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Annotation of 41BSD/cmd/uucp/imsg.c, revision 1.1.1.1

1.1       root        1: #include "uucp.h"
                      2: 
                      3: 
                      4: char Msync[2] = "\020";
                      5: /*******
                      6:  *     imsg(msg, fn)
                      7:  *     char *msg;
                      8:  *     int fn;
                      9:  *
                     10:  *     imsg  -  this is the initial read message routine -
                     11:  *     used before a protocol is agreed upon.
                     12:  *
                     13:  *     return codes:
                     14:  *             EOF - no more messages
                     15:  *             0 - message returned
                     16:  */
                     17: 
                     18: imsg(msg, fn)
                     19: char *msg;
                     20: int fn;
                     21: {
                     22:        int ret;
                     23:        DEBUG(7, "imsg %s>", "");
                     24:        while ((ret = read(fn, msg, 1)) == 1) {
                     25:                DEBUG(7, "%c", (*msg > 037) ? *msg : '-');
                     26:                if (*msg == Msync[0])
                     27:                        break;
                     28:        }
                     29:        DEBUG(7, "%s\n", "<");
                     30:        if (ret < 1)
                     31:                return(EOF);
                     32:        while (read(fn, msg, 1) == 1) {
                     33:                DEBUG(7, "%c", (*msg > 037) ? *msg : '-');
                     34:                if (*msg == '\n')
                     35:                        break;
                     36:                if (*msg == '\0')
                     37:                        break;
                     38:                msg++;
                     39:        }
                     40:        *msg = '\0';
                     41:        return(0);
                     42: }
                     43: 
                     44: 
                     45: /***
                     46:  *     omsg(type, msg, fn)
                     47:  *     char type, *msg;
                     48:  *     int fn;
                     49:  *
                     50:  *     omsg  -  this is the initial write message routine -
                     51:  *     used before a protocol is agreed upon.
                     52:  *
                     53:  *     return code:  always 0
                     54:  */
                     55: 
                     56: omsg(type, msg, fn)
                     57: char *msg, type;
                     58: int fn;
                     59: {
                     60:        char buf[BUFSIZ], *c;
                     61: 
                     62:        c = buf;
                     63:        *c++ = Msync[0];
                     64:        *c++ = type;
                     65:        while (*msg)
                     66:                *c++ = *msg++;
                     67:        *c++ = '\0';
                     68:        write(fn, buf, strlen(buf) + 1);
                     69:        return(0);
                     70: }

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