1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #pragma once 30 31 #include <stddef.h> 32 #include <sys/cdefs.h> 33 #include <sys/types.h> 34 #include <sys/select.h> 35 36 #include <bits/fcntl.h> 37 #include <bits/getopt.h> 38 #include <bits/ioctl.h> 39 #include <bits/lockf.h> 40 #include <bits/posix_limits.h> 41 #include <bits/seek_constants.h> 42 #include <bits/sysconf.h> 43 44 __BEGIN_DECLS 45 46 #define STDIN_FILENO 0 47 #define STDOUT_FILENO 1 48 #define STDERR_FILENO 2 49 50 #define F_OK 0 51 #define X_OK 1 52 #define W_OK 2 53 #define R_OK 4 54 55 #define _PC_FILESIZEBITS 0 56 #define _PC_LINK_MAX 1 57 #define _PC_MAX_CANON 2 58 #define _PC_MAX_INPUT 3 59 #define _PC_NAME_MAX 4 60 #define _PC_PATH_MAX 5 61 #define _PC_PIPE_BUF 6 62 #define _PC_2_SYMLINKS 7 63 #define _PC_ALLOC_SIZE_MIN 8 64 #define _PC_REC_INCR_XFER_SIZE 9 65 #define _PC_REC_MAX_XFER_SIZE 10 66 #define _PC_REC_MIN_XFER_SIZE 11 67 #define _PC_REC_XFER_ALIGN 12 68 #define _PC_SYMLINK_MAX 13 69 #define _PC_CHOWN_RESTRICTED 14 70 #define _PC_NO_TRUNC 15 71 #define _PC_VDISABLE 16 72 #define _PC_ASYNC_IO 17 73 #define _PC_PRIO_IO 18 74 #define _PC_SYNC_IO 19 75 76 extern char** environ; 77 78 __noreturn void _exit(int __status); 79 80 pid_t fork(void); 81 pid_t vfork(void); 82 pid_t getpid(void); 83 pid_t gettid(void) __attribute_const__; 84 pid_t getpgid(pid_t __pid); 85 int setpgid(pid_t __pid, pid_t __pgid); 86 pid_t getppid(void); 87 pid_t getpgrp(void); 88 int setpgrp(void); 89 pid_t getsid(pid_t __pid) __INTRODUCED_IN(17); 90 pid_t setsid(void); 91 92 int execv(const char* __path, char* const* __argv); 93 int execvp(const char* __file, char* const* __argv); 94 int execvpe(const char* __file, char* const* __argv, char* const* __envp) __INTRODUCED_IN(21); 95 int execve(const char* __file, char* const* __argv, char* const* __envp); 96 int execl(const char* __path, const char* __arg0, ...) __attribute__((__sentinel__)); 97 int execlp(const char* __file, const char* __arg0, ...) __attribute__((__sentinel__)); 98 int execle(const char* __path, const char* __arg0, ... /*, char* const* __envp */) 99 __attribute__((__sentinel__(1))); 100 int fexecve(int __fd, char* const* __argv, char* const* __envp) __INTRODUCED_IN(28); 101 102 int nice(int __incr); 103 104 /** 105 * [setegid(2)](http://man7.org/linux/man-pages/man2/setegid.2.html) sets 106 * the effective group ID. 107 * 108 * On Android, this function only affects the calling thread, not all threads 109 * in the process. 110 * 111 * Returns 0 on success, and returns -1 and sets `errno` on failure. 112 */ 113 int setegid(gid_t __gid); 114 115 /** 116 * [seteuid(2)](http://man7.org/linux/man-pages/man2/seteuid.2.html) sets 117 * the effective user ID. 118 * 119 * On Android, this function only affects the calling thread, not all threads 120 * in the process. 121 * 122 * Returns 0 on success, and returns -1 and sets `errno` on failure. 123 */ 124 int seteuid(uid_t __uid); 125 126 /** 127 * [setgid(2)](http://man7.org/linux/man-pages/man2/setgid.2.html) sets 128 * the group ID. 129 * 130 * On Android, this function only affects the calling thread, not all threads 131 * in the process. 132 * 133 * Returns 0 on success, and returns -1 and sets `errno` on failure. 134 */ 135 int setgid(gid_t __gid); 136 137 /** 138 * [setregid(2)](http://man7.org/linux/man-pages/man2/setregid.2.html) sets 139 * the real and effective group IDs (use -1 to leave an ID unchanged). 140 * 141 * On Android, this function only affects the calling thread, not all threads 142 * in the process. 143 * 144 * Returns 0 on success, and returns -1 and sets `errno` on failure. 