/compat/cloudabi32 and implement these nine system calls again. The next step is to send in code reviews for the individual system call implementations, but also add a sysentvec, to allow CloudABI executabled to be started through execve(). More information about CloudABI: - GitHub: https://github.com/NuxiNL/cloudlibc - Talk at BSDCan: https://www.youtube.com/watch?v=SVdF84x1EdA Differential Revision: https://reviews.freebsd.org/D2848 Reviewed by: emaste, brooks Obtained from: https://github.com/NuxiNL/freebsd
2015-07-09 07:20:15 +00:00
#include <compat/cloudabi/cloudabi_proto.h>
Make posix_fallocate() and posix_fadvise() work. We can map these system calls directly to the FreeBSD counterparts. The other filesystem related system calls will be sent out for review separately, as they are a bit more complex to get right.
2015-07-15 09:14:06 +00:00
#include <compat/cloudabi/cloudabi_syscalldefs.h>
Import the CloudABI datatypes and create a system call table. CloudABI is a pure capability-based runtime environment for UNIX. It works similar to Capsicum, except that processes already run in capabilities mode on startup. All functionality that conflicts with this model has been omitted, making it a compact binary interface that can be supported by other operating systems without too much effort. CloudABI is 'secure by default'; the idea is that it should be safe to run arbitrary third-party binaries without requiring any explicit hardware virtualization (Bhyve) or namespace virtualization (Jails). The rights of an application are purely determined by the set of file descriptors that you grant it on startup. The datatypes and constants used by CloudABI's C library (cloudlibc) are defined in separate files called syscalldefs_mi.h (pointer size independent) and syscalldefs_md.h (pointer size dependent). We import these files in sys/contrib/cloudabi and wrap around them in cloudabi*_syscalldefs.h. We then add stubs for all of the system calls in sys/compat/cloudabi or sys/compat/cloudabi64, depending on whether the system call depends on the pointer size. We only have nine system calls that depend on the pointer size. If we ever want to support 32-bit binaries, we can simply add sys/compat/cloudabi32 and implement these nine system calls again. The next step is to send in code reviews for the individual system call implementations, but also add a sysentvec, to allow CloudABI executabled to be started through execve(). More information about CloudABI: - GitHub: https://github.com/NuxiNL/cloudlibc - Talk at BSDCan: https://www.youtube.com/watch?v=SVdF84x1EdA Differential Revision: https://reviews.freebsd.org/D2848 Reviewed by: emaste, brooks Obtained from: https://github.com/NuxiNL/freebsd
2015-07-09 07:20:15 +00:00
int
cloudabi_sys_file_advise(struct thread *td,
struct cloudabi_sys_file_advise_args *uap)
{
Make posix_fallocate() and posix_fadvise() work. We can map these system calls directly to the FreeBSD counterparts. The other filesystem related system calls will be sent out for review separately, as they are a bit more complex to get right.
2015-07-15 09:14:06 +00:00
int advice;
switch (uap->advice) {
case CLOUDABI_ADVICE_DONTNEED:
advice = POSIX_FADV_DONTNEED;
break;
case CLOUDABI_ADVICE_NOREUSE:
advice = POSIX_FADV_NOREUSE;
break;
case CLOUDABI_ADVICE_NORMAL:
advice = POSIX_FADV_NORMAL;
break;
case CLOUDABI_ADVICE_RANDOM:
advice = POSIX_FADV_RANDOM;
break;
case CLOUDABI_ADVICE_SEQUENTIAL:
advice = POSIX_FADV_SEQUENTIAL;
break;
case CLOUDABI_ADVICE_WILLNEED:
advice = POSIX_FADV_WILLNEED;
break;
default:
return (EINVAL);
}
return (kern_posix_fadvise(td, uap->fd, uap->offset, uap->len, advice));
Import the CloudABI datatypes and create a system call table. CloudABI is a pure capability-based runtime environment for UNIX. It works similar to Capsicum, except that processes already run in capabilities mode on startup. All functionality that conflicts with this model has been omitted, making it a compact binary interface that can be supported by other operating systems without too much effort. CloudABI is 'secure by default'; the idea is that it should be safe to run arbitrary third-party binaries without requiring any explicit hardware virtualization (Bhyve) or namespace virtualization (Jails). The rights of an application are purely determined by the set of file descriptors that you grant it on startup. The datatypes and constants used by CloudABI's C library (cloudlibc) are defined in separate files called syscalldefs_mi.h (pointer size independent) and syscalldefs_md.h (pointer size dependent). We import these files in sys/contrib/cloudabi and wrap around them in cloudabi*_syscalldefs.h. We then add stubs for all of the system calls in sys/compat/cloudabi or sys/compat/cloudabi64, depending on whether the system call depends on the pointer size. We only have nine system calls that depend on the pointer size. If we ever want to support 32-bit binaries, we can simply add sys/compat/cloudabi32 and implement these nine system calls again. The next step is to send in code reviews for the individual system call implementations, but also add a sysentvec, to allow CloudABI executabled to be started through execve(). More information about CloudABI: - GitHub: https://github.com/NuxiNL/cloudlibc - Talk at BSDCan: https://www.youtube.com/watch?v=SVdF84x1EdA Differential Revision: https://reviews.freebsd.org/D2848 Reviewed by: emaste, brooks Obtained from: https://github.com/NuxiNL/freebsd
2015-07-09 07:20:15 +00:00
}
int
cloudabi_sys_file_allocate(struct thread *td,
struct cloudabi_sys_file_allocate_args *uap)
{
Make posix_fallocate() and posix_fadvise() work. We can map these system calls directly to the FreeBSD counterparts. The other filesystem related system calls will be sent out for review separately, as they are a bit more complex to get right.
