book.t

操作系统设计与实现源码

00655	#endif /* _STRING_H */





++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
				include/signal.h	 	 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

00700	/* The <signal.h> header defines all the ANSI and POSIX signals.
00701	 * MINIX supports all the signals required by POSIX. They are defined below.
00702	 * Some additional signals are also supported.
00703	 */
00704	
00705	#ifndef _SIGNAL_H
00706	#define _SIGNAL_H
00707	
00708	#ifndef _ANSI_H
00709	#include <ansi.h>
00710	#endif
00711	
00712	/* Here are types that are closely associated with signal handling. */
00713	typedef int sig_atomic_t;
00714	
00715	#ifdef _POSIX_SOURCE
00716	#ifndef _SIGSET_T
00717	#define _SIGSET_T
00718	typedef unsigned long sigset_t;
00719	#endif
00720	#endif
00721	
00722	#define _NSIG             16    /* number of signals used */
00723	
00724	#define SIGHUP             1    /* hangup */
.Ep 10 include/signal.h
00725	#define SIGINT             2    /* interrupt (DEL) */
00726	#define SIGQUIT            3    /* quit (ASCII FS) */
00727	#define SIGILL             4    /* illegal instruction */
00728	#define SIGTRAP            5    /* trace trap (not reset when caught) */
00729	#define SIGABRT            6    /* IOT instruction */
00730	#define SIGIOT             6    /* SIGABRT for people who speak PDP-11 */
00731	#define SIGUNUSED          7    /* spare code */
00732	#define SIGFPE             8    /* floating point exception */
00733	#define SIGKILL            9    /* kill (cannot be caught or ignored) */
00734	#define SIGUSR1           10    /* user defined signal # 1 */
00735	#define SIGSEGV           11    /* segmentation violation */
00736	#define SIGUSR2           12    /* user defined signal # 2 */
00737	#define SIGPIPE           13    /* write on a pipe with no one to read it */
00738	#define SIGALRM           14    /* alarm clock */
00739	#define SIGTERM           15    /* software termination signal from kill */
00740	
00741	#define SIGEMT             7    /* obsolete */
00742	#define SIGBUS            10    /* obsolete */
00743	
00744	/* POSIX requires the following signals to be defined, even if they are
00745	 * not supported.  Here are the definitions, but they are not supported.
00746	 */
00747	#define SIGCHLD           17    /* child process terminated or stopped */
00748	#define SIGCONT           18    /* continue if stopped */
00749	#define SIGSTOP           19    /* stop signal */
00750	#define SIGTSTP           20    /* interactive stop signal */
00751	#define SIGTTIN           21    /* background process wants to read */
00752	#define SIGTTOU           22    /* background process wants to write */
00753	
00754	/* The sighandler_t type is not allowed unless _POSIX_SOURCE is defined. */
00755	#ifdef _POSIX_SOURCE
00756	#define __sighandler_t sighandler_t
00757	#else
00758	typedef void (*__sighandler_t) (int);
00759	#endif
00760	
00761	/* Macros used as function pointers. */
00762	#define SIG_ERR    ((__sighandler_t) -1)        /* error return */
00763	#define SIG_DFL    ((__sighandler_t)  0)        /* default signal handling */
00764	#define SIG_IGN    ((__sighandler_t)  1)        /* ignore signal */
00765	#define SIG_HOLD   ((__sighandler_t)  2)        /* block signal */
00766	#define SIG_CATCH  ((__sighandler_t)  3)        /* catch signal */
00767	
00768	#ifdef _POSIX_SOURCE
00769	struct sigaction {
00770	  __sighandler_t sa_handler;    /* SIG_DFL, SIG_IGN, or pointer to function */
00771	  sigset_t sa_mask;             /* signals to be blocked during handler */
00772	  int sa_flags;                 /* special flags */
00773	};
00774	
00775	/* Fields for sa_flags. */
00776	#define SA_ONSTACK   0x0001     /* deliver signal on alternate stack */
00777	#define SA_RESETHAND 0x0002     /* reset signal handler when signal caught */
00778	#define SA_NODEFER   0x0004     /* don't block signal while catching it */
00779	#define SA_RESTART   0x0008     /* automatic system call restart */
00780	#define SA_SIGINFO   0x0010     /* extended signal handling */
00781	#define SA_NOCLDWAIT 0x0020     /* don't create zombies */
00782	#define SA_NOCLDSTOP 0x0040     /* don't receive SIGCHLD when child stops */
00783	
00784	/* POSIX requires these values for use with sigprocmask(2). */
.Op 11 include/signal.h
00785	#define SIG_BLOCK          0    /* for blocking signals */
00786	#define SIG_UNBLOCK        1    /* for unblocking signals */
00787	#define SIG_SETMASK        2    /* for setting the signal mask */
00788	#define SIG_INQUIRE        4    /* for internal use only */
00789	#endif  /* _POSIX_SOURCE */
00790	
00791	/* POSIX and ANSI function prototypes. */
00792	_PROTOTYPE( int raise, (int _sig)                                       );
00793	_PROTOTYPE( __sighandler_t signal, (int _sig, __sighandler_t _func)     );
00794	
00795	#ifdef _POSIX_SOURCE
00796	_PROTOTYPE( int kill, (pid_t _pid, int _sig)                            );
00797	_PROTOTYPE( int sigaction,
00798	    (int _sig, const struct sigaction *_act, struct sigaction *_oact)   );
00799	_PROTOTYPE( int sigaddset, (sigset_t *_set, int _sig)                   );
00800	_PROTOTYPE( int sigdelset, (sigset_t *_set, int _sig)                   );
00801	_PROTOTYPE( int sigemptyset, (sigset_t *_set)                           );
00802	_PROTOTYPE( int sigfillset, (sigset_t *_set)                            );
00803	_PROTOTYPE( int sigismember, (sigset_t *_set, int _sig)                 );
00804	_PROTOTYPE( int sigpending, (sigset_t *_set)                            );
00805	_PROTOTYPE( int sigprocmask,
00806	            (int _how, const sigset_t *_set, sigset_t *_oset)           );
00807	_PROTOTYPE( int sigsuspend, (const sigset_t *_sigmask)                  );
00808	#endif
00809	
00810	#endif /* _SIGNAL_H */





