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authorMartijn Dekker <martijn@inlv.org>2018-03-07 17:32:29 +0000
committerHerbert Xu <herbert@gondor.apana.org.au>2018-03-22 00:25:35 +0800
commitfc914153d433b063b9ed11f3ace668c5c866f379 (patch)
treec1de1cf639d53c2c74c75b34b60635bb6eff4fb5 /src/bltin
parentmystring: fix "Illegal number" on FreeBSD & macOS for x=; echo $((x)) (diff)
downloaddash-fc914153d433b063b9ed11f3ace668c5c866f379.tar.gz
dash-fc914153d433b063b9ed11f3ace668c5c866f379.zip
builtin: Greater resolution in test -nt / test -ot
Op 07-03-18 om 15:46 schreef Martijn Dekker:
> Op 06-03-18 om 09:19 schreef Herbert Xu:
>> On Thu, Jun 22, 2017 at 10:30:02AM +0200, Petr Skočík wrote:
>>> would you be willing to pull something like this?
> [...]
>>> I could use greater resolution in `test -nt` / `test -ot`, and st_mtim
>>> field is standardized under POSIX.1-2008 (or so stat(2) says).
>>
>> Sure.  But your patch is corrupted.
>
> Fixed patch attached.
>
> But I wouldn't apply it as is. My system does not have st_mtim. So I
> think it needs a configure test and a fallback to the old method.

Here's an attempt to make that happen. See attached.

- M.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to '')
-rw-r--r--src/bltin/test.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/src/bltin/test.c b/src/bltin/test.c
index 58c05fe..d1458df 100644
--- a/src/bltin/test.c
+++ b/src/bltin/test.c
@@ -476,9 +476,17 @@ newerf (const char *f1, const char *f2)
 {
 	struct stat b1, b2;
 
+#ifdef HAVE_ST_MTIM
+	return (stat (f1, &b1) == 0 &&
+		stat (f2, &b2) == 0 &&
+		( b1.st_mtim.tv_sec > b2.st_mtim.tv_sec ||
+		 (b1.st_mtim.tv_sec == b2.st_mtim.tv_sec && (b1.st_mtim.tv_nsec > b2.st_mtim.tv_nsec )))
+	);
+#else
 	return (stat (f1, &b1) == 0 &&
 		stat (f2, &b2) == 0 &&
 		b1.st_mtime > b2.st_mtime);
+#endif
 }
 
 static int
@@ -486,9 +494,17 @@ olderf (const char *f1, const char *f2)
 {
 	struct stat b1, b2;
 
+#ifdef HAVE_ST_MTIM
+	return (stat (f1, &b1) == 0 &&
+		stat (f2, &b2) == 0 &&
+		(b1.st_mtim.tv_sec < b2.st_mtim.tv_sec ||
+		 (b1.st_mtim.tv_sec == b2.st_mtim.tv_sec && (b1.st_mtim.tv_nsec < b2.st_mtim.tv_nsec )))
+	);
+#else
 	return (stat (f1, &b1) == 0 &&
 		stat (f2, &b2) == 0 &&
 		b1.st_mtime < b2.st_mtime);
+#endif
 }
 
 static int