145 */ 146 int setregid(gid_t __rgid, gid_t __egid); 147 148 /** 149 * [setresgid(2)](http://man7.org/linux/man-pages/man2/setresgid.2.html) sets 150 * the real, effective, and saved group IDs (use -1 to leave an ID unchanged). 151 * 152 * On Android, this function only affects the calling thread, not all threads 153 * in the process. 154 * 155 * Returns 0 on success, and returns -1 and sets `errno` on failure. 156 */ 157 int setresgid(gid_t __rgid, gid_t __egid, gid_t __sgid); 158 159 /** 160 * [setresuid(2)](http://man7.org/linux/man-pages/man2/setresuid.2.html) sets 161 * the real, effective, and saved user IDs (use -1 to leave an ID unchanged). 162 * 163 * On Android, this function only affects the calling thread, not all threads 164 * in the process. 165 * 166 * Returns 0 on success, and returns -1 and sets `errno` on failure. 167 */ 168 int setresuid(uid_t __ruid, uid_t __euid, uid_t __suid); 169 170 /** 171 * [setreuid(2)](http://man7.org/linux/man-pages/man2/setreuid.2.html) sets 172 * the real and effective group IDs (use -1 to leave an ID unchanged). 173 * 174 * On Android, this function only affects the calling thread, not all threads 175 * in the process. 176 * 177 * Returns 0 on success, and returns -1 and sets `errno` on failure. 178 */ 179 int setreuid(uid_t __ruid, uid_t __euid); 180 181 /** 182 * [setuid(2)](http://man7.org/linux/man-pages/man2/setuid.2.html) sets 183 * the user ID. 184 * 185 * On Android, this function only affects the calling thread, not all threads 186 * in the process. 187 * 188 * Returns 0 on success, and returns -1 and sets `errno` on failure. 189 */ 190 int setuid(uid_t __uid); 191 192 uid_t getuid(void); 193 uid_t geteuid(void); 194 gid_t getgid(void); 195 gid_t getegid(void); 196 int getgroups(int __size, gid_t* __list); 197 int setgroups(size_t __size, const gid_t* __list); 198 int getresuid(uid_t* __ruid, uid_t* __euid, uid_t* __suid); 199 int getresgid(gid_t* __rgid, gid_t* __egid, gid_t* __sgid); 200 char* getlogin(void); 201 int getlogin_r(char* __buffer, size_t __buffer_size) __INTRODUCED_IN(28); 202 203 long fpathconf(int __fd, int __name); 204 long pathconf(const char* __path, int __name); 205 206 int access(const char* __path, int __mode); 207 int faccessat(int __dirfd, const char* __path, int __mode, int __flags) __INTRODUCED_IN(16); 208 int link(const char* __old_path, const char* __new_path); 209 int linkat(int __old_dir_fd, const char* __old_path, int __new_dir_fd, const char* __new_path, int __flags) __INTRODUCED_IN(21); 210 int unlink(const char* __path); 211 int unlinkat(int __dirfd, const char* __path, int __flags); 212 int chdir(const char* __path); 213 int fchdir(int __fd); 214 int rmdir(const char* __path); 215 int pipe(int __fds[2]); 216 #if defined(__USE_GNU) 217 int pipe2(int __fds[2], int __flags) __INTRODUCED_IN(9); 218 #endif 219 int chroot(const char* __path); 220 int symlink(const char* __old_path, const char* __new_path); 221 int symlinkat(const char* __old_path, int __new_dir_fd, const char* __new_path) __INTRODUCED_IN(21); 222 ssize_t readlink(const char* __path, char* __buf, size_t __buf_size); 223 ssize_t readlinkat(int __dir_fd, const char* __path, char* __buf, size_t __buf_size) 224 __INTRODUCED_IN(21); 225 int chown(const char* __path, uid_t __owner, gid_t __group); 226 int fchown(int __fd, uid_t __owner, gid_t __group); 227 int fchownat(int __dir_fd, const char* __path, uid_t __owner, gid_t __group, int __flags); 228 int lchown(const char* __path, uid_t __owner, gid_t __group); 229 char* getcwd(char* __buf, size_t __size); 230 231 void sync(void); 