| 1 | /*
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| 2 | * Copyright (c) 2011 Jiri Zarevucky
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| 3 | * Copyright (c) 2011 Petr Koupy
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| 4 | * All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | *
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| 10 | * - Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | * - Redistributions in binary form must reproduce the above copyright
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| 13 | * notice, this list of conditions and the following disclaimer in the
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| 14 | * documentation and/or other materials provided with the distribution.
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| 15 | * - The name of the author may not be used to endorse or promote products
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| 16 | * derived from this software without specific prior written permission.
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| 17 | *
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| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 28 | */
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| 29 |
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| 30 | /** @addtogroup libposix
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| 31 | * @{
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| 32 | */
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| 33 | /** @file Miscellaneous standard definitions.
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| 34 | */
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| 35 |
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| 36 | #ifndef POSIX_UNISTD_H_
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| 37 | #define POSIX_UNISTD_H_
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| 38 |
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| 39 | #include <stddef.h>
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| 40 | #include <sys/types.h>
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| 41 |
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| 42 | #define SEEK_SET 0
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| 43 | #define SEEK_CUR 1
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| 44 | #define SEEK_END 2
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| 45 |
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| 46 | /* Process Termination */
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| 47 | #define _exit exit
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| 48 |
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| 49 | /* Standard Streams */
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| 50 | #define STDIN_FILENO (fileno(stdin))
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| 51 | #define STDOUT_FILENO (fileno(stdout))
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| 52 | #define STDERR_FILENO (fileno(stderr))
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| 53 |
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| 54 | #define F_OK 0 /* Test for existence. */
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| 55 | #define X_OK 1 /* Test for execute permission. */
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| 56 | #define W_OK 2 /* Test for write permission. */
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| 57 | #define R_OK 4 /* Test for read permission. */
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| 58 |
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| 59 | __C_DECLS_BEGIN;
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| 60 |
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| 61 | extern char *optarg;
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| 62 | extern int optind, opterr, optopt;
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| 63 | extern int getopt(int, char *const [], const char *);
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| 64 |
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| 65 | /* Environment */
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| 66 | extern char **environ;
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| 67 |
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| 68 | /* Sleeping */
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| 69 | extern unsigned int sleep(unsigned int);
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| 70 |
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| 71 | /* Login Information */
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| 72 | extern char *getlogin(void);
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| 73 | extern int getlogin_r(char *name, size_t namesize);
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| 74 |
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| 75 | /* Identifying Terminals */
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| 76 | extern int isatty(int fd);
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| 77 |
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| 78 | /* Working Directory */
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| 79 | extern char *getcwd(char *buf, size_t size);
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| 80 | extern int chdir(const char *path);
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| 81 |
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| 82 | /* Query Memory Parameters */
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| 83 | extern int getpagesize(void);
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| 84 |
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| 85 | /* Process Identification */
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| 86 | extern pid_t getpid(void);
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| 87 | extern uid_t getuid(void);
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| 88 | extern gid_t getgid(void);
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| 89 |
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| 90 | /* File Manipulation */
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| 91 | extern int close(int fildes);
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| 92 | extern ssize_t read(int fildes, void *buf, size_t nbyte);
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| 93 | extern ssize_t write(int fildes, const void *buf, size_t nbyte);
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| 94 | extern int fsync(int fildes);
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| 95 | extern int rmdir(const char *path);
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| 96 | extern int unlink(const char *path);
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| 97 | extern int dup(int fildes);
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| 98 | extern int dup2(int fildes, int fildes2);
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| 99 |
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| 100 | #if defined(_LARGEFILE64_SOURCE) || defined(_GNU_SOURCE)
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| 101 | // FIXME: this should just be defined in <sys/types.h>, but for some reason
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| 102 | // build of coastline binutils on mips32 doesn't see the definition there
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| 103 | typedef int64_t off64_t;
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| 104 |
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| 105 | extern off64_t lseek64(int fildes, off64_t offset, int whence);
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| 106 | extern int ftruncate64(int fildes, off64_t length);
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| 107 | #endif
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| 108 |
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| 109 | #if _FILE_OFFSET_BITS == 64 && LONG_MAX == INT_MAX
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| 110 | #ifdef __GNUC__
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| 111 | extern off_t lseek(int fildes, off_t offset, int whence) __asm__("lseek64");
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| 112 | extern int ftruncate(int fildes, off_t length) __asm__("ftruncate64");
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| 113 | #else
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| 114 | extern off_t lseek64(int fildes, off_t offset, int whence);
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| 115 | extern int ftruncate64(int fildes, off_t length);
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| 116 | #define lseek lseek64
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| 117 | #define ftruncate ftruncate64
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| 118 | #endif
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| 119 | #else
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| 120 | extern off_t lseek(int fildes, off_t offset, int whence);
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| 121 | extern int ftruncate(int fildes, off_t length);
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| 122 | #endif
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| 123 |
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| 124 | /* File Accessibility */
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| 125 | extern int access(const char *path, int amode);
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| 126 |
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| 127 | /* System Parameters */
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| 128 | enum {
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| 129 | _SC_PHYS_PAGES,
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| 130 | _SC_AVPHYS_PAGES,
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| 131 | _SC_PAGESIZE,
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| 132 | _SC_CLK_TCK
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| 133 | };
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| 134 | extern long sysconf(int name);
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| 135 |
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| 136 | /* Path Configuration Parameters */
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| 137 | enum {
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| 138 | _PC_2_SYMLINKS,
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| 139 | _PC_ALLOC_SIZE_MIN,
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| 140 | _PC_ASYNC_IO,
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| 141 | _PC_CHOWN_RESTRICTED,
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| 142 | _PC_FILESIZEBITS,
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| 143 | _PC_LINK_MAX,
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| 144 | _PC_MAX_CANON,
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| 145 | _PC_MAX_INPUT,
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| 146 | _PC_NAME_MAX,
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| 147 | _PC_NO_TRUNC,
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| 148 | _PC_PATH_MAX,
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| 149 | _PC_PIPE_BUF,
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| 150 | _PC_PRIO_IO,
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| 151 | _PC_REC_INCR_XFER_SIZE,
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| 152 | _PC_REC_MIN_XFER_SIZE,
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| 153 | _PC_REC_XFER_ALIGN,
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| 154 | _PC_SYMLINK_MAX,
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| 155 | _PC_SYNC_IO,
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| 156 | _PC_VDISABLE
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| 157 | };
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| 158 | extern long pathconf(const char *path, int name);
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| 159 |
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| 160 | /* Creating a Process */
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| 161 | extern pid_t fork(void);
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| 162 |
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| 163 | /* Executing a File */
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| 164 | extern int execv(const char *path, char *const argv[]);
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| 165 | extern int execvp(const char *file, char *const argv[]);
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| 166 |
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| 167 | /* Creating a Pipe */
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| 168 | extern int pipe(int fildes[2]);
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| 169 |
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| 170 | /* Issue alarm signal. */
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| 171 | extern unsigned int alarm(unsigned int);
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| 172 |
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| 173 | __C_DECLS_END;
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| 174 |
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| 175 | #endif /* POSIX_UNISTD_H_ */
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| 176 |
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| 177 | /** @}
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| 178 | */
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