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rt-thread-official/components/lwp/lwp_syscall.c

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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2018-06-10 Bernard first version
* 2021-02-03 lizhirui add limit condition for network syscall and add 64-bit arch support
* 2021-02-06 lizhirui fix some bugs
* 2021-02-12 lizhirui add 64-bit support for sys_brk
* 2021-02-20 lizhirui fix some warnings
* 2023-03-13 WangXiaoyao Format & fix syscall return value
* 2023-07-06 Shell adapt the signal API, and clone, fork to new implementation of lwp signal
* 2023-07-27 Shell Move tid_put() from lwp_free() to sys_exit()
* 2023-11-16 xqyjlj fix some syscalls (about sched_*, get/setpriority)
* 2023-11-17 xqyjlj add process group and session support
* 2023-11-30 Shell Fix sys_setitimer() and exit(status)
*/
#define __RT_IPC_SOURCE__
#define _GNU_SOURCE
/* RT-Thread System call */
#include <rtthread.h>
#include <rthw.h>
#include <board.h>
#include <string.h>
#include <stdint.h>
#define DBG_TAG "lwp.syscall"
#define DBG_LVL DBG_INFO
#include <rtdbg.h>
#include "syscall_generic.h"
#include "libc_musl.h"
#include "lwp_internal.h"
#ifdef ARCH_MM_MMU
#include <mm_aspace.h>
#include <lwp_user_mm.h>
#include <lwp_arch.h>
#endif
#include <fcntl.h>
#include <sys/utsname.h>
#ifdef RT_USING_DFS
#include <eventfd.h>
#include <poll.h>
#include <sys/epoll.h>
#include <sys/select.h>
#include <dfs_file.h>
#ifdef RT_USING_DFS_V2
#include <dfs_dentry.h>
#endif
#include <unistd.h>
#include <stdio.h> /* rename() */
#include <sys/stat.h>
#include <sys/statfs.h> /* statfs() */
#include <sys/timerfd.h>
#include <sys/ioctl.h>
#ifdef RT_USING_MUSLLIBC
#include <sys/signalfd.h>
#endif
#endif
#include "mqueue.h"
#ifdef RT_USING_SAL
#include <netdev_ipaddr.h>
#include <netdev.h>
#include <sal_netdb.h>
#include <sal_socket.h>
#include <sys/socket.h>
#endif /* RT_USING_SAL */
#if (defined(RT_USING_SAL) && defined(SAL_USING_POSIX))
#include <sys/socket.h>
#define SYSCALL_NET(f) f
#else
#define SYSCALL_NET(f) SYSCALL_SIGN(sys_notimpl)
#endif /* (defined(RT_USING_SAL) && defined(SAL_USING_POSIX)) */
#if defined(RT_USING_DFS) && defined(ARCH_MM_MMU)
#define SYSCALL_USPACE(f) f
#else
#define SYSCALL_USPACE(f) SYSCALL_SIGN(sys_notimpl)
#endif /* defined(RT_USING_DFS) && defined(ARCH_MM_MMU) */
#include "lwp_ipc_internal.h"
#include <sched.h>
#include <sys/sysinfo.h>
#ifndef GRND_NONBLOCK
#define GRND_NONBLOCK 0x0001
#endif /* GRND_NONBLOCK */
#ifndef GRND_RANDOM
#define GRND_RANDOM 0x0002
#endif /*GRND_RANDOM */
#ifndef RT_USING_POSIX_TIMER
#error "No definition RT_USING_POSIX_TIMER"
#endif /* RT_USING_POSIX_TIMER */
#ifndef RT_USING_POSIX_CLOCK
#error "No definition RT_USING_POSIX_CLOCK"
#endif /* RT_USING_POSIX_CLOCK */
void lwp_cleanup(struct rt_thread *tid);
#ifdef ARCH_MM_MMU
#define ALLOC_KERNEL_STACK_SIZE 5120
static void *kmem_get(size_t size)
{
return rt_malloc(size);
}
static void kmem_put(void *kptr)
{
rt_free(kptr);
}
#else /* ARCH_MM_MMU */
#define ALLOC_KERNEL_STACK_SIZE 1536
#define ALLOC_KERNEL_STACK_SIZE_MIN 1024
#define ALLOC_KERNEL_STACK_SIZE_MAX 4096
extern void set_user_context(void *stack);
#endif /* ARCH_MM_MMU */
#ifdef RT_USING_SAL
/* The same socket option is defined differently in the user interfaces and the
* implementation. The options should be converted in the kernel. */
#include "lwp_sys_socket.h"
static void convert_sockopt(int *level, int *optname)
{
if (*level == INTF_SOL_SOCKET)
{
*level = IMPL_SOL_SOCKET;
switch (*optname)
{
case INTF_SO_REUSEADDR:
*optname = IMPL_SO_REUSEADDR;
break;
case INTF_SO_KEEPALIVE:
*optname = IMPL_SO_KEEPALIVE;
break;
case INTF_SO_BROADCAST:
*optname = IMPL_SO_BROADCAST;
break;
case INTF_SO_ACCEPTCONN:
*optname = IMPL_SO_ACCEPTCONN;
break;
case INTF_SO_DONTROUTE:
*optname = IMPL_SO_DONTROUTE;
break;
case INTF_SO_LINGER:
*optname = IMPL_SO_LINGER;
break;
case INTF_SO_OOBINLINE:
*optname = IMPL_SO_OOBINLINE;
break;
case INTF_SO_REUSEPORT:
*optname = IMPL_SO_REUSEPORT;
break;
case INTF_SO_SNDBUF:
*optname = IMPL_SO_SNDBUF;
break;
case INTF_SO_RCVBUF:
*optname = IMPL_SO_RCVBUF;
break;
case INTF_SO_SNDLOWAT:
*optname = IMPL_SO_SNDLOWAT;
break;
case INTF_SO_RCVLOWAT:
*optname = IMPL_SO_RCVLOWAT;
break;
case INTF_SO_SNDTIMEO:
*optname = IMPL_SO_SNDTIMEO;
break;
case INTF_SO_RCVTIMEO:
*optname = IMPL_SO_RCVTIMEO;
break;
case INTF_SO_ERROR:
*optname = IMPL_SO_ERROR;
break;
case INTF_SO_TYPE:
*optname = IMPL_SO_TYPE;
break;
case INTF_SO_NO_CHECK:
*optname = IMPL_SO_NO_CHECK;
break;
case INTF_SO_BINDTODEVICE:
*optname = IMPL_SO_BINDTODEVICE;
break;
case INTF_SO_TIMESTAMPNS:
*optname = IMPL_SO_TIMESTAMPNS;
break;
case INTF_SO_TIMESTAMPING:
*optname = IMPL_SO_TIMESTAMPING;
break;
case INTF_SO_SELECT_ERR_QUEUE:
*optname = IMPL_SO_SELECT_ERR_QUEUE;
break;
/*
* SO_DONTLINGER (*level = ((int)(~SO_LINGER))),
* SO_USELOOPBACK (*level = 0x0040) and
* SO_CONTIMEO (*level = 0x1009) are not supported for now.
*/
default:
*optname = 0;
break;
}
return;
}
if (*level == INTF_IPPROTO_IP)
{
*level = IMPL_IPPROTO_IP;
switch (*optname)
{
case INTF_IP_TTL:
*optname = IMPL_IP_TTL;
break;
case INTF_IP_TOS:
*optname = IMPL_IP_TOS;
break;
case INTF_IP_MULTICAST_TTL:
*optname = IMPL_IP_MULTICAST_TTL;
break;
case INTF_IP_MULTICAST_IF:
*optname = IMPL_IP_MULTICAST_IF;
break;
case INTF_IP_MULTICAST_LOOP:
*optname = IMPL_IP_MULTICAST_LOOP;
break;
case INTF_IP_ADD_MEMBERSHIP:
*optname = IMPL_IP_ADD_MEMBERSHIP;
break;
case INTF_IP_DROP_MEMBERSHIP:
*optname = IMPL_IP_DROP_MEMBERSHIP;
break;
default:
break;
}
}
if (*level == INTF_IPPROTO_TCP)
{
*level = IMPL_IPPROTO_TCP;
switch (*optname)
{
case INTF_TCP_NODELAY:
*optname = IMPL_TCP_NODELAY;
break;
case INTF_TCP_KEEPALIVE:
*optname = IMPL_TCP_KEEPALIVE;
break;
case INTF_TCP_KEEPIDLE:
*optname = IMPL_TCP_KEEPIDLE;
break;
case INTF_TCP_KEEPINTVL:
*optname = IMPL_TCP_KEEPINTVL;
break;
case INTF_TCP_KEEPCNT:
*optname = IMPL_TCP_KEEPCNT;
break;
default:
break;
}
return;
}
if (*level == INTF_IPPROTO_IPV6)
{
*level = IMPL_IPPROTO_IPV6;
switch (*optname)
{
case INTF_IPV6_V6ONLY:
*optname = IMPL_IPV6_V6ONLY;
break;
default:
break;
}
return;
}
}
#endif /* RT_USING_SAL */
#if defined(RT_USING_LWIP) || defined(SAL_USING_UNET)
static void sockaddr_tolwip(const struct musl_sockaddr *std, struct sockaddr *lwip)
{
if (std && lwip)
{
lwip->sa_len = sizeof(*lwip);
lwip->sa_family = (sa_family_t) std->sa_family;
memcpy(lwip->sa_data, std->sa_data, sizeof(lwip->sa_data));
}
}
static void sockaddr_tomusl(const struct sockaddr *lwip, struct musl_sockaddr *std)
{
if (std && lwip)
{
std->sa_family = (uint16_t) lwip->sa_family;
memcpy(std->sa_data, lwip->sa_data, sizeof(std->sa_data));
}
}
#endif
static void _crt_thread_entry(void *parameter)
{
rt_thread_t tid;
rt_size_t user_stack;
tid = rt_thread_self();
user_stack = (rt_size_t)tid->user_stack + tid->user_stack_size;
user_stack &= ~7; //align 8
#ifdef ARCH_MM_MMU
arch_crt_start_umode(parameter, tid->user_entry, (void *)user_stack, (char *)tid->stack_addr + tid->stack_size);
#else
set_user_context((void*)user_stack);
arch_start_umode(parameter, tid->user_entry, ((struct rt_lwp *)tid->lwp)->data_entry, (void*)user_stack);
#endif /* ARCH_MM_MMU */
}
/* exit group */
sysret_t sys_exit_group(int value)
{
sysret_t rc = 0;
lwp_status_t lwp_status;
struct rt_lwp *lwp = lwp_self();
if (lwp)
{
lwp_status = LWP_CREATE_STAT_EXIT(value);
lwp_exit(lwp, lwp_status);
}
else
{
LOG_E("Can't find matching process of current thread");
rc = -EINVAL;
}
return rc;
}
/* thread exit */
sysret_t sys_exit(int status)
{
sysret_t rc = 0;
rt_thread_t tid;
tid = rt_thread_self();
if (tid && tid->lwp)
{
lwp_thread_exit(tid, status);
}
else
{
LOG_E("Can't find matching process of current thread");
rc = -EINVAL;
}
return rc;
}
/* syscall: "read" ret: "ssize_t" args: "int" "void *" "size_t" */
ssize_t sys_read(int fd, void *buf, size_t nbyte)
{
#ifdef ARCH_MM_MMU
void *kmem = RT_NULL;
ssize_t ret = -1;
if (!nbyte)
{
return -EINVAL;
}
if (!lwp_user_accessable((void *)buf, nbyte))
{
return -EFAULT;
}
kmem = kmem_get(nbyte);
if (!kmem)
{
return -ENOMEM;
}
ret = read(fd, kmem, nbyte);
if (ret > 0)
{
if (ret != lwp_put_to_user(buf, kmem, ret))
return -EFAULT;
}
if (ret < 0)
{
ret = GET_ERRNO();
}
kmem_put(kmem);
return ret;
#else
if (!lwp_user_accessable((void *)buf, nbyte))
{
return -EFAULT;
}
ssize_t ret = read(fd, buf, nbyte);
return (ret < 0 ? GET_ERRNO() : ret);
#endif
}
/* syscall: "write" ret: "ssize_t" args: "int" "const void *" "size_t" */
ssize_t sys_write(int fd, const void *buf, size_t nbyte)
{
#ifdef ARCH_MM_MMU
void *kmem = RT_NULL;
ssize_t ret = -1;
if (nbyte)
{
if (!lwp_user_accessable((void *)buf, nbyte))
{
return -EFAULT;
}
kmem = kmem_get(nbyte);
if (!kmem)
{
return -ENOMEM;
}
lwp_get_from_user(kmem, (void *)buf, nbyte);
}
ret = write(fd, kmem, nbyte);
if (ret < 0)
{
ret = GET_ERRNO();
}
kmem_put(kmem);
return ret;
#else
if (!lwp_user_accessable((void *)buf, nbyte))
{
return -EFAULT;
}
ssize_t ret = write(fd, buf, nbyte);
return (ret < 0 ? GET_ERRNO() : ret);
#endif
}
/* syscall: "lseek" ret: "off_t" args: "int" "off_t" "int" */
size_t sys_lseek(int fd, size_t offset, int whence)
{
ssize_t ret = lseek(fd, offset, whence);
return (ret < 0 ? GET_ERRNO() : ret);
}
/* syscall: "open" ret: "int" args: "const char *" "int" "..." */
sysret_t sys_open(const char *name, int flag, ...)
{
#ifdef ARCH_MM_MMU
int ret = -1;
rt_size_t len = 0;
char *kname = RT_NULL;
mode_t mode = 0;
if (!lwp_user_accessable((void *)name, 1))
{
return -EFAULT;
}
len = lwp_user_strlen(name);
if (!len)
{
return -EINVAL;
}
kname = (char *)kmem_get(len + 1);
if (!kname)
{
return -ENOMEM;
}
if ((flag & O_CREAT) || (flag & O_TMPFILE) == O_TMPFILE)
{
va_list ap;
va_start(ap, flag);
mode = va_arg(ap, mode_t);
va_end(ap);
}
if (lwp_get_from_user(kname, (void *)name, len + 1) != (len + 1))
{
kmem_put(kname);
return -EINVAL;
}
ret = open(kname, flag, mode);
if (ret < 0)
{
ret = GET_ERRNO();
}
kmem_put(kname);
return ret;
#else
int ret;
mode_t mode = 0;
if (!lwp_user_accessable((void *)name, 1))
{
return -EFAULT;
}
if ((flag & O_CREAT) || (flag & O_TMPFILE) == O_TMPFILE)
{
va_list ap;
va_start(ap, flag);
mode = va_arg(ap, mode_t);
va_end(ap);
}
ret = open(name, flag, mode);
return (ret < 0 ? GET_ERRNO() : ret);
#endif
}
/* syscall: "openat" ret: "int" args: "const char *" "mode_t" "mode" */
sysret_t sys_openat(int dirfd, const char *name, int flag, mode_t mode)
{
#ifdef ARCH_MM_MMU
int ret = -1;
rt_size_t len = 0;
char *kname = RT_NULL;
len = lwp_user_strlen(name);
if (len <= 0)
{
return -EINVAL;
}
kname = (char *)kmem_get(len + 1);
if (!kname)
{
return -ENOMEM;
}
lwp_get_from_user(kname, (void *)name, len + 1);
ret = openat(dirfd, kname, flag, mode);
if (ret < 0)
{
ret = GET_ERRNO();
}
kmem_put(kname);
return ret;
#else
if (!lwp_user_accessable((void *)name, 1))
{
return -EFAULT;
}
int ret = openat(dirfd, name, flag, mode);
return (ret < 0 ? GET_ERRNO() : ret);
#endif
}
/* syscall: "close" ret: "int" args: "int" */
sysret_t sys_close(int fd)
{
int ret = close(fd);
return (ret < 0 ? GET_ERRNO() : ret);
}
/* syscall: "ioctl" ret: "int" args: "int" "u_long" "..." */
sysret_t sys_ioctl(int fd, unsigned long cmd, void* data)
{
int ret = ioctl(fd, cmd, data);
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_fstat(int file, struct stat *buf)
{
#ifdef ARCH_MM_MMU
int ret = -1;
struct stat statbuff = {0};
if (!lwp_user_accessable((void *)buf, sizeof(struct stat)))
{
return -EFAULT;
}
else
{
ret = fstat(file, &statbuff);
if (ret == 0)
{
lwp_put_to_user(buf, &statbuff, sizeof statbuff);
}
else
{
ret = GET_ERRNO();
}
return ret;
}
#else
if (!lwp_user_accessable((void *)buf, sizeof(struct stat)))
{
return -EFAULT;
}
int ret = fstat(file, buf);
return (ret < 0 ? GET_ERRNO() : ret);
#endif
}
sysret_t sys_poll(struct pollfd *fds, nfds_t nfds, int timeout)
{
int ret = -1;
#ifdef ARCH_MM_MMU
struct pollfd *kfds = RT_NULL;
if (!lwp_user_accessable((void *)fds, nfds * sizeof *fds))
{
return -EFAULT;
}
kfds = (struct pollfd *)kmem_get(nfds * sizeof *kfds);
if (!kfds)
{
return -ENOMEM;
}
lwp_get_from_user(kfds, fds, nfds * sizeof *kfds);
ret = poll(kfds, nfds, timeout);
if (ret > 0)
{
lwp_put_to_user(fds, kfds, nfds * sizeof *kfds);
}
kmem_put(kfds);
return ret;
#else
if (!lwp_user_accessable((void *)fds, nfds * sizeof *fds))
{
return -EFAULT;
}
ret = poll(fds, nfds, timeout);
return ret;
#endif /* ARCH_MM_MMU */
}
sysret_t sys_select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout)
{
#ifdef ARCH_MM_MMU
int ret = -1;
fd_set *kreadfds = RT_NULL, *kwritefds = RT_NULL, *kexceptfds = RT_NULL;
if (readfds)
{
if (!lwp_user_accessable((void *)readfds, sizeof *readfds))
{
SET_ERRNO(EFAULT);
goto quit;
}
kreadfds = (fd_set *)kmem_get(sizeof *kreadfds);
if (!kreadfds)
{
SET_ERRNO(ENOMEM);
goto quit;
}
lwp_get_from_user(kreadfds, readfds, sizeof *kreadfds);
}
if (writefds)
{
if (!lwp_user_accessable((void *)writefds, sizeof *writefds))
{
SET_ERRNO(EFAULT);
goto quit;
}
kwritefds = (fd_set *)kmem_get(sizeof *kwritefds);
if (!kwritefds)
{
SET_ERRNO(ENOMEM);
goto quit;
}
lwp_get_from_user(kwritefds, writefds, sizeof *kwritefds);
}
if (exceptfds)
{
if (!lwp_user_accessable((void *)exceptfds, sizeof *exceptfds))
{
SET_ERRNO(EFAULT);
goto quit;
}
kexceptfds = (fd_set *)kmem_get(sizeof *kexceptfds);
if (!kexceptfds)
{
SET_ERRNO(EINVAL);
goto quit;
}
lwp_get_from_user(kexceptfds, exceptfds, sizeof *kexceptfds);
}
ret = select(nfds, kreadfds, kwritefds, kexceptfds, timeout);
if (kreadfds)
{
lwp_put_to_user(readfds, kreadfds, sizeof *kreadfds);
}
if (kwritefds)
{
lwp_put_to_user(writefds, kwritefds, sizeof *kwritefds);
}
if (kexceptfds)
{
lwp_put_to_user(exceptfds, kexceptfds, sizeof *kexceptfds);
}
quit:
if (ret < 0)
{
ret = GET_ERRNO();
}
if (kreadfds)
{
kmem_put(kreadfds);
}
if (kwritefds)
{
kmem_put(kwritefds);
}
if (kexceptfds)
{
kmem_put(kexceptfds);
}
return ret;
#else
int ret;
if (!lwp_user_accessable((void *)readfds, sizeof *readfds))
{
return -EFAULT;
}
if (!lwp_user_accessable((void *)writefds, sizeof *writefds))
{
return -EFAULT;
}
if (!lwp_user_accessable((void *)exceptfds, sizeof *exceptfds))
{
return -EFAULT;
}
ret = select(nfds, readfds, writefds, exceptfds, timeout);
return (ret < 0 ? GET_ERRNO() : ret);
#endif
}
sysret_t sys_unlink(const char *pathname)
{
#ifdef ARCH_MM_MMU
int ret = -1;
rt_size_t len = 0;
char *kname = RT_NULL;
len = lwp_user_strlen(pathname);
if (!len)
{
return -EINVAL;
}
kname = (char *)kmem_get(len + 1);
if (!kname)
{
return -ENOMEM;
}
if (lwp_get_from_user(kname, (void *)pathname, len + 1) != (len + 1))
{
kmem_put(kname);
return -EINVAL;
}
ret = unlink(kname);
if (ret < 0)
{
ret = GET_ERRNO();
}
kmem_put(kname);
return ret;
#else
int ret = 0;
ret = unlink(pathname);
return (ret < 0 ? GET_ERRNO() : ret);
#endif
}
/* syscall: "nanosleep" ret: "int" args: "const struct timespec *" "struct timespec *" */
sysret_t sys_nanosleep(const struct timespec *rqtp, struct timespec *rmtp)
{
int ret = 0;
dbg_log(DBG_LOG, "sys_nanosleep\n");
if (!lwp_user_accessable((void *)rqtp, sizeof *rqtp))
return -EFAULT;
#ifdef ARCH_MM_MMU
struct timespec rqtp_k;
struct timespec rmtp_k;
lwp_get_from_user(&rqtp_k, (void *)rqtp, sizeof rqtp_k);
ret = nanosleep(&rqtp_k, &rmtp_k);
if ((ret != -1 || rt_get_errno() == EINTR) && rmtp && lwp_user_accessable((void *)rmtp, sizeof *rmtp))
{
lwp_put_to_user(rmtp, (void *)&rmtp_k, sizeof rmtp_k);
if(ret != 0)
return -EINTR;
}
#else
if (rmtp)
{
if (!lwp_user_accessable((void *)rmtp, sizeof *rmtp))
return -EFAULT;
ret = nanosleep(rqtp, rmtp);
}
#endif
return (ret < 0 ? GET_ERRNO() : ret);
}
/* syscall: "gettimeofday" ret: "int" args: "struct timeval *" "struct timezone *" */
sysret_t sys_gettimeofday(struct timeval *tp, struct timezone *tzp)
{
#ifdef ARCH_MM_MMU
struct timeval t_k;
if (tp)
{
if (!lwp_user_accessable((void *)tp, sizeof *tp))
{
return -EFAULT;
}
t_k.tv_sec = rt_tick_get() / RT_TICK_PER_SECOND;
t_k.tv_usec = (rt_tick_get() % RT_TICK_PER_SECOND) * (1000000 / RT_TICK_PER_SECOND);
lwp_put_to_user(tp, (void *)&t_k, sizeof t_k);
}
#else
if (tp)
{
if (!lwp_user_accessable((void *)tp, sizeof *tp))
{
return -EFAULT;
}
tp->tv_sec = rt_tick_get() / RT_TICK_PER_SECOND;
tp->tv_usec = (rt_tick_get() % RT_TICK_PER_SECOND) * (1000000 / RT_TICK_PER_SECOND);
}
#endif
return 0;
}
sysret_t sys_settimeofday(const struct timeval *tv, const struct timezone *tzp)
{
return 0;
}
sysret_t sys_exec(char *filename, int argc, char **argv, char **envp)
{
int ret = 0;
int len = 0;
char *kfilename = RT_NULL;
len = lwp_user_strlen(filename);
if (len <= 0)
{
return -EFAULT;
}
kfilename = (char *)kmem_get(len + 1);
if (!kfilename)
{
return -ENOMEM;
}
if (lwp_get_from_user(kfilename, (void *)filename, len + 1) != (len + 1))
{
kmem_put(kfilename);
return -EFAULT;
}
ret = lwp_execve(kfilename, 0, argc, argv, envp);
kmem_put(kfilename);
return ret;
}
sysret_t sys_kill(int pid, int signo)
{
rt_err_t kret = 0;
sysret_t sysret;
struct rt_lwp *lwp = RT_NULL;
/* handling the semantics of sys_kill */
if (pid > 0)
{
/**
* Brief: Match the pid and send signal to the lwp if found
* Note: Critical Section
* - pid tree (READ. since the lwp is fetch from the pid tree, it must stay there)
*/
lwp_pid_lock_take();
lwp = lwp_from_pid_raw_locked(pid);
if (lwp)
{
lwp_ref_inc(lwp);
lwp_pid_lock_release();
}
else
{
lwp_pid_lock_release();
kret = -RT_ENOENT;
}
if (lwp)
{
kret = lwp_signal_kill(lwp, signo, SI_USER, 0);
lwp_ref_dec(lwp);
}
}
else if (pid < -1 || pid == 0)
{
pid_t pgid = 0;
rt_processgroup_t group;
if (pid == 0)
{
/**
* sig shall be sent to all processes (excluding an unspecified set
* of system processes) whose process group ID is equal to the process
* group ID of the sender, and for which the process has permission to
* send a signal.
