Ben Murdoch | ca12bfa | 2013-07-23 11:17:05 +0100 | [diff] [blame] | 1 | // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 5 | #include <errno.h> |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 6 | |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 7 | #include "nacl_io/kernel_intercept.h" |
| 8 | #include "nacl_io/kernel_proxy.h" |
| 9 | #include "nacl_io/kernel_wrap.h" |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 10 | #include "nacl_io/osmman.h" |
Torne (Richard Coles) | a36e592 | 2013-08-05 13:57:33 +0100 | [diff] [blame] | 11 | #include "nacl_io/ossocket.h" |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 12 | #include "nacl_io/pepper_interface.h" |
| 13 | #include "nacl_io/pepper_interface.h" |
| 14 | #include "nacl_io/real_pepper_interface.h" |
| 15 | |
Ben Murdoch | ca12bfa | 2013-07-23 11:17:05 +0100 | [diff] [blame] | 16 | using namespace nacl_io; |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 17 | |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 18 | #define ON_NOSYS_RETURN(x) \ |
| 19 | if (!ki_is_initialized()) { \ |
| 20 | errno = ENOSYS; \ |
| 21 | return x; \ |
| 22 | } |
| 23 | |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 24 | static KernelProxy* s_kp; |
| 25 | |
| 26 | void ki_init(void* kp) { |
| 27 | ki_init_ppapi(kp, 0, NULL); |
| 28 | } |
| 29 | |
| 30 | void ki_init_ppapi(void* kp, |
| 31 | PP_Instance instance, |
| 32 | PPB_GetInterface get_browser_interface) { |
| 33 | kernel_wrap_init(); |
| 34 | |
| 35 | if (kp == NULL) kp = new KernelProxy(); |
| 36 | s_kp = static_cast<KernelProxy*>(kp); |
| 37 | |
| 38 | PepperInterface* ppapi = NULL; |
| 39 | if (instance && get_browser_interface) |
| 40 | ppapi = new RealPepperInterface(instance, get_browser_interface); |
| 41 | |
| 42 | s_kp->Init(ppapi); |
| 43 | } |
| 44 | |
| 45 | int ki_is_initialized() { |
| 46 | return s_kp != NULL; |
| 47 | } |
| 48 | |
| 49 | void ki_uninit() { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 50 | kernel_wrap_uninit(); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 51 | s_kp = NULL; |
| 52 | } |
| 53 | |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 54 | |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 55 | int ki_chdir(const char* path) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 56 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 57 | return s_kp->chdir(path); |
| 58 | } |
| 59 | |
| 60 | char* ki_getcwd(char* buf, size_t size) { |
| 61 | // gtest uses getcwd in a static initializer. If we haven't initialized the |
| 62 | // kernel-intercept yet, just return ".". |
| 63 | if (!ki_is_initialized()) { |
| 64 | if (size < 2) { |
| 65 | errno = ERANGE; |
| 66 | return NULL; |
| 67 | } |
| 68 | buf[0] = '.'; |
| 69 | buf[1] = 0; |
| 70 | return buf; |
| 71 | } |
| 72 | return s_kp->getcwd(buf, size); |
| 73 | } |
| 74 | |
| 75 | char* ki_getwd(char* buf) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 76 | ON_NOSYS_RETURN(NULL); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 77 | return s_kp->getwd(buf); |
| 78 | } |
| 79 | |
| 80 | int ki_dup(int oldfd) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 81 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 82 | return s_kp->dup(oldfd); |
| 83 | } |
| 84 | |
| 85 | int ki_dup2(int oldfd, int newfd) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 86 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 87 | return s_kp->dup2(oldfd, newfd); |
| 88 | } |
| 89 | |
| 90 | int ki_chmod(const char *path, mode_t mode) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 91 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 92 | return s_kp->chmod(path, mode); |
| 93 | } |
| 94 | |
| 95 | int ki_stat(const char *path, struct stat *buf) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 96 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 97 | return s_kp->stat(path, buf); |
| 98 | } |
| 99 | |
| 100 | int ki_mkdir(const char *path, mode_t mode) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 101 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 102 | return s_kp->mkdir(path, mode); |
| 103 | } |
| 104 | |
| 105 | int ki_rmdir(const char *path) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 106 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 107 | return s_kp->rmdir(path); |
| 108 | } |
| 109 | |
| 110 | int ki_mount(const char *source, const char *target, const char *filesystemtype, |
| 111 | unsigned long mountflags, const void *data) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 112 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 113 | return s_kp->mount(source, target, filesystemtype, mountflags, data); |
