/* * 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 */ #define _GNU_SOURCE /* RT-Thread System call */ #include #include #include #include #include #include #define DBG_TAG "SYSCALL" #define DBG_LVL DBG_INFO #include #include "syscall_generic.h" #include #ifdef ARCH_MM_MMU #include #include #endif #include #include #ifdef RT_USING_DFS #include #include #include #include #include /* rename() */ #include #include /* statfs() */ #endif #include "mqueue.h" #ifdef RT_USING_SAL #include #include #include #include #include #endif /* RT_USING_SAL */ #if (defined(RT_USING_SAL) && defined(SAL_USING_POSIX)) #include #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 #include "lwp_ipc_internal.h" #include #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 */ struct musl_sockaddr { uint16_t sa_family; char sa_data[14]; }; 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; /* * 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 */ } /* thread/process */ void sys_exit(int value) { rt_base_t level; rt_thread_t tid, main_thread; struct rt_lwp *lwp; LOG_D("thread/process exit."); tid = rt_thread_self(); lwp = (struct rt_lwp *)tid->lwp; level = rt_hw_interrupt_disable(); #ifdef ARCH_MM_MMU if (tid->clear_child_tid) { int t = 0; int *clear_child_tid = tid->clear_child_tid; tid->clear_child_tid = RT_NULL; lwp_put_to_user(clear_child_tid, &t, sizeof t); sys_futex(clear_child_tid, FUTEX_WAKE, 1, RT_NULL, RT_NULL, 0); } main_thread = rt_list_entry(lwp->t_grp.prev, struct rt_thread, sibling); if (main_thread == tid) { lwp_terminate(lwp); lwp_wait_subthread_exit(); lwp->lwp_ret = value; } #else main_thread = rt_list_entry(lwp->t_grp.prev, struct rt_thread, sibling); if (main_thread == tid) { rt_thread_t sub_thread; rt_list_t *list; lwp_terminate(lwp); /* delete all subthread */ while ((list = tid->sibling.prev) != &lwp->t_grp) { sub_thread = rt_list_entry(list, struct rt_thread, sibling); rt_list_remove(&sub_thread->sibling); rt_thread_delete(sub_thread); } lwp->lwp_ret = value; } #endif /* ARCH_MM_MMU */ rt_thread_delete(tid); rt_schedule(); rt_hw_interrupt_enable(level); return; } /* exit group */ void sys_exit_group(int status) { return; } /* 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) { 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, 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) { return -EINVAL; } 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" */ off_t sys_lseek(int fd, off_t offset, int whence) { off_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; if (!lwp_user_accessable((void *)name, 1)) { return -EFAULT; } len = rt_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 = open(kname, flag, 0); if (ret < 0) { ret = GET_ERRNO(); } kmem_put(kname); return ret; #else if (!lwp_user_accessable((void *)name, 1)) { return -EFAULT; } int ret = open(name, flag, 0); 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 } /* DFS and lwip definitions */ #define IMPL_POLLIN (0x01) #define IMPL_POLLOUT (0x02) #define IMPL_POLLERR (0x04) #define IMPL_POLLHUP (0x08) #define IMPL_POLLNVAL (0x10) /* musl definitions */ #define INTF_POLLIN 0x001 #define INTF_POLLPRI 0x002 #define INTF_POLLOUT 0x004 #define INTF_POLLERR 0x008 #define INTF_POLLHUP 0x010 #define INTF_POLLNVAL 0x020 #define INTF_POLLRDNORM 0x040 #define INTF_POLLRDBAND 0x080 #define INTF_POLLWRNORM 0x100 #define INTF_POLLWRBAND 0x200 #define INTF_POLLMSG 0x400 #define INTF_POLLRDHUP 0x2000 #define INTF_POLLIN_MASK (INTF_POLLIN | INTF_POLLRDNORM | INTF_POLLRDBAND | INTF_POLLPRI) #define INTF_POLLOUT_MASK (INTF_POLLOUT | INTF_POLLWRNORM | INTF_POLLWRBAND) static void musl2dfs_events(short *events) { short origin_e = *events; short result_e = 0; if (origin_e & INTF_POLLIN_MASK) { result_e |= IMPL_POLLIN; } if (origin_e & INTF_POLLOUT_MASK) { result_e |= IMPL_POLLOUT; } if (origin_e & INTF_POLLERR) { result_e |= IMPL_POLLERR; } if (origin_e & INTF_POLLHUP) { result_e |= IMPL_POLLHUP; } if (origin_e & INTF_POLLNVAL) { result_e |= IMPL_POLLNVAL; } *events = result_e; } static void dfs2musl_events(short *events) { short origin_e = *events; short result_e = 0; if (origin_e & IMPL_POLLIN) { result_e |= INTF_POLLIN_MASK; } if (origin_e & IMPL_POLLOUT) { result_e |= INTF_POLLOUT_MASK; } if (origin_e & IMPL_POLLERR) { result_e |= INTF_POLLERR; } if (origin_e & IMPL_POLLHUP) { result_e |= INTF_POLLHUP; } if (origin_e & IMPL_POLLNVAL) { result_e |= INTF_POLLNVAL; } *events = result_e; } sysret_t sys_poll(struct pollfd *fds, nfds_t nfds, int timeout) { int ret = -1; int i = 0; #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); for (i = 0; i < nfds; i++) { musl2dfs_events(&kfds[i].events); } ret = poll(kfds, nfds, timeout); if (ret > 0) { for (i = 0; i < nfds; i++) { dfs2musl_events(&kfds->revents); } lwp_put_to_user(fds, kfds, nfds * sizeof *kfds); } kmem_put(kfds); return ret; #else #ifdef RT_USING_MUSL for (i = 0; i < nfds; i++) { musl2dfs_events(&fds->events); } #endif /* RT_USING_MUSL */ if (!lwp_user_accessable((void *)fds, nfds * sizeof *fds)) { return -EFAULT; } ret = poll(fds, nfds, timeout); #ifdef RT_USING_MUSL if (ret > 0) { for (i = 0; i < nfds; i++) { dfs2musl_events(&fds->revents); } } #endif /* RT_USING_MUSL */ 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; int a_err = 0; lwp_user_strlen(pathname, &a_err); if (a_err) { return -EFAULT; } len = rt_strlen(pathname); if (!len) { return -EINVAL; } kname = (char *)kmem_get(len + 1); if (!kname) { return -ENOMEM; } lwp_get_from_user(kname, (void *)pathname, len + 1); 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) { return lwp_execve(filename, 0, argc, argv, envp); } sysret_t sys_kill(int pid, int sig) { int ret = 0; ret = lwp_kill(pid, sig); return (ret < 0 ? GET_ERRNO() : ret); } sysret_t sys_getpid(void) { return lwp_getpid(); } /* syscall: "getpriority" ret: "int" args: "int" "id_t" */ sysret_t sys_getpriority(int which, id_t who) { if (which == PRIO_PROCESS) { rt_thread_t tid; tid = rt_thread_self(); if (who == (id_t)(rt_size_t)tid || who == 0xff) { return tid->current_priority; } } return 0xff; } /* syscall: "setpriority" ret: "int" args: "int" "id_t" "int" */ sysret_t sys_setpriority(int which, id_t who, int prio) { if (which == PRIO_PROCESS) { rt_thread_t tid; tid = rt_thread_self(); if ((who == (id_t)(rt_size_t)tid || who == 0xff) && (prio >= 0 && prio < RT_THREAD_PRIORITY_MAX)) { rt_thread_control(tid, RT_THREAD_CTRL_CHANGE_PRIORITY, &prio); return 0; } } return -1; } rt_sem_t sys_sem_create(const char *name, rt_uint32_t value, rt_uint8_t flag) { rt_sem_t sem = rt_sem_create(name, value, flag); if (lwp_user_object_add(lwp_self(), (rt_object_t)sem) != 0) { rt_sem_delete(sem); sem = NULL; } return sem; } rt_err_t sys_sem_delete(rt_sem_t sem) { return lwp_user_object_delete(lwp_self(), (rt_object_t)sem); } rt_err_t sys_sem_take(rt_sem_t sem, rt_int32_t time) { return rt_sem_take_interruptible(sem, time); } rt_err_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) { rt_mutex_t mutex = rt_mutex_create(name, flag); if(mutex == NULL) return NULL; if (lwp_user_object_add(lwp_self(), (rt_object_t)mutex) != 0) { rt_mutex_delete(mutex); mutex = NULL; } return mutex; } rt_err_t sys_mutex_delete(rt_mutex_t mutex) { return lwp_user_object_delete(lwp_self(), (rt_object_t)mutex); } rt_err_t sys_mutex_take(rt_mutex_t mutex, rt_int32_t time) { return rt_mutex_take_interruptible(mutex, time); } rt_err_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, off_t pgoffset) { return lwp_mmap2(addr, length, prot, flags, fd, pgoffset); } sysret_t sys_munmap(void *addr, size_t length) { return lwp_munmap(addr); } void *sys_mremap(void *old_address, size_t old_size, size_t new_size, int flags, void *new_address) { return (void *)-1; } 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) { rt_event_t event = rt_event_create(name, flag); if (lwp_user_object_add(lwp_self(), (rt_object_t)event) != 0) { rt_event_delete(event); event = NULL; } return event; } rt_err_t sys_event_delete(rt_event_t event) { return lwp_user_object_delete(lwp_self(), (rt_object_t)event); } rt_err_t sys_event_send(rt_event_t event, rt_uint32_t set) { return rt_event_send(event, set); } rt_err_t sys_event_recv(rt_event_t event, rt_uint32_t set, rt_uint8_t opt, rt_int32_t timeout, rt_uint32_t *recved) { if ((recved != NULL) && !lwp_user_accessable((void *)recved, sizeof(rt_uint32_t *))) { return -EFAULT; } return rt_event_recv(event, set, opt, timeout, recved); } rt_mailbox_t sys_mb_create(const char *name, rt_size_t size, rt_uint8_t flag) { rt_mailbox_t mb = rt_mb_create(name, size, flag); if (lwp_user_object_add(lwp_self(), (rt_object_t)mb) != 0) { rt_mb_delete(mb); mb = NULL; } return mb; } rt_err_t sys_mb_delete(rt_mailbox_t mb) { return lwp_user_object_delete(lwp_self(), (rt_object_t)mb); } rt_err_t sys_mb_send(rt_mailbox_t mb, rt_ubase_t value) { return rt_mb_send(mb, value); } rt_err_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); } rt_err_t sys_mb_recv(rt_mailbox_t mb, rt_ubase_t *value, rt_int32_t timeout) { if (!lwp_user_accessable((void *)value, sizeof(rt_ubase_t *))) { return -EFAULT; } return rt_mb_recv(mb, (rt_ubase_t *)value, timeout); } 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_mq_create(name, msg_size, max_msgs, flag); if (lwp_user_object_add(lwp_self(), (rt_object_t)mq) != 0) { rt_mq_delete(mq); mq = NULL; } return mq; } rt_err_t sys_mq_delete(rt_mq_t mq) { return lwp_user_object_delete(lwp_self(), (rt_object_t)mq); } rt_err_t sys_mq_send(rt_mq_t mq, void *buffer, rt_size_t size) { if (!lwp_user_accessable((void *)buffer, size)) { return -EFAULT; } return rt_mq_send(mq, buffer, size); } rt_err_t sys_mq_urgent(rt_mq_t mq, void *buffer, rt_size_t size) { if (!lwp_user_accessable((void *)buffer, size)) { return -EFAULT; } return rt_mq_urgent(mq, buffer, size); } rt_err_t sys_mq_recv(rt_mq_t mq, void *buffer, rt_size_t size, rt_int32_t timeout) { if (!lwp_user_accessable((void *)buffer, size)) { return -EFAULT; } return rt_mq_recv(mq, buffer, size, timeout); } 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) { rt_timer_t timer = rt_timer_create(name, 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; } return timer; } rt_err_t sys_rt_timer_delete(rt_timer_t timer) { return lwp_user_object_delete(lwp_self(), (rt_object_t)timer); } rt_err_t sys_rt_timer_start(rt_timer_t timer) { return rt_timer_start(timer); } rt_err_t sys_rt_timer_stop(rt_timer_t timer) { return rt_timer_stop(timer); } rt_err_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_CTASSERT(sigevent_compatible, offsetof(struct ksigevent, sigev_tid) == offsetof(struct sigevent, sigev_notify_function)); rt_err_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; } rt_err_t sys_timer_delete(timer_t timerid) { int ret = timer_delete(timerid); return (ret < 0 ? GET_ERRNO() : ret); } rt_err_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); } rt_err_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); } rt_err_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[]) { rt_base_t level = 0; 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 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); } level = rt_hw_interrupt_disable(); rt_list_insert_after(&lwp->t_grp, &thread->sibling); rt_hw_interrupt_enable(level); return thread; fail: lwp_tid_put(tid); if (lwp) { lwp_ref_dec(lwp); } return RT_NULL; } #ifdef ARCH_MM_MMU #define CLONE_VM 0x00000100 #define CLONE_FS 0x00000200 #define CLONE_FILES 0x00000400 #define CLONE_SIGHAND 0x00000800 #define CLONE_PTRACE 0x00002000 #define CLONE_VFORK 0x00004000 #define CLONE_PARENT 0x00008000 #define CLONE_THREAD 0x00010000 #define CLONE_NEWNS 0x00020000 #define CLONE_SYSVSEM 0x00040000 #define CLONE_SETTLS 0x00080000 #define CLONE_PARENT_SETTID 0x00100000 #define CLONE_CHILD_CLEARTID 0x00200000 #define CLONE_DETACHED 0x00400000 #define CLONE_UNTRACED 0x00800000 #define CLONE_CHILD_SETTID 0x01000000 #define CLONE_NEWCGROUP 0x02000000 #define CLONE_NEWUTS 0x04000000 #define CLONE_NEWIPC 0x08000000 #define CLONE_NEWUSER 0x10000000 #define CLONE_NEWPID 0x20000000 #define CLONE_NEWNET 0x40000000 #define CLONE_IO 0x80000000 /* arg[] -> flags * stack * new_tid * tls * set_clear_tid_address * quit_func * start_args * */ #define SYS_CLONE_ARGS_NR 7 long _sys_clone(void *arg[]) { rt_base_t level = 0; struct rt_lwp *lwp = 0; rt_thread_t thread = RT_NULL; rt_thread_t self = RT_NULL; int tid = 0; 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, self->init_priority, self->init_tick); if (!thread) { goto fail; } #ifdef RT_USING_SMP thread->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); } level = rt_hw_interrupt_disable(); rt_list_insert_after(&lwp->t_grp, &thread->sibling); rt_hw_interrupt_enable(level); /* copy origin stack */ rt_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: lwp_tid_put(tid); if (lwp) { lwp_ref_dec(lwp); } return GET_ERRNO(); } rt_weak long sys_clone(void *arg[]) { return _sys_clone(arg); } int lwp_dup_user(rt_varea_t varea, void *arg); static int _copy_process(struct rt_lwp *dest_lwp, struct rt_lwp *src_lwp) { int err; dest_lwp->lwp_obj->source = src_lwp->aspace; err = rt_aspace_traversal(src_lwp->aspace, lwp_dup_user, dest_lwp); dest_lwp->lwp_obj->source = NULL; return err; } 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->leader = 0; dst->session = src->session; dst->tty_old_pgrp = 0; dst->__pgrp = src->__pgrp; dst->tty = src->tty; rt_memcpy(dst->cmd, src->cmd, RT_NAME_MAX); dst->sa_flags = src->sa_flags; dst->signal_mask = src->signal_mask; rt_memcpy(dst->signal_handler, src->signal_handler, sizeof dst->signal_handler); } 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_fd_get(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) { rt_base_t level; int tid = 0; rt_err_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; /* new lwp */ lwp = lwp_new(); 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 process */ if (_copy_process(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, self_thread->init_priority, 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_mask = self_thread->signal_mask; thread->thread_idr = self_thread->thread_idr; thread->lwp = (void *)lwp; thread->tid = tid; level = rt_hw_interrupt_disable(); /* add thread to lwp process */ rt_list_insert_after(&lwp->t_grp, &thread->sibling); /* lwp add to children link */ lwp->sibling = self_lwp->first_child; self_lwp->first_child = lwp; lwp->parent = self_lwp; rt_hw_interrupt_enable(level); /* copy origin stack */ rt_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); level = rt_hw_interrupt_disable(); user_stack = arch_get_user_sp(); rt_hw_interrupt_enable(level); arch_set_thread_context(arch_fork_exit, (void *)((char *)thread->stack_addr + thread->stack_size), user_stack, &thread->sp); /* new thread never reach there */ level = rt_hw_interrupt_disable(); if (lwp->tty != RT_NULL) { int ret; struct rt_lwp *old_lwp; old_lwp = lwp->tty->foreground; rt_mutex_take(&lwp->tty->lock, RT_WAITING_FOREVER); ret = tty_push(&lwp->tty->head, old_lwp); rt_mutex_release(&lwp->tty->lock); if (ret < 0) { LOG_E("malloc fail!