46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
#include <sys/types.h>
|
||
|
|
#include <sys/stat.h>
|
||
|
|
#include <fcntl.h>
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
int tube[2], fcntlLecture, fcntlEcriture;
|
||
|
|
char buf[10];
|
||
|
|
|
||
|
|
struct stat statLecture, statEcriture;
|
||
|
|
|
||
|
|
void noeud (struct stat *statDesc) {
|
||
|
|
printf("Quelques caractérisitques du noeud\n");
|
||
|
|
if (S_ISFIFO(statDesc->st_mode)) printf("\t Type : tube\n");
|
||
|
|
else printf("\t Type : autre que tube\n");
|
||
|
|
printf("\t Numéro : %llu\n", statDesc-> st_ino);
|
||
|
|
printf("\t Numéro de disque : %d\n", statDesc-> st_dev);
|
||
|
|
printf("\t Numéro de liens physiques : %d\n", statDesc-> st_nlink);
|
||
|
|
printf("\t Taille : %lld\n", statDesc-> st_size);
|
||
|
|
}
|
||
|
|
|
||
|
|
main() {
|
||
|
|
if (pipe(tube) == -1) { perror("Création ratée"), exit(2); }
|
||
|
|
if ((fcntlLecture = fcntl(tube[0], F_GETFL)) == -1) {
|
||
|
|
perror("Fcntl lecture "); exit(2); }
|
||
|
|
if ((fcntlEcriture = fcntl(tube[1], F_GETFL)) == -1) {
|
||
|
|
perror("Fcntl ecriture "); exit(2); }
|
||
|
|
printf("Attributs de %d (tube[0]) : %d\n", tube[0], fcntlLecture);
|
||
|
|
printf("Attributs de %d (tube[1]) : %d\n", tube[1], fcntlEcriture);
|
||
|
|
write(tube[1], "0123456789", 10);
|
||
|
|
read(tube[0], buf, 5);
|
||
|
|
printf("Chaine lue : %s\n", buf);
|
||
|
|
|
||
|
|
fstat(tube[0], &statLecture);
|
||
|
|
fstat(tube[1], &statEcriture);
|
||
|
|
if (memcmp(&statLecture, &statEcriture, sizeof(struct stat)) != 0) {
|
||
|
|
fprintf(stderr, "Noeuds en lecture et écriture différents\n");
|
||
|
|
printf("Descripteur en lecture\n"); noeud(&statLecture);
|
||
|
|
printf("Descripteur en ecriture\n"); noeud(&statEcriture);
|
||
|
|
} else {
|
||
|
|
printf("Noeud en lecture et ecriture identique\n");
|
||
|
|
noeud(&statEcriture); }
|
||
|
|
}
|