systemd/backport-basic-stat-util-make-mtime-check-stricter-and-use-en.patch

35 lines
1.4 KiB
Diff

From a59b0a9f768f6e27b25f4f1bab6de08842e78d74 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michal=20Sekleta=CC=81r?= <msekleta@redhat.com>
Date: Thu, 5 Nov 2020 17:55:25 +0100
Subject: [PATCH] basic/stat-util: make mtime check stricter and use entire
timestamp
Note that st_mtime member of struct stat is defined as follows,
#define st_mtime st_mtim.tv_sec
Hence we omitted checking nanosecond part of the timestamp (struct
timespec) and possibly would miss modifications that happened within the
same second.
---
src/basic/stat-util.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/src/basic/stat-util.c b/src/basic/stat-util.c
index 4595ba7..b44d75c 100644
--- a/src/basic/stat-util.c
+++ b/src/basic/stat-util.c
@@ -394,7 +394,8 @@ bool stat_inode_unmodified(const struct stat *a, const struct stat *b) {
return a && b &&
(a->st_mode & S_IFMT) != 0 && /* We use the check for .st_mode if the structure was ever initialized */
((a->st_mode ^ b->st_mode) & S_IFMT) == 0 && /* same inode type */
- a->st_mtime == b->st_mtime &&
+ a->st_mtim.tv_sec == b->st_mtim.tv_sec &&
+ a->st_mtim.tv_nsec == b->st_mtim.tv_nsec &&
(!S_ISREG(a->st_mode) || a->st_size == b->st_size) && /* if regular file, compare file size */
a->st_dev == b->st_dev &&
a->st_ino == b->st_ino &&
--
2.23.0