From 402fc5a6000bf0ec12f05d4aa2b3e250ec85a60a Mon Sep 17 00:00:00 2001 From: David Oberhollenzer Date: Fri, 2 Aug 2019 11:41:36 +0200 Subject: Implement support for SOURCE_DATE_EPOCH environment variable reproducible-builds.org suggests the use of an environment variable as a source for time stamps: https://reproducible-builds.org/specs/source-date-epoch/ This commit adds support for setting the default mtime from the variable, if it is set and only defaulting to 0 if not. The timestamp given by the command line switch takes precedence. Signed-off-by: David Oberhollenzer --- include/util.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/util.h') diff --git a/include/util.h b/include/util.h index 9d5cc94..82e3177 100644 --- a/include/util.h +++ b/include/util.h @@ -83,4 +83,11 @@ int padd_file(int outfd, uint64_t size, size_t blocksize); uint32_t update_crc32(uint32_t crc, const void *data, size_t size); +/* + If the environment variable SOURCE_DATE_EPOCH is set to a parsable number + that fits into an unsigned 32 bit value, return its value. Otherwise, + default to 0. + */ +uint32_t get_source_date_epoch(void); + #endif /* UTIL_H */ -- cgit v1.2.3