13 static void fail(const char *what) { perror(what); exit(1); }
15 int main(int argc, char *argv[])
26 for (i = 1, j = 0; i < argc; i++) {
27 if (strcmp(argv[i], "-v") == 0) { verbose++; continue; }
28 if (j >= MAXFD) { fprintf(stderr, "too many\n"); exit(1); }
29 if (sscanf(argv[i], "%d:%d", &fds[j].cur, &fds[j].want) < 2 ||
31 { fprintf(stderr, "bad syntax\n"); exit(1); }
35 for (i = 0; i < MAXFD; i++) flag[i] = -1;
36 for (i = 0; i < n; i++) {
39 ino[i] = ino[flag[fd]];
41 printf("exist fd %d[%d] = ino %lu\n", fd, i, (unsigned long)ino[i]);
44 if ((fd2 = open(",delete-me",
45 O_WRONLY | O_CREAT | O_EXCL,
49 if (fd2 != fd) { if (dup2(fd2, fd) < 0) fail("dup2"); close(fd2); }
50 if (fstat(fd, &st)) fail("fstat");
53 printf("open fd %d[%d] = ino %lu\n", fd, i, (unsigned long)ino[i]);
57 if (mdup(fds, n)) fail("mdup");
59 for (i = 0; i < n; i++) {
61 if (fds[i].want != -1 && fds[i].want != fd) {
62 printf("fd %d[%d] != %d\n", fd, i, fds[i].want);
64 } else if (fstat(fd, &st)) {
65 printf("fstat %d[%d] failed: %s\n", fd, i, strerror(errno));
67 } else if (st.st_ino != ino[i]) {
68 if (!verbose) printf("ino %d[%d] wrong\n", fd, i);
69 else printf("ino %d[%d] = %lu != %lu\n", fd, i,
70 (unsigned long)(st.st_ino), (unsigned long)ino[i]);