glo.h

MINIX2.0操作系统源码 MINIX2.0操作系统源码

/* EXTERN should be extern except in table.c */
#ifdef _TABLE
#undef EXTERN
#define EXTERN
#endif

/* Global variables. */
EXTERN struct mproc *mp;	/* ptr to 'mproc' slot of current process */
EXTERN int dont_reply;		/* normally 0; set to 1 to inhibit reply */
EXTERN int procs_in_use;	/* how many processes are marked as IN_USE */

/* The parameters of the call are kept here. */
EXTERN message mm_in;		/* the incoming message itself is kept here. */
EXTERN message mm_out;		/* the reply message is built up here. */
EXTERN int who;			/* caller's proc number */
EXTERN int mm_call;		/* system call number */

/* The following variables are used for returning results to the caller. */
EXTERN int err_code;		/* temporary storage for error number */
EXTERN int result2;		/* secondary result */
EXTERN char *res_ptr;		/* result, if pointer */

extern _PROTOTYPE (int (*call_vec[]), (void) );	/* system call handlers */
extern char core_name[];	/* file name where core images are produced */
EXTERN sigset_t core_sset;	/* which signals cause core images */