++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
				include/fcntl.h	 	 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

00900	/* The <fcntl.h> header is needed by the open() and fcntl() system calls,
00901	 * which  have a variety of parameters and flags.  They are described here.  
00902	 * The formats of the calls to each of these are:
00903	 *
00904	 *      open(path, oflag [,mode])       open a file
00905	 *      fcntl(fd, cmd [,arg])           get or set file attributes
00906	 * 
00907	 */
00908	
00909	#ifndef _FCNTL_H
00910	#define _FCNTL_H
00911	
00912	/* These values are used for cmd in fcntl().  POSIX Table 6-1.  */
00913	#define F_DUPFD            0    /* duplicate file descriptor */
00914	#define F_GETFD            1    /* get file descriptor flags */
00915	#define F_SETFD            2    /* set file descriptor flags */
00916	#define F_GETFL            3    /* get file status flags */
00917	#define F_SETFL            4    /* set file status flags */
00918	#define F_GETLK            5    /* get record locking information */
00919	#define F_SETLK            6    /* set record locking information */
00920	#define F_SETLKW           7    /* set record locking info; wait if blocked */
00921	
00922	/* File descriptor flags used for fcntl().  POSIX Table 6-2. */
00923	#define FD_CLOEXEC         1    /* close on exec flag for third arg of fcntl */
00924	
.Ep 12 include/fcntl.h
00925	/* L_type values for record locking with fcntl().  POSIX Table 6-3. */
00926	#define F_RDLCK            1    /* shared or read lock */
00927	#define F_WRLCK            2    /* exclusive or write lock */
00928	#define F_UNLCK            3    /* unlock */
00929	
00930	/* Oflag values for open().  POSIX Table 6-4. */
00931	#define O_CREAT        00100    /* creat file if it doesn't exist */
00932	#define O_EXCL         00200    /* exclusive use flag */
00933	#define O_NOCTTY       00400    /* do not assign a controlling terminal */
00934	#define O_TRUNC        01000    /* truncate flag */
00935	
00936	/* File status flags for open() and fcntl().  POSIX Table 6-5. */
00937	#define O_APPEND       02000    /* set append mode */
00938	#define O_NONBLOCK     04000    /* no delay */
00939	
00940	/* File access modes for open() and fcntl().  POSIX Table 6-6. */
00941	#define O_RDONLY           0    /* open(name, O_RDONLY) opens read only */
00942	#define O_WRONLY           1    /* open(name, O_WRONLY) opens write only */
00943	#define O_RDWR             2    /* open(name, O_RDWR) opens read/write */
00944	
00945	/* Mask for use with file access modes.  POSIX Table 6-7. */
00946	#define O_ACCMODE         03    /* mask for file access modes */
00947	
00948	/* Struct used for locking.  POSIX Table 6-8. */
00949	struct flock {
00950	  short l_type;                 /* type: F_RDLCK, F_WRLCK, or F_UNLCK */
00951	  short l_whence;               /* flag for starting offset */
00952	  off_t l_start;                /* relative offset in bytes */
00953	  off_t l_len;                  /* size; if 0, then until EOF */
00954	  pid_t l_pid;                  /* process id of the locks' owner */
00955	};
00956	
00957	
00958	/* Function Prototypes. */
00959	#ifndef _ANSI_H
00960	#include <ansi.h>
00961	#endif
00962	
00963	_PROTOTYPE( int creat, (const char *_path, Mode_t _mode)                );
00964	_PROTOTYPE( int fcntl, (int _filedes, int _cmd, ...)                    );
00965	_PROTOTYPE( int open,  (const char *_path, int _oflag, ...)             );
00966	
00967	#endif /* _FCNTL_H */



