#include <errno.h> #include <fcntl.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <sys/stat.h> #include <sys/statvfs.h> static int do_test (void); #define TEST_FUNCTION do_test () #define TIMEOUT 5 #include <test-skeleton.c> static int do_test (void) { char *buf; int fd; FILE *fp; int ch; struct stat st1; struct stat st2; struct statvfs sv; int e; buf = (char *) malloc (strlen (test_dir) + sizeof "/tst-atime.XXXXXX"); if (buf == NULL) { printf ("cannot allocate memory: %m\n"); return 1; } stpcpy (stpcpy (buf, test_dir), "/tst-atime.XXXXXX"); fd = mkstemp (buf); if (fd == -1) { printf ("cannot open temporary file: %m\n"); return 1; } #ifdef ST_NOATIME /* Make sure the filesystem doesn't have the noatime option set. If statvfs is not available just continue. */ e = fstatvfs (fd, &sv); if (e != ENOSYS) { if (e != 0) { printf ("cannot statvfs '%s': %m\n", buf); return 1; } if ((sv.f_flag & ST_NOATIME) != 0) { puts ("Bah! The filesystem is mounted with noatime"); return 0; } } #endif /* Make sure it gets removed. */ add_temp_file (buf); if (write (fd, "some string\n", 12) != 12) { printf ("cannot write temporary file: %m\n"); return 1; } if (lseek (fd, 0, SEEK_SET) == (off_t) -1) { printf ("cannot reposition temporary file: %m\n"); return 1; } fp = fdopen (fd, "r"); if (fp == NULL) { printf ("cannot create stream: %m\n"); return 1; } if (fstat (fd, &st1) == -1) { printf ("first stat failed: %m\n"); return 1; } sleep (2); ch = fgetc (fp); if (ch != 's') { printf ("did not read correct character: got '%c', expected 's'\n", ch); return 1; } if (fstat (fd, &st2) == -1) { printf ("second stat failed: %m\n"); return 1; } if (st1.st_atime > st2.st_atime) { puts ("second atime smaller"); return 1; } else if (st1.st_atime == st2.st_atime) { puts ("atime has not changed"); return 1; } fclose (fp); return 0; }