Small test program for dup2

dup2_test.c (text/plain), 808 bytes, created by Ruediger Pluem on 2006-10-02 02:43:12 UTC

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Description: Small test program for dup2

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Creator: Ruediger Pluem

Created: 2006-10-02 02:43:12 UTC

Size: 808 bytes

patch

obsolete

> >#include <stdio.h> >#include <sys/types.h> >#include <sys/wait.h> >#include <unistd.h> >#include <stdlib.h> >#include <string.h> > >#define BUFSIZE 1024 > >int main(int argc, char *argv[]) >{ > int pipefds[2]; > pid_t pid; > char *buf; > > buf = malloc(BUFSIZE); > pipe(pipefds); > if ((pid = fork()) != 0) { > /* Parent */ > int status; > > strcpy(buf, "Hello World!\n"); > close(pipefds[0]); > dup2(pipefds[1], 2); > write(pipefds[1], buf, strlen(buf)+1); > close(pipefds[1]); > pipe(pipefds); > dup2(pipefds[1], 2); > waitpid(pid, &status, 0); > } > else { > /* Child */ > close(pipefds[1]); > read(pipefds[0], buf, BUFSIZE); > printf("Child: %s", buf); > read(pipefds[0], buf, BUFSIZE); > } > return 0; >} View Attachment As Raw

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