kernel_intercept.cc revision eb525c5499e34cc9c4b825d6d9e75bb07cc06ace
146a8600405e678718271f62c5994119b8d3241e9robertphillips@google.com/* Copyright (c) 2012 The Chromium Authors. All rights reserved. 246a8600405e678718271f62c5994119b8d3241e9robertphillips@google.com * Use of this source code is governed by a BSD-style license that can be 346a8600405e678718271f62c5994119b8d3241e9robertphillips@google.com * found in the LICENSE file. 446a8600405e678718271f62c5994119b8d3241e9robertphillips@google.com */ 546a8600405e678718271f62c5994119b8d3241e9robertphillips@google.com#include <errno.h> 646a8600405e678718271f62c5994119b8d3241e9robertphillips@google.com#include "nacl_io/kernel_intercept.h" 746a8600405e678718271f62c5994119b8d3241e9robertphillips@google.com#include "nacl_io/kernel_proxy.h" 80797c2cceadd7dfc2e7f9efa30b611d18efcdcddbsalomon@google.com#include "nacl_io/kernel_wrap.h" 946a8600405e678718271f62c5994119b8d3241e9robertphillips@google.com#include "nacl_io/pepper_interface.h" 1046a8600405e678718271f62c5994119b8d3241e9robertphillips@google.com#include "nacl_io/pepper_interface.h" 115c265d6fd3537c99304b153fc49066db3be46d46bsalomon@google.com#include "nacl_io/real_pepper_interface.h" 125c265d6fd3537c99304b153fc49066db3be46d46bsalomon@google.com 135c265d6fd3537c99304b153fc49066db3be46d46bsalomon@google.com 143ac5eb571bda3422a2868ddcf67ac731e7242a92reed@google.comstatic KernelProxy* s_kp; 153ac5eb571bda3422a2868ddcf67ac731e7242a92reed@google.com 163ac5eb571bda3422a2868ddcf67ac731e7242a92reed@google.comvoid ki_init(void* kp) { 173ac5eb571bda3422a2868ddcf67ac731e7242a92reed@google.com ki_init_ppapi(kp, 0, NULL); 185c265d6fd3537c99304b153fc49066db3be46d46bsalomon@google.com} 193ac5eb571bda3422a2868ddcf67ac731e7242a92reed@google.com 203ac5eb571bda3422a2868ddcf67ac731e7242a92reed@google.comvoid ki_init_ppapi(void* kp, 213ac5eb571bda3422a2868ddcf67ac731e7242a92reed@google.com PP_Instance instance, 223ac5eb571bda3422a2868ddcf67ac731e7242a92reed@google.com PPB_GetInterface get_browser_interface) { 235c265d6fd3537c99304b153fc49066db3be46d46bsalomon@google.com kernel_wrap_init(); 240797c2cceadd7dfc2e7f9efa30b611d18efcdcddbsalomon@google.com 250797c2cceadd7dfc2e7f9efa30b611d18efcdcddbsalomon@google.com if (kp == NULL) kp = new KernelProxy(); 260797c2cceadd7dfc2e7f9efa30b611d18efcdcddbsalomon@google.com s_kp = static_cast<KernelProxy*>(kp); 2746a8600405e678718271f62c5994119b8d3241e9robertphillips@google.com 2846a8600405e678718271f62c5994119b8d3241e9robertphillips@google.com PepperInterface* ppapi = NULL; 290797c2cceadd7dfc2e7f9efa30b611d18efcdcddbsalomon@google.com if (instance && get_browser_interface) 3088cb22b6b4816c7a9ca6c5b795965b4606f9eb7bcommit-bot@chromium.org ppapi = new RealPepperInterface(instance, get_browser_interface); 3146a8600405e678718271f62c5994119b8d3241e9robertphillips@google.com 3246a8600405e678718271f62c5994119b8d3241e9robertphillips@google.com s_kp->Init(ppapi); 330797c2cceadd7dfc2e7f9efa30b611d18efcdcddbsalomon@google.com} 3446a8600405e678718271f62c5994119b8d3241e9robertphillips@google.com 35int ki_is_initialized() { 36 return s_kp != NULL; 37} 38 39void ki_uninit() { 40 s_kp = NULL; 41} 42 43int ki_chdir(const char* path) { 44 return s_kp->chdir(path); 45} 46 47char* ki_getcwd(char* buf, size_t size) { 48 // gtest uses getcwd in a static initializer. If we haven't initialized the 49 // kernel-intercept yet, just return ".". 