Return to rdwr.c CVS log

Up to [CSRG BSD Unix] / 43BSDReno / pgrm / pascal / pdx / process

Annotation of 43BSDReno/pgrm/pascal/pdx/process/rdwr.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1980 Regents of the University of California.
                      3:  * All rights reserved.  The Berkeley software License Agreement
                      4:  * specifies the terms and conditions for redistribution.
                      5:  */
                      6: 
                      7: #ifndef lint
                      8: static char sccsid[] = "@(#)rdwr.c     5.3 (Berkeley) 4/7/87";
                      9: #endif not lint
                     10: 
                     11: /*
                     12:  * This routine is used to access the debuggee process from
                     13:  * outside the "process" module.
                     14:  *
                     15:  * They invoke "pio" which eventually leads to a call to "ptrace".
                     16:  * The system generates an I/O error when a ptrace fails, we catch
                     17:  * that here and assume its due to a misguided address.
                     18:  */
                     19: 
                     20: #include "defs.h"
                     21: #include <errno.h>
                     22: #include "process.h"
                     23: #include "process.rep"
                     24: 
                     25: #      include "pxinfo.h"
                     26: 
                     27: typedef int INTFUNC();
                     28: 
                     29: extern INTFUNC *onsyserr();
                     30: 
                     31: LOCAL badaddr;
                     32: LOCAL PIO_OP rwflg;
                     33: LOCAL rwerr();
                     34: 
                     35: /*
                     36:  * Read/Write to the process' data area.
                     37:  */
                     38: 
                     39: drdwr(rw, buff, addr, nbytes)
                     40: PIO_OP rw;
                     41: char *buff;
                     42: ADDRESS addr;
                     43: int nbytes;
                     44: {
                     45:        INTFUNC *f;
                     46: 
                     47:        f = onsyserr(EIO, rwerr);
                     48:        badaddr = addr;
                     49:        rwflg = rw;
                     50:        pio(process, rw, DATASEG, buff, addr, nbytes);
                     51:        onsyserr(EIO, f);
                     52: }
                     53: 
                     54: /*
                     55:  * Error handler.
                     56:  */
                     57: 
                     58: LOCAL rwerr()
                     59: {
                     60:        error("bad %s process address 0x%x",
                     61:                rwflg == PREAD ? "read" : "write", badaddr);
                     62: }

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.