Ajout exo5
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54
ANALE-1/EXO5/launcher.c
Normal file
54
ANALE-1/EXO5/launcher.c
Normal file
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/wait.h>
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int main(void)
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{
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int tube[2];
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int tube2[2];
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int res = pipe(tube);
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if (res == -1) {
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perror("Création Pipe"); exit(-1);
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}
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int res2 = pipe(tube2);
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if (res2 == -1) {
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perror("Création Pipe"); exit(-1);
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}
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pid_t pid_wc = fork();
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if (pid_wc == 0) {
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// lit depuis tube -> stdin
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close(tube[1]);
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dup2(tube[0], 0);
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close(tube[0]);
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// écrit vers tube2 -> stdout
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close(tube2[0]); // on ne lit pas tube2 ici
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dup2(tube2[1], 1);
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close(tube2[1]);
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execlp("cat", "cat",NULL); // ou "wc", "-c", NULL pour compter octets, etc.
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perror("cat wc");
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_exit(1);
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}
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pid_t pid_data = fork();
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if (pid_data == 0) {
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close(tube[0]);
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write(tube[1],"Bonjour tous le monde\nJe m'appelle Ronan\n",strlen("Bonjour tous le monde\nJe m'appelle Ronan\n"));
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close(tube[1]);
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}
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pid_t pid_read = fork();
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if (pid_read == 0) {
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char temp[500];
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close(tube2[1]);
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read(tube2[0],&temp,sizeof(temp));
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printf("%s",temp);
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close(tube2[0]);
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}
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return 0;
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}
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