diff options
author | Jim Blandy <jimb@redhat.com> | 1992-01-13 21:48:08 +0000 |
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committer | Jim Blandy <jimb@redhat.com> | 1992-01-13 21:48:08 +0000 |
commit | 265a9e559da4ac72d154ecd638c51801b3e97847 (patch) | |
tree | 633e4dc50761c2cd5201a7874e23eee9e51aecea /src/hftctl.c | |
parent | d427b66a664c0e1ffc818dfa5b87b45b4857d2ae (diff) | |
download | emacs-265a9e559da4ac72d154ecd638c51801b3e97847.tar.gz |
*** empty log message ***
Diffstat (limited to 'src/hftctl.c')
-rw-r--r-- | src/hftctl.c | 420 |
1 files changed, 220 insertions, 200 deletions
diff --git a/src/hftctl.c b/src/hftctl.c index 3e3788aa709..1e038725777 100644 --- a/src/hftctl.c +++ b/src/hftctl.c @@ -9,8 +9,8 @@ /* #include <sys/hft.h> */ /* */ /* int hftctl(fildes, request, arg ) */ -/* int fildes, request ; */ -/* char *arg ; */ +/* int fildes, request; */ +/* char *arg; */ /* */ /* Description: */ /* */ @@ -49,222 +49,241 @@ #include <sys/ioctl.h> #include <sys/signal.h> #include <sys/devinfo.h> +#include <termios.h> #include <termio.h> #include <sys/hft.h> -#include <termios.h> #include <sys/tty.h> /* #include <sys/pty.h> */ #define REMOTE 0x01 #undef ioctl -static char SCCSid[] = "com/gnuemacs/src,3.1,9021-90/05/03-5/3/90" ; +static char SCCSid[] = "com/gnuemacs/src,3.1,9021-90/05/03-5/3/90"; /*************** LOCAL DEFINES **********************************/ -typedef int (*FUNC)() ; /* pointer to a function */ +typedef int (*FUNC)(); /* pointer to a function */ #define QDEV ((HFQPDEVCH<<8)|HFQPDEVCL) #define QLOC ((HFQLOCCH<<8)|HFQLOCCL) #define QPS ((HFQPRESCH<<8)|HFQPRESCL) +#ifndef TCGETS +#define TCGETS TCGETA +#endif +#ifndef TCSETS +#define TCSETS TCSETA +#endif + /*************** EXTERNAL / GLOBAL DATA AREA ********************/ - int hfqry() ; - int hfskbd() ; - char *malloc() ; + int hfqry(); + int hfskbd(); + char *malloc(); -extern int errno ; -static jmp_buf hftenv ; -static int is_ack_vtd ; -static FUNC sav_alrm ; +extern int errno; +static jmp_buf hftenv; +static int is_ack_vtd; +static FUNC sav_alrm; static struct hfctlreq req = { 0x1b,'[','x',0,0,0,21,HFCTLREQCH,HFCTLREQCL}; static struct hfctlack ACK = { 0x1b,'[','x',0,0,0,21,HFCTLACKCH,HFCTLACKCL}; - /* FUNC signal() ; */ + /* FUNC signal(); */ /*************** LOCAL MACROS ***********************************/ #define HFTYPE(p) ((p->hf_typehi<<8)|(p->hf_typelo)) -#define BYTE4(p) ( (p)[0]<<24 | (p)[1]<<16 | (p)[2]<<8 | (p)[3] ) +#define BYTE4(p) ((p)[0]<<24 | (p)[1]<<16 | (p)[2]<<8 | (p)[3]) /* read a buffer */ #define RD_BUF(f,p,l) \ - while ( (l) ) \ - if ( ( j = read((f),(p),(l)) ) < 0 ) \ - if ( errno != EINTR ) return (-1) ; \ - else continue ; \ - else { (l)-=j ; (p)+=j ; } + while ((l)) \ + if ((j = read((f),(p),(l))) < 0) \ + if (errno != EINTR) return (-1); \ + else continue; \ + else { (l) -= j; (p) += j; } + +/*************** function prototypes ***************************/ +#ifdef __STDC__ +static GT_ACK (int fd, int req, char *buf); +static WR_REQ (int fd, int request, int cmdlen, char *cmd, int resplen); +static hft_alrm(int sig); +#else +static GT_ACK (); +static WR_REQ (); +static hft_alrm (); +#endif /*************** HFTCTL FUNCTION *******************************/ -hftctl( fd, request, arg ) - int fd ; - int request ; - union { - struct hfintro *intro ; - struct hfquery *query ; - char *c ; - } arg ; +hftctl (fd, request, arg) + int fd; + int request; + union { + struct hfintro *intro; + struct hfquery *query; + char *c; + } arg; { - int i ; - int fd_flag ; /* fcntl flags */ -register union { - struct hfintro *cmd ; /* p.cmd - intro des. */ - struct hfqphdevc *ph ; /* p.ph - physical dev.