Hi,
I just started unix programming .
below are the two files i am using for reading/ writing from/to a named pipe called RNP.
read.c is run on one terminal and write.c is run on other terminal.
write.c is accepting the input , but read.c is not reading the input from PIPE.
i could not find out the where it is going wrong.
read.c
#include "uni_comman.h" // has all the required .h files
#include <stdio.h>
int main( int argc , char **argv)
{
char buf[30];
int fd,n,rv,nob;
#if 0
if ((rv = mkfifo("RNP",0666))== -1 ) {
perror("mkfifo:");
exit(1);
}
#endif
if (rv = open("RNP",0666)== -1) {
perror("open:");
exit(1);
}
printf("rv = %d\n", rv);
while( 1 ) {
nob = read(rv,buf,sizeof(buf));
printf(" nob : %d \n", nob);
printf(" %s \n", buf );
}
exit(0);
}write.c
#include "uni_comman.h"
#include <stdio.h>
int main( int argc , char **argv)
{
char buf[30],*ptr;
int fd,n,rv,nob;
if ((rv = mkfifo("RNP",0666))== -1 ) {
perror("mkfifo:WNP");
exit(1);
}
if (rv = open("RNP",0666)== -1) {
perror("open:");
exit(1);
}
printf("enter sth...\n");
while( (ptr = fgets(buf,sizeof buf , stdin ))!= NULL ){
nob = write(rv,buf,sizeof(buf));
printf(" nob written : %d \n", nob);
}
close(rv);
exit(0);
}