*/
pgid = lwp_pgid_get_byprocess(lwp_self());
}
else
{
/**
* sig shall be sent to all processes (excluding an unspecified set
* of system processes) whose process group ID is equal to the absolute
* value of pid, and for which the process has permission to send a signal.
*/
pgid = -pid;
}
group = lwp_pgrp_find(pgid);
if (group != RT_NULL)
{
PGRP_LOCK(group);
kret = lwp_pgrp_signal_kill(group, signo, SI_USER, 0);
PGRP_UNLOCK(group);
}
else
{
kret = -ECHILD;
}
}
else if (pid == -1)
{
/**
* sig shall be sent to all processes (excluding an unspecified set
* of system processes) for which the process has permission to send
* that signal.
*/
kret = -RT_ENOSYS;
}
switch (kret)
{
case -RT_ENOENT:
sysret = -ESRCH;
break;
case -RT_EINVAL:
sysret = -EINVAL;
break;
case -RT_ENOSYS:
sysret = -ENOSYS;
break;
/**
* kill() never returns ENOMEM, so return normally to caller.
* IEEE Std 1003.1-2017 says the kill() function is successful
* if the process has permission to send sig to any of the
* processes specified by pid.
*/
case -RT_ENOMEM:
default:
sysret = 0;
}
return sysret;
}
sysret_t sys_getpid(void)
{
return lwp_getpid();
}
sysret_t sys_getppid(void)
{
rt_lwp_t process;
process = lwp_self();
if (process->parent == RT_NULL)
{
LOG_E("%s: process %d has no parent process", __func__, lwp_to_pid(process));
return 0;
}
else
{
return lwp_to_pid(process->parent);
}
}
/* syscall: "getpriority" ret: "int" args: "int" "id_t" */
sysret_t sys_getpriority(int which, id_t who)
{
long prio = 0xff;
if (which == PRIO_PROCESS)
{
struct rt_lwp *lwp = RT_NULL;
lwp_pid_lock_take();
lwp = lwp_from_pid_locked(who);
if (lwp)
{
rt_thread_t thread = rt_list_entry(lwp->t_grp.prev, struct rt_thread, sibling);
prio = RT_SCHED_PRIV(thread).current_priority;
}
lwp_pid_lock_release();
}
return prio;
}
/* syscall: "setpriority" ret: "int" args: "int" "id_t" "int" */
sysret_t sys_setpriority(int which, id_t who, int prio)
{
if (which == PRIO_PROCESS)
{
struct rt_lwp *lwp = RT_NULL;
lwp_pid_lock_take();
lwp = lwp_from_pid_locked(who);
if (lwp && prio >= 0 && prio < RT_THREAD_PRIORITY_MAX)
{
rt_list_t *list;
rt_thread_t thread;
for (list = lwp->t_grp.next; list != &lwp->t_grp; list = list->next)
{
thread = rt_list_entry(list, struct rt_thread, sibling);
rt_thread_control(thread, RT_THREAD_CTRL_CHANGE_PRIORITY, &prio);
}
lwp_pid_lock_release();
return 0;
}
else
{
lwp_pid_lock_release();
}
}
return -1;
}
rt_sem_t sys_sem_create(const char *name, rt_uint32_t value, rt_uint8_t flag)
{
int len = 0;
char *kname = RT_NULL;
len = lwp_user_strlen(name);
if (len <= 0)
{
return RT_NULL;
}
kname = (char *)kmem_get(len + 1);
if (!kname)
{
return RT_NULL;
}
if (lwp_get_from_user(kname, (void *)name, len + 1) != (len + 1))
{
kmem_put(kname);
return RT_NULL;
}
rt_sem_t sem = rt_sem_create(kname, value, flag);
if (lwp_user_object_add(lwp_self(), (rt_object_t)sem) != 0)
{
rt_sem_delete(sem);
sem = NULL;
}
kmem_put(kname);
return sem;
}
sysret_t sys_sem_delete(rt_sem_t sem)
{
return lwp_user_object_delete(lwp_self(), (rt_object_t)sem);
}
sysret_t sys_sem_take(rt_sem_t sem, rt_int32_t time)
{
return rt_sem_take_interruptible(sem, time);
}
sysret_t sys_sem_release(rt_sem_t sem)
{
return rt_sem_release(sem);
}
rt_mutex_t sys_mutex_create(const char *name, rt_uint8_t flag)
{
int len = 0;
char *kname = RT_NULL;
rt_mutex_t mutex = RT_NULL;
len = lwp_user_strlen(name);
if (len <= 0)
{
return RT_NULL;
}
kname = (char *)kmem_get(len + 1);
if (!kname)
{
return RT_NULL;
}
if (lwp_get_from_user(kname, (void *)name, len + 1) != (len + 1))
{
kmem_put(kname);
return RT_NULL;
}
mutex = rt_mutex_create(kname, flag);
if(mutex == RT_NULL)
return RT_NULL;
if (lwp_user_object_add(lwp_self(), (rt_object_t)mutex) != 0)
{
rt_mutex_delete(mutex);
mutex = RT_NULL;
}
kmem_put(kname);
return mutex;
}
sysret_t sys_mutex_delete(rt_mutex_t mutex)
{
return lwp_user_object_delete(lwp_self(), (rt_object_t)mutex);
}
sysret_t sys_mutex_take(rt_mutex_t mutex, rt_int32_t time)
{
return rt_mutex_take_interruptible(mutex, time);
}
sysret_t sys_mutex_release(rt_mutex_t mutex)
{
return rt_mutex_release(mutex);
}
#ifdef ARCH_MM_MMU
/* memory allocation */
rt_base_t sys_brk(void *addr)
{
return lwp_brk(addr);
}
void *sys_mmap2(void *addr, size_t length, int prot,
int flags, int fd, size_t pgoffset)
{
sysret_t rc = 0;
long offset = 0;
/* aligned for user addr */
if ((rt_base_t)addr & ARCH_PAGE_MASK)
{
if (flags & MAP_FIXED)
rc = -EINVAL;
else
{
offset = (char *)addr - (char *)RT_ALIGN_DOWN((rt_base_t)addr, ARCH_PAGE_SIZE);
length += offset;
addr = (void *)RT_ALIGN_DOWN((rt_base_t)addr, ARCH_PAGE_SIZE);
}
}
if (rc == 0)
{
/* fix parameter passing (both along have same effect) */
if (fd == -1 || flags & MAP_ANONYMOUS)
{
fd = -1;
/* MAP_SHARED has no effect and treated as nothing */
flags &= ~MAP_SHARED;
flags |= MAP_PRIVATE | MAP_ANONYMOUS;
}
rc = (sysret_t)lwp_mmap2(lwp_self(), addr, length, prot, flags, fd, pgoffset);
}
return rc < 0 ? (char *)rc : (char *)rc + offset;
}
sysret_t sys_munmap(void *addr, size_t length)
{
return lwp_munmap(lwp_self(), addr, length);
}
void *sys_mremap(void *old_address, size_t old_size,
size_t new_size, int flags, void *new_address)
{
return lwp_mremap(lwp_self(), old_address, old_size, new_size, flags, new_address);
}
sysret_t sys_madvise(void *addr, size_t len, int behav)
{
return -ENOSYS;
}
#endif
rt_event_t sys_event_create(const char *name, rt_uint8_t flag)
{
int len = 0;
rt_event_t event = RT_NULL;
char *kname = RT_NULL;
len = lwp_user_strlen(name);
if (len <= 0)
{
return RT_NULL;
}
kname = (char *)kmem_get(len + 1);
if (!kname)
{
return RT_NULL;
}
if (lwp_get_from_user(kname, (void *)name, len + 1) != (len + 1))
{
kmem_put(kname);
return RT_NULL;
}
event = rt_event_create(kname, flag);
if (lwp_user_object_add(lwp_self(), (rt_object_t)event) != 0)
{
rt_event_delete(event);
event = NULL;
}
kmem_put(kname);
return event;
}
sysret_t sys_event_delete(rt_event_t event)
{
return lwp_user_object_delete(lwp_self(), (rt_object_t)event);
}
sysret_t sys_event_send(rt_event_t event, rt_uint32_t set)
{
return rt_event_send(event, set);
}
sysret_t sys_event_recv(rt_event_t event,
rt_uint32_t set,
rt_uint8_t opt,
rt_int32_t timeout,
rt_uint32_t *recved)
{
int ret = 0;
rt_uint32_t krecved;
if ((recved != NULL) && !lwp_user_accessable((void *)recved, sizeof(rt_uint32_t *)))
{
return -EFAULT;
}
ret = rt_event_recv(event, set, opt, timeout, &krecved);
if ((ret == RT_EOK) && recved)
{
lwp_put_to_user((void *)recved, &krecved, sizeof(rt_uint32_t *));
}
return ret;
}
rt_mailbox_t sys_mb_create(const char *name, rt_size_t size, rt_uint8_t flag)
{
int len = 0;
rt_mailbox_t mb = RT_NULL;
char *kname = RT_NULL;
len = lwp_user_strlen(name);
if (len <= 0)
{
return RT_NULL;
}
kname = (char *)kmem_get(len + 1);
if (!kname)
{
return RT_NULL;
}
if (lwp_get_from_user(kname, (void *)name, len + 1) != (len + 1))
{
kmem_put(kname);
return RT_NULL;
}
mb = rt_mb_create(kname, size, flag);
if (lwp_user_object_add(lwp_self(), (rt_object_t)mb) != 0)
{
rt_mb_delete(mb);
mb = NULL;
}
kmem_put(kname);
return mb;
}
sysret_t sys_mb_delete(rt_mailbox_t mb)
{
return lwp_user_object_delete(lwp_self(), (rt_object_t)mb);
}
sysret_t sys_mb_send(rt_mailbox_t mb, rt_ubase_t value)
{
return rt_mb_send(mb, value);
}
sysret_t sys_mb_send_wait(rt_mailbox_t mb,
rt_ubase_t value,
rt_int32_t timeout)
{
return rt_mb_send_wait(mb, value, timeout);
}
sysret_t sys_mb_recv(rt_mailbox_t mb, rt_ubase_t *value, rt_int32_t timeout)
{
int ret = 0;
rt_ubase_t *kvalue;
if (!lwp_user_accessable((void *)value, sizeof(rt_ubase_t *)))
{
return -EFAULT;
}
kvalue = kmem_get(sizeof(rt_ubase_t *));
if (kvalue == RT_NULL)
{
return -ENOMEM;
}
ret = rt_mb_recv(mb, (rt_ubase_t *)kvalue, timeout);
if (ret == RT_EOK)
{
lwp_put_to_user(value, kvalue, sizeof(rt_ubase_t *));
}
kmem_put(kvalue);
return ret;
}
rt_weak int syslog_ctrl(int type, char *buf, int len)
{
return -EINVAL;
}
sysret_t sys_syslog(int type, char *buf, int len)
{
char *tmp;
int ret = -1;
if (!lwp_user_accessable((void *)buf, len))
{
return -EFAULT;
}
tmp = (char *)rt_malloc(len);
if (!tmp)
{
return -ENOMEM;
}
ret = syslog_ctrl(type, tmp, len);
lwp_put_to_user(buf, tmp, len);
rt_free(tmp);
return ret;
}
rt_mq_t sys_mq_create(const char *name,
rt_size_t msg_size,
rt_size_t max_msgs,
rt_uint8_t flag)
{
rt_mq_t mq = RT_NULL;
int len = 0;
char *kname = RT_NULL;
len = lwp_user_strlen(name);
if (len <= 0)
{
return RT_NULL;
}
kname = (char *)kmem_get(len + 1);
if (!kname)
{
return RT_NULL;
}
if (lwp_get_from_user(kname, (void *)name, len + 1) != (len + 1))
{
kmem_put(kname);
return RT_NULL;
}
mq = rt_mq_create(kname, msg_size, max_msgs, flag);
if (lwp_user_object_add(lwp_self(), (rt_object_t)mq) != 0)
{
rt_mq_delete(mq);
mq = NULL;
}
kmem_put(kname);
return mq;
}
sysret_t sys_mq_delete(rt_mq_t mq)
{
return lwp_user_object_delete(lwp_self(), (rt_object_t)mq);
}
sysret_t sys_mq_send(rt_mq_t mq, void *buffer, rt_size_t size)
{
int ret = 0;
void *kbuffer = RT_NULL;
if (!lwp_user_accessable((void *)buffer, size))
{
return -EFAULT;
}
kbuffer = kmem_get(size);
if (kbuffer == RT_NULL)
{
return -ENOMEM;
}
if (lwp_get_from_user(kbuffer, buffer, size) != size)
{
kmem_put(kbuffer);
return -EINVAL;
}
ret = rt_mq_send(mq, kbuffer, size);
kmem_put(kbuffer);
return ret;
}
sysret_t sys_mq_urgent(rt_mq_t mq, void *buffer, rt_size_t size)
{
int ret = 0;
void *kbuffer = RT_NULL;
if (!lwp_user_accessable((void *)buffer, size))
{
return -EFAULT;
}
kbuffer = kmem_get(size);
if (kbuffer == RT_NULL)
{
return -ENOMEM;
}
if (lwp_get_from_user(kbuffer, buffer, size) != size)
{
kmem_put(kbuffer);
return -EINVAL;
}
ret = rt_mq_urgent(mq, kbuffer, size);
kmem_put(kbuffer);
return ret;
}
sysret_t sys_mq_recv(rt_mq_t mq,
void *buffer,
rt_size_t size,
rt_int32_t timeout)
{
int ret = 0;
void *kbuffer = RT_NULL;
if (!lwp_user_accessable((void *)buffer, size))
{
return -EFAULT;
}
kbuffer = kmem_get(size);
if (kbuffer == RT_NULL)
{
return -ENOMEM;
}
ret = rt_mq_recv(mq, kbuffer, size, timeout);
if (ret > 0)
lwp_put_to_user((void *)buffer, (void *)kbuffer, ret);
kmem_put(kbuffer);
return ret;
}
static void timer_timeout_callback(void *parameter)
{
rt_sem_t sem = (rt_sem_t)parameter;
rt_sem_release(sem);
}
rt_timer_t sys_rt_timer_create(const char *name,
void *data,
rt_tick_t time,
rt_uint8_t flag)
{
int len = 0;
char *kname = RT_NULL;
rt_timer_t timer = RT_NULL;
len = lwp_user_strlen(name);
if (len <= 0)
{
return RT_NULL;
}
kname = (char *)kmem_get(len + 1);
if (!kname)
{
return RT_NULL;
}
if (lwp_get_from_user(kname, (void *)name, len + 1) != (len + 1))
{
kmem_put(kname);
return RT_NULL;
}
timer = rt_timer_create(kname, timer_timeout_callback, (void *)data, time, flag);
if (lwp_user_object_add(lwp_self(), (rt_object_t)timer) != 0)
{
rt_timer_delete(timer);
timer = NULL;
}
kmem_put(kname);
return timer;
}
sysret_t sys_rt_timer_delete(rt_timer_t timer)
{
return lwp_user_object_delete(lwp_self(), (rt_object_t)timer);
}
sysret_t sys_rt_timer_start(rt_timer_t timer)
{
return rt_timer_start(timer);
}
sysret_t sys_rt_timer_stop(rt_timer_t timer)
{
return rt_timer_stop(timer);
}
sysret_t sys_rt_timer_control(rt_timer_t timer, int cmd, void *arg)
{
return rt_timer_control(timer, cmd, arg);
}
/* MUSL compatible */
struct ksigevent
{
union sigval sigev_value;
int sigev_signo;
int sigev_notify;
int sigev_tid;
};
/* to protect unsafe implementation in current rt-smart toolchain */
RT_STATIC_ASSERT(sigevent_compatible, offsetof(struct ksigevent, sigev_tid) == offsetof(struct sigevent, sigev_notify_function));
sysret_t sys_timer_create(clockid_t clockid, struct sigevent *restrict sevp, timer_t *restrict timerid)
{
int ret = 0;
#ifdef ARCH_MM_MMU
struct sigevent sevp_k;
timer_t timerid_k;
int utimer;
if (sevp == NULL)
{
sevp_k.sigev_notify = SIGEV_SIGNAL;
sevp_k.sigev_signo = SIGALRM;
sevp = &sevp_k;
}
else
{
/* clear extra bytes if any */
if (sizeof(struct ksigevent) < sizeof(struct sigevent))
memset(&sevp_k, 0, sizeof(sevp_k));
/* musl passes `struct ksigevent` to kernel, we shoule only get size of that bytes */
if (!lwp_get_from_user(&sevp_k, (void *)sevp, sizeof(struct ksigevent)))
{
return -EINVAL;
}
}
ret = _SYS_WRAP(timer_create(clockid, &sevp_k, &timerid_k));
if (ret != -RT_ERROR)
{
utimer = (rt_ubase_t)timerid_k;
if (!lwp_put_to_user(sevp, (void *)&sevp_k, sizeof(struct ksigevent)) ||
!lwp_put_to_user(timerid, (void *)&utimer, sizeof(utimer)))
ret = -EINVAL;
}
#else
ret = _SYS_WRAP(timer_create(clockid, sevp, timerid));
#endif
return ret;
}
sysret_t sys_timer_delete(timer_t timerid)
{
int ret = timer_delete(timerid);
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_timer_settime(timer_t timerid, int flags,
const struct itimerspec *restrict new_value,
struct itimerspec *restrict old_value)
{