232 #if defined(__USE_GNU) 233 int syncfs(int __fd) __INTRODUCED_IN(28); 234 #endif 235 236 int close(int __fd); 237 238 ssize_t read(int __fd, void* __buf, size_t __count); 239 ssize_t write(int __fd, const void* __buf, size_t __count); 240 241 int dup(int __old_fd); 242 int dup2(int __old_fd, int __new_fd); 243 int dup3(int __old_fd, int __new_fd, int __flags) __INTRODUCED_IN(21); 244 int fsync(int __fd); 245 int fdatasync(int __fd) __INTRODUCED_IN(9); 246 247 /* See https://android.googlesource.com/platform/bionic/+/master/docs/32-bit-abi.md */ 248 #if defined(__USE_FILE_OFFSET64) 249 int truncate(const char* __path, off_t __length) __RENAME(truncate64) __INTRODUCED_IN(21); 250 off_t lseek(int __fd, off_t __offset, int __whence) __RENAME(lseek64); 251 ssize_t pread(int __fd, void* __buf, size_t __count, off_t __offset) 252 __RENAME(pread64) __INTRODUCED_IN(12); 253 ssize_t pwrite(int __fd, const void* __buf, size_t __count, off_t __offset) 254 __RENAME(pwrite64) __INTRODUCED_IN(12); 255 int ftruncate(int __fd, off_t __length) __RENAME(ftruncate64) __INTRODUCED_IN(12); 256 #else 257 int truncate(const char* __path, off_t __length); 258 off_t lseek(int __fd, off_t __offset, int __whence); 259 ssize_t pread(int __fd, void* __buf, size_t __count, off_t __offset); 260 ssize_t pwrite(int __fd, const void* __buf, size_t __count, off_t __offset); 261 int ftruncate(int __fd, off_t __length); 262 #endif 263 264 int truncate64(const char* __path, off64_t __length) __INTRODUCED_IN(21); 265 off64_t lseek64(int __fd, off64_t __offset, int __whence); 266 ssize_t pread64(int __fd, void* __buf, size_t __count, off64_t __offset) __INTRODUCED_IN(12); 267 ssize_t pwrite64(int __fd, const void* __buf, size_t __count, off64_t __offset) __INTRODUCED_IN(12); 268 int ftruncate64(int __fd, off64_t __length) __INTRODUCED_IN(12); 269 270 int pause(void); 271 unsigned int alarm(unsigned int __seconds); 272 unsigned int sleep(unsigned int __seconds); 273 int usleep(useconds_t __microseconds); 274 275 int gethostname(char* __buf, size_t __buf_size); 276 int sethostname(const char* __name, size_t __n) __INTRODUCED_IN(23); 277 278 int brk(void* __addr); 279 void* sbrk(ptrdiff_t __increment); 280 281 int isatty(int __fd); 282 char* ttyname(int __fd); 283 int ttyname_r(int __fd, char* __buf, size_t __buf_size) __INTRODUCED_IN(8); 284 285 int acct(const char* __path); 286 287 #if __ANDROID_API__ >= __ANDROID_API_L__ 288 int getpagesize(void) __INTRODUCED_IN(21); 289 #else 290 static __inline__ int getpagesize(void) { 291 return sysconf(_SC_PAGESIZE); 292 } 293 #endif 294 295 long syscall(long __number, ...); 296 297 int daemon(int __no_chdir, int __no_close); 298 299 #if defined(__arm__) || (defined(__mips__) && !defined(__LP64__)) 300 int cacheflush(long __addr, long __nbytes, long __cache); 301 /* __attribute__((deprecated("use __builtin___clear_cache instead"))); */ 302 #endif 303 304 pid_t tcgetpgrp(int __fd); 305 int tcsetpgrp(int __fd, pid_t __pid); 306 307 /* Used to retry syscalls that can return EINTR. */ 308 #define TEMP_FAILURE_RETRY(exp) ({ \ 309 __typeof__(exp) _rc; \ 310 do { \ 311 _rc = (exp); \ 312 } while (_rc == -1 && errno == EINTR); \ 313 _rc; }) 314 315 int getdomainname(char* __buf, size_t __buf_size) __INTRODUCED_IN(26); 316 int setdomainname(const char* __name, size_t __n) __INTRODUCED_IN(26); 317 318 void swab(const void* __src, void* __dst, ssize_t __byte_count) __INTRODUCED_IN(28); 319 320 #if defined(__BIONIC_INCLUDE_FORTIFY_HEADERS) 321 #define _UNISTD_H_ 322 #include <bits/fortify/unistd.h> 323 #undef _UNISTD_H_ 324 #endif 325 326 __END_DECLS 327
