Minix Source

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00006 * the headers, _ANSI should really be defined as nothing, but that would

00007 * break many library routines that use "#if _ANSI".)

00008

00009 * If _ANSI ends up being defined, a macro

00010 *

00011 * _PROTOTYPE(function, params)

00012 *

00013 * is defined. This macro expands in different ways, generating either

00014 * ANSI Standard C prototypes or old-style K&R (Kernighan & Ritchie)

00015 * prototypes, as needed. Finally, some programs use _CONST, _VOIDSTAR etc

00022

00023 #if __STDC__ == 1

00024 #define _ANSI 31459 /* compiler claims full ANSI conformance */

00025 #endif

00026

00027 #ifdef __GNUC__

00028 #define _ANSI 31459 /* gcc conforms enough even in non-ANSI mode */

00029 #endif

00030

00031 #ifdef _ANSI

00038 #define _VOID void

00039 #define _CONST const

00040 #define _VOLATILE volatile

00041 #define _SIZET size_t

00042

00043 #else

00044

00045 /* Throw away the parameters for K&R prototypes. */

00046 #define _PROTOTYPE(function, params) function()

00047 #define _ARGS(params) ()

00052 #define _VOLATILE

00053 #define _SIZET int

00054

00055 #endif /* _ANSI */

00056

00100 /* The <limits.h> header defines some basic sizes, both of the language types

00101 * (e.g., the number of bits in an integer), and of the operating system (e.g.

00102 * the number of characters in a file name.

00103 */

00104

00105 #ifndef _LIMITS_H

00106 #define _LIMITS_H

00107

00108 /* Definitions about chars (8 bits in MINIX, and signed). */

00109 #define CHAR_BIT 8 /* # bits in a char */

00116

00117 /* Definitions about shorts (16 bits in MINIX). */

00118 #define SHRT_MIN (-32767-1) /* minimum value of a short */

00119 #define SHRT_MAX 32767 /* maximum value of a short */

00120 #define USHRT_MAX 0xFFFF /* maximum value of unsigned short */

00121

00122 /* _EM_WSIZE is a compiler-generated symbol giving the word size in bytes. */

00123 #if _EM_WSIZE == 2

00124 #define INT_MIN (-32767-1) /* minimum value of a 16-bit int */

00125 #define INT_MAX 32767 /* maximum value of a 16-bit int */

00132 #define UINT_MAX 0xFFFFFFFF /* maximum value of an unsigned 32-bit int */

00133 #endif

00134

00135 /*Definitions about longs (32 bits in MINIX). */

00136 #define LONG_MIN (-2147483647L-1)/* minimum value of a long */

00137 #define LONG_MAX 2147483647L /* maximum value of a long */

00138 #define ULONG_MAX 0xFFFFFFFFL /* maximum value of an unsigned long */

00139

00140 /* Minimum sizes required by the POSIX P1003.1 standard (Table 2-3). */

00141 #ifdef _POSIX_SOURCE /* these are only visible for POSIX */

00146 #define _POSIX_MAX_INPUT 255 /* you can type 255 chars ahead */

00147 #define _POSIX_NAME_MAX 14 /* a file name may have 14 chars */

00148 #define _POSIX_NGROUPS_MAX 0 /* supplementary group IDs are optional */

00149 #define _POSIX_OPEN_MAX 16 /* a process may have 16 files open */

00150 #define _POSIX_PATH_MAX 255 /* a pathname may contain 255 chars */

00157 /* Some of these old names had better be defined when not POSIX. */

00158 #define _NO_LIMIT 100 /* arbitrary number; limit not enforced */

00159

00160 #define NGROUPS_MAX 0 /* supplemental group IDs not available */

00161 #if _EM_WSIZE > 2

00162 #define ARG_MAX 16384 /* # bytes of args + environ for exec() */

00163 #else

00164 #define ARG_MAX 4096 /* args + environ on small machines */

00165 #endif

00166 #define CHILD_MAX _NO_LIMIT /* MINIX does not limit children */

00173 #define PIPE_BUF 7168 /* # bytes in atomic write to a pipe */

00174 #define STREAM_MAX 20 /* must be the same as FOPEN_MAX in stdio.h */

00175 #define TZNAME_MAX 3 /* maximum bytes in a time zone name is 3 */

00176 #define SSIZE_MAX 32767 /* max defined byte count for read() */

00177

00178 #endif /* _POSIX_SOURCE */

00179

00180 #endif /* _LIMITS_H */

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00203 * MINIX, where they must be negative. For example, the READ system call is

00204 * executed internally by calling do_read(). This function returns either a

00205 * (negative) error number or a (positive) number of bytes actually read.