int ret = 0;
#ifdef ARCH_MM_MMU
struct itimerspec new_value_k;
struct itimerspec old_value_k;
if (!lwp_get_from_user(&new_value_k, (void *)new_value, sizeof(*new_value)) ||
(old_value && !lwp_get_from_user(&old_value_k, (void *)old_value, sizeof(*old_value))))
{
return -EFAULT;
}
ret = timer_settime(timerid, flags, &new_value_k, &old_value_k);
lwp_put_to_user(old_value, (void *)&old_value_k, sizeof old_value_k);
#else
ret = timer_settime(timerid, flags, new_value, old_value);
#endif
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_timer_gettime(timer_t timerid, struct itimerspec *curr_value)
{
int ret = 0;
#ifdef ARCH_MM_MMU
struct itimerspec curr_value_k;
lwp_get_from_user(&curr_value_k, (void *)curr_value, sizeof curr_value_k);
ret = timer_gettime(timerid, &curr_value_k);
lwp_put_to_user(curr_value, (void *)&curr_value_k, sizeof curr_value_k);
#else
ret = timer_gettime(timerid, curr_value);
#endif
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_timer_getoverrun(timer_t timerid)
{
int ret = 0;
ret = timer_getoverrun(timerid);
return (ret < 0 ? GET_ERRNO() : ret);
}
rt_thread_t sys_thread_create(void *arg[])
{
void *user_stack = 0;
struct rt_lwp *lwp = 0;
rt_thread_t thread = RT_NULL;
int tid = 0;
lwp = rt_thread_self()->lwp;
lwp_ref_inc(lwp);
#ifdef ARCH_MM_MMU
user_stack = lwp_map_user(lwp, 0, (size_t)arg[3], 0);
if (!user_stack)
{
goto fail;
}
if ((tid = lwp_tid_get()) == 0)
{
goto fail;
}
thread = rt_thread_create((const char *)arg[0],
_crt_thread_entry,
(void *)arg[2],
ALLOC_KERNEL_STACK_SIZE,
(rt_uint8_t)(size_t)arg[4],
(rt_uint32_t)(rt_size_t)arg[5]);
if (!thread)
{
goto fail;
}
#ifdef RT_USING_SMP
RT_SCHED_CTX(thread).bind_cpu = lwp->bind_cpu;
#endif
thread->cleanup = lwp_cleanup;
thread->user_entry = (void (*)(void *))arg[1];
thread->user_stack = (void *)user_stack;
thread->user_stack_size = (rt_size_t)arg[3];
#else
rt_uint32_t kstack_size = (rt_uint32_t)arg[7];
if (kstack_size < ALLOC_KERNEL_STACK_SIZE_MIN)
{
/* When kstack size is 0, the default size of the kernel stack is used */
kstack_size = kstack_size ? ALLOC_KERNEL_STACK_SIZE_MIN : ALLOC_KERNEL_STACK_SIZE;
}
else if (kstack_size > ALLOC_KERNEL_STACK_SIZE_MAX)
{
kstack_size = ALLOC_KERNEL_STACK_SIZE_MAX;
}
user_stack = (void *)arg[3];
if ((!user_stack) || ((rt_uint32_t)arg[6] == RT_NULL))
{
goto fail;
}
if ((tid = lwp_tid_get()) == 0)
{
goto fail;
}
thread = rt_thread_create((const char *)arg[0], _crt_thread_entry, (void *)arg[2], kstack_size, (rt_uint8_t)(size_t)arg[5], (rt_uint32_t)arg[6]);
if (!thread)
{
goto fail;
}
thread->cleanup = lwp_cleanup;
thread->user_entry = (void (*)(void *))arg[1];
thread->user_stack = (void *)user_stack;
thread->user_stack_size = (uint32_t)arg[4];
rt_memset(thread->user_stack, '#', thread->user_stack_size);
#endif /* ARCH_MM_MMU */
thread->lwp = (void*)lwp;
thread->tid = tid;
lwp_tid_set_thread(tid, thread);
if (lwp->debug)
{
rt_thread_control(thread, RT_THREAD_CTRL_BIND_CPU, (void*)0);
}
LWP_LOCK(lwp);
rt_list_insert_after(&lwp->t_grp, &thread->sibling);
LWP_UNLOCK(lwp);
return thread;
fail:
lwp_tid_put(tid);
if (lwp)
{
lwp_ref_dec(lwp);
}
return RT_NULL;
}
#ifdef ARCH_MM_MMU
long _sys_clone(void *arg[])
{
struct rt_lwp *lwp = 0;
rt_thread_t thread = RT_NULL;
rt_thread_t self = RT_NULL;
int tid = 0;
rt_err_t err;
unsigned long flags = 0;
void *user_stack = RT_NULL;
int *new_tid = RT_NULL;
void *tls = RT_NULL;
/*
musl call flags (CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND
| CLONE_THREAD | CLONE_SYSVSEM | CLONE_SETTLS
| CLONE_PARENT_SETTID | CLONE_CHILD_CLEARTID | CLONE_DETACHED);
*/
/* check args */
if (!lwp_user_accessable(arg, sizeof(void *[SYS_CLONE_ARGS_NR])))
{
return -EFAULT;
}
flags = (unsigned long)(size_t)arg[0];
if ((flags & (CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_THREAD | CLONE_SYSVSEM))
!= (CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_THREAD | CLONE_SYSVSEM))
{
return -EINVAL;
}
user_stack = arg[1];
new_tid = (int *)arg[2];
tls = (void *)arg[3];
if ((flags & CLONE_PARENT_SETTID) == CLONE_PARENT_SETTID)
{
if (!lwp_user_accessable(new_tid, sizeof(int)))
{
return -EFAULT;
}
}
self = rt_thread_self();
lwp = self->lwp;
lwp_ref_inc(lwp);
if (!user_stack)
{
SET_ERRNO(EINVAL);
goto fail;
}
if ((tid = lwp_tid_get()) == 0)
{
SET_ERRNO(ENOMEM);
goto fail;
}
thread = rt_thread_create(self->parent.name,
RT_NULL,
RT_NULL,
self->stack_size,
RT_SCHED_PRIV(self).init_priority,
RT_SCHED_PRIV(self).init_tick);
if (!thread)
{
goto fail;
}
#ifdef RT_USING_SMP
RT_SCHED_CTX(self).bind_cpu = lwp->bind_cpu;
#endif
thread->cleanup = lwp_cleanup;
thread->user_entry = RT_NULL;
thread->user_stack = RT_NULL;
thread->user_stack_size = 0;
thread->lwp = (void *)lwp;
thread->tid = tid;
if ((flags & CLONE_SETTLS) == CLONE_SETTLS)
{
thread->thread_idr = tls;
}
if ((flags & CLONE_PARENT_SETTID) == CLONE_PARENT_SETTID)
{
*new_tid = (int)(tid);
}
if ((flags & CLONE_CHILD_CLEARTID) == CLONE_CHILD_CLEARTID)
{
thread->clear_child_tid = (int *)arg[4];
}
if (lwp->debug)
{
rt_thread_control(thread, RT_THREAD_CTRL_BIND_CPU, (void*)0);
}
LWP_LOCK(lwp);
rt_list_insert_after(&lwp->t_grp, &thread->sibling);
LWP_UNLOCK(lwp);
/* copy origin stack */
lwp_memcpy(thread->stack_addr, self->stack_addr, thread->stack_size);
lwp_tid_set_thread(tid, thread);
arch_set_thread_context(arch_clone_exit,
(void *)((char *)thread->stack_addr + thread->stack_size),
user_stack, &thread->sp);
/* new thread never reach there */
rt_thread_startup(thread);
return (long)tid;
fail:
err = GET_ERRNO();
RT_ASSERT(err < 0);
lwp_tid_put(tid);
if (thread)
{
rt_thread_delete(thread);
}
if (lwp)
{
lwp_ref_dec(lwp);
}
return (long)err;
}
rt_weak long sys_clone(void *arg[])
{
return _sys_clone(arg);
}
static void lwp_struct_copy(struct rt_lwp *dst, struct rt_lwp *src)
{
#ifdef ARCH_MM_MMU
dst->end_heap = src->end_heap;
#endif
dst->lwp_type = src->lwp_type;
dst->text_entry = src->text_entry;
dst->text_size = src->text_size;
dst->data_entry = src->data_entry;
dst->data_size = src->data_size;
dst->args = src->args;
dst->background = src->background;
dst->tty = src->tty;
/* terminal API */
dst->term_ctrlterm = src->term_ctrlterm;
rt_memcpy(dst->cmd, src->cmd, RT_NAME_MAX);
if (src->exe_file)
{
if (dst->exe_file)
{
rt_free(dst->exe_file);
}
dst->exe_file = strndup(src->exe_file, DFS_PATH_MAX);
}
rt_memcpy(&dst->signal.sig_action, &src->signal.sig_action, sizeof(dst->signal.sig_action));
rt_memcpy(&dst->signal.sig_action_mask, &src->signal.sig_action_mask, sizeof(dst->signal.sig_action_mask));
rt_memcpy(&dst->signal.sig_action_nodefer, &src->signal.sig_action_nodefer, sizeof(dst->signal.sig_action_nodefer));
rt_memcpy(&dst->signal.sig_action_onstack, &src->signal.sig_action_onstack, sizeof(dst->signal.sig_action_onstack));
rt_memcpy(&dst->signal.sig_action_restart, &dst->signal.sig_action_restart, sizeof(dst->signal.sig_action_restart));
rt_memcpy(&dst->signal.sig_action_siginfo, &dst->signal.sig_action_siginfo, sizeof(dst->signal.sig_action_siginfo));
rt_memcpy(&dst->signal.sig_action_nocldstop, &dst->signal.sig_action_nocldstop, sizeof(dst->signal.sig_action_nocldstop));
rt_memcpy(&dst->signal.sig_action_nocldwait, &dst->signal.sig_action_nocldwait, sizeof(dst->signal.sig_action_nocldwait));
rt_strcpy(dst->working_directory, src->working_directory);
}
static int lwp_copy_files(struct rt_lwp *dst, struct rt_lwp *src)
{
struct dfs_fdtable *dst_fdt;
struct dfs_fdtable *src_fdt;
src_fdt = &src->fdt;
dst_fdt = &dst->fdt;
/* init fds */
dst_fdt->fds = rt_calloc(src_fdt->maxfd, sizeof(void *));
if (dst_fdt->fds)
{
struct dfs_file *d_s;
int i;
dst_fdt->maxfd = src_fdt->maxfd;
dfs_file_lock();
/* dup files */
for (i = 0; i < src_fdt->maxfd; i++)
{
d_s = fdt_get_file(src_fdt, i);
if (d_s)
{
dst_fdt->fds[i] = d_s;
d_s->ref_count++;
}
}
dfs_file_unlock();
return 0;
}
return -RT_ERROR;
}
sysret_t _sys_fork(void)
{
int tid = 0;
sysret_t falival = 0;
struct rt_lwp *lwp = RT_NULL;
struct rt_lwp *self_lwp = RT_NULL;
rt_thread_t thread = RT_NULL;
rt_thread_t self_thread = RT_NULL;
void *user_stack = RT_NULL;
rt_processgroup_t group;
/* new lwp */
lwp = lwp_create(LWP_CREATE_FLAG_ALLOC_PID);
if (!lwp)
{
SET_ERRNO(ENOMEM);
goto fail;
}
/* new tid */
if ((tid = lwp_tid_get()) == 0)
{
SET_ERRNO(ENOMEM);
goto fail;
}
/* user space init */
if (lwp_user_space_init(lwp, 1) != 0)
{
SET_ERRNO(ENOMEM);
goto fail;
}
self_lwp = lwp_self();
/* copy address space of process from this proc to forked one */
if (lwp_fork_aspace(lwp, self_lwp) != 0)
{
SET_ERRNO(ENOMEM);
goto fail;
}
/* copy lwp struct data */
lwp_struct_copy(lwp, self_lwp);
/* copy files */
if (lwp_copy_files(lwp, self_lwp) != 0)
{
SET_ERRNO(ENOMEM);
goto fail;
}
/* create thread */
self_thread = rt_thread_self();
thread = rt_thread_create(self_thread->parent.name,
RT_NULL,
RT_NULL,
self_thread->stack_size,
RT_SCHED_PRIV(self_thread).init_priority,
RT_SCHED_PRIV(self_thread).init_tick);
if (!thread)
{
SET_ERRNO(ENOMEM);
goto fail;
}
thread->cleanup = self_thread->cleanup;
thread->user_entry = self_thread->user_entry;
thread->user_stack = self_thread->user_stack;
thread->user_stack_size = self_thread->user_stack_size;
thread->signal.sigset_mask = self_thread->signal.sigset_mask;
thread->thread_idr = self_thread->thread_idr;
thread->clear_child_tid = self_thread->clear_child_tid;
thread->lwp = (void *)lwp;
thread->tid = tid;
LWP_LOCK(self_lwp);
/* add thread to lwp process */
rt_list_insert_after(&lwp->t_grp, &thread->sibling);
LWP_UNLOCK(self_lwp);
lwp_children_register(self_lwp, lwp);
/* set pgid and sid */
group = lwp_pgrp_find(lwp_pgid_get_byprocess(self_lwp));
if (group)
{
lwp_pgrp_insert(group, lwp);
}
else
{
LOG_W("the process group of pid: %d cannot be found", lwp_pgid_get_byprocess(self_lwp));
}
/* copy kernel stack context from self thread */
lwp_memcpy(thread->stack_addr, self_thread->stack_addr, self_thread->stack_size);
lwp_tid_set_thread(tid, thread);
/* duplicate user objects */
lwp_user_object_dup(lwp, self_lwp);
user_stack = arch_get_user_sp();
arch_set_thread_context(arch_fork_exit,
(void *)((char *)thread->stack_addr + thread->stack_size),
user_stack, &thread->sp);
rt_thread_startup(thread);
return lwp_to_pid(lwp);
fail:
falival = GET_ERRNO();
if (tid != 0)
{
lwp_tid_put(tid);
}
if (thread)
{
rt_thread_delete(thread);
}
if (lwp)
{
lwp_ref_dec(lwp);
}
return falival;
}
/* arm needs to wrap fork/clone call to preserved lr & caller saved regs */
rt_weak sysret_t sys_fork(void)
{
return _sys_fork();
}
rt_weak sysret_t sys_vfork(void)
{
return sys_fork();
}
#define _swap_lwp_data(lwp_used, lwp_new, type, member) \
do {\
type tmp;\
tmp = lwp_used->member;\
lwp_used->member = lwp_new->member;\
lwp_new->member = tmp;\
} while (0)
sysret_t sys_execve(const char *path, char *const argv[], char *const envp[])
{
rt_err_t error = -1;
size_t len;
struct rt_lwp *new_lwp = NULL;
struct rt_lwp *lwp;
int uni_thread;
rt_thread_t thread;
struct process_aux *aux;
struct lwp_args_info args_info;
char *kpath = RT_NULL;
lwp = lwp_self();
thread = rt_thread_self();
uni_thread = 1;
LWP_LOCK(lwp);
if (lwp->t_grp.prev != &thread->sibling)
{
uni_thread = 0;
}
if (lwp->t_grp.next != &thread->sibling)
{
uni_thread = 0;
}
LWP_UNLOCK(lwp);
if (!uni_thread)
{
return -EINVAL;
}
len = lwp_user_strlen(path);
if (len <= 0)
{
return -EFAULT;
}
kpath = rt_malloc(len + 1);
if (!kpath)
{
return -ENOMEM;
}
if (lwp_get_from_user(kpath, (void *)path, len) != len)
{
rt_free(kpath);
return -EFAULT;
}
kpath[len] = '\0';
if (access(kpath, X_OK) != 0)
{
error = rt_get_errno();
rt_free(kpath);
return (sysret_t)error;
}
/* setup args */
error = lwp_args_init(&args_info);
if (error)
{
rt_free(kpath);
return -ENOMEM;
}
if (argv)
{
error = lwp_args_put_argv(&args_info, (void *)argv);
if (error)
{
error = -EFAULT;
goto quit;
}
}
if (envp)
{
error = lwp_args_put_envp(&args_info, (void *)envp);
if (error)
{
error = -EFAULT;
goto quit;
}
}
/* alloc new lwp to operation */
new_lwp = lwp_create(LWP_CREATE_FLAG_NONE);
if (!new_lwp)
{
error = -ENOMEM;
goto quit;
}
error = lwp_user_space_init(new_lwp, 0);
if (error != 0)
{
error = -ENOMEM;
goto quit;
}
/* file is a script ? */
path = kpath;
while (1)
{
error = lwp_args_load_script(&args_info, path);
if (error != 0)
{
break;
}
path = lwp_args_get_argv_0(&args_info);
}
/* now load elf */
if ((aux = lwp_argscopy(new_lwp, &args_info)) == NULL)
{
error = -ENOMEM;
goto quit;
}
error = lwp_load(path, new_lwp, RT_NULL, 0, aux);
if (error == RT_EOK)
{
int off = 0;
int last_backslash = 0;
/* clear all user objects */
lwp_user_object_clear(lwp);
/* find last \ or / to get base name */
while (1)
{
char c = path[off++];
if (c == '\0')
{
break;
}
if (c == '\\' || c == '/')
{
last_backslash = off;
}
}
/**
* Set thread name and swap the data of lwp and new_lwp.
