diff options
Diffstat (limited to 'kernel/tty_clk_STREAMS.c')
| -rw-r--r-- | kernel/tty_clk_STREAMS.c | 266 |
1 files changed, 0 insertions, 266 deletions
diff --git a/kernel/tty_clk_STREAMS.c b/kernel/tty_clk_STREAMS.c deleted file mode 100644 index 13b0a25f1d89..000000000000 --- a/kernel/tty_clk_STREAMS.c +++ /dev/null @@ -1,266 +0,0 @@ -/* tty_clk_STREAMS.c,v 3.1 1993/07/06 01:07:34 jbj Exp - * Timestamp STREAMS module for SunOS 4.1 - * - * Copyright 1991, Nick Sayer - * - * Special thanks to Greg Onufer for his debug assists. - * - * Should be PUSHed directly on top of a serial I/O channel. - * For any character in a user-designated set, adds a kernel - * timestamp to that character. - * - * BUGS: - * - * Only so many characters can be timestamped. This number, however, - * is adjustable. - * - * The null character ($00) cannot be timestamped. - * - * The M_DATA messages passed upstream will not be the same - * size as when they arrive from downstream, even if no - * timestamp character is in the message. This, however, - * should not affect anything. - * - */ - -#include "clk.h" -#if NCLK > 0 -/* - * How big should the messages we pass upstream be? - */ -#define MESSAGE_SIZE 128 - -#include <string.h> -#include <sys/types.h> -#include <sys/stream.h> -#include <sys/param.h> -#include <sys/time.h> -#include <sys/kernel.h> -#include <sys/user.h> -#include <sys/errno.h> -#include <sys/syslog.h> - -#include <sys/clkdefs.h> - -static struct module_info rminfo = { 0, "clk", 0, INFPSZ, 0, 0 }; -static struct module_info wminfo = { 0, "clk", 0, INFPSZ, 0, 0 }; -static int clkopen(), clkrput(), clkwput(), clkclose(); - -static struct qinit rinit = { clkrput, NULL, clkopen, clkclose, NULL, - &rminfo, NULL }; - -static struct qinit winit = { clkwput, NULL, NULL, NULL, NULL, - &wminfo, NULL }; - -struct streamtab clkinfo = { &rinit, &winit, NULL, NULL }; - -struct priv_data_type -{ - char in_use; - char string[CLK_MAXSTRSIZE]; -} priv_data[NCLK]; - -char first_open=1; - -/* - * God only knows why, but linking with strchr() fails - * on my system, so here's a renamed copy. - */ - -u_char *str_chr(s,c) -u_char *s; -int c; -{ - while (*s) - if(*s++ == c) - return (s-1); - return NULL; -} - -/*ARGSUSED*/ -static int clkopen(q, dev, flag, sflag) -queue_t *q; -dev_t dev; -int flag; -int sflag; -{ - int i; - -/* Damn it! We can't even have the global data struct properly - initialized! So we have a mark to tell us to init the global - data on the first open */ - - if (first_open) - { - first_open=0; - - for(i=0;i<NCLK;i++) - priv_data[i].in_use=0; - } - - for(i=0;i<NCLK;i++) - if(!priv_data[i].in_use) - { - priv_data[i].in_use++; - ((struct priv_data_type *) (q->q_ptr))=priv_data+i; - priv_data[i].string[0]=0; - return (0); - } - u.u_error = EBUSY; - return (OPENFAIL); -} - -/*ARGSUSED*/ -static int clkclose(q, flag) -queue_t *q; -int flag; -{ - ((struct priv_data_type *) (q->q_ptr))->in_use=0; - - return (0); -} - -/* - * Now the crux of the biscuit. - * - * If it's an M_DATA package, we take each character and pass - * it to clkchar. - */ - -void clkchar(); - -static int clkrput(q, mp) -queue_t *q; -mblk_t *mp; -{ - mblk_t *bp; - - switch(mp->b_datap->db_type) - { - case M_DATA: - clkchar(0,q,2); - for(bp=mp; bp!=NULL; bp=bp->b_cont) - { - while(bp->b_rptr < bp->b_wptr) - clkchar( ((u_char)*(bp->b_rptr++)) , q , 0 ); - } - clkchar(0,q,1); - freemsg(mp); - break; - default: - putnext(q,mp); - break; - } - -} - -/* - * If it's a matching M_IOCTL, handle it. - */ - -static int clkwput(q, mp) -queue_t *q; -mblk_t *mp; -{ - struct iocblk *iocp; - - switch(mp->b_datap->db_type) - { - case M_IOCTL: - iocp=(struct iocblk*) mp->b_rptr; - if (iocp->ioc_cmd==CLK_SETSTR) - { - strncpy( ((struct priv_data_type *) (RD(q)->q_ptr))->string, - (char *) mp->b_cont->b_rptr,CLK_MAXSTRSIZE); - /* make sure it's null terminated */ - ((struct priv_data_type *) (RD(q)->q_ptr))->string[CLK_MAXSTRSIZE-1]=0; - mp->b_datap->db_type = M_IOCACK; - qreply(q,mp); - } - else - putnext(q,mp); - break; - default: - putnext(q,mp); - break; - } -} - -/* - * Now clkchar. It takes a character, a queue pointer and an action - * flag and depending on the flag either: - * - * 0 - adds the character to the current message. If there's a - * timestamp to be done, do that too. If the message is less than - * 8 chars from being full, link in a new one, and set it up for - * the next call. - * - * 1 - sends the whole mess to Valhala. - * - * 2 - set things up. - * - * Yeah, it's an ugly hack. Complaints may be filed with /dev/null. - */ - - -void clkchar(c,q,f) - register u_char c; - queue_t *q; - char f; -{ - static char error; - static mblk_t *message,*mp; - struct timeval tv; - -/* Get a timestamp ASAP! */ - uniqtime(&tv); - - switch(f) - { - case 1: - if (!error) - putnext(q,message); - break; - case 2: - mp=message= (mblk_t*) allocb(MESSAGE_SIZE,BPRI_LO); - error=(message==NULL); - if (error) - log(LOG_ERR,"clk: cannot allocate message - data lost"); - break; - case 0: - if (error) /* If we had an error, forget it. */ - return; - - *mp->b_wptr++=c; /* Put the char away first. - - /* If it's in the special string, append a struct timeval */ - - if (str_chr( ((struct priv_data_type *) (q->q_ptr))->string , - c )!=NULL) - { - int i; - - for (i=0;i<sizeof(struct timeval);i++) - *mp->b_wptr++= *( ((char*)&tv) + i ); - } - - /* If we don't have space for a complete struct timeval, and a - char, it's time for a new mp block */ - - if (((mp->b_wptr-mp->b_rptr)+sizeof(struct timeval)+2)>MESSAGE_SIZE) - { - mp->b_cont= (mblk_t*) allocb(MESSAGE_SIZE,BPRI_LO); - error=(mp->b_cont==NULL); - if (error) - { - log(LOG_ERR,"clk: cannot allocate message - data lost"); - freemsg(message); - } - mp=mp->b_cont; - } - - break; - } -} - -#endif |