++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
				include/stdlib.h	 	 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

01000	/* The <stdlib.h> header defines certain common macros, types, and functions.*/
01001	
01002	#ifndef _STDLIB_H
01003	#define _STDLIB_H
01004	
01005	/* The macros are NULL, EXIT_FAILURE, EXIT_SUCCESS, RAND_MAX, and MB_CUR_MAX.*/
01006	#define NULL    ((void *)0)
01007	
01008	#define EXIT_FAILURE       1    /* standard error return using exit() */
01009	#define EXIT_SUCCESS       0    /* successful return using exit() */
.Op 13 include/stdlib.h
01010	#define RAND_MAX       32767    /* largest value generated by rand() */
01011	#define MB_CUR_MAX         1    /* max value of multibyte character in MINIX */
01012	
01013	typedef struct { int quot, rem; } div_t;
01014	typedef struct { long quot, rem; } ldiv_t;
01015	
01016	/* The types are size_t, wchar_t, div_t, and ldiv_t. */
01017	#ifndef _SIZE_T
01018	#define _SIZE_T
01019	typedef unsigned int size_t;    /* type returned by sizeof */
01020	#endif
01021	
01022	#ifndef _WCHAR_T
01023	#define _WCHAR_T
01024	typedef char wchar_t;           /* type expanded character set */
01025	#endif
01026	
01027	/* Function Prototypes. */
01028	#ifndef _ANSI_H
01029	#include <ansi.h>
01030	#endif
01031	
01032	_PROTOTYPE( void abort, (void)                                          );
01033	_PROTOTYPE( int abs, (int _j)                                           );
01034	_PROTOTYPE( int atexit, (void (*_func)(void))                           );
01035	_PROTOTYPE( double atof, (const char *_nptr)                            );
01036	_PROTOTYPE( int atoi, (const char *_nptr)                               );
01037	_PROTOTYPE( long atol, (const char *_nptr)                              );
01038	_PROTOTYPE( void *calloc, (size_t _nmemb, size_t _size)                 );
01039	_PROTOTYPE( div_t div, (int _numer, int _denom)                         );
01040	_PROTOTYPE( void exit, (int _status)                                    );
01041	_PROTOTYPE( void free, (void *_ptr)                                     );
01042	_PROTOTYPE( char *getenv, (const char *_name)                           );
01043	_PROTOTYPE( long labs, (long _j)                                        );
01044	_PROTOTYPE( ldiv_t ldiv, (long _numer, long _denom)                     );
01045	_PROTOTYPE( void *malloc, (size_t _size)                                );
01046	_PROTOTYPE( int mblen, (const char *_s, size_t _n)                      );
01047	_PROTOTYPE( size_t mbstowcs, (wchar_t *_pwcs, const char *_s, size_t _n));
01048	_PROTOTYPE( int mbtowc, (wchar_t *_pwc, const char *_s, size_t _n)      );
01049	_PROTOTYPE( int rand, (void)                                            );
01050	_PROTOTYPE( void *realloc, (void *_ptr, size_t _size)                   );
01051	_PROTOTYPE( void srand, (unsigned int _seed)                            );
01052	_PROTOTYPE( double strtod, (const char *_nptr, char **_endptr)          );
01053	_PROTOTYPE( long strtol, (const char *_nptr, char **_endptr, int _base) );
01054	_PROTOTYPE( int system, (const char *_string)                           );
01055	_PROTOTYPE( size_t wcstombs, (char *_s, const wchar_t *_pwcs, size_t _n));
01056	_PROTOTYPE( int wctomb, (char *_s, wchar_t _wchar)                      );
01057	_PROTOTYPE( void *bsearch, (const void *_key, const void *_base, 
01058	        size_t _nmemb, size_t _size, 
01059	        int (*compar) (const void *, const void *))                     );
01060	_PROTOTYPE( void qsort, (void *_base, size_t _nmemb, size_t _size,