* Since no other threads can access the lwp field, it't uneccessary to
* take a lock here
*/
RT_ASSERT(rt_list_entry(lwp->t_grp.prev, struct rt_thread, sibling) == thread);
strncpy(thread->parent.name, path + last_backslash, RT_NAME_MAX - 1);
strncpy(lwp->cmd, new_lwp->cmd, RT_NAME_MAX);
rt_free(lwp->exe_file);
lwp->exe_file = strndup(new_lwp->exe_file, DFS_PATH_MAX);
#ifdef ARCH_MM_MMU
_swap_lwp_data(lwp, new_lwp, struct rt_aspace *, aspace);
_swap_lwp_data(lwp, new_lwp, size_t, end_heap);
#endif
_swap_lwp_data(lwp, new_lwp, uint8_t, lwp_type);
_swap_lwp_data(lwp, new_lwp, void *, text_entry);
_swap_lwp_data(lwp, new_lwp, uint32_t, text_size);
_swap_lwp_data(lwp, new_lwp, void *, data_entry);
_swap_lwp_data(lwp, new_lwp, uint32_t, data_size);
_swap_lwp_data(lwp, new_lwp, void *, args);
lwp_thread_signal_detach(&thread->signal);
rt_memset(&thread->signal.sigset_mask, 0, sizeof(thread->signal.sigset_mask));
lwp_signal_detach(&lwp->signal);
lwp_signal_init(&lwp->signal);
/* to do: clsoe files with flag CLOEXEC, recy sub-thread */
lwp_aspace_switch(thread);
lwp_ref_dec(new_lwp);
arch_start_umode(lwp->args,
lwp->text_entry,
(void*)USER_STACK_VEND,
(char *)thread->stack_addr + thread->stack_size);
/* never reach here */
}
error = -EINVAL;
quit:
if (kpath)
{
rt_free(kpath);
}
lwp_args_detach(&args_info);
if (new_lwp)
{
lwp_ref_dec(new_lwp);
}
return error;
}
#endif /* ARCH_MM_MMU */
sysret_t sys_thread_delete(rt_thread_t thread)
{
#ifdef ARCH_MM_MMU
return rt_thread_delete(thread);
#else
sysret_t ret = 0;
if(thread->parent.type != RT_Object_Class_Thread)
{
ret = -EINVAL;
goto __exit;
}
ret = rt_thread_delete(thread);
if (rt_thread_self() == thread)
{
rt_schedule();
}
__exit:
return ret;
#endif
}
sysret_t sys_thread_startup(rt_thread_t thread)
{
return rt_thread_startup(thread);
}
rt_thread_t sys_thread_self(void)
{
return rt_thread_self();
}
/* sys channel */
sysret_t sys_channel_open(const char *name, int flags)
{
rt_size_t ret = 0;
char *kname = RT_NULL;
int len = 0;
len = lwp_user_strlen(name);
if (len <= 0)
{
return -EFAULT;
}
kname = (char *)kmem_get(len + 1);
if (!kname)
{
return -ENOMEM;
}
if (lwp_get_from_user(kname, (void *)name, len + 1) != (len + 1))
{
kmem_put(kname);
return -EFAULT;
}
ret = lwp_channel_open(FDT_TYPE_LWP, kname, flags);
kmem_put(kname);
return ret;
}
sysret_t sys_channel_close(int fd)
{
return lwp_channel_close(FDT_TYPE_LWP, fd);
}
sysret_t sys_channel_send(int fd, rt_channel_msg_t data)
{
rt_size_t ret = 0;
rt_channel_msg_t kdata = RT_NULL;
if (!lwp_user_accessable((void *)data, sizeof(*data)))
{
return -EFAULT;
}
kdata = kmem_get(sizeof(*data));
if (kdata == RT_NULL)
return -ENOMEM;
if (lwp_get_from_user(kdata, data, sizeof(*kdata)) != sizeof(*kdata))
{
kmem_put(kdata);
return -EFAULT;
}
ret = lwp_channel_send(FDT_TYPE_LWP, fd, kdata);
kmem_put(kdata);
return ret;
}
sysret_t sys_channel_send_recv_timeout(int fd, rt_channel_msg_t data, rt_channel_msg_t data_ret, rt_int32_t time)
{
rt_size_t ret = 0;
rt_channel_msg_t kdata = RT_NULL;
rt_channel_msg_t kdata_ret = RT_NULL;
if (!lwp_user_accessable((void *)data, sizeof(*data)))
{
return -EFAULT;
}
kdata = kmem_get(sizeof(*data));
if (kdata == RT_NULL)
return -ENOMEM;
if (lwp_get_from_user(kdata, data, sizeof(*kdata)) != sizeof(*kdata))
{
kmem_put(kdata);
return -EFAULT;
}
kdata_ret = kmem_get(sizeof(*data_ret));
if (kdata_ret == RT_NULL)
return -ENOMEM;
ret = lwp_channel_send_recv_timeout(FDT_TYPE_LWP, fd, kdata, kdata_ret, time);
lwp_put_to_user(data_ret, kdata_ret, sizeof(*kdata_ret));
kmem_put(kdata);
kmem_put(kdata_ret);
return ret;
}
sysret_t sys_channel_reply(int fd, rt_channel_msg_t data)
{
rt_size_t ret = 0;
rt_channel_msg_t kdata = RT_NULL;
if (!lwp_user_accessable((void *)data, sizeof(*data)))
{
return -EFAULT;
}
kdata = kmem_get(sizeof(*data));
if (kdata == RT_NULL)
return -ENOMEM;
if (lwp_get_from_user(kdata, data, sizeof(*kdata)) != sizeof(*data))
{
kmem_put(kdata);
return -EFAULT;
}
ret = lwp_channel_reply(FDT_TYPE_LWP, fd, kdata);
kmem_put(kdata);
return ret;
}
sysret_t sys_channel_recv_timeout(int fd, rt_channel_msg_t data, rt_int32_t time)
{
rt_size_t ret = 0;
rt_channel_msg_t kdata = RT_NULL;
kdata = kmem_get(sizeof(*data));
if (kdata == RT_NULL)
return -ENOMEM;
ret = lwp_channel_recv_timeout(FDT_TYPE_LWP, fd, kdata, time);
lwp_put_to_user(data, kdata, sizeof(*kdata));
kmem_put(kdata);
return ret;
}
static struct rt_semaphore critical_lock;
static int critical_init(void)
{
rt_sem_init(&critical_lock, "ct_lock", 1, RT_IPC_FLAG_FIFO);
return 0;
}
INIT_DEVICE_EXPORT(critical_init);
void sys_enter_critical(void)
{
rt_sem_take(&critical_lock, RT_WAITING_FOREVER);
}
void sys_exit_critical(void)
{
rt_sem_release(&critical_lock);
}
/* syscall: "sys_log" ret: "int" args: "const char*" "size" */
static int __sys_log_enable = 0;
static int sys_log_enable(int argc, char** argv)
{
if (argc == 1)
{
rt_kprintf("sys_log = %d\n", __sys_log_enable);
return 0;
}
else
{
__sys_log_enable = atoi(argv[1]);
}
return 0;
}
MSH_CMD_EXPORT_ALIAS(sys_log_enable, sys_log, sys_log 1(enable)/0(disable));
sysret_t sys_log(const char* log, int size)
{
char *klog = RT_NULL;
rt_device_t console = RT_NULL;
if (!lwp_user_accessable((void *)log, size))
return -EFAULT;
klog = kmem_get(size);
if (klog == RT_NULL)
{
return -ENOMEM;
}
if (lwp_get_from_user((void *)klog, (void *)log, size) != size)
{
kmem_put(klog);
return -EINVAL;
}
console = rt_console_get_device();
if (console && __sys_log_enable)
{
rt_device_write(console, -1, klog, size);
}
kmem_put(klog);
return 0;
}
sysret_t sys_stat(const char *file, struct stat *buf)
{
int ret = 0;
size_t len;
size_t copy_len;
char *copy_path;
struct stat statbuff = {0};
if (!lwp_user_accessable((void *)buf, sizeof(struct stat)))
{
return -EFAULT;
}
len = lwp_user_strlen(file);
if (len <= 0)
{
return -EFAULT;
}
copy_path = (char*)rt_malloc(len + 1);
if (!copy_path)
{
return -ENOMEM;
}
copy_len = lwp_get_from_user(copy_path, (void*)file, len);
if (copy_len == 0)
{
rt_free(copy_path);
return -EFAULT;
}
copy_path[copy_len] = '\0';
ret = _SYS_WRAP(stat(copy_path, &statbuff));
rt_free(copy_path);
if (ret == 0)
{
lwp_put_to_user(buf, &statbuff, sizeof statbuff);
}
return ret;
}
sysret_t sys_lstat(const char *file, struct stat *buf)
{
int ret = 0;
size_t len;
size_t copy_len;
char *copy_path;
struct stat statbuff = {0};
if (!lwp_user_accessable((void *)buf, sizeof(struct stat)))
{
return -EFAULT;
}
len = lwp_user_strlen(file);
if (len <= 0)
{
return -EFAULT;
}
copy_path = (char*)rt_malloc(len + 1);
if (!copy_path)
{
return -ENOMEM;
}
copy_len = lwp_get_from_user(copy_path, (void*)file, len);
if (copy_len == 0)
{
rt_free(copy_path);
return -EFAULT;
}
copy_path[copy_len] = '\0';
#ifdef RT_USING_DFS_V2
ret = _SYS_WRAP(dfs_file_lstat(copy_path, &statbuff));
#else
ret = _SYS_WRAP(stat(copy_path, &statbuff));
#endif
rt_free(copy_path);
if (ret == 0)
{
lwp_put_to_user(buf, &statbuff, sizeof statbuff);
}
return ret;
}
sysret_t sys_notimpl(void)
{
return -ENOSYS;
}
uint32_t sys_hw_interrupt_disable(void)
{
return rt_hw_interrupt_disable();
}
void sys_hw_interrupt_enable(uint32_t level)
{
rt_hw_interrupt_enable(level);
}
#ifdef ARCH_MM_MMU
sysret_t sys_shmget(size_t key, size_t size, int create)
{
return lwp_shmget(key, size, create);
}
sysret_t sys_shmrm(int id)
{
return lwp_shmrm(id);
}
void* sys_shmat(int id, void* shm_vaddr)
{
return lwp_shmat(id, shm_vaddr);
}
sysret_t sys_shmdt(void* shm_vaddr)
{
return lwp_shmdt(shm_vaddr);
}
#elif defined RT_LWP_USING_SHM
void *sys_shm_alloc(int size)
{
if (size < 0)
{
return RT_NULL;
}
return lwp_shm_alloc((rt_size_t)size);
}
void *sys_shm_retain(void *mem)
{
if (!lwp_user_accessable(mem, sizeof (void *)))
{
return RT_NULL;
}
return lwp_shm_retain(mem);
}
sysret_t sys_shm_free(void *mem)
{
if (!lwp_user_accessable(mem, sizeof (void *)))
{
return -EFAULT;
}
lwp_shm_free(mem);
return 0;
}
#endif
/* device interfaces */
sysret_t sys_device_init(rt_device_t dev)
{
return rt_device_init(dev);
}
sysret_t sys_device_register(rt_device_t dev, const char *name, rt_uint16_t flags)
{
return rt_device_register(dev, name, flags);
}
sysret_t sys_device_control(rt_device_t dev, int cmd, void *arg)
{
return rt_device_control(dev, cmd, arg);
}
rt_device_t sys_device_find(const char* name)
{
return rt_device_find(name);
}
sysret_t sys_device_open(rt_device_t dev, rt_uint16_t oflag)
{
return rt_device_open(dev, oflag);
}
sysret_t sys_device_close(rt_device_t dev)
{
return rt_device_close(dev);
}
rt_ssize_t sys_device_read(rt_device_t dev, rt_off_t pos, void *buffer, rt_size_t size)
{
return rt_device_read(dev, pos, buffer, size);
}
rt_ssize_t sys_device_write(rt_device_t dev, rt_off_t pos, const void *buffer, rt_size_t size)
{
return rt_device_write(dev, pos, buffer, size);
}
#ifdef RT_USING_SAL
/* network interfaces */
sysret_t sys_accept(int socket, struct musl_sockaddr *addr, socklen_t *addrlen)
{
int ret = -1;
struct sockaddr ksa;
struct musl_sockaddr kmusladdr;
socklen_t uaddrlen;
socklen_t kaddrlen;
if (addr)
{
if (!lwp_user_accessable(addrlen, sizeof(socklen_t)))
{
return -EFAULT;
}
lwp_get_from_user(&uaddrlen, addrlen, sizeof(socklen_t));
if (!uaddrlen)
{
return -EINVAL;
}
if (!lwp_user_accessable(addr, uaddrlen))
{
return -EFAULT;
}
}
kaddrlen = sizeof(struct sockaddr);
ret = accept(socket, &ksa, &kaddrlen);
if (ret >= 0)
{
if (addr)
{
sockaddr_tomusl(&ksa, &kmusladdr);
if (uaddrlen > sizeof(struct musl_sockaddr))
{
uaddrlen = sizeof(struct musl_sockaddr);
}
lwp_put_to_user(addr, &kmusladdr, uaddrlen);
lwp_put_to_user(addrlen, &uaddrlen, sizeof(socklen_t));
}
}
return ret;
}
sysret_t sys_bind(int socket, const struct musl_sockaddr *name, socklen_t namelen)
{
rt_err_t ret = 0;
struct sockaddr sa;
struct sockaddr_un un_addr;
struct musl_sockaddr kname;
rt_uint16_t family = 0;
if (!lwp_user_accessable((void *)name, namelen))
{
return -EFAULT;
}
lwp_get_from_user(&family, (void *)name, 2);
if (family == AF_UNIX)
{
lwp_get_from_user(&un_addr, (void *)name, sizeof(struct sockaddr_un));
ret = bind(socket, (struct sockaddr *)&un_addr, namelen);
}
else if (family == AF_NETLINK)
{
lwp_get_from_user(&sa, (void *)name, namelen);
ret = bind(socket, &sa, namelen);
}
else
{
lwp_get_from_user(&kname, (void *)name, namelen);
sockaddr_tolwip(&kname, &sa);
ret = bind(socket, &sa, namelen);
}
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_shutdown(int socket, int how)
{
return shutdown(socket, how);
}
sysret_t sys_getpeername(int socket, struct musl_sockaddr *name, socklen_t *namelen)
{
int ret = -1;
struct sockaddr sa;
struct musl_sockaddr kname;
socklen_t unamelen;
socklen_t knamelen;
if (!lwp_user_accessable(namelen, sizeof(socklen_t)))
{
return -EFAULT;
}
lwp_get_from_user(&unamelen, namelen, sizeof(socklen_t));
if (!unamelen)
{
return -EINVAL;
}
if (!lwp_user_accessable(name, unamelen))
{
return -EFAULT;
}
knamelen = sizeof(struct sockaddr);
ret = getpeername(socket, &sa, &knamelen);
if (ret == 0)
{
sockaddr_tomusl(&sa, &kname);
if (unamelen > sizeof(struct musl_sockaddr))
{
unamelen = sizeof(struct musl_sockaddr);
}
lwp_put_to_user(name, &kname, unamelen);
lwp_put_to_user(namelen, &unamelen, sizeof(socklen_t));
}
else
{
ret = GET_ERRNO();
}
return ret;
}
sysret_t sys_getsockname(int socket, struct musl_sockaddr *name, socklen_t *namelen)
{
int ret = -1;
struct sockaddr sa;
struct musl_sockaddr kname;
socklen_t unamelen;
socklen_t knamelen;
if (!lwp_user_accessable(namelen, sizeof (socklen_t)))
{
return -EFAULT;
}
lwp_get_from_user(&unamelen, namelen, sizeof (socklen_t));
if (!unamelen)
{
return -EINVAL;
}
if (!lwp_user_accessable(name, unamelen))
{
return -EFAULT;
}
knamelen = sizeof(struct sockaddr);
ret = getsockname(socket, &sa, &knamelen);
if (ret == 0)
{
sockaddr_tomusl(&sa, &kname);
if (unamelen > sizeof(struct musl_sockaddr))
{
unamelen = sizeof(struct musl_sockaddr);
}
lwp_put_to_user(name, &kname, unamelen);
lwp_put_to_user(namelen, &unamelen, sizeof(socklen_t));
}
else
{
ret = GET_ERRNO();
}
return ret;
}
sysret_t sys_getsockopt(int socket, int level, int optname, void *optval, socklen_t *optlen)
{
int ret = 0;
socklen_t koptlen = 0;
void *koptval = RT_NULL;
if (!lwp_user_accessable((void *)optlen, sizeof(uint32_t)))
return -EFAULT;
if (lwp_get_from_user(&koptlen, optlen, sizeof(uint32_t)) != sizeof(uint32_t))
{
return -EINVAL;
}
if (!lwp_user_accessable((void *)optval, koptlen))
return -EFAULT;
koptval = kmem_get(koptlen);
if (koptval == RT_NULL)
{
return -ENOMEM;
}
if (lwp_get_from_user(koptval, optval, koptlen) != koptlen)
{
kmem_put(koptval);
return -EINVAL;
}
convert_sockopt(&level, &optname);
ret = getsockopt(socket, level, optname, koptval, &koptlen);
lwp_put_to_user((void *)optval, koptval, koptlen);
lwp_put_to_user((void *)optlen, &koptlen, sizeof(uint32_t));
kmem_put(koptval);
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_setsockopt(int socket, int level, int optname, const void *optval, socklen_t optlen)
{
int ret;
void *koptval = RT_NULL;
if (!lwp_user_accessable((void *)optval, optlen))
return -EFAULT;
koptval = kmem_get(optlen);
if (koptval == RT_NULL)
{
return -ENOMEM;
}
if (lwp_get_from_user(koptval, (void *)optval, optlen) != optlen)
{
kmem_put(koptval);
return -EINVAL;
}
convert_sockopt(&level, &optname);
ret = setsockopt(socket, level, optname, koptval, optlen);
kmem_put(koptval);
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_connect(int socket, const struct musl_sockaddr *name, socklen_t namelen)
{
int ret = 0;
rt_uint16_t family = 0;
struct sockaddr sa;
struct musl_sockaddr kname;
struct sockaddr_un addr_un;
if (!lwp_user_accessable((void *)name, namelen))
{
return -EFAULT;
}
lwp_get_from_user(&family, (void *)name, 2);
if (family == AF_UNIX)
{
if (!lwp_user_accessable((void *)name, sizeof(struct sockaddr_un)))
{
return -EFAULT;
}
lwp_get_from_user(&addr_un, (void *)name, sizeof(struct sockaddr_un));
ret = connect(socket, (struct sockaddr *)(&addr_un), namelen);
}
else
{
lwp_get_from_user(&kname, (void *)name, namelen);
sockaddr_tolwip(&kname, &sa);
ret = connect(socket, &sa, namelen);
}
return ret;
}
sysret_t sys_listen(int socket, int backlog)
{
return listen(socket, backlog);
}
#define MUSLC_MSG_OOB 0x0001
#define MUSLC_MSG_PEEK 0x0002
#define MUSLC_MSG_DONTWAIT 0x0040
#define MUSLC_MSG_WAITALL 0x0100
#define MUSLC_MSG_MORE 0x8000
static int netflags_muslc_2_lwip(int flags)
{
int flgs = 0;
if (flags & MUSLC_MSG_PEEK)
{
flgs |= MSG_PEEK;
}
if (flags & MUSLC_MSG_WAITALL)
{
flgs |= MSG_WAITALL;
}
if (flags & MUSLC_MSG_OOB)
{
flgs |= MSG_OOB;
}
if (flags & MUSLC_MSG_DONTWAIT)
{
flgs |= MSG_DONTWAIT;
}
if (flags & MUSLC_MSG_MORE)
{
flgs |= MSG_MORE;
}
if (flags & MSG_ERRQUEUE)
{
flgs |= MSG_ERRQUEUE;
}
return flgs;
}
#ifdef ARCH_MM_MMU
static int copy_msghdr_from_user(struct msghdr *kmsg, struct msghdr *umsg,
struct iovec **out_iov, void **out_msg_control)
{
size_t iovs_size;
struct iovec *uiov, *kiov;
size_t iovs_buffer_size = 0;
void *iovs_buffer;
if (!lwp_user_accessable(umsg, sizeof(*umsg)))
{
return -EFAULT;
}
lwp_get_from_user(kmsg, umsg, sizeof(*kmsg));
iovs_size = sizeof(*kmsg->msg_iov) * kmsg->msg_iovlen;
if (!lwp_user_accessable(kmsg->msg_iov, iovs_size))
{
return -EFAULT;
}
/* user and kernel */
kiov = kmem_get(iovs_size * 2);
if (!kiov)
{
return -ENOMEM;
}
uiov = (void *)kiov + iovs_size;
lwp_get_from_user(uiov, kmsg->msg_iov, iovs_size);
if (out_iov)
{
*out_iov = uiov;
}
kmsg->msg_iov = kiov;
for (int i = 0; i < kmsg->msg_iovlen; ++i)
{
/*
* We MUST check we can copy data to user after socket done in uiov
* otherwise we will be lost the messages from the network!