\n"); SET_ERRNO(ENOMEM); goto fail; } lwp->tty->foreground = lwp; } rt_hw_interrupt_enable(level); rt_thread_startup(thread); return lwp_to_pid(lwp); fail: falival = GET_ERRNO(); if (tid != 0) { lwp_tid_put(tid); } if (lwp) { lwp_ref_dec(lwp); } return falival; } size_t lwp_user_strlen(const char *s, int *err) { size_t len = 0; while (1) { if (!lwp_user_accessable((void *)(s + len), sizeof(char))) { if (err) { *err = 1; } return 0; } if (s[len] == '\0') { if (err) { *err = 0; } return len; } len++; } } /* 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(); } struct process_aux *lwp_argscopy(struct rt_lwp *lwp, int argc, char **argv, char **envp); int lwp_load(const char *filename, struct rt_lwp *lwp, uint8_t *load_addr, size_t addr_size, struct process_aux *aux); void lwp_user_obj_free(struct rt_lwp *lwp); #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) static char *_insert_args(int new_argc, char *new_argv[], struct lwp_args_info *args) { void *page = NULL; int err = 0; char **nargv; char **nenvp; char *p; int i, len; int nsize; if (new_argc == 0) { goto quit; } page = rt_pages_alloc_ext(0, PAGE_ANY_AVAILABLE); /* 1 page */ if (!page) { goto quit; } nsize = new_argc * sizeof(char *); for (i = 0; i < new_argc; i++) { nsize += rt_strlen(new_argv[i]) + 1; } if (nsize + args->size > ARCH_PAGE_SIZE) { err = 1; goto quit; } nargv = (char **)page; nenvp = nargv + args->argc + new_argc + 1; p = (char *)(nenvp + args->envc + 1); /* insert argv */ for (i = 0; i < new_argc; i++) { nargv[i] = p; len = rt_strlen(new_argv[i]) + 1; rt_memcpy(p, new_argv[i], len); p += len; } /* copy argv */ nargv += new_argc; for (i = 0; i < args->argc; i++) { nargv[i] = p; len = rt_strlen(args->argv[i]) + 1; rt_memcpy(p, args->argv[i], len); p += len; } nargv[i] = NULL; /* copy envp */ for (i = 0; i < args->envc; i++) { nenvp[i] = p; len = rt_strlen(args->envp[i]) + 1; rt_memcpy(p, args->envp[i], len); p += len; } nenvp[i] = NULL; /* update args */ args->argv = (char **)page; args->argc = args->argc + new_argc; args->envp = args->argv + args->argc + 1; /* args->envc no change */ args->size = args->size + nsize; quit: if (err && page) { rt_pages_free(page, 0); page = NULL; } return page; } #define INTERP_BUF_SIZE 128 static char *_load_script(const char *filename, struct lwp_args_info *args) { void *page = NULL; char *new_page; int fd = -RT_ERROR; int len; char interp[INTERP_BUF_SIZE]; char *cp; char *i_name; char *i_arg; fd = open(filename, O_BINARY | O_RDONLY, 0); if (fd < 0) { goto quit; } len = read(fd, interp, INTERP_BUF_SIZE); if (len < 2) { goto quit; } if ((interp[0] != '#') || (interp[1] != '!')) { goto quit; } if (len == INTERP_BUF_SIZE) { len--; } interp[len] = '\0'; if ((cp = strchr(interp, '\n')) == NULL) { cp = interp + INTERP_BUF_SIZE - 1; } *cp = '\0'; while (cp > interp) { cp--; if ((*cp == ' ') || (*cp == '\t')) { *cp = '\0'; } else { break; } } for (cp = interp + 2; (*cp == ' ') || (*cp == '\t'); cp++) { /* nothing */ } if (*cp == '\0') { goto quit; /* No interpreter name found */ } i_name = cp; i_arg = NULL; for (; *cp && (*cp != ' ') && (*cp != '\t'); cp++) { /* nothing */ } while ((*cp == ' ') || (*cp == '\t')) { *cp++ = '\0'; } if (*cp) { i_arg = cp; } if (i_arg) { new_page = _insert_args(1, &i_arg, args); rt_pages_free(page, 0); page = new_page; if (!page) { goto quit; } } new_page = _insert_args(1, &i_name, args); rt_pages_free(page, 0); page = new_page; quit: if (fd >= 0) { close(fd); } return page; } int load_ldso(struct rt_lwp *lwp, char *exec_name, char *const argv[], char *const envp[]) { int ret = -1; int i; void *page; void *new_page; int argc = 0; int envc = 0; int size; char **kargv; char **kenvp; size_t len; char *p; char *i_arg; struct lwp_args_info args_info; struct process_aux *aux; size = sizeof(char *); if (argv) { while (1) { if (!argv[argc]) { break; } len = rt_strlen((const char *)argv[argc]); size += sizeof(char *) + len + 1; argc++; } } if (envp) { while (1) { if (!envp[envc]) { break; } len = rt_strlen((const char *)envp[envc]); size += sizeof(char *) + len + 1; envc++; } } page = rt_pages_alloc_ext(0, PAGE_ANY_AVAILABLE); /* 1 page */ if (!page) { SET_ERRNO(ENOMEM); goto quit; } kargv = (char **)page; kenvp = kargv + argc + 1; p = (char *)(kenvp + envc + 1); /* copy argv */ if (argv) { for (i = 0; i < argc; i++) { kargv[i] = p; len = rt_strlen(argv[i]) + 1; rt_memcpy(p, argv[i], len); p += len; } kargv[i] = NULL; } /* copy envp */ if (envp) { for (i = 0; i < envc; i++) { kenvp[i] = p; len = rt_strlen(envp[i]) + 1; rt_memcpy(p, envp[i], len); p += len; } kenvp[i] = NULL; } args_info.argc = argc; args_info.argv = kargv; args_info.envc = envc; args_info.envp = kenvp; args_info.size = size; new_page = _insert_args(1, &exec_name, &args_info); rt_pages_free(page, 0); page = new_page; if (!page) { SET_ERRNO(ENOMEM); goto quit; } i_arg = "-e"; new_page = _insert_args(1, &i_arg, &args_info); rt_pages_free(page, 0); page = new_page; if (!page) { SET_ERRNO(ENOMEM); goto quit; } i_arg = "ld.so"; new_page = _insert_args(1, &i_arg, &args_info); rt_pages_free(page, 0); page = new_page; if (!page) { SET_ERRNO(ENOMEM); goto quit; } if ((aux = lwp_argscopy(lwp, args_info.argc, args_info.argv, args_info.envp)) == NULL) { SET_ERRNO(ENOMEM); goto quit; } ret = lwp_load("/lib/ld.so", lwp, RT_NULL, 0, aux); rt_strncpy(lwp->cmd, exec_name, RT_NAME_MAX); quit: if (page) { rt_pages_free(page, 0); } return (ret < 0 ? GET_ERRNO() : ret); } sysret_t sys_execve(const char *path, char *const argv[], char *const envp[]) { int ret = -1; int argc = 0; int envc = 0; void *page = NULL; void *new_page; int size = 0; size_t len; int access_err; char **kargv; char **kenvp; char *p; struct rt_lwp *new_lwp = NULL; struct rt_lwp *lwp; rt_base_t level; int uni_thread; rt_thread_t thread; struct process_aux *aux; int i; struct lwp_args_info args_info; lwp = lwp_self(); thread = rt_thread_self(); uni_thread = 1; level = rt_hw_interrupt_disable(); if (lwp->t_grp.prev != &thread->sibling) { uni_thread = 0; } if (lwp->t_grp.next != &thread->sibling) { uni_thread = 0; } rt_hw_interrupt_enable(level); if (!uni_thread) { SET_ERRNO(EINVAL); goto quit; } len = lwp_user_strlen(path, &access_err); if (access_err) { SET_ERRNO(EFAULT); goto quit; } size += sizeof(char *); if (argv) { while (1) { if (!lwp_user_accessable((void *)(argv + argc), sizeof(char *))) { SET_ERRNO(EFAULT); goto quit; } if (!argv[argc]) { break; } len = lwp_user_strlen((const char *)argv[argc], &access_err); if (access_err) { SET_ERRNO(EFAULT); goto quit; } size += sizeof(char *) + len + 1; argc++; } } size += sizeof(char *); if (envp) { while (1) { if (!lwp_user_accessable((void *)(envp + envc), sizeof(char *))) { SET_ERRNO(EFAULT); goto quit; } if (!envp[envc]) { break; } len = lwp_user_strlen((const char *)envp[envc], &access_err); if (access_err) { SET_ERRNO(EFAULT); goto quit; } size += sizeof(char *) + len + 1; envc++; } } if (size > ARCH_PAGE_SIZE) { SET_ERRNO(EINVAL); goto quit; } page = rt_pages_alloc_ext(0, PAGE_ANY_AVAILABLE); /* 1 page */ if (!page) { SET_ERRNO(ENOMEM); goto quit; } kargv = (char **)page; kenvp = kargv + argc + 1; p = (char *)(kenvp + envc + 1); /* copy argv */ if (argv) { for (i = 0; i < argc; i++) { kargv[i] = p; len = rt_strlen(argv[i]) + 1; rt_memcpy(p, argv[i], len); p += len; } kargv[i] = NULL; } /* copy envp */ if (envp) { for (i = 0; i < envc; i++) { kenvp[i] = p; len = rt_strlen(envp[i]) + 1; rt_memcpy(p, envp[i], len); p += len; } kenvp[i] = NULL; } /* alloc new lwp to operation */ new_lwp = (struct rt_lwp *)rt_malloc(sizeof(struct rt_lwp)); if (!new_lwp) { SET_ERRNO(ENOMEM); goto quit; } rt_memset(new_lwp, 0, sizeof(struct rt_lwp)); new_lwp->ref = 1; lwp_user_object_lock_init(new_lwp); ret = lwp_user_space_init(new_lwp, 0); if (ret != 0) { SET_ERRNO(ENOMEM); goto quit; } /* file is a script ? */ args_info.argc = argc; args_info.argv = kargv; args_info.envc = envc; args_info.envp = kenvp; args_info.size = size; while (1) { new_page = _load_script(path, &args_info); if (!new_page) { break; } rt_pages_free(page, 0); page = new_page; path = args_info.argv[0]; } /* now load elf */ if ((aux = lwp_argscopy(new_lwp, args_info.argc, args_info.argv, args_info.envp)) == NULL) { SET_ERRNO(ENOMEM); goto quit; } ret = lwp_load(path, new_lwp, RT_NULL, 0, aux); if (ret == 1) { /* dynamic */ lwp_unmap_user(new_lwp, (void *)(USER_VADDR_TOP - ARCH_PAGE_SIZE)); ret = load_ldso(new_lwp, (char *)path, args_info.argv, args_info.envp); } if (ret == RT_EOK) { int off = 0; int last_backslash = 0; char *run_name = args_info.argv[0]; /* clear all user objects */ lwp_user_object_clear(lwp); /* find last \ or / */ while (1) { char c = run_name[off++]; if (c == '\0') { break; } if (c == '\\' || c == '/') { last_backslash = off; } } /* load ok, now set thread name and swap the data of lwp and new_lwp */ level = rt_hw_interrupt_disable(); rt_strncpy(thread->parent.name, run_name + last_backslash, RT_NAME_MAX); rt_pages_free(page, 0); #ifdef ARCH_MM_MMU _swap_lwp_data(lwp, new_lwp, struct rt_aspace *, aspace); _swap_lwp_data(lwp, new_lwp, struct rt_lwp_objs *, lwp_obj); _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); rt_memset(&thread->signal_mask, 