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glue.c
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glue.c
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/* SPDX-License-Identifier: BSD-3-Clause */
/*
*
* Authors: Charalampos Mainas <[email protected]>
*
*
* Copyright (c) 2019, NEC Europe Ltd., NEC Corporation. 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 copyright holder 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 HOLDER 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.
*
* THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
*/
/*
* stubs
*/
#include <stdio.h>
#include <errno.h>
#include <signal.h>
#include <sys/mman.h>
#include <sys/statfs.h>
#include <sys/stat.h>
#include <uk/essentials.h>
#include <pte_types.h>
#include <sys/epoll.h>
#include <sys/time.h>
int epoll_create(int size __unused)
{
return 0;
}
int epoll_create1(int flags)
{
errno = ENFILE;
return -1;
}
int epoll_ctl(int epfd __unused, int op __unused, int fd __unused, struct epoll_event *event __unused)
{
return 0;
}
int epoll_wait(int epfd __unused, struct epoll_event *events __unused, int maxevents __unused, int timeout __unused)
{
return 0;
}
int madvise(void *addr __unused, size_t length __unused, int advice __unused)
{
return 0;
}
int mincore(void *addr __unused, size_t length __unused, unsigned char *vec __unused)
{
return 0;
}
long ptrace(void)
{
return 0;
}
int reboot(int magic __unused, int magic2 __unused, int cmd __unused, void *arg __unused)
{
return 0;
}
int sched_getaffinity(void)
{
return 0;
}
int settimeofday(const struct timeval *tv __unused, const struct timezone *tz __unused)
{
return 0;
}
#undef sigaddset
int sigaddset(sigset_t *set __unused, int signum __unused)
{
return 0;
}
#undef sigdelset
int sigdelset(sigset_t *set __unused, int signum __unused)
{
return 0;
}
#undef sigemptyset
int sigemptyset(sigset_t *set __unused)
{
return 0;
}
#undef sigfillset
int sigfillset(sigset_t *set __unused)
{
return 0;
}
ssize_t sendfile64(int out_fd __unused, int in_fd __unused, off_t *offset __unused, size_t count __unused)
{
return 1;
}
typedef void loff_t;
ssize_t splice(int fd_in __unused, loff_t *off_in __unused, int fd_out __unused,
loff_t *off_out __unused, size_t len __unused,
unsigned int flags __unused)
{
errno = ENOSYS;
return -1;
}
int sync_file_range(int fd __unused, off64_t offset __unused,
off64_t nbytes __unused, unsigned int flags __unused)
{
errno = EIO;
return -1;
}
struct group;
int getgrouplist(const char *user __unused, gid_t group __unused, gid_t *groups __unused, int *ngroups __unused)
{
return 0;
}
int getgrgid_r(gid_t gid __unused, struct group *grp __unused,
char *buf __unused, size_t buflen __unused, struct group **result __unused)
{
return 0;
}
int unshare(int flags __unused)
{
errno = ENOSYS;
return -1;
}
ssize_t tee(int fd_in __unused, int fd_out __unused, size_t len __unused,
unsigned int flags __unused)
{
errno = ENOSYS;
return -1;
}
typedef void socklen_t;
struct sockaddr;
int accept4(int sockfd __unused, struct sockaddr *addr __unused,
socklen_t *addrlen __unused, int flags __unused)
{
errno = ENOSYS;
return -1;
}
int fchmodat(int dirfd __unused, const char *pathname __unused,
mode_t mode __unused, int flags __unused)
{
errno = ENOSYS;
return -1;
}
int fchownat(int dirfd __unused, const char *pathname __unused,
uid_t owner __unused, gid_t group __unused,
int flags __unused)
{
errno = ENOSYS;
return -1;
}
int mkdirat(int dirfd __unused, const char *pathname __unused,
mode_t mode __unused)
{
errno = ENOSYS;
return -1;
}
int mknodat(int dirfd __unused, const char *pathname __unused,
mode_t mode __unused, dev_t dev __unused)
{
errno = ENOSYS;
return -1;
}
int renameat(int olddirfd __unused, const char *oldpath __unused,
int newdirfd __unused, const char *newpath __unused)
{
errno = ENOSYS;
return -1;
}
int unlinkat(int dirfd __unused, const char *pathname __unused,
int flags __unused)
{
errno = ENOSYS;
return -1;
}
ssize_t getxattr(const char *path __unused, const char *name __unused,
void *value __unused, size_t size __unused)
{
errno = ENOTSUP;
return -1;
}
int setxattr(const char *path __unused, const char *name __unused,
const void *value __unused, size_t size __unused,
int flags __unused)
{
errno = ENOTSUP;
return -1;
}
int removexattr(const char *path __unused, const char *name __unused)
{
errno = ENOTSUP;
return -1;
}
ssize_t listxattr(const char *path __unused, char *list __unused,
size_t size __unused)
{
errno = ENOTSUP;
return -1;
}
int inotify_init(void __unused)
{
errno = ENOSYS;
return -1;
}
int inotify_init1(int flags __unused)
{
errno = ENOSYS;
return -1;
}
int inotify_rm_watch(int fd __unused, int wd __unused)
{
errno = ENOSYS;
return -1;
}
int inotify_add_watch(int fd __unused, const char *pathname __unused,
uint32_t mask __unused)
{
errno = ENOSYS;
return -1;
}
/*
* Glue code
*/
#include <ucontext.h>
#include <uk/sched.h>
#include <uk/thread.h>
#include <uk/asm/limits.h>
#define __errno_location __errno
void makecontext1 (ucontext_t *__ucp, void (*__func) (void), int __argc, ...)
{
struct uk_thread *current = uk_thread_current();
*((unsigned long *) __ucp->uc_stack.ss_sp) = (unsigned long) current;
makecontext(__ucp, __func, __argc);
}
void *alloc_stack()
{
struct uk_sched *sched = uk_sched_get_default();
void *stack;
if (uk_posix_memalign(sched->allocator, &stack,
__STACK_SIZE, __STACK_SIZE) != 0)
printf("error allocating stack\n");
return stack;
}
size_t get_stack_size(void)
{
return __STACK_SIZE;
}