*/
if (!lwp_user_accessable(uiov->iov_base, uiov->iov_len))
{
kmem_put(kmsg->msg_iov);
return -EPERM;
}
iovs_buffer_size += uiov->iov_len;
kiov->iov_len = uiov->iov_len;
++kiov;
++uiov;
}
/* msg_iov and msg_control */
iovs_buffer = kmem_get(iovs_buffer_size + kmsg->msg_controllen);
if (!iovs_buffer)
{
kmem_put(kmsg->msg_iov);
return -ENOMEM;
}
kiov = kmsg->msg_iov;
for (int i = 0; i < kmsg->msg_iovlen; ++i)
{
kiov->iov_base = iovs_buffer;
iovs_buffer += kiov->iov_len;
++kiov;
}
*out_msg_control = kmsg->msg_control;
/* msg_control is the end of the iovs_buffer */
kmsg->msg_control = iovs_buffer;
return 0;
}
#endif /* ARCH_MM_MMU */
sysret_t sys_recvmsg(int socket, struct msghdr *msg, int flags)
{
int flgs, ret = -1;
struct msghdr kmsg;
#ifdef ARCH_MM_MMU
void *msg_control;
struct iovec *uiov, *kiov;
#endif
if (!msg)
{
return -EPERM;
}
flgs = netflags_muslc_2_lwip(flags);
#ifdef ARCH_MM_MMU
ret = copy_msghdr_from_user(&kmsg, msg, &uiov, &msg_control);
if (!ret)
{
ret = recvmsg(socket, &kmsg, flgs);
if (ret < 0)
{
goto _free_res;
}
kiov = kmsg.msg_iov;
for (int i = 0; i < kmsg.msg_iovlen; ++i)
{
lwp_put_to_user(uiov->iov_base, kiov->iov_base, kiov->iov_len);
++kiov;
++uiov;
}
lwp_put_to_user(msg_control, kmsg.msg_control, kmsg.msg_controllen);
lwp_put_to_user(&msg->msg_flags, &kmsg.msg_flags, sizeof(kmsg.msg_flags));
_free_res:
kmem_put(kmsg.msg_iov->iov_base);
kmem_put(kmsg.msg_iov);
}
#else
rt_memcpy(&kmsg, msg, sizeof(kmsg));
ret = recvmsg(socket, &kmsg, flgs);
if (!ret)
{
msg->msg_flags = kmsg.msg_flags;
}
#endif /* ARCH_MM_MMU */
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_recvfrom(int socket, void *mem, size_t len, int flags,
struct musl_sockaddr *from, socklen_t *fromlen)
{
int flgs = 0;
#ifdef ARCH_MM_MMU
int ret = -1;
void *kmem = RT_NULL;
#endif
flgs = netflags_muslc_2_lwip(flags);
#ifdef ARCH_MM_MMU
if (!len)
{
return -EINVAL;
}
if (!lwp_user_accessable((void *)mem, len))
{
return -EFAULT;
}
kmem = kmem_get(len);
if (!kmem)
{
return -ENOMEM;
}
if (flags == 0x2)
{
flags = 0x1;
}
if (from)
{
struct sockaddr sa;
ret = recvfrom(socket, kmem, len, flgs, &sa, fromlen);
sockaddr_tomusl(&sa, from);
}
else
{
ret = recvfrom(socket, kmem, len, flgs, NULL, NULL);
}
if (ret > 0)
{
lwp_put_to_user(mem, kmem, len);
}
if (ret < 0)
{
ret = GET_ERRNO();
}
kmem_put(kmem);
return ret;
#else
int ret = -1;
if (from)
{
struct sockaddr sa = {0};
ret = recvfrom(socket, mem, len, flgs, &sa, fromlen);
sockaddr_tomusl(&sa, from);
}
else
{
ret = recvfrom(socket, mem, len, flags, NULL, NULL);
}
return (ret < 0 ? GET_ERRNO() : ret);
#endif
}
sysret_t sys_recv(int socket, void *mem, size_t len, int flags)
{
int flgs = 0;
int ret;
void *kmem = RT_NULL;
if (!lwp_user_accessable((void *)mem, len))
return -EFAULT;
kmem = kmem_get(sizeof(*kmem));
if (kmem == RT_NULL)
{
return -ENOMEM;
}
flgs = netflags_muslc_2_lwip(flags);
ret = recvfrom(socket, kmem, len, flgs, NULL, NULL);
lwp_put_to_user((void *)mem, kmem, len);
kmem_put(kmem);
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_sendmsg(int socket, const struct msghdr *msg, int flags)
{
int flgs, ret = -1;
struct msghdr kmsg;
#ifdef ARCH_MM_MMU
void *msg_control;
struct iovec *uiov, *kiov;
#endif
if (!msg)
{
return -EPERM;
}
flgs = netflags_muslc_2_lwip(flags);
#ifdef ARCH_MM_MMU
ret = copy_msghdr_from_user(&kmsg, (struct msghdr *)msg, &uiov, &msg_control);
if (!ret)
{
kiov = kmsg.msg_iov;
for (int i = 0; i < kmsg.msg_iovlen; ++i)
{
lwp_get_from_user(kiov->iov_base, uiov->iov_base, kiov->iov_len);
++kiov;
++uiov;
}
lwp_get_from_user(kmsg.msg_control, msg_control, kmsg.msg_controllen);
ret = sendmsg(socket, &kmsg, flgs);
kmem_put(kmsg.msg_iov->iov_base);
kmem_put(kmsg.msg_iov);
}
#else
rt_memcpy(&kmsg, msg, sizeof(kmsg));
ret = sendmsg(socket, &kmsg, flgs);
if (!ret)
{
msg->msg_flags = kmsg.msg_flags;
}
#endif /* ARCH_MM_MMU */
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_sendto(int socket, const void *dataptr, size_t size, int flags,
const struct musl_sockaddr *to, socklen_t tolen)
{
int flgs = 0;
#ifdef ARCH_MM_MMU
int ret = -1;
void *kmem = RT_NULL;
#endif
flgs = netflags_muslc_2_lwip(flags);
#ifdef ARCH_MM_MMU
if (!size)
{
return -EINVAL;
}
if (!lwp_user_accessable((void *)dataptr, size))
{
return -EFAULT;
}
kmem = kmem_get(size);
if (!kmem)
{
return -ENOMEM;
}
lwp_get_from_user(kmem, (void *)dataptr, size);
if (to)
{
struct sockaddr sa;
sockaddr_tolwip(to, &sa);
ret = sendto(socket, kmem, size, flgs, &sa, tolen);
}
else
{
ret = sendto(socket, kmem, size, flgs, NULL, tolen);
}
if (ret < 0)
{
ret = GET_ERRNO();
}
kmem_put(kmem);
return ret;
#else
int ret;
if (to)
{
struct sockaddr sa;
sockaddr_tolwip(to, &sa);
ret = sendto(socket, dataptr, size, flgs, &sa, tolen);
}
else
{
ret = sendto(socket, dataptr, size, flgs, NULL, tolen);
}
return (ret < 0 ? GET_ERRNO() : ret);
#endif
}
sysret_t sys_send(int socket, const void *dataptr, size_t size, int flags)
{
int flgs = 0;
int ret = 0;
void *kdataptr = RT_NULL;
if (!lwp_user_accessable((void *)dataptr, size))
return -EFAULT;
kdataptr = kmem_get(size);
if (kdataptr == RT_NULL)
{
return -ENOMEM;
}
if (lwp_get_from_user(kdataptr, (void *)dataptr, size) != size)
{
kmem_put(kdataptr);
return -EINVAL;
}
flgs = netflags_muslc_2_lwip(flags);
ret = sendto(socket, kdataptr, size, flgs, NULL, 0);
kmem_put(kdataptr);
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_socket(int domain, int type, int protocol)
{
int fd = -1;
int nonblock = 0;
/* not support SOCK_CLOEXEC type */
if (type & SOCK_CLOEXEC)
{
type &= ~SOCK_CLOEXEC;
}
if (type & SOCK_NONBLOCK)
{
nonblock = 1;
type &= ~SOCK_NONBLOCK;
}
fd = socket(domain, type, protocol);
if (fd < 0)
{
goto out;
}
if (nonblock)
{
fcntl(fd, F_SETFL, O_NONBLOCK);
}
out:
return (fd < 0 ? GET_ERRNO() : fd);
}
sysret_t sys_socketpair(int domain, int type, int protocol, int fd[2])
{
#ifdef RT_USING_SAL
int ret = 0;
int k_fd[2];
if (!lwp_user_accessable((void *)fd, sizeof(int [2])))
{
return -EFAULT;
}
ret = socketpair(domain, type, protocol, k_fd);
if (ret == 0)
{
lwp_put_to_user(fd, k_fd, sizeof(int [2]));
}
return ret;
#else
return -ELIBACC;
#endif
}
sysret_t sys_closesocket(int socket)
{
return closesocket(socket);
}
#endif
rt_thread_t sys_thread_find(char *name)
{
int len = 0;
char *kname = RT_NULL;
rt_thread_t thread;
len = lwp_user_strlen(name);
if (len <= 0)
{
return RT_NULL;
}
kname = (char *)kmem_get(len + 1);
if (!kname)
{
return RT_NULL;
}
if (lwp_get_from_user(kname, (void *)name, len + 1) != (len + 1))
{
kmem_put(kname);
return RT_NULL;
}
thread = rt_thread_find(name);
kmem_put(kname);
return thread;
}
rt_tick_t sys_tick_get(void)
{
return rt_tick_get();
}
sysret_t sys_thread_mdelay(rt_int32_t ms)
{
return rt_thread_mdelay(ms);
}
struct k_sigaction {
void (*handler)(int);
unsigned long flags;
void (*restorer)(void);
unsigned mask[2];
};
sysret_t sys_sigaction(int sig, const struct k_sigaction *act,
struct k_sigaction *oact, size_t sigsetsize)
{
int ret = -RT_EINVAL;
struct rt_lwp *lwp;
struct lwp_sigaction kact, *pkact = RT_NULL;
struct lwp_sigaction koact, *pkoact = RT_NULL;
if (!sigsetsize)
{
SET_ERRNO(EINVAL);
goto out;
}
if (sigsetsize > sizeof(lwp_sigset_t))
{
sigsetsize = sizeof(lwp_sigset_t);
}
if (!act && !oact)
{
SET_ERRNO(EINVAL);
goto out;
}
if (oact)
{
if (!lwp_user_accessable((void *)oact, sizeof(*oact)))
{
SET_ERRNO(EFAULT);
goto out;
}
pkoact = &koact;
}
if (act)
{
if (!lwp_user_accessable((void *)act, sizeof(*act)))
{
SET_ERRNO(EFAULT);
goto out;
}
kact.sa_flags = act->flags;
kact.__sa_handler._sa_handler = act->handler;
lwp_memcpy(&kact.sa_mask, &act->mask, sigsetsize);
kact.sa_restorer = act->restorer;
pkact = &kact;
}
lwp = lwp_self();
RT_ASSERT(lwp);
ret = lwp_signal_action(lwp, sig, pkact, pkoact);
#ifdef ARCH_MM_MMU
if (ret == 0 && oact)
{
lwp_put_to_user(&oact->handler, &pkoact->__sa_handler._sa_handler, sizeof(void (*)(int)));
lwp_put_to_user(&oact->mask, &pkoact->sa_mask, sigsetsize);
lwp_put_to_user(&oact->flags, &pkoact->sa_flags, sizeof(int));
lwp_put_to_user(&oact->restorer, &pkoact->sa_restorer, sizeof(void (*)(void)));
}
#endif /* ARCH_MM_MMU */
out:
return (ret < 0 ? GET_ERRNO() : ret);
}
static int mask_command_u2k[] = {
[SIG_BLOCK] = LWP_SIG_MASK_CMD_BLOCK,
[SIG_UNBLOCK] = LWP_SIG_MASK_CMD_UNBLOCK,
[SIG_SETMASK] = LWP_SIG_MASK_CMD_SET_MASK,
};
sysret_t sys_sigprocmask(int how, const sigset_t *sigset, sigset_t *oset, size_t size)
{
int ret = -1;
lwp_sigset_t *pnewset = RT_NULL, *poldset = RT_NULL;
#ifdef ARCH_MM_MMU
lwp_sigset_t newset, oldset;
#endif /* ARCH_MM_MMU*/
if (!size)
{
return -EINVAL;
}
if (!oset && !sigset)
{
return -EINVAL;
}
if (size > sizeof(lwp_sigset_t))
{
size = sizeof(lwp_sigset_t);
}
if (oset)
{
#ifdef ARCH_MM_MMU
if (!lwp_user_accessable((void *)oset, size))
{
return -EFAULT;
}
poldset = &oldset;
#else
if (!lwp_user_accessable((void *)oset, size))
{
return -EFAULT;
}
poldset = (lwp_sigset_t *)oset;
#endif
}
if (sigset)
{
#ifdef ARCH_MM_MMU
if (!lwp_user_accessable((void *)sigset, size))
{
return -EFAULT;
}
lwp_get_from_user(&newset, (void *)sigset, size);
pnewset = &newset;
#else
if (!lwp_user_accessable((void *)sigset, size))
{
return -EFAULT;
}
pnewset = (lwp_sigset_t *)sigset;
#endif /* ARCH_MM_MMU */
}
ret = lwp_thread_signal_mask(rt_thread_self(), mask_command_u2k[how], pnewset, poldset);
#ifdef ARCH_MM_MMU
if (ret < 0)
{
return ret;
}
if (oset)
{
lwp_put_to_user(oset, poldset, size);
}
#endif /* ARCH_MM_MMU */
return (ret < 0 ? -EFAULT: ret);
}
sysret_t sys_sigpending(sigset_t *sigset, size_t sigsize)
{
sysret_t ret = 0;
lwp_sigset_t lwpset;
/* Verify and Get sigset, timeout */
if (!sigset || !lwp_user_accessable((void *)sigset, sigsize))
{
ret = -EFAULT;
}
else
{
/* Fit sigset size to lwp set */
if (sizeof(lwpset) < sigsize)
{
LOG_I("%s: sigsize (%lx) extends lwp sigset chunk\n", __func__, sigsize);
sigsize = sizeof(lwpset);
}
lwp_thread_signal_pending(rt_thread_self(), &lwpset);
if (!lwp_put_to_user(sigset, &lwpset, sigsize))
RT_ASSERT(0); /* should never happened */
}
return ret;
}
sysret_t sys_sigtimedwait(const sigset_t *sigset, siginfo_t *info, const struct timespec *timeout, size_t sigsize)
{
int sig;
size_t ret;
lwp_sigset_t lwpset;
siginfo_t kinfo;
struct timespec ktimeout;
struct timespec *ptimeout;
/* for RT_ASSERT */
RT_UNUSED(ret);
/* Fit sigset size to lwp set */
if (sizeof(lwpset) < sigsize)
{
LOG_I("%s: sigsize (%lx) extends lwp sigset chunk\n", __func__, sigsize);
sigsize = sizeof(lwpset);
}
else
{
/* if sigset of user is smaller, clear extra space */
memset(&lwpset, 0, sizeof(lwpset));
}
/* Verify and Get sigset, timeout */
if (!sigset || !lwp_user_accessable((void *)sigset, sigsize))
{
return -EFAULT;
}
else
{
ret = lwp_get_from_user(&lwpset, (void *)sigset, sigsize);
RT_ASSERT(ret == sigsize);
}
if (timeout)
{
if (!lwp_user_accessable((void *)timeout, sizeof(*timeout)))
return -EFAULT;
else
{
ret = lwp_get_from_user(&ktimeout, (void *)timeout, sizeof(*timeout));
ptimeout = &ktimeout;
RT_ASSERT(ret == sizeof(*timeout));
}
}
else
{
ptimeout = RT_NULL;
}
sig = lwp_thread_signal_timedwait(rt_thread_self(), &lwpset, &kinfo, ptimeout);
if (sig > 0 && info)
{
if (!lwp_user_accessable((void *)info, sizeof(*info)))
return -EFAULT;
else
{
ret = lwp_put_to_user(info, &kinfo, sizeof(*info));
RT_ASSERT(ret == sizeof(*info));
}
}
return sig;
}
sysret_t sys_tkill(int tid, int sig)
{
#ifdef ARCH_MM_MMU
rt_thread_t thread;
sysret_t ret;
/**
* Brief: Match a tid and do the kill
*
* Note: Critical Section
* - the thread (READ. may be released at the meantime; protected by locked)
*/
thread = lwp_tid_get_thread_and_inc_ref(tid);
ret = lwp_thread_signal_kill(thread, sig, SI_USER, 0);
lwp_tid_dec_ref(thread);
return ret;
#else
return lwp_thread_kill((rt_thread_t)tid, sig);
#endif
}
sysret_t sys_thread_sigprocmask(int how, const lwp_sigset_t *sigset, lwp_sigset_t *oset, size_t size)
{
int ret = -1;
lwp_sigset_t *pnewset = RT_NULL, *poldset = RT_NULL;
#ifdef ARCH_MM_MMU
lwp_sigset_t newset, oldset;
#endif /* ARCH_MM_MMU */
if (!size)
{
return -EINVAL;
}
if (!oset && !sigset)
{
return -EINVAL;
}
if (size != sizeof(lwp_sigset_t))
{
return -EINVAL;
}
if (oset)
{
#ifdef ARCH_MM_MMU
if (!lwp_user_accessable((void *)oset, size))
{
return -EFAULT;
}
poldset = &oldset;
#else
if (!lwp_user_accessable((void *)oset, size))
{
return -EFAULT;
}
poldset = oset;
#endif
}
if (sigset)
{
#ifdef ARCH_MM_MMU
if (!lwp_user_accessable((void *)sigset, size))
{
return -EFAULT;
}
lwp_get_from_user(&newset, (void *)sigset, sizeof(lwp_sigset_t));
pnewset = &newset;
#else
if (!lwp_user_accessable((void *)sigset, size))
{
return -EFAULT;
}
pnewset = (lwp_sigset_t *)sigset;
#endif
}
ret = lwp_thread_signal_mask(rt_thread_self(), mask_command_u2k[how], pnewset, poldset);
if (ret < 0)
{
return ret;
}
#ifdef ARCH_MM_MMU
if (oset)
{
lwp_put_to_user(oset, poldset, sizeof(lwp_sigset_t));
}
#endif
return (ret < 0 ? -EFAULT: ret);
}
#ifndef ARCH_MM_MMU
sysret_t sys_lwp_sighandler_set(int sig, lwp_sighandler_t func)
{
if (!lwp_user_accessable((void *)func, sizeof(lwp_sighandler_t)))
{
return -EFAULT;
}
lwp_sighandler_set(sig, func);
return 0;
}
sysret_t sys_thread_sighandler_set(int sig, lwp_sighandler_t func)
{
if (!lwp_user_accessable((void *)func, sizeof(lwp_sighandler_t)))
{
return -EFAULT;
}
lwp_thread_sighandler_set(sig, func);
return 0;
}
#endif /* not defined ARCH_MM_MMU */
sysret_t sys_waitpid(int32_t pid, int *status, int options)
{
int ret = -1;
#ifdef ARCH_MM_MMU
if (!lwp_user_accessable((void *)status, sizeof(int)))
{
return -EFAULT;
}
else
{
ret = lwp_waitpid(pid, status, options, RT_NULL);
}
#else
if (!lwp_user_accessable((void *)status, sizeof(int)))
{
return -EFAULT;
}
ret = waitpid(pid, status, options);
#endif
return ret;
}
#if defined(RT_USING_SAL) && defined(SAL_USING_POSIX)
struct musl_addrinfo
{
int ai_flags;
int ai_family;
int ai_socktype;
int ai_protocol;
socklen_t ai_addrlen;
struct musl_sockaddr *ai_addr;
char *ai_canonname;
struct musl_addrinfo *ai_next;
};
sysret_t sys_getaddrinfo(const char *nodename,
const char *servname,
const struct musl_addrinfo *hints,
struct musl_addrinfo *res)
{
int ret = -1;
struct addrinfo *k_res = NULL;
char *k_nodename = NULL;
char *k_servname = NULL;
struct addrinfo *k_hints = NULL;
#ifdef ARCH_MM_MMU
int len = 0;
#endif
#ifdef ARCH_MM_MMU
if (!lwp_user_accessable((void *)res, sizeof(*res)))
{
SET_ERRNO(EFAULT);
goto exit;
}
#endif
if (nodename)
{
#ifdef ARCH_MM_MMU
len = lwp_user_strlen(nodename);
if (len <= 0)
{
SET_ERRNO(EFAULT);
goto exit;
}
k_nodename = (char *)kmem_get(len + 1);
if (!k_nodename)
{
SET_ERRNO(ENOMEM);
goto exit;
}
if (lwp_get_from_user(k_nodename, (void *)nodename, len + 1) != len + 1)
{
SET_ERRNO(EFAULT);
goto exit;
}
#else
k_nodename = rt_strdup(nodename);
if (!k_nodename)
{
SET_ERRNO(ENOMEM);
goto exit;
}
#endif
}
if (servname)
{
#ifdef ARCH_MM_MMU
len = lwp_user_strlen(servname);
if (len <= 0)
{
SET_ERRNO(EFAULT);
goto exit;
}
k_servname = (char *)kmem_get(len + 1);
if (!k_servname)
{
SET_ERRNO(ENOMEM);
goto exit;
}
if (lwp_get_from_user(k_servname, (void *)servname, len + 1) < 0)
{
SET_ERRNO(EFAULT);
goto exit;
}
#else
k_servname = rt_strdup(servname);
if (!k_servname)
{
SET_ERRNO(ENOMEM);
goto exit;
}
#endif
}
if (hints)
{
#ifdef ARCH_MM_MMU
if (!lwp_user_accessable((void *)hints, sizeof(*hints)))
{
SET_ERRNO(EFAULT);
