[Libguestfs] [PATCH] hivexml: Do not print null input times
Dealing with "1601-01-01T00:00:00Z" is unnecessarily awkward, especially
since the value only represents a 0 found in the data.
Signed-off-by: Alex Nelson <ajnelson(a)cs.ucsc.edu>
---
xml/hivexml.c | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/xml/hivexml.c b/xml/hivexml.c
index cf11676..5030c24 100644
--- a/xml/hivexml.c
+++ b/xml/hivexml.c
@@ -169,6 +169,10 @@ main (int argc, char *argv[])
* fiwalk.cpp.
*
* The caller should free the returned buffer.
+ *
+ * This function returns NULL on a 0 input. In the context of
+ * hives, which only have mtimes, 0 will always be a complete
+ * absence of data.
*/
#define WINDOWS_TICK 10000000LL
@@ -182,6 +186,9 @@ filetime_to_8601 (int64_t windows_ticks)
time_t t;
struct tm *tm;
+ if (windows_ticks == 0LL)
+ return NULL;
+
t = windows_ticks / WINDOWS_TICK - SEC_TO_UNIX_EPOCH;
tm = gmtime (&t);
if (tm == NULL)
--
1.7.6