0, sizeof(thread->signal_mask)); rt_memset(&thread->signal_mask_bak, 0, sizeof(thread->signal_mask_bak)); lwp->sa_flags = 0; rt_memset(&lwp->signal_mask, 0, sizeof(lwp->signal_mask)); rt_memset(&lwp->signal_mask_bak, 0, sizeof(lwp->signal_mask_bak)); rt_memset(lwp->signal_handler, 0, sizeof(lwp->signal_handler)); /* to do: clsoe files with flag CLOEXEC */ lwp_aspace_switch(thread); rt_hw_interrupt_enable(level); 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 */ } return -EINVAL; quit: if (page) { rt_pages_free(page, 0); } if (new_lwp) { lwp_ref_dec(new_lwp); } return (ret < 0 ? GET_ERRNO() : ret); } #endif /* ARCH_MM_MMU */ rt_err_t sys_thread_delete(rt_thread_t thread) { #ifdef ARCH_MM_MMU return rt_thread_delete(thread); #else rt_err_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 } rt_err_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) { return lwp_channel_open(FDT_TYPE_LWP, name, flags); } rt_err_t sys_channel_close(int fd) { return lwp_channel_close(FDT_TYPE_LWP, fd); } rt_err_t sys_channel_send(int fd, rt_channel_msg_t data) { return lwp_channel_send(FDT_TYPE_LWP, fd, data); } rt_err_t sys_channel_send_recv_timeout(int fd, rt_channel_msg_t data, rt_channel_msg_t data_ret, rt_int32_t time) { return lwp_channel_send_recv_timeout(FDT_TYPE_LWP, fd, data, data_ret, time); } rt_err_t sys_channel_reply(int fd, rt_channel_msg_t data) { return lwp_channel_reply(FDT_TYPE_LWP, fd, data); } rt_err_t sys_channel_recv_timeout(int fd, rt_channel_msg_t data, rt_int32_t time) { return lwp_channel_recv_timeout(FDT_TYPE_LWP, fd, data, time); } 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) { rt_device_t console = rt_console_get_device(); if (console && __sys_log_enable) { rt_device_write(console, -1, log, size); } return 0; } sysret_t sys_stat(const char *file, struct stat *buf) { int ret = 0; int err; 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, &err); if (err) { 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_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 */ rt_err_t sys_device_init(rt_device_t dev) { return rt_device_init(dev); } rt_err_t sys_device_register(rt_device_t dev, const char *name, rt_uint16_t flags) { return rt_device_register(dev, name, flags); } rt_err_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); } rt_err_t sys_device_open(rt_device_t dev, rt_uint16_t oflag) { return rt_device_open(dev, oflag); } rt_err_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) { struct sockaddr sa; struct musl_sockaddr kname; if (!lwp_user_accessable((void *)name, namelen)) { return -EFAULT; } #ifdef SAL_USING_AF_UNIX if (name->sa_family == AF_UNIX) { namelen = sizeof(struct sockaddr); } #endif /* SAL_USING_AF_UNIX */ lwp_get_from_user(&kname, (void *)name, namelen); sockaddr_tolwip(&kname, &sa); return bind(socket, &sa, namelen); } 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; convert_sockopt(&level, &optname); ret = getsockopt(socket, level, optname, optval, optlen); return (ret < 0 ? GET_ERRNO() : ret); } sysret_t sys_setsockopt(int socket, int level, int optname, const void *optval, socklen_t optlen) { int ret; convert_sockopt(&level, &optname); ret = setsockopt(socket, level, optname, optval, optlen); return (ret < 0 ? GET_ERRNO() : ret); } sysret_t sys_connect(int socket, const struct musl_sockaddr *name, socklen_t namelen) { int ret; struct sockaddr sa; struct musl_sockaddr kname; if (!lwp_user_accessable((void *)name, namelen)) { return -EFAULT; } #ifdef SAL_USING_AF_UNIX if (name->sa_family == AF_UNIX) { namelen = sizeof(struct sockaddr); } #endif /* SAL_USING_AF_UNIX */ lwp_get_from_user(&kname, (void *)name, namelen); sockaddr_tolwip(&kname, &sa); ret = connect(socket, &sa, namelen); return (ret < 0 ? GET_ERRNO() : 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; } return flgs; } 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; flgs = netflags_muslc_2_lwip(flags); ret = recvfrom(socket, mem, len, flgs, NULL, NULL); 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 ret; int flgs = 0; flgs = netflags_muslc_2_lwip(flags); ret = sendto(socket, dataptr, size, flgs, NULL, 0); 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_closesocket(int socket) { return closesocket(socket); } #endif rt_thread_t sys_thread_find(char *name) { return rt_thread_find(name); } rt_tick_t sys_tick_get(void) { return rt_tick_get(); } rt_err_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 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; memcpy(&kact.sa_mask, &act->mask, sigsetsize); kact.sa_restorer = act->restorer; pkact = &kact; } ret = lwp_sigaction(sig, pkact, pkoact, sigsetsize); #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); } 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_sigprocmask(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_tkill(int tid, int sig) { #ifdef ARCH_MM_MMU