PIPE IMPLEMENTATION IN C | LINUX IPC IMPLEMENTATION IN C | C PROGRAM TO IMPLEMENT IPC EVENT
Pipe(Inter process Communication Event) Implementation in C Language :
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#include"headers.h"<br />main()<br />{<br />        int p[2];int size,st;<br />        char buf[1000];<br />        bzero(buf,1000);<br />        pipe(p);<br />        printf("%d and %d are created by pipe..n",p[0],p[1]);<br />        int chldpid;<br /><br />        if((chldpid = fork()))<br />        {//client... parent...<br />                char file[20];<br />                printf("Enter File Name ..:");<br />                scanf("%s",file);<br />                size = strlen(file);<br />                write(p[1],&size,4);<br />                write(p[1],file,size);<br />                wait(&st);<br />                read(p[0],&size,4);<br />                read(p[0],buf,size);<br />                write(1,buf,size);<br />        }<br />        else<br />        {//child ... server ...<br />                int s,fd;<br />                        int s2;<br />                read(p[0],&s,4);<br />                printf("Size in child ..%d  n",s);<br />                char fname[20],*buff;<br />                bzero(fname,20);<br />                read(p[0],fname,s);<br />                printf("In child file name :%s..n",fname);<br />                fd=open(fname,O_RDONLY);<br />                if(fd &lt 0)<br />                        {<br />                        s2 = 26;<br />                        write(1,"open failed..n",15);<br />                        write(p[1],&s2,4);<br />                        write(p[1],"Error File Doesn't Exist..",26);<br />                }<br />                else<br />                        {<br />                        s2 = lseek(fd,0,SEEK_END);<br />                        buff =(char *) malloc(s2+1);<br />                        lseek(fd,0,SEEK_SET);<br />                        read(fd,buff,s2);<br />                        close(fd);<br />                        write(p[1],&s2,4);<br />                        write(p[1],buff,s2);<br />                        }<br />                        exit(0);<br />        }<br /><br />}<br /> |