50 if (!ki_is_initialized()) { 51 if (size < 2) { 52 errno = ERANGE; 53 return NULL; 54 } 55 buf[0] = '.'; 56 buf[1] = 0; 57 return buf; 58 } 59 return s_kp->getcwd(buf, size); 60} 61 62char* ki_getwd(char* buf) { 63 return s_kp->getwd(buf); 64} 65 66int ki_dup(int oldfd) { 67 return s_kp->dup(oldfd); 68} 69 70int ki_dup2(int oldfd, int newfd) { 71 return s_kp->dup2(oldfd, newfd); 72} 73 74int ki_chmod(const char *path, mode_t mode) { 75 return s_kp->chmod(path, mode); 76} 77 78int ki_stat(const char *path, struct stat *buf) { 79 return s_kp->stat(path, buf); 80} 81 82int ki_mkdir(const char *path, mode_t mode) { 83 return s_kp->mkdir(path, mode); 84} 85 86int ki_rmdir(const char *path) { 87 return s_kp->rmdir(path); 88} 89 90int ki_mount(const char *source, const char *target, const char *filesystemtype, 91 unsigned long mountflags, const void *data) { 92 return s_kp->mount(source, target, filesystemtype, mountflags, data); 93} 94 95int ki_umount(const char *path) { 96 return s_kp->umount(path); 97} 98 99int ki_open(const char *path, int oflag) { 100 return s_kp->open(path, oflag); 101} 102 103ssize_t ki_read(int fd, void *buf, size_t nbyte) { 104 return s_kp->read(fd, buf, nbyte); 105} 106 107ssize_t ki_write(int fd, const void *buf, size_t nbyte) { 108 return s_kp->write(fd, buf, nbyte); 109} 110 111int ki_fstat(int fd, struct stat *buf){ 112 return s_kp->fstat(fd, buf); 113} 114 115int ki_getdents(int fd, void *buf, unsigned int count) { 116 return s_kp->getdents(fd, buf, count); 117} 118 119int ki_ftruncate(int fd, off_t length) { 120 return s_kp->ftruncate(fd, length); 121} 122 123int ki_fsync(int fd) { 124 return s_kp->fsync(fd); 125} 126 127int ki_isatty(int fd) { 128 if (!ki_is_initialized()) 129 return 0; 130 return s_kp->isatty(fd); 131} 132 133int ki_close(int fd) { 134 if (!ki_is_initialized()) 135 return 0; 136 return s_kp->close(fd); 137} 138 139off_t ki_lseek(int fd, off_t offset, int whence) { 140 return s_kp->lseek(fd, offset, whence); 141} 142 143int ki_remove(const char* path) { 144 return s_kp->remove(path); 145} 146 147int ki_unlink(const char* path) { 148 return s_kp->unlink(path); 149} 150 151int ki_access(const char* path, int amode) { 152 return s_kp->access(path, amode); 153} 154 155int ki_link(const char* oldpath, const char* newpath) { 156 return s_kp->link(oldpath, newpath); 157} 158 159int ki_symlink(const char* oldpath, const char* newpath) { 160 return s_kp->symlink(oldpath, newpath); 161} 162 163void* ki_mmap(void* addr, size_t length, int prot, int flags, int fd, 164 off_t offset) { 165 return s_kp->mmap(addr, length, prot, flags, fd, offset); 166} 167 168int ki_munmap(void* addr, size_t length) { 169 return s_kp->munmap(addr, length); 170} 171 172int ki_open_resource(const char* file) { 173 return s_kp->open_resource(file); 174} 175 176int ki_ioctl(int d, int request, char* argp) { 177 return s_kp->ioctl(d, request, argp); 178} 179 180int ki_chown(const char* path, uid_t owner, gid_t group) { 181 return s_kp->chown(path, owner, group); 182} 183 184int ki_fchown(int fd, uid_t owner, gid_t group) { 185 return s_kp->fchown(fd, owner, group); 186} 187 188int ki_lchown(const char* path, uid_t owner, gid_t group) { 189 return s_kp->lchown(path, owner, group); 190} 191 192int ki_utime(const char* filename, const struct utimbuf* times) { 193 return s_kp->utime(filename, times); 194} 195