2015-07-15 09:14:06 +00:00
return (kern_posix_fallocate(td, uap->fd, uap->offset, uap->len));
Import the CloudABI datatypes and create a system call table. CloudABI is a pure capability-based runtime environment for UNIX. It works similar to Capsicum, except that processes already run in capabilities mode on startup. All functionality that conflicts with this model has been omitted, making it a compact binary interface that can be supported by other operating systems without too much effort. CloudABI is 'secure by default'; the idea is that it should be safe to run arbitrary third-party binaries without requiring any explicit hardware virtualization (Bhyve) or namespace virtualization (Jails). The rights of an application are purely determined by the set of file descriptors that you grant it on startup. The datatypes and constants used by CloudABI's C library (cloudlibc) are defined in separate files called syscalldefs_mi.h (pointer size independent) and syscalldefs_md.h (pointer size dependent). We import these files in sys/contrib/cloudabi and wrap around them in cloudabi*_syscalldefs.h. We then add stubs for all of the system calls in sys/compat/cloudabi or sys/compat/cloudabi64, depending on whether the system call depends on the pointer size. We only have nine system calls that depend on the pointer size. If we ever want to support 32-bit binaries, we can simply add sys/compat/cloudabi32 and implement these nine system calls again. The next step is to send in code reviews for the individual system call implementations, but also add a sysentvec, to allow CloudABI executabled to be started through execve(). More information about CloudABI: - GitHub: https://github.com/NuxiNL/cloudlibc - Talk at BSDCan: https://www.youtube.com/watch?v=SVdF84x1EdA Differential Revision: https://reviews.freebsd.org/D2848 Reviewed by: emaste, brooks Obtained from: https://github.com/NuxiNL/freebsd
2015-07-09 07:20:15 +00:00
}
int
cloudabi_sys_file_create(struct thread *td,
struct cloudabi_sys_file_create_args *uap)
{
/* Not implemented. */
return (ENOSYS);
}
int
cloudabi_sys_file_link(struct thread *td,
struct cloudabi_sys_file_link_args *uap)
{
/* Not implemented. */
return (ENOSYS);
}
int
cloudabi_sys_file_open(struct thread *td,
struct cloudabi_sys_file_open_args *uap)
{
/* Not implemented. */
return (ENOSYS);
}
int
cloudabi_sys_file_readdir(struct thread *td,
struct cloudabi_sys_file_readdir_args *uap)
{
/* Not implemented. */
return (ENOSYS);
}
int
cloudabi_sys_file_readlink(struct thread *td,
struct cloudabi_sys_file_readlink_args *uap)
{
/* Not implemented. */
return (ENOSYS);
}
int
cloudabi_sys_file_rename(struct thread *td,
struct cloudabi_sys_file_rename_args *uap)
{
/* Not implemented. */
return (ENOSYS);
}
int
cloudabi_sys_file_stat_fget(struct thread *td,
struct cloudabi_sys_file_stat_fget_args *uap)
{
/* Not implemented. */
return (ENOSYS);
}
int
cloudabi_sys_file_stat_fput(struct thread *td,
struct cloudabi_sys_file_stat_fput_args *uap)
{
/* Not implemented. */
return (ENOSYS);
}
int
cloudabi_sys_file_stat_get(struct thread *td,
struct cloudabi_sys_file_stat_get_args *uap)
{
/* Not implemented. */
return (ENOSYS);
}
int
cloudabi_sys_file_stat_put(struct thread *td,
struct cloudabi_sys_file_stat_put_args *uap)
{
/* Not implemented. */
return (ENOSYS);
}
int
cloudabi_sys_file_symlink(struct thread *td,
struct cloudabi_sys_file_symlink_args *uap)
{
/* Not implemented. */
return (ENOSYS);
}
int
cloudabi_sys_file_unlink(struct thread *td,
struct cloudabi_sys_file_unlink_args *uap)
{
/* Not implemented. */
return (ENOSYS);
}
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