| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "nacl_io/kernel_intercept.h" |
| |
| #include <errno.h> |
| #include <string.h> |
| |
| #include "nacl_io/kernel_proxy.h" |
| #include "nacl_io/kernel_wrap.h" |
| #include "nacl_io/osmman.h" |
| #include "nacl_io/ossocket.h" |
| #include "nacl_io/pepper_interface.h" |
| #include "nacl_io/pepper_interface.h" |
| #include "nacl_io/real_pepper_interface.h" |
| |
| using namespace nacl_io; |
| |
| #define ON_NOSYS_RETURN(x) \ |
| if (!ki_is_initialized()) { \ |
| errno = ENOSYS; \ |
| return x; \ |
| } |
| |
| static KernelProxy* s_kp; |
| static bool s_kp_owned; |
| |
| void ki_init(void* kp) { |
| ki_init_ppapi(kp, 0, NULL); |
| } |
| |
| void ki_init_ppapi(void* kp, |
| PP_Instance instance, |
| PPB_GetInterface get_browser_interface) { |
| kernel_wrap_init(); |
| |
| if (kp == NULL) { |
| s_kp = new KernelProxy(); |
| s_kp_owned = true; |
| } else { |
| s_kp = static_cast<KernelProxy*>(kp); |
| s_kp_owned = false; |
| } |
| |
| PepperInterface* ppapi = NULL; |
| if (instance && get_browser_interface) |
| ppapi = new RealPepperInterface(instance, get_browser_interface); |
| |
| s_kp->Init(ppapi); |
| } |
| |
| int ki_register_mount_type(const char* mount_type, |
| struct fuse_operations* fuse_ops) { |
| return s_kp->RegisterMountType(mount_type, fuse_ops); |
| } |
| |
| int ki_unregister_mount_type(const char* mount_type) { |
| return s_kp->UnregisterMountType(mount_type); |
| } |
| |
| int ki_is_initialized() { |
| return s_kp != NULL; |
| } |
| |
| void ki_uninit() { |
| kernel_wrap_uninit(); |
| if (s_kp_owned) |
| delete s_kp; |
| s_kp = NULL; |
| } |
| |
| int ki_chdir(const char* path) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->chdir(path); |
| } |
| |
| char* ki_getcwd(char* buf, size_t size) { |
| // gtest uses getcwd in a static initializer. If we haven't initialized the |
| // kernel-intercept yet, just return ".". |
| if (!ki_is_initialized()) { |
| if (size < 2) { |
| errno = ERANGE; |
| return NULL; |
| } |
| buf[0] = '.'; |
| buf[1] = 0; |
| return buf; |
| } |
| return s_kp->getcwd(buf, size); |
| } |
| |
| char* ki_getwd(char* buf) { |
| ON_NOSYS_RETURN(NULL); |
| return s_kp->getwd(buf); |
| } |
| |
| int ki_dup(int oldfd) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->dup(oldfd); |
| } |
| |
| int ki_dup2(int oldfd, int newfd) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->dup2(oldfd, newfd); |
| } |
| |
| int ki_chmod(const char *path, mode_t mode) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->chmod(path, mode); |
| } |
| |
| int ki_fchdir(int fd) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->fchdir(fd); |
| } |
| |
| int ki_fchmod(int fd, mode_t mode) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->fchmod(fd, mode); |
| } |
| |
| int ki_stat(const char *path, struct stat *buf) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->stat(path, buf); |
| } |
| |
| int ki_mkdir(const char *path, mode_t mode) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->mkdir(path, mode); |
| } |
| |
| int ki_rmdir(const char *path) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->rmdir(path); |
| } |
| |
| int ki_mount(const char *source, const char *target, const char *filesystemtype, |
| unsigned long mountflags, const void *data) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->mount(source, target, filesystemtype, mountflags, data); |
| } |
| |
| int ki_umount(const char *path) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->umount(path); |
| } |
| |
| int ki_open(const char *path, int oflag) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->open(path, oflag); |
| } |
| |
| int ki_pipe(int pipefds[2]) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->pipe(pipefds); |
| } |
| |
| ssize_t ki_read(int fd, void *buf, size_t nbyte) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->read(fd, buf, nbyte); |
| } |
| |
| ssize_t ki_write(int fd, const void *buf, size_t nbyte) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->write(fd, buf, nbyte); |