*/ - char *c ; /* p.c - char ptr */ - } p ; /* general pointer */ - int pty_new ; /* pty modes */ - int pty_old ; - int retcode ; - struct termios term_new ; /* terminal attributes */ - struct termios term_old ; - struct devinfo devInfo ; /* defined in sys/devinfo.h */ - - -if ( ioctl( fd, IOCINFO, &devInfo ) == -1 ) return(-1) ; - -if ( devInfo.devtype != DD_PSEU ) /* is it a pty? */ - return (ioctl(fd, request, arg) ) ; /* no, do IOCTL */ - - /******* START PTY **************/ - /** Pty found, possible HFT */ - /** set new file des as raw */ - /** as you can. */ - /********************************/ - - /* Get current state of file */ - /* descriptor & save */ -if ( ( fd_flag = fcntl( fd, F_GETFL, 0 ) ) == -1 ) return (-1) ; -if ( ioctl( fd, TCGETS, &term_old ) == -1 ) return (-1) ; - /* set terminal attr to raw */ - /* and to delay on read */ -pty_new = pty_old | REMOTE ; -memcpy( &term_new, &term_old, sizeof( term_new ) ) ; -term_new.c_iflag = 0 ; -term_new.c_oflag = 0 ; -term_new.c_lflag = 0 ; -/* term_new.c_line = 0 ; */ -for ( i = 1 ; i <= 5 ; i++ ) -term_new.c_cc[i] = 0 ; -term_new.c_cc[0] = -1 ; -ioctl( fd, TCSETS, &term_new ) ; -if ( fcntl( fd, F_SETFL, fd_flag & ~O_NDELAY ) == -1 ) - return(-1) ; - /* call spacific function */ -if ( request == HFSKBD ) - retcode = hfskbd( fd, request, arg.c) ; -else /* assume HFQUERY */ - retcode = hfqry( fd, request, arg.c) ; - -fcntl( fd, F_SETFL, fd_flag ) ; /* reset terminal to original */ -ioctl( fd, TCSETS, &term_old ) ; - - -return( retcode ) ; /* return error */ + int i; + int fd_flag; /* fcntl flags */ + register union { + struct hfintro *cmd; /* p.cmd - intro des. */ + struct hfqphdevc *ph; /* p.ph - physical dev.*/ + char *c; /* p.c - char ptr */ + } p; /* general pointer */ + int pty_new; /* pty modes */ + int pty_old; + int retcode; + struct termios term_new; /* terminal attributes */ + struct termios term_old; + struct devinfo devInfo; /* defined in sys/devinfo.h */ + + + if (ioctl (fd, IOCINFO, &devInfo) == -1) return(-1); + + if (devInfo.devtype != DD_PSEU) /* is it a pty? */ + return (ioctl(fd, request, arg)); /* no, do IOCTL */ + + /******* START PTY **************/ + /** Pty found, possible HFT */ + /** set new file des as raw */ + /** as you can. */ + /********************************/ + + /* Get current state of file */ + /* descriptor & save */ + if ((fd_flag = fcntl (fd, F_GETFL, 0)) == -1) return (-1); + if (ioctl (fd, TCGETS, &term_old) == -1) return (-1); + /* set terminal attr to raw */ + /* and to delay on read */ + pty_new = pty_old | REMOTE; + memcpy (&term_new, &term_old, sizeof (term_new)); + term_new.c_iflag = 0; + term_new.c_oflag = 0; + term_new.c_lflag = 0; + /* term_new.c_line = 0; */ + for (i = 1; i <= 5; i++) + term_new.c_cc[i] = 0; + term_new.c_cc[0] = -1; + ioctl (fd, TCSETS, &term_new); + if (fcntl (fd, F_SETFL, fd_flag & ~O_NDELAY) == -1) + return(-1); + /* call spacific function */ + if (request == HFSKBD) + retcode = hfskbd (fd, request, arg.c); + else /* assume HFQUERY */ + retcode = hfqry (fd, request, arg.c); + + fcntl (fd, F_SETFL, fd_flag); /* reset terminal to original */ + ioctl (fd, TCSETS, &term_old); + + + return (retcode); /* return error */ } /*************** HFSKBD FUNCTION ******************************/ -static hfskbd(fd, request, arg ) - int fd ; - int request ; - struct hfbuf *arg ; +static int +hfskbd (fd, request, arg) + int fd; + int request; + struct hfbuf *arg; { -WR_REQ(fd, request, arg->hf_buflen, arg->hf_bufp,0) ; -return( GT_ACK(fd, request, arg->hf_bufp) ) ; + WR_REQ(fd, request, arg->hf_buflen, arg->hf_bufp,0); + return (GT_ACK(fd, request, arg->hf_bufp)); } /*************** HFQUERY FUNCTION ******************************/ -static hfqry(fd, request, arg ) - int fd ; - int request ; - struct hfquery *arg ; +static int +hfqry (fd, request, arg) + int fd; + int request; + struct hfquery *arg; { -WR_REQ(fd, request, arg->hf_cmdlen, arg->hf_cmd, arg->hf_resplen ) ; -return( GT_ACK(fd, request, arg->hf_resp ) ) ; + WR_REQ(fd, request, arg->hf_cmdlen, arg->hf_cmd, arg->hf_resplen); + return (GT_ACK(fd, request, arg->hf_resp)); } /*************** GT_ACK FUNCTION ******************************/ -static GT_ACK(fd, req, buf ) - int fd ; - int req ; - char *buf ; +static int +GT_ACK (fd, req, buf) + int fd; + int req; + char *buf; { - - struct hfctlack ack ; - int i = sizeof( ack ) ; - int j = 0 ; - union { - char *c ; - struct hfctlack *ack ; - } p ; - - int hft_alrm() ; - -is_ack_vtd = 0 ; /* flag no ACT VTD yet */ - -if ( setjmp( hftenv ) ) /* set environment in case */ - { /* of time out */ - errno=ENODEV ; /* if time out, set errno */ - return( -1 ) ; /* flag error */ - } - -alarm(3) ; /* time out in 3 secs */ -sav_alrm = signal( SIGALRM, hft_alrm ) ;/* prepare to catch time out */ - -p.ack = &ack ; -while ( ! is_ack_vtd ) /* do until valid ACK VTD */ - { - RD_BUF(fd, p.c, i ) ; /* read until a ACK VTD is fill*/ - - if ( ! memcmp( &ack, &ACK, sizeof( HFINTROSZ ) ) /* the ACK intro & */ - && ( ack.hf_request == req ) ) /* is it the response we want ?*/ - { /* yes, ACK VTD found */ - is_ack_vtd = 1 ; /* quickly, flag it */ - break ; /* get the %$%#@ out of here */ - } - - p.ack = &ack ; /* no, then skip 1st */ - ++p.c ; /* char and start over */ - i = sizeof( ack ) - 1 ; /* one less ESC to cry over */ - - while( ( *p.c != 0x1b ) && i ) /* scan for next ESC */ - { ++p.c ; --i ; } /* if any */ - - ( i ? memcpy( &ack, p.c, i ) : 0 ) ; /* if any left over, then move */ - p.ack = &ack ; /* ESC to front of ack struct */ - p.c += i ; /* skip over whats been read */ - i = sizeof( ack ) - i ; /* set whats left to be read */ - } /***** TRY AGAIN */ - -alarm(0) ; /* ACK VTD received, reset alrm*/ -signal( SIGALRM, sav_alrm ) ; /* reset signal */ - -if ( i = ack.hf_arg_len ) /* any data following ? */ - { /* yes, */ - RD_BUF(fd,buf,i) ; /* read until it is received */ - } - -if ( errno = ack.hf_retcode ) /* set errno based on returned */ - return (-1) ; /* code, if 0, then no error */ -else - return (0) ; /* if set, then error returned */ + struct hfctlack ack; + int i = sizeof (ack); + int j = 0; + union { + char *c; + struct hfctlack *ack; + } p; + + is_ack_vtd = 0; /* flag no ACT VTD yet */ + + if (setjmp (hftenv)) /* set environment in case */ + { /* of time out */ + errno = ENODEV; /* if time out, set errno */ + return (-1); /* flag error */ + } + + alarm(3); /* time out in 3 secs */ + sav_alrm = signal (SIGALRM, hft_alrm); /* prepare to catch time out */ + + p.ack = &ack; + while (! is_ack_vtd) /* do until valid ACK VTD */ + { + RD_BUF(fd, p.c, i); /* read until a ACK VTD is fill*/ + + if (! memcmp (&ack, &ACK, sizeof (HFINTROSZ)) /* the ACK intro & */ + && (ack.hf_request == req)) /* is it the response we want ?