native_client_sdk/src/libraries/nacl_io/kernel_wrap.h

   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_