| } |
| |
| int ki_fstat(int fd, struct stat *buf){ |
| ON_NOSYS_RETURN(-1); |
| return s_kp->fstat(fd, buf); |
| } |
| |
| int ki_getdents(int fd, void *buf, unsigned int count) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->getdents(fd, buf, count); |
| } |
| |
| int ki_ftruncate(int fd, off_t length) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->ftruncate(fd, length); |
| } |
| |
| int ki_fsync(int fd) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->fsync(fd); |
| } |
| |
| int ki_fdatasync(int fd) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->fdatasync(fd); |
| } |
| |
| int ki_isatty(int fd) { |
| ON_NOSYS_RETURN(0); |
| return s_kp->isatty(fd); |
| } |
| |
| int ki_close(int fd) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->close(fd); |
| } |
| |
| off_t ki_lseek(int fd, off_t offset, int whence) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->lseek(fd, offset, whence); |
| } |
| |
| int ki_remove(const char* path) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->remove(path); |
| } |
| |
| int ki_unlink(const char* path) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->unlink(path); |
| } |
| |
| int ki_truncate(const char* path, off_t length) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->truncate(path, length); |
| } |
| |
| int ki_lstat(const char* path, struct stat* buf) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->lstat(path, buf); |
| } |
| |
| int ki_link(const char* oldpath, const char* newpath) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->link(oldpath, newpath); |
| } |
| |
| int ki_rename(const char* path, const char* newpath) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->rename(path, newpath); |
| } |
| |
| int ki_symlink(const char* oldpath, const char* newpath) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->symlink(oldpath, newpath); |
| } |
| |
| int ki_access(const char* path, int amode) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->access(path, amode); |
| } |
| |
| int ki_readlink(const char *path, char *buf, size_t count) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->readlink(path, buf, count); |
| } |
| |
| int ki_utimes(const char *path, const struct timeval times[2]) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->utimes(path, times); |
| } |
| |
| void* ki_mmap(void* addr, size_t length, int prot, int flags, int fd, |
| off_t offset) { |
| ON_NOSYS_RETURN(MAP_FAILED); |
| return s_kp->mmap(addr, length, prot, flags, fd, offset); |
| } |
| |
| int ki_munmap(void* addr, size_t length) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->munmap(addr, length); |
| } |
| |
| int ki_open_resource(const char* file) { |
| ON_NOSYS_RETURN(-1); return s_kp->open_resource(file); |
| } |
| |
| int ki_fcntl(int d, int request, va_list args) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->fcntl(d, request, args); |
| } |
| |
| int ki_ioctl(int d, int request, va_list args) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->ioctl(d, request, args); |
| } |
| |
| int ki_chown(const char* path, uid_t owner, gid_t group) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->chown(path, owner, group); |
| } |
| |
| int ki_fchown(int fd, uid_t owner, gid_t group) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->fchown(fd, owner, group); |
| } |
| |
| int ki_lchown(const char* path, uid_t owner, gid_t group) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->lchown(path, owner, group); |
| } |
| |
| int ki_utime(const char* filename, const struct utimbuf* times) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->utime(filename, times); |
| } |
| |
| int ki_poll(struct pollfd *fds, nfds_t nfds, int timeout) { |
| return s_kp->poll(fds, nfds, timeout); |
| } |
| |
| int ki_select(int nfds, fd_set* readfds, fd_set* writefds, |
| fd_set* exceptfds, struct timeval* timeout) { |
| return s_kp->select(nfds, readfds, writefds, exceptfds, timeout); |
| } |
| |
