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From 5285f83b77df9e206f4904eba92c741eb42acc93 Mon Sep 17 00:00:00 2001
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From: Karel Zak <kzak@redhat.com>
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Date: Mon, 13 Dec 2021 13:19:18 +0100
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Subject: include/c: add cmp_timespec() and cmp_stat_mtime()
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It's like timercmp() in libc, but for timespec and for stat.st_mtim
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(or stat.st_mtime for old struct stat versions).
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Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=2180414
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Upstream: http://github.com/util-linux/util-linux/commit/0cfb8c5c3205a92ae81def278cdded63ea47094f
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Signed-off-by: Karel Zak <kzak@redhat.com>
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---
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include/c.h | 18 ++++++++++++++++++
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1 file changed, 18 insertions(+)
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diff --git a/include/c.h b/include/c.h
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index 354b59e29..01f0fa507 100644
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--- a/include/c.h
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+++ b/include/c.h
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@@ -167,6 +167,24 @@
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_a == _b ? 0 : _a > _b ? 1 : -1; })
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#endif
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+
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+#ifndef cmp_timespec
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+# define cmp_timespec(a, b, CMP) \
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+ (((a)->tv_sec == (b)->tv_sec) \
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+ ? ((a)->tv_nsec CMP (b)->tv_nsec) \
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+ : ((a)->tv_sec CMP (b)->tv_sec))
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+#endif
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+
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+
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+#ifndef cmp_stat_mtime
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+# ifdef HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
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+# define cmp_stat_mtime(_a, _b, CMP) cmp_timespec(&(_a)->st_mtim, &(_b)->st_mtim, CMP)
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+# else
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+# define cmp_stat_mtime(_a, _b, CMP) ((_a)->st_mtime CMP (_b)->st_mtime)
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+# endif
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+#endif
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+
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+
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#ifndef offsetof
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#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
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#endif
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--
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2.39.2
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