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 5 #ifndef LIBRARIES_NACL_IO_KERNEL_WRAP_H_ 6 #define LIBRARIES_NACL_IO_KERNEL_WRAP_H_ 7 8 #include <assert.h> 9 #include <signal.h> 10 #include <stdint.h> 11 #include <stdlib.h> 12 #include <sys/fcntl.h> 13 #include <sys/ioctl.h> 14 #include <sys/types.h> 15 16 #include "nacl_io/ossocket.h" 17 #include "nacl_io/ostypes.h" 18 #include "nacl_io/osutime.h" 19 #include "sdk_util/macros.h" 20 21 #if defined(__GLIBC__) 22 #include <sys/cdefs.h> 23 #define NOTHROW __THROW 24 #else 25 #define NOTHROW 26 #endif 27 28 // Most kernel intercept functions (ki_*) return -1 and set the global errno. 29 // However, the IRT wrappers are expected to return errno on failure. These 30 // macros are used in the wrappers to check that the ki_ function actually 31 // set errno and to its value. 32 #define RTN_ERRNO_IF(cond) \ 33 if (cond) { \ 34 assert(errno != 0); \ 35 return errno; \ 36 } 37 38 #define ERRNO_RTN(cond) \ 39 RTN_ERRNO_IF(cond < 0); \ 40 return 0; 41 42 #if defined(WIN32) 43 typedef int chmod_mode_t; 44 typedef int getcwd_size_t; 45 typedef int read_ssize_t; 46 typedef int write_ssize_t; 47 #define NAME(x) _##x 48 #else 49 typedef mode_t chmod_mode_t; 50 typedef size_t getcwd_size_t; 51 typedef ssize_t read_ssize_t; 52 typedef ssize_t write_ssize_t; 53 #define NAME(x) x 54 #endif 55 56 EXTERN_C_BEGIN 57 58 void kernel_wrap_init(void); 59 void kernel_wrap_uninit(void); 60 61 int NAME(access)(const char* path, int amode) NOTHROW; 62 int NAME(chdir)(const char* path) NOTHROW; 63 int NAME(chmod)(const char* path, chmod_mode_t mode) NOTHROW; 64 int chown(const char* path, uid_t owner, gid_t group) NOTHROW; 65 int NAME(close)(int fd); 66 int NAME(dup)(int oldfd) NOTHROW; 67 int NAME(dup2)(int oldfd, int newfd) NOTHROW; 68 int fchown(int fd, uid_t owner, gid_t group) NOTHROW; 69 #if defined(WIN32) 70 int _fstat32(int fd, struct _stat32* buf); 71 int _fstat64(int fd, struct _stat64* buf); 72 int _fstat32i64(int fd, struct _stat32i64* buf); 73 int _fstat64i32(int fd, struct _stat64i32* buf); 74 #elif !defined(__linux__) 75 struct stat; 76 extern int fstat(int fd, struct stat* buf) NOTHROW; 77 #endif 78 int fsync(int fd); 79 int ftruncate(int fd, off_t length) NOTHROW; 80 char* NAME(getcwd)(char* buf, getcwd_size_t size) NOTHROW; 81 char* getwd(char* buf) NOTHROW; 82 #if !defined(__BIONIC__) 83 int getdents(int fd, void* buf, unsigned int count) NOTHROW; 84 #else 85 struct dirent; 86 int getdents(unsigned int fd, struct dirent* buf, unsigned int count) NOTHROW; 87 #endif 88 int NAME(isatty)(int fd) NOTHROW; 89 int lchown(const char* path, uid_t owner, gid_t group) NOTHROW; 90 int link(const char* oldpath, const char* newpath) NOTHROW; 91 off_t NAME(lseek)(int fd, off_t offset, int whence) NOTHROW; 92 #if defined(WIN32) 93 int _mkdir(const char* path); 94 #else 95 int mkdir(const char* path, mode_t mode) NOTHROW; 96 #endif 97 void* mmap(void* addr, size_t length, int prot, int flags, int fd, 98 off_t offset) NOTHROW; 99 int mount(const char* source, const char* target, const char* filesystemtype, 100 unsigned long mountflags, const void* data) NOTHROW; 101 int munmap(void* addr, size_t length) NOTHROW; 102 int NAME(open)(const char* path, int oflag, ...); 103 read_ssize_t NAME(read)(int fd, void* buf, size_t nbyte); 104 int remove(const char* path) NOTHROW; 105 int NAME(rmdir)(const char* path) NOTHROW; 106 sighandler_t sigset(int sig, sighandler_t disp); 107 #if defined(WIN32) 108 int setenv(const char* name, const char* value, int overwrite); 109 int _stat32(const char* path, struct _stat32* buf); 110 int _stat64(const char* path, struct _stat64* buf); 111 int _stat32i64(const char* path, struct _stat32i64* buf); 112 int _stat64i32(const char* path, struct _stat64i32* buf); 113 #elif !defined(__linux__) 114 extern int stat(const char* path, struct stat* buf) NOTHROW; 115 #endif 116 int symlink(const char* oldpath, const char* newpath) NOTHROW; 117 int umount(const char* path) NOTHROW; 118 int NAME(unlink)(const char* path) NOTHROW; 119 int utime(const char* filename, const struct utimbuf* times); 120 read_ssize_t NAME(write)(int fd, const void* buf, size_t nbyte); 121 122 #ifdef PROVIDES_SOCKET_API 123 // Socket Functions 124 int accept(int fd, struct sockaddr* addr, socklen_t* len); 125 int bind(int fd, const struct sockaddr* addr, socklen_t len); 126 int connect(int fd, const struct sockaddr* addr, socklen_t len); 127 struct hostent* gethostbyname(const char* name); 128 int getpeername(int fd, struct sockaddr* addr, socklen_t* len); 129 int getsockname(int fd, struct sockaddr* addr, socklen_t* len); 130 int getsockopt(int fd, int lvl, int optname, void* optval, socklen_t* len); 131 int listen(int fd, int backlog); 132 ssize_t recv(int fd, void* buf, size_t len, int flags); 133 ssize_t recvfrom(int fd, 134 void* buf, 135 size_t len, 136 int flags, 137 struct sockaddr* addr, 138 socklen_t* addrlen); 139 ssize_t recvmsg(int fd, struct msghdr* msg, int flags); 140 ssize_t send(int fd, const void* buf, size_t len, int flags); 141 ssize_t sendto(int fd, 142 const void* buf, 143 size_t len, 144 int flags, 145 const struct sockaddr* addr, 146 socklen_t addrlen); 147 ssize_t sendmsg(int fd, const struct msghdr* msg, int flags); 148 int setsockopt(int fd, int lvl, int optname, const void* optval, socklen_t len); 149 int shutdown(int fd, int how); 150 int socket(int domain, int type, int protocol); 151 int socketpair(int domain, int type, int protocl, int* sv); 152 #endif // PROVIDES_SOCKET_API 153 154 EXTERN_C_END 155 156 #endif // LIBRARIES_NACL_IO_KERNEL_WRAP_H_ 157