| int ki_tcflush(int fd, int queue_selector) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->tcflush(fd, queue_selector); |
| } |
| |
| int ki_tcgetattr(int fd, struct termios* termios_p) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->tcgetattr(fd, termios_p); |
| } |
| |
| int ki_tcsetattr(int fd, int optional_actions, |
| const struct termios *termios_p) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->tcsetattr(fd, optional_actions, termios_p); |
| } |
| |
| int ki_kill(pid_t pid, int sig) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->kill(pid, sig); |
| } |
| |
| int ki_killpg(pid_t pid, int sig) { |
| errno = ENOSYS; |
| return -1; |
| } |
| |
| int ki_sigaction(int signum, const struct sigaction* action, |
| struct sigaction* oaction) { |
| ON_NOSYS_RETURN(-1); |
| return s_kp->sigaction(signum, action, oaction); |
| } |
| |
| int ki_sigpause(int sigmask) { |
| errno = ENOSYS; |
| return -1; |
| } |
| |
| int ki_sigpending(sigset_t* set) { |
| errno = ENOSYS; |
| return -1; |
| } |
| |
| int ki_sigsuspend(const sigset_t* set) { |
| errno = ENOSYS; |
| return -1; |
| } |
| |
| sighandler_t ki_signal(int signum, sighandler_t handler) { |
| return ki_sigset(signum, handler); |
| } |
| |
| sighandler_t ki_sigset(int signum, sighandler_t handler) { |
| ON_NOSYS_RETURN(SIG_ERR); |
| // Implement sigset(2) in terms of sigaction(2). |
| struct sigaction action; |
| struct sigaction oaction; |
| memset(&action, 0, sizeof(action)); |
| memset(&oaction, 0, sizeof(oaction)); |
| action.sa_handler = handler; |
| int rtn = s_kp->sigaction(signum, &action, &oaction); |
| if (rtn) |
| return SIG_ERR; |
| return oaction.sa_handler; |
| } |
| |
| #ifdef PROVIDES_SOCKET_API |
| // Socket Functions |
| int ki_accept(int fd, struct sockaddr* addr, socklen_t* len) { |
| return s_kp->accept(fd, addr, len); |
| } |
| |
| int ki_bind(int fd, const struct sockaddr* addr, socklen_t len) { |
| return s_kp->bind(fd, addr, len); |
| } |
| |
| int ki_connect(int fd, const struct sockaddr* addr, socklen_t len) { |
| return s_kp->connect(fd, addr, len); |
| } |
| |
| struct hostent* ki_gethostbyname(const char* name) { |
| return s_kp->gethostbyname(name); |
| } |
| |
| int ki_getpeername(int fd, struct sockaddr* addr, socklen_t* len) { |
| return s_kp->getpeername(fd, addr, len); |
| } |
| |
| int ki_getsockname(int fd, struct sockaddr* addr, socklen_t* len) { |
| return s_kp->getsockname(fd, addr, len); |
| } |
| |
| int ki_getsockopt(int fd, int lvl, int optname, void* optval, socklen_t* len) { |
| return s_kp->getsockopt(fd, lvl, optname, optval, len); |
| } |
| |
| int ki_listen(int fd, int backlog) { |
| return s_kp->listen(fd, backlog); |
| } |
| |
| ssize_t ki_recv(int fd, void* buf, size_t len, int flags) { |
| return s_kp->recv(fd, buf, len, flags); |
| } |
| |
| ssize_t ki_recvfrom(int fd, void* buf, size_t len, int flags, |
| struct sockaddr* addr, socklen_t* addrlen) { |
| return s_kp->recvfrom(fd, buf, len, flags, addr, addrlen); |
| } |
| |
| ssize_t ki_recvmsg(int fd, struct msghdr* msg, int flags) { |
| return s_kp->recvmsg(fd, msg, flags); |
| } |
| |
| ssize_t ki_send(int fd, const void* buf, size_t len, int flags) { |
| return s_kp->send(fd, buf, len, flags); |
| } |
| |
| ssize_t ki_sendto(int fd, const void* buf, size_t len, int flags, |
| const struct sockaddr* addr, socklen_t addrlen) { |
| return s_kp->sendto(fd, buf, len, flags, addr, addrlen); |
| } |
| |
| ssize_t ki_sendmsg(int fd, const struct msghdr* msg, int flags) { |
| return s_kp->sendmsg(fd, msg, flags); |
| } |
| |
| int ki_setsockopt(int fd, int lvl, int optname, const void* optval, |
| socklen_t len) { |
| return s_kp->setsockopt(fd, lvl, optname, optval, len); |
| } |
| |
| int ki_shutdown(int fd, int how) { |
| return s_kp->shutdown(fd, how); |
| } |
| |
| int ki_socket(int domain, int type, int protocol) { |
| return s_kp->socket(domain, type, protocol); |
| } |
| |
| int ki_socketpair(int domain, int type, int protocol, int* sv) { |
| return s_kp->socketpair(domain, type, protocol, sv); |
| } |
| #endif // PROVIDES_SOCKET_API |