rt_base_t level; rt_thread_t thread; int ret; level = rt_hw_interrupt_disable(); thread = lwp_tid_get_thread(tid); ret = lwp_thread_kill(thread, sig); rt_hw_interrupt_enable(level); 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_sigprocmask(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 = waitpid(pid, status, options); } #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 err; #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 lwp_user_strlen(nodename, &err); if (err) { SET_ERRNO(EFAULT); goto exit; } #endif k_nodename = rt_strdup(nodename); if (!k_nodename) { SET_ERRNO(ENOMEM); goto exit; } } if (servname) { #ifdef ARCH_MM_MMU lwp_user_strlen(servname, &err); if (err) { SET_ERRNO(EFAULT); goto exit; } #endif k_servname = rt_strdup(servname); if (!k_servname) { SET_ERRNO(ENOMEM); goto exit; } } 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(); } if (k_nodename) { rt_free(k_nodename); } if (k_servname) { rt_free(k_servname); } 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; struct hostent *sal_result = NULL; char *sal_buf = NULL; char *k_name = NULL; int a_err = 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; } lwp_user_strlen(name, &a_err); if (a_err) { *err = EFAULT; SET_ERRNO(EFAULT); goto __exit; } #endif *result = ret; sal_buf = (char *)malloc(HOSTENT_BUFSZ); if (sal_buf == NULL) { SET_ERRNO(ENOMEM); goto __exit; } k_name = rt_strdup(name); if (k_name == 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; /* 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 += rt_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; rt_memcpy(ptr, sal_he.h_addr_list[index], sal_he.h_length); ptr += sal_he.h_length; index++; } ret->h_addr_list[index] = NULL; } ret_val = 0; __exit: if (ret_val < 0) { ret_val = GET_ERRNO(); } /* release buffer */ if (sal_buf) { free(sal_buf); } if (k_name) { free(k_name); } return ret_val; } #endif char *sys_getcwd(char *buf, size_t size) { if (!lwp_user_accessable((void *)buf, size)) { return RT_NULL; } getcwd(buf, size); return (char *)strlen(buf); } sysret_t sys_chdir(const char *path) { #ifdef ARCH_MM_MMU int err = 0; lwp_user_strlen(path, &err); if (err) { return -EFAULT; } err = chdir(path); return (err < 0 ? GET_ERRNO() : err); #else int ret = chdir(path); return (ret < 0 ? GET_ERRNO() : ret); #endif } sysret_t sys_mkdir(const char *path, mode_t mode) { #ifdef ARCH_MM_MMU int err = 0; lwp_user_strlen(path, &err); if (err) { return -EFAULT; } err = mkdir(path, mode); return (err < 0 ? GET_ERRNO() : err); #else int ret = mkdir(path, mode); return (ret < 0 ? GET_ERRNO() : ret); #endif } sysret_t sys_rmdir(const char *path) { #ifdef ARCH_MM_MMU int err = 0; lwp_user_strlen(path, &err); if (err) { return -EFAULT; } err = unlink(path); return (err < 0 ? GET_ERRNO() : err); #else int ret = unlink(path); return (ret < 0 ? GET_ERRNO() : ret); #endif } #ifdef RT_USING_MUSL typedef uint64_t ino_t; #endif struct libc_dirent { ino_t d_ino; off_t d_off; unsigned short d_reclen; unsigned char d_type; char d_name[256]; }; 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; } rt_err_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 *kname = RT_NULL; int a_err = 0; lwp_user_strlen(filename, &a_err); if (a_err) { return -EFAULT; } len = rt_strlen(filename); if (!len) { return -EINVAL; } kname = (char *)kmem_get(len + 1); if (!kname) { return -ENOMEM; } lwp_get_from_user(kname, (void *)filename, len + 1); ret = access(kname, mode); if (ret < 0) { ret = GET_ERRNO(); } kmem_put(kname); return ret; #else ret = access(filename, mode); return (ret < 0 ? GET_ERRNO() : ret); #endif } sysret_t sys_pipe(int fd[2]) { int ret; if (!lwp_user_accessable((void *)fd, sizeof(int[2]))) { return -EFAULT; } ret = pipe(fd); return (ret < 0 ? GET_ERRNO() : ret); } 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; lwp_user_strlen(oldpath, &err); if (err) { return -EFAULT; } lwp_user_strlen(newpath, &err); if (err) { 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; if (!lwp_user_accessable((void *)rlim, sizeof(unsigned long [2]))) { return -EFAULT; } switch (resource) { case RLIMIT_NOFILE: { struct dfs_fdtable *fdt = dfs_fdtable_get(); dfs_file_lock(); rlim[0] = fdt->maxfd; dfs_file_unlock(); rlim[1] = DFS_FD_MAX; ret = 0; } break; default: return -EINVAL; break; } return (ret < 0 ? GET_ERRNO() : ret); } sysret_t sys_setrlimit(unsigned int resource, struct rlimit *rlim) { return -ENOSYS; } sysret_t sys_setsid(void) { int ret = 0; ret = setsid(); return (ret < 0 ? GET_ERRNO() : ret); } 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; } ssize_t sys_readlink(char* path, char *buf, size_t bufsz) { size_t len, copy_len; int err, rtn; int fd = -1; struct dfs_file *d; char *copy_path; len = lwp_user_strlen(path, &err); if (err) { 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'; /* musl __procfdname */ err = sscanf(copy_path, "/proc/self/fd/%d", &fd); if (err != 1) { rtn = 0; if (access(copy_path, 0)) { rtn = -ENOENT; LOG_E("readlink: path not is /proc/self/fd/* and path not exits, call by musl __procfdname()?"); } else { rtn = lwp_put_to_user(buf, copy_path, copy_len); } rt_free(copy_path); return rtn; } else { rt_free(copy_path); } d = fd_get(fd); if (!d) { return -EBADF; } if (!d->vnode) { return -EBADF; } copy_len = strlen(d->vnode->fullpath); if (copy_len > bufsz) { copy_len = bufsz; } bufsz = lwp_put_to_user(buf, d->vnode->fullpath, copy_len); return bufsz; } sysret_t sys_setaffinity(pid_t pid, size_t size, void *set) { if (!lwp_user_accessable(set, sizeof(cpu_set_t))) { return -EFAULT; } for (int i = 0;i < size * 8; i++) { if (CPU_ISSET(i, (cpu_set_t *)set)) { return lwp_setaffinity(pid, i); } } return -1; } sysret_t sys_sched_setparam(pid_t pid, void *param) { struct sched_param *sched_param = (struct sched_param *)param; struct rt_lwp *lwp = NULL; rt_thread_t main_thread; int ret = -1; if (!lwp_user_accessable(param, sizeof(struct sched_param))) { return -EFAULT; } if (pid > 0) { lwp = lwp_from_pid(pid); } else if (pid == 0) { lwp = lwp_self(); } if (lwp) { main_thread = rt_list_entry(lwp->t_grp.prev, struct rt_thread, sibling); return rt_thread_control(main_thread, RT_THREAD_CTRL_CHANGE_PRIORITY, (void *)&sched_param->sched_priority); } return ret; } sysret_t sys_sched_getparam(pid_t pid, void *param) { struct sched_param *sched_param = (struct sched_param *)param; struct rt_lwp *lwp = NULL; rt_thread_t main_thread; int ret = -1; if (!lwp_user_accessable(param, sizeof(struct sched_param))) { return -EFAULT; } if (pid > 0) { lwp = lwp_from_pid(pid); } else if (pid == 0) { lwp = lwp_self(); } if (lwp) { main_thread = rt_list_entry(lwp->t_grp.prev, struct rt_thread, sibling); sched_param->sched_priority = main_thread->current_priority; ret = 0; } 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) { struct sched_param *sched_param = (struct sched_param *)param; rt_thread_t thread = lwp_tid_get_thread(tid); if (!lwp_user_accessable(param, sizeof(struct sched_param))) { return -EFAULT; } return rt_thread_control(thread, RT_THREAD_CTRL_CHANGE_PRIORITY, (void *)&sched_param->sched_priority); return 0; } sysret_t sys_sched_getscheduler(int tid, int *policy, void *param) { struct sched_param *sched_param = (struct sched_param *)param; rt_thread_t thread = lwp_tid_get_thread(tid); if (!lwp_user_accessable(sched_param, sizeof(struct sched_param))) { return -EFAULT; } sched_param->sched_priority = thread->current_priority; *policy = 0; return 0; } 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; rt_err_t ret = 0; #ifdef ARCH_MM_MMU char *kname = RT_NULL; int a_err = 0; rt_size_t len = 0; struct mq_attr attr_k; lwp_user_strlen(name, &a_err); if (a_err) return (mqd_t)-EFAULT; len = rt_strlen(name); if (!len) return (mqd_t)-EINVAL; kname = (char *)kmem_get(len + 1); if (!kname) return (mqd_t)-ENOMEM; lwp_get_from_user(&attr_k, (void *)attr, sizeof(struct mq_attr)); lwp_get_from_user(kname, (void *)name, len + 1); mqdes = mq_open(kname, flags, mode, &attr_k); if (mqdes == RT_NULL) { 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 == RT_NULL) 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; int a_err = 0; rt_size_t len = 0; lwp_user_strlen(name, &a_err); if (a_err) return -EFAULT; len = rt_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; int a_err = 0; struct timespec at_k; lwp_user_strlen(msg, &a_err); if (a_err) return -EFAULT; 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; int a_err = 0; struct timespec at_k; lwp_user_strlen(msg, &a_err); if (a_err) return -EFAULT; kmsg = (char *restrict)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_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 (((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; int err; 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, &err); if (err) { 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; int err; 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, &err); if (err) { 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; } 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_SIGN(sys_notimpl), //network, SYSCALL_SIGN(sys_notimpl), //network, 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_USPACE(SYSCALL_SIGN(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), // 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_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_stat), //TODO should be replaced by sys_lstat if symbolic link are implemented SYSCALL_SIGN(sys_uname), /* 170 */ SYSCALL_SIGN(sys_statfs), SYSCALL_SIGN(sys_statfs64), SYSCALL_SIGN(sys_fstatfs), SYSCALL_SIGN(sys_fstatfs64), }; 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; } } 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; } } // skip sys_ return name; }