| 114 | } |
| 115 | |
| 116 | int ki_umount(const char *path) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 117 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 118 | return s_kp->umount(path); |
| 119 | } |
| 120 | |
| 121 | int ki_open(const char *path, int oflag) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 122 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 123 | return s_kp->open(path, oflag); |
| 124 | } |
| 125 | |
| 126 | ssize_t ki_read(int fd, void *buf, size_t nbyte) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 127 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 128 | return s_kp->read(fd, buf, nbyte); |
| 129 | } |
| 130 | |
| 131 | ssize_t ki_write(int fd, const void *buf, size_t nbyte) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 132 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 133 | return s_kp->write(fd, buf, nbyte); |
| 134 | } |
| 135 | |
| 136 | int ki_fstat(int fd, struct stat *buf){ |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 137 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 138 | return s_kp->fstat(fd, buf); |
| 139 | } |
| 140 | |
| 141 | int ki_getdents(int fd, void *buf, unsigned int count) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 142 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 143 | return s_kp->getdents(fd, buf, count); |
| 144 | } |
| 145 | |
Torne (Richard Coles) | 90dce4d | 2013-05-29 14:40:03 +0100 | [diff] [blame] | 146 | int ki_ftruncate(int fd, off_t length) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 147 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 90dce4d | 2013-05-29 14:40:03 +0100 | [diff] [blame] | 148 | return s_kp->ftruncate(fd, length); |
| 149 | } |
| 150 | |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 151 | int ki_fsync(int fd) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 152 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 153 | return s_kp->fsync(fd); |
| 154 | } |
| 155 | |
| 156 | int ki_isatty(int fd) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 157 | ON_NOSYS_RETURN(0); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 158 | return s_kp->isatty(fd); |
| 159 | } |
| 160 | |
| 161 | int ki_close(int fd) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 162 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 163 | return s_kp->close(fd); |
| 164 | } |
| 165 | |
| 166 | off_t ki_lseek(int fd, off_t offset, int whence) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 167 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 168 | return s_kp->lseek(fd, offset, whence); |
| 169 | } |
| 170 | |
| 171 | int ki_remove(const char* path) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 172 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 173 | return s_kp->remove(path); |
| 174 | } |
| 175 | |
| 176 | int ki_unlink(const char* path) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 177 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 178 | return s_kp->unlink(path); |
| 179 | } |
| 180 | |
| 181 | int ki_access(const char* path, int amode) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 182 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 183 | return s_kp->access(path, amode); |
| 184 | } |
| 185 | |
| 186 | int ki_link(const char* oldpath, const char* newpath) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 187 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 188 | return s_kp->link(oldpath, newpath); |
| 189 | } |
| 190 | |
| 191 | int ki_symlink(const char* oldpath, const char* newpath) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 192 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 193 | return s_kp->symlink(oldpath, newpath); |
| 194 | } |
| 195 | |
| 196 | void* ki_mmap(void* addr, size_t length, int prot, int flags, int fd, |
| 197 | off_t offset) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 198 | ON_NOSYS_RETURN(MAP_FAILED); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 199 | return s_kp->mmap(addr, length, prot, flags, fd, offset); |
| 200 | } |
| 201 | |
| 202 | int ki_munmap(void* addr, size_t length) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 203 | ON_NOSYS_RETURN(-1); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 204 | return s_kp->munmap(addr, length); |
| 205 | } |
| 206 | |
| 207 | int ki_open_resource(const char* file) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 208 | ON_NOSYS_RETURN(-1); return s_kp->open_resource(file); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 209 | } |
Ben Murdoch | eb525c5 | 2013-07-10 11:40:50 +0100 | [diff] [blame] | 210 | |