*/ + { /* yes, ACK VTD found */ + is_ack_vtd = 1; /* quickly, flag it */ + break; /* get the %$%#@ out of here */ + } + + p.ack = &ack; /* no, then skip 1st */ + ++p.c; /* char and start over */ + i = sizeof (ack) - 1; /* one less ESC to cry over */ + + while ((*p.c != 0x1b) && i) /* scan for next ESC */ + { ++p.c; --i; } /* if any */ + + (i ? memcpy (&ack, p.c, i) : 0); /* if any left over, then move */ + p.ack = &ack; /* ESC to front of ack struct */ + p.c += i; /* skip over whats been read */ + i = sizeof (ack) - i; /* set whats left to be read */ + } /***** TRY AGAIN */ + + alarm(0); /* ACK VTD received, reset alrm*/ + signal (SIGALRM, sav_alrm); /* reset signal */ + + if (i = ack.hf_arg_len) /* any data following ? */ + { /* yes, */ + RD_BUF(fd,buf,i); /* read until it is received */ + } + + if (errno = ack.hf_retcode) /* set errno based on returned */ + return (-1); /* code, if 0, then no error */ + else + return (0); /* if set, then error returned */ } /*************** HFT_ALRM FUNCTION ******************************/ -static hft_alrm(sig) /* Function hft_alrm - handle */ - int sig ; /* alarm signal */ +static int +hft_alrm (sig) /* Function hft_alrm - handle */ + int sig; /* alarm signal */ { -signal( SIGALRM, sav_alrm ) ; /* reset to previous */ + signal (SIGALRM, sav_alrm); /* reset to previous */ -if ( is_ack_vtd ) /* has ack vtd arrived ? */ - return(0) ; /* yes, then continue */ -else /* no, then return with error */ - longjmp( hftenv, -1 ) ; + if (is_ack_vtd) /* has ack vtd arrived ? */ + return(0); /* yes, then continue */ + else /* no, then return with error */ + longjmp (hftenv, -1); } @@ -278,42 +297,43 @@ else /* no, then return with error */ /*** ***/ /*********************************************************************/ -static WR_REQ(fd, request, cmdlen, cmd, resplen ) - int fd ; - int request ; - int cmdlen ; - char *cmd ; - int resplen ; +static int +WR_REQ (fd, request, cmdlen, cmd, resplen) + int fd; + int request; + int cmdlen; + char *cmd; + int resplen; { - struct { - char *c ; - struct hfctlreq *req ; - } p ; - int size ; - - req.hf_request = request ; - req.hf_arg_len = cmdlen ; - req.hf_rsp_len = resplen ; - -if ( cmdlen ) /* if arg structure to pass */ - { - size = sizeof( struct hfctlreq ) + cmdlen ; - if ( ( p.c = malloc(size) ) == NULL ) /* malloc one area */ - return( -1 ) ; - - memcpy( p.c, &req, sizeof( req ) ) ; /* copy CTL REQ struct */ - memcpy( p.c + sizeof( req ), cmd, cmdlen ) ; /* copy arg struct */ - } -else - { - p.req = &req ; /* otherwise use only CTL REQ */ - size = sizeof( req ) ; - } - - /* write request to terminal */ -if ( write(fd,p.c,size) == -1 ) return (-1) ; -if ( p.req != &req ) /* free if allocated */ - free( p.c ) ; -return (0) ; + struct { + char *c; + struct hfctlreq *req; + } p; + int size; + + req.hf_request = request; + req.hf_arg_len = cmdlen; + req.hf_rsp_len = resplen; + + if (cmdlen) /* if arg structure to pass */ + { + size = sizeof (struct hfctlreq) + cmdlen; + if ((p.c = malloc(size)) == NULL) /* malloc one area */ + return (-1); + + memcpy (p.c, &req, sizeof (req)); /* copy CTL REQ struct */ + memcpy (p.c + sizeof (req), cmd, cmdlen); /* copy arg struct */ + } + else + { + p.req = &req; /* otherwise use only CTL REQ */ + size = sizeof (req); + } + + /* write request to terminal */ + if (write(fd,p.c,size) == -1) return (-1); + if (p.req != &req) /* free if allocated */ + free (p.c); + return (0); } |