goto exit;
}
#endif
k_hints = (struct addrinfo *) rt_malloc(sizeof *hints);
if (!k_hints)
{
SET_ERRNO(ENOMEM);
goto exit;
}
rt_memset(k_hints, 0x0, sizeof(struct addrinfo));
k_hints->ai_flags = hints->ai_flags;
k_hints->ai_family = hints->ai_family;
k_hints->ai_socktype = hints->ai_socktype;
k_hints->ai_protocol = hints->ai_protocol;
k_hints->ai_addrlen = hints->ai_addrlen;
}
ret = sal_getaddrinfo(k_nodename, k_servname, k_hints, &k_res);
if (ret == 0)
{
/* set sockaddr */
sockaddr_tomusl(k_res->ai_addr, res->ai_addr);
res->ai_addrlen = k_res->ai_addrlen;
/* set up addrinfo */
res->ai_family = k_res->ai_family;
res->ai_flags = k_res->ai_flags;
res->ai_next = NULL;
if (hints != NULL)
{
/* copy socktype & protocol from hints if specified */
res->ai_socktype = hints->ai_socktype;
res->ai_protocol = hints->ai_protocol;
}
sal_freeaddrinfo(k_res);
k_res = NULL;
}
exit:
if (ret < 0)
{
ret = GET_ERRNO();
}
#ifdef ARCH_MM_MMU
if (k_nodename)
{
kmem_put(k_nodename);
}
#else
if (k_nodename)
{
rt_free(k_nodename);
}
#endif
#ifdef ARCH_MM_MMU
if (k_servname)
{
kmem_put(k_servname);
}
#else
if (k_servname)
{
rt_free(k_servname);
}
#endif
if (k_hints)
{
rt_free(k_hints);
}
return ret;
}
#define HOSTENT_BUFSZ 512
sysret_t sys_gethostbyname2_r(const char *name, int af, struct hostent *ret,
char *buf, size_t buflen,
struct hostent **result, int *err)
{
int ret_val = -1;
int sal_ret = -1 , sal_err = -1;
struct hostent sal_he, sal_tmp;
struct hostent *sal_result = NULL;
char *sal_buf = NULL;
char *k_name = NULL;
int len = 0;
#ifdef ARCH_MM_MMU
if (!lwp_user_accessable((void *)err, sizeof(*err)))
{
SET_ERRNO(EFAULT);
goto __exit;
}
if (!lwp_user_accessable((void *)result, sizeof(*result))
|| !lwp_user_accessable((void *)ret, sizeof(*ret))
|| !lwp_user_accessable((void *)buf, buflen))
{
/* not all arguments given */
*err = EFAULT;
SET_ERRNO(EFAULT);
goto __exit;
}
len = lwp_user_strlen(name);
if (len <= 0)
{
*err = EFAULT;
SET_ERRNO(EFAULT);
goto __exit;
}
k_name = (char *)kmem_get(len + 1);
if (!k_name)
{
SET_ERRNO(ENOMEM);
goto __exit;
}
if (lwp_get_from_user(k_name, (void *)name, len + 1) < 0)
{
SET_ERRNO(EFAULT);
goto __exit;
}
#else
k_name = rt_strdup(name);
if (k_name == NULL)
{
SET_ERRNO(ENOMEM);
goto __exit;
}
#endif
*result = ret;
sal_buf = (char *)malloc(HOSTENT_BUFSZ);
if (sal_buf == NULL)
{
SET_ERRNO(ENOMEM);
goto __exit;
}
/* get host by name in SAL */
sal_ret = sal_gethostbyname_r(k_name, &sal_he, sal_buf, HOSTENT_BUFSZ, &sal_result, &sal_err);
if (sal_ret == 0)
{
int index = 0, cnt = 0;
char *ptr = buf;
/* get counter */
index = 0;
while (sal_he.h_addr_list[index] != NULL)
{
index++;
}
cnt = index + 1;
#ifdef ARCH_MM_MMU
/* update user space hostent */
lwp_put_to_user(buf, k_name, buflen - (ptr - buf));
lwp_memcpy(&sal_tmp, &sal_he, sizeof(sal_he));
sal_tmp.h_name = ptr;
ptr += rt_strlen(k_name);
sal_tmp.h_addr_list = (char**)ptr;
ptr += cnt * sizeof(char *);
index = 0;
while (sal_he.h_addr_list[index] != NULL)
{
sal_tmp.h_addr_list[index] = ptr;
lwp_memcpy(ptr, sal_he.h_addr_list[index], sal_he.h_length);
ptr += sal_he.h_length;
index++;
}
sal_tmp.h_addr_list[index] = NULL;
lwp_put_to_user(ret, &sal_tmp, sizeof(sal_tmp));
#else
/* update user space hostent */
ret->h_addrtype = sal_he.h_addrtype;
ret->h_length = sal_he.h_length;
rt_strncpy(ptr, k_name, buflen - (ptr - buf));
ret->h_name = ptr;
ptr += strlen(k_name);
ret->h_addr_list = (char**)ptr;
ptr += cnt * sizeof(char *);
index = 0;
while (sal_he.h_addr_list[index] != NULL)
{
ret->h_addr_list[index] = ptr;
lwp_memcpy(ptr, sal_he.h_addr_list[index], sal_he.h_length);
ptr += sal_he.h_length;
index++;
}
ret->h_addr_list[index] = NULL;
#endif
ret_val = 0;
}
else
{
SET_ERRNO(EINVAL);
}
__exit:
if (ret_val < 0)
{
ret_val = GET_ERRNO();
}
/* release buffer */
if (sal_buf)
{
free(sal_buf);
}
#ifdef ARCH_MM_MMU
if (k_name)
{
kmem_put(k_name);
}
#else
if (k_name)
{
free(k_name);
}
#endif
return ret_val;
}
#endif
long sys_getcwd(char *buf, size_t size)
{
char *tmp = RT_NULL;
long ret = -1;
if (!lwp_user_accessable((void *)buf, size))
{
return ret;
}
tmp = (char *)rt_malloc(size);
if (!tmp)
{
return ret;
}
if (getcwd(tmp, size) != RT_NULL)
{
if (lwp_put_to_user(buf, tmp, size) > 0)
{
if (buf != RT_NULL)
ret = strlen(buf);
else
ret = -EFAULT;
}
}
rt_free(tmp);
return ret;
}
sysret_t sys_chdir(const char *path)
{
#ifdef ARCH_MM_MMU
int err = 0;
int len = 0;
int errcode;
char *kpath = RT_NULL;
len = lwp_user_strlen(path);
if (len <= 0)
{
return -EFAULT;
}
kpath = (char *)kmem_get(len + 1);
if (!kpath)
{
return -ENOMEM;
}
if (lwp_get_from_user(kpath, (void *)path, len + 1) != (len + 1))
{
kmem_put(kpath);
return -EINVAL;
}
err = chdir(kpath);
errcode = err != 0 ? GET_ERRNO() : 0;
kmem_put(kpath);
return errcode;
#else
int ret = chdir(path);
return (ret < 0 ? GET_ERRNO() : ret);
#endif
}
sysret_t sys_fchdir(int fd)
{
int errcode = -ENOSYS;
#ifdef ARCH_MM_MMU
#ifdef RT_USING_DFS_V2
int err = -1;
struct dfs_file *d;
char *kpath;
d = fd_get(fd);
if (!d || !d->vnode)
{
return -EBADF;
}
kpath = dfs_dentry_full_path(d->dentry);
if (!kpath)
{
return -EACCES;
}
err = chdir(kpath);
errcode = err != 0 ? GET_ERRNO() : 0;
kmem_put(kpath);
#endif
#endif
return errcode;
}
sysret_t sys_mkdir(const char *path, mode_t mode)
{
#ifdef ARCH_MM_MMU
int err = 0;
int len = 0;
char *kpath = RT_NULL;
len = lwp_user_strlen(path);
if (len <= 0)
{
return -EFAULT;
}
kpath = (char *)kmem_get(len + 1);
if (!kpath)
{
return -ENOMEM;
}
if (lwp_get_from_user(kpath, (void *)path, len + 1) != (len + 1))
{
kmem_put(kpath);
return -EINVAL;
}
err = _SYS_WRAP(mkdir(kpath, mode));
kmem_put(kpath);
return err;
#else
int ret = mkdir(path, mode);
return (ret < 0 ? GET_ERRNO() : ret);
#endif
}
sysret_t sys_rmdir(const char *path)
{
int err = 0;
int ret = 0;
#ifdef ARCH_MM_MMU
int len = 0;
char *kpath = RT_NULL;
len = lwp_user_strlen(path);
if (len <= 0)
{
return -EFAULT;
}
kpath = (char *)kmem_get(len + 1);
if (!kpath)
{
return -ENOMEM;
}
if (lwp_get_from_user(kpath, (void *)path, len + 1) != (len + 1))
{
kmem_put(kpath);
return -EINVAL;
}
ret = rmdir(kpath);
if(ret < 0)
{
err = GET_ERRNO();
}
kmem_put(kpath);
return (err < 0 ? err : ret);
#else
ret = rmdir(path);
if(ret < 0)
{
err = GET_ERRNO();
}
return (err < 0 ? err : ret);
#endif
}
sysret_t sys_getdents(int fd, struct libc_dirent *dirp, size_t nbytes)
{
int ret = -1;
struct dfs_file *file;
size_t cnt = (nbytes / sizeof(struct libc_dirent));
size_t rtt_nbytes = 0;
struct dirent *rtt_dirp;
#ifdef ARCH_MM_MMU
if (!lwp_user_accessable((void *)dirp, sizeof(struct libc_dirent)))
{
return -EFAULT;
}
#endif
if (cnt == 0)
{
return -EINVAL;
}
rtt_nbytes = cnt * sizeof(struct dirent);
rtt_dirp = (struct dirent *)rt_malloc(rtt_nbytes);
if (!rtt_dirp)
{
return -ENOMEM;
}
file = fd_get(fd);
ret = dfs_file_getdents(file, rtt_dirp, rtt_nbytes);
if (ret > 0)
{
size_t i = 0;
cnt = ret / sizeof(struct dirent);
for (i = 0; i < cnt; i++)
{
dirp[i].d_ino = 0;
dirp[i].d_off = i*sizeof(struct libc_dirent);
dirp[i].d_type = rtt_dirp[i].d_type;
dirp[i].d_reclen = sizeof(struct libc_dirent);
strcpy(dirp[i].d_name, rtt_dirp[i].d_name);
}
ret = cnt * sizeof(struct libc_dirent);
}
if (ret < 0)
{
ret = GET_ERRNO();
}
rt_free(rtt_dirp);
return ret;
}
sysret_t sys_get_errno(void)
{
return rt_get_errno();
}
#ifdef ARCH_MM_MMU
sysret_t sys_set_thread_area(void *p)
{
rt_thread_t thread;
thread = rt_thread_self();
thread->thread_idr = p;
arch_set_thread_area(p);
return 0;
}
sysret_t sys_set_tid_address(int *tidptr)
{
rt_thread_t thread;
#ifdef ARCH_MM_MMU
if (!lwp_user_accessable((void *)tidptr, sizeof(int)))
{
return -EFAULT;
}
#endif
thread = rt_thread_self();
thread->clear_child_tid = tidptr;
return thread->tid;
}
#endif /* ARCH_MM_MMU */
sysret_t sys_gettid(void)
{
return rt_thread_self()->tid;
}
sysret_t sys_access(const char *filename, int mode)
{
int ret = 0;
#ifdef ARCH_MM_MMU
rt_size_t len = 0;
char *kfilename = RT_NULL;
len = lwp_user_strlen(filename);
if (len <= 0)
{
return -EINVAL;
}
kfilename = (char *)kmem_get(len + 1);
if (!kfilename)
{
return -ENOMEM;
}
if (lwp_get_from_user(kfilename, (void *)filename, len + 1) != (len + 1))
{
kmem_put(kfilename);
return -EFAULT;
}
ret = access(kfilename, mode);
if (ret < 0)
{
ret = GET_ERRNO();
}
kmem_put(kfilename);
return ret;
#else
ret = access(filename, mode);
return (ret < 0 ? GET_ERRNO() : ret);
#endif
}
sysret_t sys_pipe(int fd[2])
{
int ret;
int kfd[2] = {0, 0};
if (!lwp_user_accessable((void *)fd, sizeof(int[2])))
{
return -EFAULT;
}
ret = pipe(kfd);
lwp_put_to_user((void *)fd, kfd, sizeof(int[2]));
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_wait4(pid_t pid, int *status, int options, struct rusage *ru)
{
return lwp_waitpid(pid, status, options, ru);
}
sysret_t sys_clock_settime(clockid_t clk, const struct timespec *ts)
{
int ret = 0;
#ifdef ARCH_MM_MMU
size_t size = sizeof(struct timespec);
struct timespec *kts = NULL;
if (!lwp_user_accessable((void *)ts, size))
{
return -EFAULT;
}
kts = kmem_get(size);
if (!kts)
{
return -ENOMEM;
}
lwp_get_from_user(kts, (void *)ts, size);
ret = clock_settime(clk, kts);
if (ret < 0)
{
ret = GET_ERRNO();
}
kmem_put(kts);
return ret;
#else
if (!lwp_user_accessable((void *)ts, sizeof(struct timespec)))
{
return -EFAULT;
}
ret = clock_settime(clk, ts);
return (ret < 0 ? GET_ERRNO() : ret);
#endif
}
sysret_t sys_clock_gettime(clockid_t clk, struct timespec *ts)
{
int ret = 0;
#ifdef ARCH_MM_MMU
size_t size = sizeof(struct timespec);
struct timespec *kts = NULL;
if (!lwp_user_accessable((void *)ts, size))
{
return -EFAULT;
}
kts = kmem_get(size);
if (!kts)
{
return -ENOMEM;
}
ret = clock_gettime(clk, kts);
if (ret != -1)
lwp_put_to_user(ts, kts, size);
if (ret < 0)
{
ret = GET_ERRNO();
}
kmem_put(kts);
return ret;
#else
if (!lwp_user_accessable((void *)ts, sizeof(struct timespec)))
{
return -EFAULT;
}
ret = clock_gettime(clk, ts);
return (ret < 0 ? GET_ERRNO() : ret);
#endif
}
sysret_t sys_clock_nanosleep(clockid_t clk, int flags, const struct timespec *rqtp, struct timespec *rmtp)
{
int ret = 0;
dbg_log(DBG_LOG, "sys_nanosleep\n");
if (!lwp_user_accessable((void *)rqtp, sizeof *rqtp))
return -EFAULT;
#ifdef ARCH_MM_MMU
struct timespec rqtp_k;
struct timespec rmtp_k;
lwp_get_from_user(&rqtp_k, (void *)rqtp, sizeof rqtp_k);
ret = clock_nanosleep(clk, flags, &rqtp_k, &rmtp_k);
if ((ret != -1 || rt_get_errno() == EINTR) && rmtp && lwp_user_accessable((void *)rmtp, sizeof *rmtp))
{
lwp_put_to_user(rmtp, (void *)&rmtp_k, sizeof rmtp_k);
if(ret != 0)
return -EINTR;
}
#else
if (rmtp)
{
if (!lwp_user_accessable((void *)rmtp, sizeof *rmtp))
return -EFAULT;
ret = clock_nanosleep(clk, flags, rqtp, rmtp);
}
#endif
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_clock_getres(clockid_t clk, struct timespec *ts)
{
int ret = 0;
#ifdef ARCH_MM_MMU
struct timespec kts;
size_t size = sizeof(struct timespec);
if (!lwp_user_accessable((void *)ts, size))
{
return -EFAULT;
}
ret = clock_getres(clk, &kts);
if (ret != -1)
lwp_put_to_user(ts, &kts, size);
#else
if (!lwp_user_accessable((void *)ts, sizeof(struct timespec)))
{
return -EFAULT;
}
ret = clock_getres(clk, ts);
#endif
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_rename(const char *oldpath, const char *newpath)
{
int ret = -1;
#ifdef ARCH_MM_MMU
int err;
err = lwp_user_strlen(oldpath);
if (err <= 0)
{
return -EFAULT;
}
err = lwp_user_strlen(newpath);
if (err <= 0)
{
return -EFAULT;
}
#endif
ret = rename(oldpath, newpath);
return (ret < 0 ? GET_ERRNO() : ret);
}
typedef unsigned long long rlim_t;
struct rlimit {
rlim_t rlim_cur;
rlim_t rlim_max;
};
#define RLIMIT_CPU 0
#define RLIMIT_FSIZE 1
#define RLIMIT_DATA 2
#define RLIMIT_STACK 3
#define RLIMIT_CORE 4
#define RLIMIT_RSS 5
#define RLIMIT_NPROC 6
#define RLIMIT_NOFILE 7
#define RLIMIT_MEMLOCK 8
#define RLIMIT_AS 9
sysret_t sys_prlimit64(pid_t pid,
unsigned int resource,
const struct rlimit *new_rlim,
struct rlimit *old_rlim)
{
return -ENOSYS;
}
sysret_t sys_getrlimit(unsigned int resource, unsigned long rlim[2])
{
int ret = -1;
unsigned long krlim[2] = {0, 0};
if (!lwp_user_accessable((void *)rlim, sizeof(unsigned long [2])))
{
return -EFAULT;
}
if (lwp_get_from_user(krlim, rlim, sizeof(unsigned long [2])) != sizeof(unsigned long [2]))
{
return -EINVAL;
}
switch (resource)
{
case RLIMIT_NOFILE:
{
struct dfs_fdtable *fdt = dfs_fdtable_get();
dfs_file_lock();
krlim[0] = fdt->maxfd;
dfs_file_unlock();
krlim[1] = DFS_FD_MAX;
ret = 0;
}
break;
default:
return -EINVAL;
break;
}
lwp_put_to_user((void *)rlim, krlim, sizeof(unsigned long [2]));
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_setrlimit(unsigned int resource, struct rlimit *rlim)
{
return -ENOSYS;
}
sysret_t sys_getrandom(void *buf, size_t buflen, unsigned int flags)
{
int ret = -1;
int count = 0;
void *kmem = RT_NULL;
rt_device_t rd_dev = RT_NULL;
if (flags & GRND_RANDOM)
rd_dev = rt_device_find("random");
else
rd_dev = rt_device_find("urandom");
if (rd_dev == RT_NULL)
{
return -EFAULT;
}
if (rt_device_open(rd_dev, RT_DEVICE_OFLAG_RDONLY) != RT_EOK)
{
return -EFAULT;
}
if (!lwp_user_accessable(buf, buflen))
{
rt_device_close(rd_dev);
return -EFAULT;
}
#ifdef ARCH_MM_MMU
kmem = kmem_get(buflen);
if (!kmem)
{
rt_device_close(rd_dev);
return -ENOMEM;
}
while (count < buflen)
{
ret = rt_device_read(rd_dev, count, (char *)kmem + count, buflen - count);
if (ret <= 0)
break;
count += ret;
}
rt_device_close(rd_dev);
ret = count;
if (count > 0)
{
ret = lwp_put_to_user(buf, kmem, count);
}
kmem_put(kmem);
#else
while (count < buflen)
{
ret = rt_device_read(rd_dev, count, (char *)kmem + count, buflen - count);
if (ret <= 0)
break;
count += ret;
}
rt_device_close(rd_dev);
ret = count;
#endif
return ret;
}
/**
* readlink() places the contents of the symbolic link pathname in the buffer buf, which has size bufsiz.
* readlink() does not append a null byte to buf.
* It will (silently) truncate the contents(to a length of bufsiz characters),
* in case the buffer is too small to hold all of the contents.
*/
ssize_t sys_readlink(char* path, char *buf, size_t bufsz)
{
size_t len, copy_len;
int err, rtn;
char *copy_path;
len = lwp_user_strlen(path);
if (len <= 0)
{
return -EFAULT;
}
if (!lwp_user_accessable(buf, bufsz))
{
return -EINVAL;
}
copy_path = (char*)rt_malloc(len + 1);
if (!copy_path)
{
return -ENOMEM;
}
copy_len = lwp_get_from_user(copy_path, path, len);
copy_path[copy_len] = '\0';
char *link_fn = (char *)rt_malloc(DFS_PATH_MAX);
if (link_fn)
{
err = dfs_file_readlink(copy_path, link_fn, DFS_PATH_MAX);
if (err > 0)
{
buf[bufsz > err ? err : bufsz] = '\0';
rtn = lwp_put_to_user(buf, link_fn, bufsz > err ? err : bufsz);
}
else
{
rtn = -EIO;
}
rt_free(link_fn);
}
else
{
rtn = -ENOMEM;
}
rt_free(copy_path);
return rtn;
}
sysret_t sys_sched_setaffinity(pid_t pid, size_t size, void *set)
{
void *kset = RT_NULL;
if (size <= 0 || size > sizeof(cpu_set_t))
{
return -EINVAL;
}
if (!lwp_user_accessable((void *)set, size))
return -EFAULT;
kset = kmem_get(size);
if (kset == RT_NULL)
{
return -ENOMEM;
}
if (lwp_get_from_user(kset, set, size) != size)
{
kmem_put(kset);
return -EINVAL;
}
for (int i = 0;i < size * 8; i++)
{
if (CPU_ISSET_S(i, size, kset))
{
kmem_put(kset);
/**
* yes it's tricky.
* But when we talk about 'pid' from GNU libc, it's the 'task-id'
* aka 'thread->tid' known in kernel.