| 211 | int ki_ioctl(int d, int request, char* argp) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 212 | ON_NOSYS_RETURN(-1); |
Ben Murdoch | eb525c5 | 2013-07-10 11:40:50 +0100 | [diff] [blame] | 213 | return s_kp->ioctl(d, request, argp); |
| 214 | } |
| 215 | |
| 216 | int ki_chown(const char* path, uid_t owner, gid_t group) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 217 | ON_NOSYS_RETURN(-1); |
Ben Murdoch | eb525c5 | 2013-07-10 11:40:50 +0100 | [diff] [blame] | 218 | return s_kp->chown(path, owner, group); |
| 219 | } |
| 220 | |
| 221 | int ki_fchown(int fd, uid_t owner, gid_t group) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 222 | ON_NOSYS_RETURN(-1); |
Ben Murdoch | eb525c5 | 2013-07-10 11:40:50 +0100 | [diff] [blame] | 223 | return s_kp->fchown(fd, owner, group); |
| 224 | } |
| 225 | |
| 226 | int ki_lchown(const char* path, uid_t owner, gid_t group) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 227 | ON_NOSYS_RETURN(-1); |
Ben Murdoch | eb525c5 | 2013-07-10 11:40:50 +0100 | [diff] [blame] | 228 | return s_kp->lchown(path, owner, group); |
| 229 | } |
| 230 | |
| 231 | int ki_utime(const char* filename, const struct utimbuf* times) { |
Ben Murdoch | 58e6fbe | 2013-07-26 10:20:38 +0100 | [diff] [blame] | 232 | ON_NOSYS_RETURN(-1); |
Ben Murdoch | eb525c5 | 2013-07-10 11:40:50 +0100 | [diff] [blame] | 233 | return s_kp->utime(filename, times); |
| 234 | } |
Torne (Richard Coles) | a36e592 | 2013-08-05 13:57:33 +0100 | [diff] [blame] | 235 | |
Ben Murdoch | 3240926 | 2013-08-07 11:04:47 +0100 | [diff] [blame] | 236 | int ki_poll(struct pollfd *fds, nfds_t nfds, int timeout) { |
| 237 | return s_kp->poll(fds, nfds, timeout); |
| 238 | } |
| 239 | |
| 240 | int ki_select(int nfds, fd_set* readfds, fd_set* writefds, |
| 241 | fd_set* exceptfds, struct timeval* timeout) { |
| 242 | return s_kp->select(nfds, readfds, writefds, exceptfds, timeout); |
| 243 | } |
| 244 | |
Torne (Richard Coles) | a36e592 | 2013-08-05 13:57:33 +0100 | [diff] [blame] | 245 | #ifdef PROVIDES_SOCKET_API |
| 246 | // Socket Functions |
| 247 | int ki_accept(int fd, struct sockaddr* addr, socklen_t* len) { |
| 248 | return s_kp->accept(fd, addr, len); |
| 249 | } |
| 250 | |
| 251 | int ki_bind(int fd, const struct sockaddr* addr, socklen_t len) { |
| 252 | return s_kp->bind(fd, addr, len); |
| 253 | } |
| 254 | |
| 255 | int ki_connect(int fd, const struct sockaddr* addr, socklen_t len) { |
| 256 | return s_kp->connect(fd, addr, len); |
| 257 | } |
| 258 | |
| 259 | int ki_getpeername(int fd, struct sockaddr* addr, socklen_t* len) { |
| 260 | return s_kp->getpeername(fd, addr, len); |
| 261 | } |
| 262 | |
| 263 | int ki_getsockname(int fd, struct sockaddr* addr, socklen_t* len) { |
| 264 | return s_kp->getsockname(fd, addr, len); |
| 265 | } |
| 266 | int ki_getsockopt(int fd, int lvl, int optname, void* optval, socklen_t* len) { |
| 267 | return s_kp->getsockopt(fd, lvl, optname, optval, len); |
| 268 | } |
| 269 | |
| 270 | int ki_listen(int fd, int backlog) { |
| 271 | return s_kp->listen(fd, backlog); |
| 272 | } |
| 273 | |
| 274 | ssize_t ki_recv(int fd, void* buf, size_t len, int flags) { |
| 275 | return s_kp->recv(fd, buf, len, flags); |
| 276 | } |
| 277 | |
| 278 | ssize_t ki_recvfrom(int fd, void* buf, size_t len, int flags, |
| 279 | struct sockaddr* addr, socklen_t* addrlen) { |
| 280 | return s_kp->recvfrom(fd, buf, len, flags, addr, addrlen); |
| 281 | } |
| 282 | |
| 283 | ssize_t ki_recvmsg(int fd, struct msghdr* msg, int flags) { |
| 284 | return s_kp->recvmsg(fd, msg, flags); |
| 285 | } |
| 286 | |
| 287 | ssize_t ki_send(int fd, const void* buf, size_t len, int flags) { |
| 288 | return s_kp->send(fd, buf, len, flags); |
| 289 | } |
| 290 | |
| 291 | ssize_t ki_sendto(int fd, const void* buf, size_t len, int flags, |
| 292 | const struct sockaddr* addr, socklen_t addrlen) { |
| 293 | return s_kp->sendto(fd, buf, len, flags, addr, addrlen); |
| 294 | } |
| 295 | |
| 296 | ssize_t ki_sendmsg(int fd, const struct msghdr* msg, int flags) { |
| 297 | return s_kp->sendmsg(fd, msg, flags); |
| 298 | } |
| 299 | |
| 300 | int ki_setsockopt(int fd, int lvl, int optname, const void* optval, |
| 301 | socklen_t len) { |
| 302 | return s_kp->setsockopt(fd, lvl, optname, optval, len); |
| 303 | } |
| 304 | |
| 305 | int ki_shutdown(int fd, int how) { |
| 306 | return s_kp->shutdown(fd, how); |
| 307 | } |
| 308 | |
| 309 | int ki_socket(int domain, int type, int protocol) { |
| 310 | return s_kp->socket(domain, type, protocol); |
| 311 | } |
| 312 | |
| 313 | int ki_socketpair(int domain, int type, int protocol, int* sv) { |
| 314 | return s_kp->socketpair(domain, type, protocol, sv); |
| 315 | } |
| 316 | #endif // PROVIDES_SOCKET_API |