63 lines
1.3 KiB
C
Executable File
63 lines
1.3 KiB
C
Executable File
/* br.c - block read */
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/* Written 1995-2000 by Werner Almesberger, EPFL-LRC/ICA */
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <atm.h>
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#define BSIZE 8192
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static void usage(const char *name)
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{
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fprintf(stderr,"usage: %s [itf.]vpi.vci\n",name);
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exit(1);
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}
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int main(int argc,char **argv)
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{
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struct sockaddr_atmpvc addr;
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struct atm_qos qos;
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int s;
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if (argc != 2) usage(argv[0]);
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if ((s = socket(PF_ATMPVC,SOCK_DGRAM,0)) < 0) {
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perror("socket");
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return 1;
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}
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memset(&addr,0,sizeof(addr));
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if (text2atm(argv[1],(struct sockaddr *) &addr,sizeof(addr),T2A_PVC) < 0)
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usage(argv[0]);
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memset(&qos,0,sizeof(qos));
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qos.aal = ATM_AAL5;
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qos.rxtp.traffic_class = ATM_UBR;
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qos.rxtp.max_sdu = BSIZE;
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if (setsockopt(s,SOL_ATM,SO_ATMQOS,&qos,sizeof(qos)) < 0) {
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perror("setsockopt SO_ATMQOS");
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return 1;
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}
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if (bind(s,(struct sockaddr *) &addr,sizeof(addr)) < 0) {
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perror("bind");
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return 1;
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}
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while (1) {
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unsigned char buf[BSIZE+4096];
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unsigned char *start;
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ssize_t size;
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start = (unsigned char *) (((unsigned long) buf+4095) & ~4095U);
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size = read(s,start,BSIZE);
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if (size > 0 && write(1,start,size) != size) return 1;
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}
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}
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