*/
return lwp_setaffinity(pid, i);
}
}
kmem_put(kset);
return -1;
}
sysret_t sys_sched_getaffinity(const pid_t pid, size_t size, void *set)
{
#ifdef ARCH_MM_MMU
LWP_DEF_RETURN_CODE(rc);
void *mask;
struct rt_lwp *lwp;
if (size <= 0 || size > sizeof(cpu_set_t))
{
return -EINVAL;
}
if (!lwp_user_accessable(set, size))
{
return -EFAULT;
}
mask = kmem_get(size);
if (!mask)
{
return -ENOMEM;
}
CPU_ZERO_S(size, mask);
lwp_pid_lock_take();
lwp = lwp_from_pid_locked(pid);
if (!lwp)
{
rc = -ESRCH;
}
else
{
#ifdef RT_USING_SMP
if (lwp->bind_cpu == RT_CPUS_NR) /* not bind */
{
for(int i = 0; i < RT_CPUS_NR; i++)
{
CPU_SET_S(i, size, mask);
}
}
else /* set bind cpu */
{
/* TODO: only single-core bindings are now supported of rt-smart */
CPU_SET_S(lwp->bind_cpu, size, mask);
}
#else
CPU_SET_S(0, size, mask);
#endif
if (lwp_put_to_user(set, mask, size) != size)
rc = -EFAULT;
else
rc = size;
}
lwp_pid_lock_release();
kmem_put(mask);
LWP_RETURN(rc);
#else
return -1;
#endif
}
sysret_t sys_sysinfo(void *info)
{
#ifdef ARCH_MM_MMU
struct sysinfo kinfo = {0};
rt_size_t total_pages = 0, free_pages = 0;
if (!lwp_user_accessable(info, sizeof(struct sysinfo)))
{
return -EFAULT;
}
kinfo.uptime = rt_tick_get_millisecond() / 1000;
/* TODO: 1, 5, and 15 minute load averages */
kinfo.loads[0] = kinfo.loads[1] = kinfo.loads[2] = rt_object_get_length(RT_Object_Class_Thread);
rt_page_get_info(&total_pages, &free_pages);
kinfo.totalram = total_pages;
kinfo.freeram = free_pages;
/* TODO: implementation procfs, here is counter the lwp number */
struct lwp_avl_struct *pids = lwp_get_pid_ary();
for (int index = 0; index < RT_LWP_MAX_NR; index++)
{
struct rt_lwp *lwp = (struct rt_lwp *)pids[index].data;
if (lwp)
{
kinfo.procs++;
}
}
rt_page_high_get_info(&total_pages, &free_pages);
kinfo.totalhigh = total_pages;
kinfo.freehigh = free_pages;
kinfo.mem_unit = ARCH_PAGE_SIZE;
if (lwp_put_to_user(info, &kinfo, sizeof(struct sysinfo)) != sizeof(struct sysinfo))
{
return -EFAULT;
}
return 0;
#else
return -1;
#endif
}
sysret_t sys_sched_setparam(pid_t tid, void *param)
{
struct sched_param *sched_param = RT_NULL;
rt_thread_t thread;
int ret = -1;
if (!lwp_user_accessable(param, sizeof(struct sched_param)))
{
return -EFAULT;
}
sched_param = kmem_get(sizeof(struct sched_param));
if (sched_param == RT_NULL)
{
return -ENOMEM;
}
if (lwp_get_from_user(sched_param, param, sizeof(struct sched_param)) != sizeof(struct sched_param))
{
kmem_put(sched_param);
return -EINVAL;
}
thread = lwp_tid_get_thread_and_inc_ref(tid);
if (thread)
{
ret = rt_thread_control(thread, RT_THREAD_CTRL_CHANGE_PRIORITY, (void *)&sched_param->sched_priority);
}
lwp_tid_dec_ref(thread);
kmem_put(sched_param);
return ret;
}
sysret_t sys_sched_yield(void)
{
rt_thread_yield();
return 0;
}
sysret_t sys_sched_getparam(const pid_t tid, void *param)
{
struct sched_param *sched_param = RT_NULL;
rt_thread_t thread;
int ret = -1;
if (!lwp_user_accessable(param, sizeof(struct sched_param)))
{
return -EFAULT;
}
sched_param = kmem_get(sizeof(struct sched_param));
if (sched_param == RT_NULL)
{
return -ENOMEM;
}
thread = lwp_tid_get_thread_and_inc_ref(tid);
if (thread)
{
sched_param->sched_priority = RT_SCHED_PRIV(thread).current_priority;
ret = 0;
}
lwp_tid_dec_ref(thread);
lwp_put_to_user((void *)param, sched_param, sizeof(struct sched_param));
kmem_put(sched_param);
return ret;
}
sysret_t sys_sched_get_priority_max(int policy)
{
if(policy < 0)
{
SET_ERRNO(EINVAL);
return -rt_get_errno();
}
return RT_THREAD_PRIORITY_MAX;
}
sysret_t sys_sched_get_priority_min(int policy)
{
if(policy < 0)
{
SET_ERRNO(EINVAL);
return -rt_get_errno();
}
return 0;
}
sysret_t sys_sched_setscheduler(int tid, int policy, void *param)
{
sysret_t ret;
struct sched_param *sched_param = RT_NULL;
rt_thread_t thread = RT_NULL;
if (!lwp_user_accessable(param, sizeof(struct sched_param)))
{
return -EFAULT;
}
sched_param = kmem_get(sizeof(struct sched_param));
if (sched_param == RT_NULL)
{
return -ENOMEM;
}
if (lwp_get_from_user(sched_param, param, sizeof(struct sched_param)) != sizeof(struct sched_param))
{
kmem_put(sched_param);
return -EINVAL;
}
thread = lwp_tid_get_thread_and_inc_ref(tid);
ret = rt_thread_control(thread, RT_THREAD_CTRL_CHANGE_PRIORITY, (void *)&sched_param->sched_priority);
lwp_tid_dec_ref(thread);
kmem_put(sched_param);
return ret;
}
sysret_t sys_sched_getscheduler(int tid)
{
rt_thread_t thread = RT_NULL;
int rtn;
thread = lwp_tid_get_thread_and_inc_ref(tid);
lwp_tid_dec_ref(thread);
if (thread)
{
rtn = SCHED_RR;
}
else
{
rtn = -ESRCH;
}
return rtn;
}
sysret_t sys_fsync(int fd)
{
int res = fsync(fd);
if (res < 0)
res = rt_get_errno();
return res;
}
mqd_t sys_mq_open(const char *name, int flags, mode_t mode, struct mq_attr *attr)
{
mqd_t mqdes;
sysret_t ret = 0;
#ifdef ARCH_MM_MMU
char *kname = RT_NULL;
rt_size_t len = 0;
struct mq_attr attr_k;
len = lwp_user_strlen(name);
if (!len)
return (mqd_t)-EINVAL;
kname = (char *)kmem_get(len + 1);
if (!kname)
return (mqd_t)-ENOMEM;
if (attr == NULL)
{
attr_k.mq_maxmsg = 10;
attr_k.mq_msgsize = 8192;
attr_k.mq_flags = 0;
attr = &attr_k;
}
else
{
if (!lwp_get_from_user(&attr_k, (void *)attr, sizeof(struct mq_attr)))
return -EINVAL;
}
lwp_get_from_user(kname, (void *)name, len + 1);
mqdes = mq_open(kname, flags, mode, &attr_k);
if (mqdes == -1)
{
ret = GET_ERRNO();
}
lwp_put_to_user(attr, &attr_k, sizeof(struct mq_attr));
kmem_put(kname);
#else
mqdes = mq_open(name, flags, mode, attr);
#endif
if (mqdes == -1)
return (mqd_t)ret;
else
return mqdes;
}
sysret_t sys_mq_unlink(const char *name)
{
int ret = 0;
#ifdef ARCH_MM_MMU
char *kname = RT_NULL;
rt_size_t len = 0;
len = lwp_user_strlen(name);
if (!len)
return -EINVAL;
kname = (char *)kmem_get(len + 1);
if (!kname)
return -ENOMEM;
lwp_get_from_user(kname, (void *)name, len + 1);
ret = mq_unlink(kname);
if (ret < 0)
{
ret = GET_ERRNO();
}
kmem_put(kname);
return ret;
#else
ret = mq_unlink(name);
return (ret < 0 ? GET_ERRNO() : ret);
#endif
}
sysret_t sys_mq_timedsend(mqd_t mqd, const char *msg, size_t len, unsigned prio, const struct timespec *at)
{
int ret = 0;
#ifdef ARCH_MM_MMU
char *kmsg = RT_NULL;
struct timespec at_k;
kmsg = (char *)kmem_get(len + 1);
if (!kmsg)
return -ENOMEM;
lwp_get_from_user(&at_k, (void *)at, sizeof(struct timespec));
lwp_get_from_user(kmsg, (void *)msg, len + 1);
ret = mq_timedsend(mqd, kmsg, len, prio, &at_k);
if (ret < 0)
{
ret = GET_ERRNO();
}
kmem_put(kmsg);
return ret;
#else
ret = mq_timedsend(mqd, msg, len, prio, at);
return (ret < 0 ? GET_ERRNO() : ret);
#endif
}
sysret_t sys_mq_timedreceive(mqd_t mqd, char *restrict msg, size_t len, unsigned *restrict prio, const struct timespec *restrict at)
{
int ret = 0;
#ifdef ARCH_MM_MMU
char *restrict kmsg = RT_NULL;
struct timespec at_k;
kmsg = (char *restrict)kmem_get(len + 1);
if (!kmsg)
return -ENOMEM;
lwp_get_from_user(kmsg, (void *)msg, len + 1);
if (at == RT_NULL)
{
ret = mq_timedreceive(mqd, kmsg, len, prio, RT_NULL);
}
else
{
if (!lwp_get_from_user(&at_k, (void *)at, sizeof(struct timespec)))
return -EINVAL;
ret = mq_timedreceive(mqd, kmsg, len, prio, &at_k);
}
if (ret > 0)
lwp_put_to_user(msg, kmsg, len + 1);
if (ret < 0)
{
ret = GET_ERRNO();
}
kmem_put(kmsg);
return ret;
#else
ret = mq_timedreceive(mqd, msg, len, prio, at);
return (ret < 0 ? GET_ERRNO() : ret);
#endif
}
sysret_t sys_mq_notify(mqd_t mqd, const struct sigevent *sev)
{
int ret = 0;
#ifdef ARCH_MM_MMU
struct sigevent sev_k;
lwp_get_from_user(&sev_k, (void *)sev, sizeof(struct timespec));
ret = mq_notify(mqd, &sev_k);
#else
ret = mq_notify(mqd, sev);
#endif
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_mq_getsetattr(mqd_t mqd, const struct mq_attr *restrict new, struct mq_attr *restrict old)
{
int ret = 0;
#ifdef ARCH_MM_MMU
size_t size = sizeof(struct mq_attr);
struct mq_attr *restrict knew = NULL;
struct mq_attr *restrict kold = NULL;
if (new != RT_NULL)
{
if (!lwp_user_accessable((void *)new, size))
return -EFAULT;
knew = kmem_get(size);
if (!knew)
return -ENOMEM;
lwp_get_from_user(knew, (void *)new, size);
}
if (!lwp_user_accessable((void *)old, size))
return -EFAULT;
kold = kmem_get(size);
if (!kold)
return -ENOMEM;
lwp_get_from_user(kold, (void *)old, size);
ret = mq_setattr(mqd, knew, kold);
if (ret != -1)
lwp_put_to_user(old, kold, size);
if (ret < 0)
{
ret = GET_ERRNO();
}
kmem_put(kold);
if (new != RT_NULL)
kmem_put(knew);
return ret;
#else
ret = mq_setattr(mqd, new, old);
return (ret < 0 ? GET_ERRNO() : ret);
#endif
}
sysret_t sys_mq_close(mqd_t mqd)
{
int ret = 0;
#ifdef ARCH_MM_MMU
ret = mq_close(mqd);
#else
ret = mq_close(mqd);
#endif
return (ret < 0 ? GET_ERRNO() : ret);
}
#define ICACHE (1<<0)
#define DCACHE (1<<1)
#define BCACHE (ICACHE|DCACHE)
rt_weak sysret_t sys_cacheflush(void *addr, int size, int cache)
{
if (!lwp_user_accessable(addr, size))
return -EFAULT;
if (((size_t)addr < (size_t)addr + size) &&
((size_t)addr >= USER_VADDR_START) &&
((size_t)addr + size < USER_VADDR_TOP))
{
if ((cache & DCACHE))
{
rt_hw_cpu_dcache_clean_and_invalidate(addr, size);
}
if ((cache & ICACHE))
{
rt_hw_cpu_icache_invalidate(addr, size);
}
return 0;
}
return -EFAULT;
}
sysret_t sys_uname(struct utsname *uts)
{
struct utsname utsbuff = {0};
int ret = 0;
const char *machine;
if (!lwp_user_accessable((void *)uts, sizeof(struct utsname)))
{
return -EFAULT;
}
rt_strncpy(utsbuff.sysname, "RT-Thread", sizeof(utsbuff.sysname));
utsbuff.nodename[0] = '\0';
ret = rt_snprintf(utsbuff.release, sizeof(utsbuff.release), "%u.%u.%u",
RT_VERSION_MAJOR, RT_VERSION_MINOR, RT_VERSION_PATCH);
if (ret < 0) {
return -EIO;
}
ret = rt_snprintf(utsbuff.version, sizeof(utsbuff.version), "RT-Thread %u.%u.%u %s %s",
RT_VERSION_MAJOR, RT_VERSION_MINOR, RT_VERSION_PATCH, __DATE__, __TIME__);
if (ret < 0) {
return -EIO;
}
machine = rt_hw_cpu_arch();
rt_strncpy(utsbuff.machine, machine, sizeof(utsbuff.machine));
utsbuff.domainname[0] = '\0';
lwp_put_to_user(uts, &utsbuff, sizeof utsbuff);
return 0;
}
sysret_t sys_statfs(const char *path, struct statfs *buf)
{
int ret = 0;
size_t len;
size_t copy_len;
char *copy_path;
struct statfs statfsbuff = {0};
if (!lwp_user_accessable((void *)buf, sizeof(struct statfs)))
{
return -EFAULT;
}
len = lwp_user_strlen(path);
if (len <= 0)
{
return -EFAULT;
}
copy_path = (char*)rt_malloc(len + 1);
if (!copy_path)
{
return -ENOMEM;
}
copy_len = lwp_get_from_user(copy_path, (void*)path, len);
if (copy_len == 0)
{
rt_free(copy_path);
return -EFAULT;
}
copy_path[copy_len] = '\0';
ret = _SYS_WRAP(statfs(copy_path, &statfsbuff));
rt_free(copy_path);
if (ret == 0)
{
lwp_put_to_user(buf, &statfsbuff, sizeof statfsbuff);
}
return ret;
}
sysret_t sys_statfs64(const char *path, size_t sz, struct statfs *buf)
{
int ret = 0;
size_t len;
size_t copy_len;
char *copy_path;
struct statfs statfsbuff = {0};
if (!lwp_user_accessable((void *)buf, sizeof(struct statfs)))
{
return -EFAULT;
}
if (sz != sizeof(struct statfs)) {
return -EINVAL;
}
len = lwp_user_strlen(path);
if (len <= 0)
{
return -EFAULT;
}
copy_path = (char*)rt_malloc(len + 1);
if (!copy_path)
{
return -ENOMEM;
}
copy_len = lwp_get_from_user(copy_path, (void*)path, len);
if (copy_len == 0)
{
rt_free(copy_path);
return -EFAULT;
}
copy_path[copy_len] = '\0';
ret = _SYS_WRAP(statfs(copy_path, &statfsbuff));
rt_free(copy_path);
if (ret == 0)
{
lwp_put_to_user(buf, &statfsbuff, sizeof statfsbuff);
}
return ret;
}
sysret_t sys_fstatfs(int fd, struct statfs *buf)
{
int ret = 0;
struct statfs statfsbuff = {0};
if (!lwp_user_accessable((void *)buf, sizeof(struct statfs)))
{
return -EFAULT;
}
ret = _SYS_WRAP(fstatfs(fd, &statfsbuff));
if (ret == 0)
{
lwp_put_to_user(buf, &statfsbuff, sizeof statfsbuff);
}
return ret;
}
sysret_t sys_fstatfs64(int fd, size_t sz, struct statfs *buf)
{
int ret = 0;
struct statfs statfsbuff = {0};
if (!lwp_user_accessable((void *)buf, sizeof(struct statfs)))
{
return -EFAULT;
}
if (sz != sizeof(struct statfs)) {
return -EINVAL;
}
ret = _SYS_WRAP(fstatfs(fd, &statfsbuff));
if (ret == 0)
{
lwp_put_to_user(buf, &statfsbuff, sizeof statfsbuff);
}
return ret;
}
sysret_t sys_mount(char *source, char *target,
char *filesystemtype,
unsigned long mountflags, void *data)
{
char *copy_source;
char *copy_target;
char *copy_filesystemtype;
size_t len_source, copy_len_source;
size_t len_target, copy_len_target;
size_t len_filesystemtype, copy_len_filesystemtype;
char *tmp = NULL;
int ret = 0;
struct stat buf = {0};
len_source = lwp_user_strlen(source);
if (len_source <= 0)
return -EINVAL;
len_target = lwp_user_strlen(target);
if (len_target <= 0)
return -EINVAL;
len_filesystemtype = lwp_user_strlen(filesystemtype);
if (len_filesystemtype <= 0)
return -EINVAL;
copy_source = (char*)rt_malloc(len_source + 1 + len_target + 1 + len_filesystemtype + 1);
if (!copy_source)
{
return -ENOMEM;
}
copy_target = copy_source + len_source + 1;
copy_filesystemtype = copy_target + len_target + 1;
copy_len_source = lwp_get_from_user(copy_source, source, len_source);
copy_source[copy_len_source] = '\0';
copy_len_target = lwp_get_from_user(copy_target, target, len_target);
copy_target[copy_len_target] = '\0';
copy_len_filesystemtype = lwp_get_from_user(copy_filesystemtype, filesystemtype, len_filesystemtype);
copy_filesystemtype[copy_len_filesystemtype] = '\0';
if (strcmp(copy_filesystemtype, "nfs") == 0)
{
tmp = copy_source;
copy_source = NULL;
}
if (strcmp(copy_filesystemtype, "tmp") == 0)
{
copy_source = NULL;
}
if (copy_source && stat(copy_source, &buf) && S_ISBLK(buf.st_mode))
{
char *dev_fullpath = dfs_normalize_path(RT_NULL, copy_source);
RT_ASSERT(rt_strncmp(dev_fullpath, "/dev/", sizeof("/dev/") - 1) == 0);
ret = dfs_mount(dev_fullpath + sizeof("/dev/") - 1, copy_target, copy_filesystemtype, 0, tmp);
if (ret < 0)
{
ret = -rt_get_errno();
}
rt_free(copy_source);
rt_free(dev_fullpath);
}
else
{
ret = dfs_mount(copy_source, copy_target, copy_filesystemtype, 0, tmp);
if (ret < 0)
{
ret = -rt_get_errno();
}
rt_free(copy_source);
}
return ret;
}
sysret_t sys_umount2(char *__special_file, int __flags)
{
char *copy_special_file;
size_t len_special_file, copy_len_special_file;
int ret = 0;
len_special_file = lwp_user_strlen(__special_file);
if (len_special_file <= 0)
{
return -EFAULT;
}
copy_special_file = (char*)rt_malloc(len_special_file + 1);
if (!copy_special_file)
{
return -ENOMEM;
}
copy_len_special_file = lwp_get_from_user(copy_special_file, __special_file, len_special_file);
copy_special_file[copy_len_special_file] = '\0';
ret = dfs_unmount(copy_special_file);
rt_free(copy_special_file);
return ret;
}
sysret_t sys_link(const char *existing, const char *new)
{
int ret = -1;
int err = 0;
#ifdef RT_USING_DFS_V2
#ifdef ARCH_MM_MMU
int len = 0;
char *kexisting = RT_NULL;
char *knew = RT_NULL;
len = lwp_user_strlen(existing);
if (len <= 0)
{
return -EFAULT;
}
kexisting = (char *)kmem_get(len + 1);
if (!kexisting)
{
return -ENOMEM;
}
if (lwp_get_from_user(kexisting, (void *)existing, len + 1) != (len + 1))
{
kmem_put(kexisting);
return -EINVAL;
}
len = lwp_user_strlen(new);
if (len <= 0)
{
kmem_put(kexisting);
return -EFAULT;
}
knew = (char *)kmem_get(len + 1);
if (!knew)
{
kmem_put(kexisting);
return -ENOMEM;
}
if (lwp_get_from_user(knew, (void *)new, len + 1) != (len + 1))
{
kmem_put(knew);
kmem_put(kexisting);
return -EINVAL;
}
ret = dfs_file_link(kexisting, knew);
if(ret < 0)
{
err = GET_ERRNO();
}
kmem_put(knew);
kmem_put(kexisting);
#else
ret = dfs_file_link(existing, new);
#endif
#else
SET_ERRNO(EFAULT);
err = GET_ERRNO();
#endif
return (err < 0 ? err : ret);
}
sysret_t sys_symlink(const char *existing, const char *new)
{
int ret = -1;
int err = 0 ;
#ifdef ARCH_MM_MMU
ret = lwp_user_strlen(existing);
if (ret <= 0)
{
return -EFAULT;
}
ret = lwp_user_strlen(new);
if (ret <= 0)
{
return -EFAULT;
}
#endif
#ifdef RT_USING_DFS_V2
ret = dfs_file_symlink(existing, new);
if(ret < 0)
{
err = GET_ERRNO();
}
#else
SET_ERRNO(EFAULT);
#endif
return (err < 0 ? err : ret);
}
sysret_t sys_eventfd2(unsigned int count, int flags)
{
int ret;
ret = eventfd(count, flags);
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_epoll_create1(int flags)
{
int ret;
ret = epoll_create(flags);
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_epoll_ctl(int fd, int op, int fd2, struct epoll_event *ev)
{
int ret = 0;
struct epoll_event *kev = RT_NULL;
if (ev)
{
if (!lwp_user_accessable((void *)ev, sizeof(struct epoll_event)))
return -EFAULT;
kev = kmem_get(sizeof(struct epoll_event));
if (kev == RT_NULL)
{
return -ENOMEM;
}
if (lwp_get_from_user(kev, ev, sizeof(struct epoll_event)) != sizeof(struct epoll_event))
{
kmem_put(kev);
return -EINVAL;
}
ret = epoll_ctl(fd, op, fd2, kev);
kmem_put(kev);
}
else
{
ret = epoll_ctl(fd, op, fd2, RT_NULL);
}
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_epoll_pwait(int fd,
struct epoll_event *ev,
int cnt,
int to,
const sigset_t *sigs,
unsigned long sigsetsize)
{
int ret = 0;
struct epoll_event *kev = RT_NULL;
sigset_t *ksigs = RT_NULL;