00206 *

00207 * To solve the problem of having the error numbers be negative inside the

00208 * the system and positive outside, the following mechanism is used. All the

00209 * definitions are are the form:

00210 *

00211 * #define EPERM (_SIGN 1)

00212 *

00217 */

00218

00219 #ifndef _ERRNO_H /* check if <errno.h> is already included */

00220 #define _ERRNO_H /* it is not included; note that fact */

00221

00228 #endif

00229

00230 extern int errno; /* place where the error numbers go */

00231

00232 /* Here are the numerical values of the error numbers. */

00233 #define _NERROR 70 /* number of errors */

00234

00235 #define EGENERIC (_SIGN 99) /* generic error */

00236 #define EPERM (_SIGN 1) /* operation not permitted */

00237 #define ENOENT (_SIGN 2) /* no such file or directory */

00244 #define EBADF (_SIGN 9) /* bad file descriptor */

00245 #define ECHILD (_SIGN 10) /* no child process */

00246 #define EAGAIN (_SIGN 11) /* resource temporarily unavailable */

00247 #define ENOMEM (_SIGN 12) /* not enough space */

00248 #define EACCES (_SIGN 13) /* permission denied */

00249 #define EFAULT (_SIGN 14) /* bad address */

00250 #define ENOTBLK (_SIGN 15) /* Extension: not a block special file */

00251 #define EBUSY (_SIGN 16) /* resource busy */

00252 #define EEXIST (_SIGN 17) /* file exists */

00253 #define EXDEV (_SIGN 18) /* improper link */

00260 #define ENOTTY (_SIGN 25) /* inappropriate I/O control operation */

00261 #define ETXTBSY (_SIGN 26) /* no longer used */

00262 #define EFBIG (_SIGN 27) /* file too large */

00263 #define ENOSPC (_SIGN 28) /* no space left on device */

00264 #define ESPIPE (_SIGN 29) /* invalid seek */

00265 #define EROFS (_SIGN 30) /* read-only file system */

00266 #define EMLINK (_SIGN 31) /* too many links */

00267 #define EPIPE (_SIGN 32) /* broken pipe */

00268 #define EDOM (_SIGN 33) /* domain error (from ANSI C std) */

00269 #define ERANGE (_SIGN 34) /* result too large (from ANSI C std) */

00274 #define ENOTEMPTY (_SIGN 39) /* directory not empty */

00275

00276 /* The following errors relate to networking. */

00277 #define EPACKSIZE (_SIGN 50) /* invalid packet size for some protocol */

00278 #define EOUTOFBUFS (_SIGN 51) /* not enough buffers left */

00285 #define EADDRINUSE (_SIGN 58) /* address in use */

00286 #define ECONNREFUSED (_SIGN 59) /* connection refused */

00287 #define ECONNRESET (_SIGN 60) /* connection reset */

00288 #define ETIMEDOUT (_SIGN 61) /* connection timed out */

00289 #define EURG (_SIGN 62) /* urgent data present */

00290 #define ENOURG (_SIGN 63) /* no urgent data present */

00291 #define ENOTCONN (_SIGN 64) /* no connection (yet or anymore) */

00292 #define ESHUTDOWN (_SIGN 65) /* a write call to a shutdown connection */

00293 #define ENOCONN (_SIGN 66) /* no such connection */

00294

00301 #define E_BAD_DEST -1001 /* destination address illegal */

00302 #define E_BAD_SRC -1002 /* source address illegal */

00303 #define E_TRY_AGAIN -1003 /* can't send-- tables full */

00304 #define E_OVERRUN -1004 /* interrupt for task that is not waiting */

00305 #define E_BAD_BUF -1005 /* message buf outside caller's addr space */

00306 #define E_TASK -1006 /* can't send to task */

00307 #define E_NO_MESSAGE -1007 /* RECEIVE failed: no message present */

00308 #define E_NO_PERM -1008 /* ordinary users can't send to tasks */

00309 #define E_BAD_FCN -1009 /* only valid fcns are SEND, RECEIVE, BOTH */

00310 #define E_BAD_ADDR -1010 /* bad address given to utility routine */

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00400 /* The <unistd.h> header contains a few miscellaneous manifest constants. */

00401

00402 #ifndef _UNISTD_H

00403 #define _UNISTD_H

00404

00405 /* POSIX requires size_t and ssize_t in <unistd.h> and elsewhere. */

00406 #ifndef _SIZE_T