X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-stat-time.c;h=a3706e2f86d715575b800b548ba93418db907c8a;hb=1a6fbdd7d28dff1868c5eb0baf0029b27e42526a;hp=c3262d0b92f31db0afd138ed06a7ffe50d50add9;hpb=735c00a2f3a5ce7aaec8517f5438ce37b48a936c;p=gnulib.git diff --git a/tests/test-stat-time.c b/tests/test-stat-time.c index c3262d0b9..a3706e2f8 100644 --- a/tests/test-stat-time.c +++ b/tests/test-stat-time.c @@ -1,10 +1,10 @@ /* Test of . - Copyright (C) 2007 Free Software Foundation, Inc. + Copyright (C) 2007-2011 Free Software Foundation, Inc. - This program is free software; you can redistribute it and/or modify + This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of @@ -12,8 +12,7 @@ GNU General Public License for more details. You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software Foundation, - Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ + along with this program. If not, see . */ /* Written by James Youngman , 2007. */ @@ -21,26 +20,36 @@ #include "stat-time.h" +#include #include -#include -#include #include -#include #include -#define ASSERT(condition) if (!(condition)) abort () +#include "macros.h" enum { NFILES = 4 }; +static int +force_unlink (const char *filename) +{ + /* This chmod is necessary on mingw, where unlink() of a read-only file + fails with EPERM. */ + chmod (filename, 0600); + return unlink (filename); +} + static void cleanup (int sig) { /* Remove temporary files. */ - unlink ("t-stt-stamp1"); - unlink ("t-stt-testfile"); - unlink ("t-stt-stamp2"); - unlink ("t-stt-renamed"); - unlink ("t-stt-stamp3"); + force_unlink ("t-stt-stamp1"); + force_unlink ("t-stt-testfile"); + force_unlink ("t-stt-stamp2"); + force_unlink ("t-stt-renamed"); + force_unlink ("t-stt-stamp3"); + + if (sig != 0) + _exit (1); } static int @@ -70,23 +79,65 @@ do_stat (const char *filename, struct stat *p) ASSERT (stat (filename, p) == 0); } +/* Sleep long enough to notice a timestamp difference on the file + system in the current directory. */ +static void +nap (void) +{ + static long delay; + if (!delay) + { + /* Initialize only once, by sleeping for 20 milliseconds (needed + since xfs has a quantization of about 10 milliseconds, even + though it has a granularity of 1 nanosecond, and since NTFS + has a default quantization of 15.25 milliseconds, even though + it has a granularity of 100 nanoseconds). If the seconds + differ, repeat the test one more time (in case we crossed a + quantization boundary on a file system with 1 second + resolution). If we can't observe a difference in only the + nanoseconds, then fall back to 1 second if the time is odd, + and 2 seconds (needed for FAT) if time is even. */ + struct stat st1; + struct stat st2; + ASSERT (stat ("t-stt-stamp1", &st1) == 0); + ASSERT (force_unlink ("t-stt-stamp1") == 0); + delay = 20000; + usleep (delay); + create_file ("t-stt-stamp1"); + ASSERT (stat ("t-stt-stamp1", &st2) == 0); + if (st1.st_mtime != st2.st_mtime) + { + /* Seconds differ, give it one more shot. */ + st1 = st2; + ASSERT (force_unlink ("t-stt-stamp1") == 0); + usleep (delay); + create_file ("t-stt-stamp1"); + ASSERT (stat ("t-stt-stamp1", &st2) == 0); + } + if (! (st1.st_mtime == st2.st_mtime + && get_stat_mtime_ns (&st1) < get_stat_mtime_ns (&st2))) + delay = (st1.st_mtime & 1) ? 1000000 : 2000000; + } + usleep (delay); +} + static void prepare_test (struct stat *statinfo, struct timespec *modtimes) { int i; create_file ("t-stt-stamp1"); - sleep (2); + nap (); create_file ("t-stt-testfile"); - sleep (2); + nap (); create_file ("t-stt-stamp2"); - sleep (2); - ASSERT (rename ("t-stt-testfile", "t-stt-renamed") == 0); - sleep (2); + nap (); + ASSERT (chmod ("t-stt-testfile", 0400) == 0); + nap (); create_file ("t-stt-stamp3"); do_stat ("t-stt-stamp1", &statinfo[0]); - do_stat ("t-stt-renamed", &statinfo[1]); + do_stat ("t-stt-testfile", &statinfo[1]); do_stat ("t-stt-stamp2", &statinfo[2]); do_stat ("t-stt-stamp3", &statinfo[3]); @@ -103,13 +154,26 @@ test_mtime (const struct stat *statinfo, struct timespec *modtimes) int i; /* Use the struct stat fields directly. */ - ASSERT (statinfo[0].st_mtime < statinfo[2].st_mtime); /* mtime(stamp1) < mtime(stamp2) */ - ASSERT (statinfo[2].st_mtime < statinfo[3].st_mtime); /* mtime(stamp2) < mtime(stamp3) */ - ASSERT (statinfo[2].st_mtime < statinfo[1].st_ctime); /* mtime(stamp2) < ctime(renamed) */ + /* mtime(stamp1) < mtime(stamp2) */ + ASSERT (statinfo[0].st_mtime < statinfo[2].st_mtime + || (statinfo[0].st_mtime == statinfo[2].st_mtime + && (get_stat_mtime_ns (&statinfo[0]) + < get_stat_mtime_ns (&statinfo[2])))); + /* mtime(stamp2) < mtime(stamp3) */ + ASSERT (statinfo[2].st_mtime < statinfo[3].st_mtime + || (statinfo[2].st_mtime == statinfo[3].st_mtime + && (get_stat_mtime_ns (&statinfo[2]) + < get_stat_mtime_ns (&statinfo[3])))); /* Now check the result of the access functions. */ - ASSERT (modtimes[0].tv_sec < modtimes[2].tv_sec); /* mtime(stamp1) < mtime(stamp2) */ - ASSERT (modtimes[2].tv_sec < modtimes[3].tv_sec); /* mtime(stamp2) < mtime(stamp3) */ + /* mtime(stamp1) < mtime(stamp2) */ + ASSERT (modtimes[0].tv_sec < modtimes[2].tv_sec + || (modtimes[0].tv_sec == modtimes[2].tv_sec + && modtimes[0].tv_nsec < modtimes[2].tv_nsec)); + /* mtime(stamp2) < mtime(stamp3) */ + ASSERT (modtimes[2].tv_sec < modtimes[3].tv_sec + || (modtimes[2].tv_sec == modtimes[3].tv_sec + && modtimes[2].tv_nsec < modtimes[3].tv_nsec)); /* verify equivalence */ for (i = 0; i < NFILES; ++i) @@ -118,32 +182,58 @@ test_mtime (const struct stat *statinfo, struct timespec *modtimes) ts = get_stat_mtime (&statinfo[i]); ASSERT (ts.tv_sec == statinfo[i].st_mtime); } +} + +#if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__ +/* Skip the ctime tests on native Windows platforms, because their + st_ctime is either the same as st_mtime (plus or minus an offset) + or set to the file _creation_ time, and is not influenced by rename + or chmod. */ +# define test_ctime(ignored) ((void) 0) +#else +static void +test_ctime (const struct stat *statinfo) +{ + /* On some buggy NFS clients, mtime and ctime are disproportionately + skewed from one another. Skip this test in that case. */ + if (statinfo[0].st_mtime != statinfo[0].st_ctime) + return; - ASSERT (statinfo[2].st_mtime < statinfo[1].st_ctime); /* mtime(stamp2) < ctime(renamed) */ + /* mtime(stamp2) < ctime(renamed) */ + ASSERT (statinfo[2].st_mtime < statinfo[1].st_ctime + || (statinfo[2].st_mtime == statinfo[1].st_ctime + && (get_stat_mtime_ns (&statinfo[2]) + < get_stat_ctime_ns (&statinfo[1])))); } +#endif static void test_birthtime (const struct stat *statinfo, - const struct timespec *modtimes, - struct timespec *birthtimes) + const struct timespec *modtimes, + struct timespec *birthtimes) { int i; - /* Collect the birth times.. */ + /* Collect the birth times. */ for (i = 0; i < NFILES; ++i) { - if (!get_stat_birthtime (&statinfo[i], &birthtimes[i])) - { - return; - } + birthtimes[i] = get_stat_birthtime (&statinfo[i]); + if (birthtimes[i].tv_nsec < 0) + return; } - ASSERT (modtimes[0].tv_sec < birthtimes[1].tv_sec); /* mtime(stamp1) < birthtime(renamed) */ - ASSERT (birthtimes[1].tv_sec < modtimes[2].tv_sec); /* birthtime(renamed) < mtime(stamp2) */ + /* mtime(stamp1) < birthtime(renamed) */ + ASSERT (modtimes[0].tv_sec < birthtimes[1].tv_sec + || (modtimes[0].tv_sec == birthtimes[1].tv_sec + && modtimes[0].tv_nsec < birthtimes[1].tv_nsec)); + /* birthtime(renamed) < mtime(stamp2) */ + ASSERT (birthtimes[1].tv_sec < modtimes[2].tv_sec + || (birthtimes[1].tv_sec == modtimes[2].tv_sec + && birthtimes[1].tv_nsec < modtimes[2].tv_nsec)); } int -main () +main (void) { struct stat statinfo[NFILES]; struct timespec modtimes[NFILES]; @@ -162,8 +252,10 @@ main () signal (SIGTERM, cleanup); #endif + cleanup (0); prepare_test (statinfo, modtimes); test_mtime (statinfo, modtimes); + test_ctime (statinfo); test_birthtime (statinfo, modtimes, birthtimes); cleanup (0);