if (!lwp_user_accessable((void *)ev, cnt * sizeof(struct epoll_event)))
return -EFAULT;
kev = kmem_get(cnt * sizeof(struct epoll_event));
if (kev == RT_NULL)
{
return -ENOMEM;
}
if (sigs != RT_NULL)
{
if (!lwp_user_accessable((void *)sigs, sizeof(sigset_t)))
{
kmem_put(kev);
return -EFAULT;
}
ksigs = kmem_get(sizeof(sigset_t));
if (ksigs == RT_NULL)
{
kmem_put(kev);
return -ENOMEM;
}
if (lwp_get_from_user(ksigs, (void *)sigs, sizeof(sigset_t)) != sizeof(sigset_t))
{
kmem_put(kev);
kmem_put(ksigs);
return -EINVAL;
}
}
ret = epoll_pwait(fd, kev, cnt, to, ksigs);
if (ret > 0)
{
lwp_put_to_user((void *)ev, kev, ret * sizeof(struct epoll_event));
}
if (sigs != RT_NULL)
kmem_put(ksigs);
kmem_put(kev);
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_ftruncate(int fd, size_t length)
{
int ret;
ret = ftruncate(fd, length);
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_utimensat(int __fd, const char *__path, const struct timespec __times[2], int __flags)
{
#ifdef RT_USING_DFS_V2
#ifdef ARCH_MM_MMU
int ret = -1;
rt_size_t len = 0;
char *kpath = RT_NULL;
len = lwp_user_strlen(__path);
if (len <= 0)
{
return -EINVAL;
}
kpath = (char *)kmem_get(len + 1);
if (!kpath)
{
return -ENOMEM;
}
lwp_get_from_user(kpath, (void *)__path, len + 1);
ret = utimensat(__fd, kpath, __times, __flags);
kmem_put(kpath);
return ret;
#else
if (!lwp_user_accessable((void *)__path, 1))
{
return -EFAULT;
}
int ret = utimensat(__fd, __path, __times, __flags);
return ret;
#endif
#else
return -1;
#endif
}
sysret_t sys_chmod(const char *pathname, mode_t mode)
{
char *copy_file;
size_t len_file, copy_len_file;
struct dfs_attr attr = {0};
int ret = 0;
len_file = lwp_user_strlen(pathname);
if (len_file <= 0)
{
return -EFAULT;
}
copy_file = (char*)rt_malloc(len_file + 1);
if (!copy_file)
{
return -ENOMEM;
}
copy_len_file = lwp_get_from_user(copy_file, (void *)pathname, len_file);
attr.st_mode = mode;
attr.ia_valid |= ATTR_MODE_SET;
copy_file[copy_len_file] = '\0';
ret = dfs_file_setattr(copy_file, &attr);
rt_free(copy_file);
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_chown(const char *pathname, uid_t owner, gid_t group)
{
char *copy_file;
size_t len_file, copy_len_file;
struct dfs_attr attr = {0};
int ret = 0;
len_file = lwp_user_strlen(pathname);
if (len_file <= 0)
{
return -EFAULT;
}
copy_file = (char*)rt_malloc(len_file + 1);
if (!copy_file)
{
return -ENOMEM;
}
copy_len_file = lwp_get_from_user(copy_file, (void *)pathname, len_file);
if(owner >= 0)
{
attr.st_uid = owner;
attr.ia_valid |= ATTR_UID_SET;
}
if(group >= 0)
{
attr.st_gid = group;
attr.ia_valid |= ATTR_GID_SET;
}
copy_file[copy_len_file] = '\0';
ret = dfs_file_setattr(copy_file, &attr);
rt_free(copy_file);
return (ret < 0 ? GET_ERRNO() : ret);
}
#include <sys/reboot.h>
sysret_t sys_reboot(int magic, int magic2, int type)
{
sysret_t rc;
switch (type)
{
/* TODO add software poweroff protocols */
case RB_AUTOBOOT:
case RB_POWER_OFF:
rt_hw_cpu_reset();
break;
default:
rc = -ENOSYS;
}
return rc;
}
ssize_t sys_pread64(int fd, void *buf, int size, size_t offset)
#ifdef RT_USING_DFS_V2
{
ssize_t pread(int fd, void *buf, size_t len, size_t offset);
#ifdef ARCH_MM_MMU
ssize_t ret = -1;
void *kmem = RT_NULL;
if (!size)
{
return -EINVAL;
}
if (!lwp_user_accessable((void *)buf, size))
{
return -EFAULT;
}
kmem = kmem_get(size);
if (!kmem)
{
return -ENOMEM;
}
ret = pread(fd, kmem, size, offset);
if (ret > 0)
{
lwp_put_to_user(buf, kmem, ret);
}
if (ret < 0)
{
ret = GET_ERRNO();
}
kmem_put(kmem);
return ret;
#else
if (!lwp_user_accessable((void *)buf, size))
{
return -EFAULT;
}
ssize_t ret = pread(fd, kmem, size, offset);
return (ret < 0 ? GET_ERRNO() : ret);
#endif
}
#else
{
ssize_t ret = -ENOSYS;
return (ret < 0 ? GET_ERRNO() : ret);
}
#endif
ssize_t sys_pwrite64(int fd, void *buf, int size, size_t offset)
#ifdef RT_USING_DFS_V2
{
ssize_t pwrite(int fd, const void *buf, size_t len, size_t offset);
#ifdef ARCH_MM_MMU
ssize_t ret = -1;
void *kmem = RT_NULL;
if (!size)
{
return -EINVAL;
}
if (!lwp_user_accessable((void *)buf, size))
{
return -EFAULT;
}
kmem = kmem_get(size);
if (!kmem)
{
return -ENOMEM;
}
lwp_get_from_user(kmem, (void *)buf, size);
ret = pwrite(fd, kmem, size, offset);
if (ret < 0)
{
ret = GET_ERRNO();
}
kmem_put(kmem);
return ret;
#else
if (!lwp_user_accessable((void *)buf, size))
{
return -EFAULT;
}
ssize_t ret = pwrite(fd, kmem, size, offset);
return (ret < 0 ? GET_ERRNO() : ret);
#endif
}
#else
{
ssize_t ret = -ENOSYS;
return (ret < 0 ? GET_ERRNO() : ret);
}
#endif
sysret_t sys_timerfd_create(int clockid, int flags)
{
int ret;
ret = timerfd_create(clockid, flags);
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_timerfd_settime(int fd, int flags, const struct itimerspec *new, struct itimerspec *old)
{
int ret = -1;
struct itimerspec *knew = RT_NULL;
struct itimerspec *kold = RT_NULL;
if (new == RT_NULL)
return -EINVAL;
if (!lwp_user_accessable((void *)new, sizeof(struct itimerspec)))
{
return -EFAULT;
}
knew = kmem_get(sizeof(struct itimerspec));
if (knew)
{
lwp_get_from_user(knew, (void*)new, sizeof(struct itimerspec));
if (old)
{
if (!lwp_user_accessable((void *)old, sizeof(struct itimerspec)))
{
kmem_put(knew);
return -EFAULT;
}
kold = kmem_get(sizeof(struct itimerspec));
if (kold == RT_NULL)
{
kmem_put(knew);
return -ENOMEM;
}
}
ret = timerfd_settime(fd, flags, knew, kold);
if (old)
{
lwp_put_to_user(old, kold, sizeof(*kold));
kmem_put(kold);
}
kmem_put(knew);
}
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_timerfd_gettime(int fd, struct itimerspec *cur)
{
int ret = -1;
struct itimerspec *kcur;
if (cur == RT_NULL)
return -EINVAL;
if (!lwp_user_accessable((void *)cur, sizeof(struct itimerspec)))
{
return -EFAULT;
}
kcur = kmem_get(sizeof(struct itimerspec));
if (kcur)
{
lwp_get_from_user(kcur, cur, sizeof(struct itimerspec));
ret = timerfd_gettime(fd, kcur);
lwp_put_to_user(cur, kcur, sizeof(struct itimerspec));
kmem_put(kcur);
}
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_signalfd(int fd, const sigset_t *mask, int flags)
{
int ret = 0;
sigset_t *kmask = RT_NULL;
#ifdef RT_USING_MUSLLIBC
if (mask == RT_NULL)
return -EINVAL;
if (!lwp_user_accessable((void *)mask, sizeof(struct itimerspec)))
{
return -EFAULT;
}
kmask = kmem_get(sizeof(struct itimerspec));
if (kmask)
{
if (lwp_get_from_user(kmask, (void *)mask, sizeof(struct itimerspec)) != sizeof(struct itimerspec))
{
kmem_put(kmask);
return -EFAULT;
}
ret = signalfd(fd, mask, flags);
kmem_put(kmask);
}
#endif
return (ret < 0 ? GET_ERRNO() : ret);
}
sysret_t sys_memfd_create()
{
return 0;
}
sysret_t sys_setitimer(int which, const struct itimerspec *restrict new, struct itimerspec *restrict old)
{
sysret_t rc = 0;
rt_lwp_t lwp = lwp_self();
struct itimerspec new_value_k;
struct itimerspec old_value_k;
if (lwp_get_from_user(&new_value_k, (void *)new, sizeof(*new)) != sizeof(*new))
{
return -EFAULT;
}
rc = lwp_signal_setitimer(lwp, which, &new_value_k, &old_value_k);
if (old && lwp_put_to_user(old, (void *)&old_value_k, sizeof old_value_k) != sizeof old_value_k)
return -EFAULT;
return rc;
}
sysret_t sys_set_robust_list(struct robust_list_head *head, size_t len)
{
if (len != sizeof(*head))
return -EINVAL;
rt_thread_self()->robust_list = head;
return 0;
}
sysret_t sys_get_robust_list(int tid, struct robust_list_head **head_ptr, size_t *len_ptr)
{
rt_thread_t thread;
size_t len;
struct robust_list_head *head;
if (!lwp_user_accessable((void *)head_ptr, sizeof(struct robust_list_head *)))
{
return -EFAULT;
}
if (!lwp_user_accessable((void *)len_ptr, sizeof(size_t)))
{
return -EFAULT;
}
if (tid == 0)
{
thread = rt_thread_self();
head = thread->robust_list;
}
else
{
thread = lwp_tid_get_thread_and_inc_ref(tid);
if (thread)
{
head = thread->robust_list;
lwp_tid_dec_ref(thread);
}
else
{
return -ESRCH;
}
}
len = sizeof(*(head));
if (!lwp_put_to_user(len_ptr, &len, sizeof(size_t)))
return -EFAULT;
if (!lwp_put_to_user(head_ptr, &head, sizeof(struct robust_list_head *)))
return -EFAULT;
return 0;
}
const static struct rt_syscall_def func_table[] =
{
SYSCALL_SIGN(sys_exit), /* 01 */
SYSCALL_SIGN(sys_read),
SYSCALL_SIGN(sys_write),
SYSCALL_SIGN(sys_lseek),
SYSCALL_SIGN(sys_open), /* 05 */
SYSCALL_SIGN(sys_close),
SYSCALL_SIGN(sys_ioctl),
SYSCALL_SIGN(sys_fstat),
SYSCALL_SIGN(sys_poll),
SYSCALL_SIGN(sys_nanosleep), /* 10 */
SYSCALL_SIGN(sys_gettimeofday),
SYSCALL_SIGN(sys_settimeofday),
SYSCALL_SIGN(sys_exec),
SYSCALL_SIGN(sys_kill),
SYSCALL_SIGN(sys_getpid), /* 15 */
SYSCALL_SIGN(sys_getpriority),
SYSCALL_SIGN(sys_setpriority),
SYSCALL_SIGN(sys_sem_create),
SYSCALL_SIGN(sys_sem_delete),
SYSCALL_SIGN(sys_sem_take), /* 20 */
SYSCALL_SIGN(sys_sem_release),
SYSCALL_SIGN(sys_mutex_create),
SYSCALL_SIGN(sys_mutex_delete),
SYSCALL_SIGN(sys_mutex_take),
SYSCALL_SIGN(sys_mutex_release), /* 25 */
SYSCALL_SIGN(sys_event_create),
SYSCALL_SIGN(sys_event_delete),
SYSCALL_SIGN(sys_event_send),
SYSCALL_SIGN(sys_event_recv),
SYSCALL_SIGN(sys_mb_create), /* 30 */
SYSCALL_SIGN(sys_mb_delete),
SYSCALL_SIGN(sys_mb_send),
SYSCALL_SIGN(sys_mb_send_wait),
SYSCALL_SIGN(sys_mb_recv),
SYSCALL_SIGN(sys_mq_create), /* 35 */
SYSCALL_SIGN(sys_mq_delete),
SYSCALL_SIGN(sys_mq_send),
SYSCALL_SIGN(sys_mq_urgent),
SYSCALL_SIGN(sys_mq_recv),
SYSCALL_SIGN(sys_thread_create), /* 40 */
SYSCALL_SIGN(sys_thread_delete),
SYSCALL_SIGN(sys_thread_startup),
SYSCALL_SIGN(sys_thread_self),
SYSCALL_SIGN(sys_channel_open),
SYSCALL_SIGN(sys_channel_close), /* 45 */
SYSCALL_SIGN(sys_channel_send),
SYSCALL_SIGN(sys_channel_send_recv_timeout),
SYSCALL_SIGN(sys_channel_reply),
SYSCALL_SIGN(sys_channel_recv_timeout),
SYSCALL_SIGN(sys_enter_critical), /* 50 */
SYSCALL_SIGN(sys_exit_critical),
SYSCALL_USPACE(SYSCALL_SIGN(sys_brk)),
SYSCALL_USPACE(SYSCALL_SIGN(sys_mmap2)),
SYSCALL_USPACE(SYSCALL_SIGN(sys_munmap)),
#ifdef ARCH_MM_MMU
SYSCALL_USPACE(SYSCALL_SIGN(sys_shmget)), /* 55 */
SYSCALL_USPACE(SYSCALL_SIGN(sys_shmrm)),
SYSCALL_USPACE(SYSCALL_SIGN(sys_shmat)),
SYSCALL_USPACE(SYSCALL_SIGN(sys_shmdt)),
#else
#ifdef RT_LWP_USING_SHM
SYSCALL_SIGN(sys_shm_alloc), /* 55 */
SYSCALL_SIGN(sys_shm_free),
SYSCALL_SIGN(sys_shm_retain),
SYSCALL_SIGN(sys_notimpl),
#else
SYSCALL_SIGN(sys_notimpl), /* 55 */
SYSCALL_SIGN(sys_notimpl),
SYSCALL_SIGN(sys_notimpl),
SYSCALL_SIGN(sys_notimpl),
#endif /* RT_LWP_USING_SHM */
#endif /* ARCH_MM_MMU */
SYSCALL_SIGN(sys_device_init),
SYSCALL_SIGN(sys_device_register), /* 60 */
SYSCALL_SIGN(sys_device_control),
SYSCALL_SIGN(sys_device_find),
SYSCALL_SIGN(sys_device_open),
SYSCALL_SIGN(sys_device_close),
SYSCALL_SIGN(sys_device_read), /* 65 */
SYSCALL_SIGN(sys_device_write),
SYSCALL_SIGN(sys_stat),
SYSCALL_SIGN(sys_thread_find),
SYSCALL_NET(SYSCALL_SIGN(sys_accept)),
SYSCALL_NET(SYSCALL_SIGN(sys_bind)), /* 70 */
SYSCALL_NET(SYSCALL_SIGN(sys_shutdown)),
SYSCALL_NET(SYSCALL_SIGN(sys_getpeername)),
SYSCALL_NET(SYSCALL_SIGN(sys_getsockname)),
SYSCALL_NET(SYSCALL_SIGN(sys_getsockopt)),
SYSCALL_NET(SYSCALL_SIGN(sys_setsockopt)), /* 75 */
SYSCALL_NET(SYSCALL_SIGN(sys_connect)),
SYSCALL_NET(SYSCALL_SIGN(sys_listen)),
SYSCALL_NET(SYSCALL_SIGN(sys_recv)),
SYSCALL_NET(SYSCALL_SIGN(sys_recvfrom)),
SYSCALL_NET(SYSCALL_SIGN(sys_send)), /* 80 */
SYSCALL_NET(SYSCALL_SIGN(sys_sendto)),
SYSCALL_NET(SYSCALL_SIGN(sys_socket)),
SYSCALL_NET(SYSCALL_SIGN(sys_closesocket)),
SYSCALL_NET(SYSCALL_SIGN(sys_getaddrinfo)),
SYSCALL_NET(SYSCALL_SIGN(sys_gethostbyname2_r)), /* 85 */
SYSCALL_NET(SYSCALL_SIGN(sys_sendmsg)),
SYSCALL_NET(SYSCALL_SIGN(sys_recvmsg)),
SYSCALL_SIGN(sys_notimpl), //network,
SYSCALL_SIGN(sys_notimpl), //network,
SYSCALL_SIGN(sys_notimpl), //network, /* 90 */
SYSCALL_SIGN(sys_notimpl), //network,
SYSCALL_SIGN(sys_notimpl), //network,
SYSCALL_SIGN(sys_notimpl), //network,
#ifdef RT_USING_DFS
SYSCALL_SIGN(sys_select),
#else
SYSCALL_SIGN(sys_notimpl),
#endif
SYSCALL_SIGN(sys_notimpl), //SYSCALL_SIGN(sys_hw_interrupt_disable), /* 95 */
SYSCALL_SIGN(sys_notimpl), //SYSCALL_SIGN(sys_hw_interrupt_enable),
SYSCALL_SIGN(sys_tick_get),
SYSCALL_SIGN(sys_exit_group),
SYSCALL_SIGN(sys_notimpl), //rt_delayed_work_init,
SYSCALL_SIGN(sys_notimpl), //rt_work_submit, /* 100 */
SYSCALL_SIGN(sys_notimpl), //rt_wqueue_wakeup,
SYSCALL_SIGN(sys_thread_mdelay),
SYSCALL_SIGN(sys_sigaction),
SYSCALL_SIGN(sys_sigprocmask),
SYSCALL_SIGN(sys_tkill), /* 105 */
SYSCALL_SIGN(sys_thread_sigprocmask),
#ifdef ARCH_MM_MMU
SYSCALL_SIGN(sys_cacheflush),
SYSCALL_SIGN(sys_notimpl),
SYSCALL_SIGN(sys_notimpl),
#else
SYSCALL_SIGN(sys_notimpl),
SYSCALL_SIGN(sys_lwp_sighandler_set),
SYSCALL_SIGN(sys_thread_sighandler_set),
#endif
SYSCALL_SIGN(sys_waitpid), /* 110 */
SYSCALL_SIGN(sys_rt_timer_create),
SYSCALL_SIGN(sys_rt_timer_delete),
SYSCALL_SIGN(sys_rt_timer_start),
SYSCALL_SIGN(sys_rt_timer_stop),
SYSCALL_SIGN(sys_rt_timer_control), /* 115 */
SYSCALL_SIGN(sys_getcwd),
SYSCALL_SIGN(sys_chdir),
SYSCALL_SIGN(sys_unlink),
SYSCALL_SIGN(sys_mkdir),
SYSCALL_SIGN(sys_rmdir), /* 120 */
SYSCALL_SIGN(sys_getdents),
SYSCALL_SIGN(sys_get_errno),
#ifdef ARCH_MM_MMU
SYSCALL_SIGN(sys_set_thread_area),
SYSCALL_SIGN(sys_set_tid_address),
#else
SYSCALL_SIGN(sys_notimpl),
SYSCALL_SIGN(sys_notimpl),
#endif
SYSCALL_SIGN(sys_access), /* 125 */
SYSCALL_SIGN(sys_pipe),
SYSCALL_SIGN(sys_clock_settime),
SYSCALL_SIGN(sys_clock_gettime),
SYSCALL_SIGN(sys_clock_getres),
SYSCALL_USPACE(SYSCALL_SIGN(sys_clone)), /* 130 */
SYSCALL_USPACE(SYSCALL_SIGN(sys_futex)),
SYSCALL_SIGN(sys_notimpl), /* discarded: sys_pmutex */
SYSCALL_SIGN(sys_dup),
SYSCALL_SIGN(sys_dup2),
SYSCALL_SIGN(sys_rename), /* 135 */
SYSCALL_USPACE(SYSCALL_SIGN(sys_fork)),
SYSCALL_USPACE(SYSCALL_SIGN(sys_execve)),
SYSCALL_USPACE(SYSCALL_SIGN(sys_vfork)),
SYSCALL_SIGN(sys_gettid),
SYSCALL_SIGN(sys_prlimit64), /* 140 */
SYSCALL_SIGN(sys_getrlimit),
SYSCALL_SIGN(sys_setrlimit),
SYSCALL_SIGN(sys_setsid),
SYSCALL_SIGN(sys_getrandom),
SYSCALL_SIGN(sys_readlink), /* 145 */
SYSCALL_USPACE(SYSCALL_SIGN(sys_mremap)),
SYSCALL_USPACE(SYSCALL_SIGN(sys_madvise)),
SYSCALL_SIGN(sys_sched_setparam),
SYSCALL_SIGN(sys_sched_getparam),
SYSCALL_SIGN(sys_sched_get_priority_max), /* 150 */
SYSCALL_SIGN(sys_sched_get_priority_min),
SYSCALL_SIGN(sys_sched_setscheduler),
SYSCALL_SIGN(sys_sched_getscheduler),
SYSCALL_SIGN(sys_sched_setaffinity),
SYSCALL_SIGN(sys_fsync), /* 155 */
SYSCALL_SIGN(sys_clock_nanosleep),
SYSCALL_SIGN(sys_timer_create),
SYSCALL_SIGN(sys_timer_delete),
SYSCALL_SIGN(sys_timer_settime),
SYSCALL_SIGN(sys_timer_gettime), /* 160 */
SYSCALL_SIGN(sys_timer_getoverrun),
SYSCALL_SIGN(sys_mq_open),
SYSCALL_SIGN(sys_mq_unlink),
SYSCALL_SIGN(sys_mq_timedsend),
SYSCALL_SIGN(sys_mq_timedreceive), /* 165 */
SYSCALL_SIGN(sys_mq_notify),
SYSCALL_SIGN(sys_mq_getsetattr),
SYSCALL_SIGN(sys_mq_close),
SYSCALL_SIGN(sys_lstat),
SYSCALL_SIGN(sys_uname), /* 170 */
SYSCALL_SIGN(sys_statfs),
SYSCALL_SIGN(sys_statfs64),
SYSCALL_SIGN(sys_fstatfs),
SYSCALL_SIGN(sys_fstatfs64),
SYSCALL_SIGN(sys_openat), /* 175 */
SYSCALL_SIGN(sys_mount),
SYSCALL_SIGN(sys_umount2),
SYSCALL_SIGN(sys_link),
SYSCALL_SIGN(sys_symlink),
SYSCALL_SIGN(sys_sched_getaffinity), /* 180 */
SYSCALL_SIGN(sys_sysinfo),
SYSCALL_SIGN(sys_chmod),
SYSCALL_SIGN(sys_reboot),
SYSCALL_SIGN(sys_sched_yield),
SYSCALL_SIGN(sys_pread64), /* 185 */
SYSCALL_SIGN(sys_pwrite64),
SYSCALL_SIGN(sys_sigpending),
SYSCALL_SIGN(sys_sigtimedwait),
SYSCALL_SIGN(sys_notimpl),
SYSCALL_SIGN(sys_notimpl), /* 190 */
SYSCALL_SIGN(sys_eventfd2),
SYSCALL_SIGN(sys_epoll_create1),
SYSCALL_SIGN(sys_epoll_ctl),
SYSCALL_SIGN(sys_epoll_pwait),
SYSCALL_SIGN(sys_notimpl), /* 195 */
SYSCALL_SIGN(sys_timerfd_create),
SYSCALL_SIGN(sys_timerfd_settime),
SYSCALL_SIGN(sys_timerfd_gettime),
SYSCALL_SIGN(sys_signalfd),
SYSCALL_SIGN(sys_memfd_create), /* 200 */
SYSCALL_SIGN(sys_ftruncate),
SYSCALL_SIGN(sys_setitimer),
SYSCALL_SIGN(sys_utimensat),
#ifdef RT_USING_POSIX_SOCKET
SYSCALL_SIGN(sys_syslog),
SYSCALL_SIGN(sys_socketpair), /* 205 */
#else
SYSCALL_SIGN(sys_notimpl),
SYSCALL_SIGN(sys_notimpl), /* 205 */
#endif
SYSCALL_SIGN(sys_wait4),
SYSCALL_SIGN(sys_set_robust_list),
SYSCALL_SIGN(sys_get_robust_list),
SYSCALL_SIGN(sys_setpgid),
SYSCALL_SIGN(sys_getpgid), /* 210 */
SYSCALL_SIGN(sys_getsid),
SYSCALL_SIGN(sys_getppid),
SYSCALL_SIGN(sys_fchdir),
SYSCALL_SIGN(sys_chown),
};
const void *lwp_get_sys_api(rt_uint32_t number)
{
const void *func = (const void *)sys_notimpl;
if (number == 0xff)
{
func = (void *)sys_log;
}
else
{
number -= 1;
if (number < sizeof(func_table) / sizeof(func_table[0]))
{
func = func_table[number].func;
}
else
{
if (__sys_log_enable)
{
LOG_I("Unimplement syscall %d", number);
}
}
}
return func;
}
const char *lwp_get_syscall_name(rt_uint32_t number)
{
const char *name = "sys_notimpl";
if (number == 0xff)
{
name = "sys_log";
}
else
{
number -= 1;
if (number < sizeof(func_table) / sizeof(func_table[0]))
{
name = (char*)func_table[number].name;
}
else
{
if (__sys_log_enable)
{
LOG_I("Unimplement syscall %d", number);
}
}
}
// skip sys_
return name;
}
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