e2fsck, tune2fs: fix post-2038 support for s_lastcheck

This changes were missed in commit ca8bc9240a00 ("Add post-2038
timestamp support to e2fsprogs").

Addresses-Coverity-Bug: 1531832
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

2 files changed, 8 insertions, 5 deletions

diff --git a/e2fsck/unix.c b/e2fsck/unix.c
index bc6b518d5..de20b216d 100644
--- a/e2fsck/unix.c
+++ b/e2fsck/unix.c
@@ -342,6 +342,7 @@ static int is_on_batt(void)
 static void check_if_skip(e2fsck_t ctx)
 {
 	ext2_filsys fs = ctx->fs;
+	struct ext2_super_block *sb = fs->super;
 	struct problem_context pctx;
 	const char *reason = NULL;
 	unsigned int reason_arg = 0;
@@ -370,7 +371,7 @@ static void check_if_skip(e2fsck_t ctx)
 	if (ctx->options & E2F_OPT_JOURNAL_ONLY)
 		goto skip;
 
-	lastcheck = fs->super->s_lastcheck;
+	lastcheck = ext2fs_get_tstamp(sb, s_lastcheck);
 	if (lastcheck > ctx->now)
 		lastcheck -= ctx->time_fudge;
 	if ((fs->super->s_state & EXT2_ERROR_FS) ||
@@ -397,8 +398,9 @@ static void check_if_skip(e2fsck_t ctx)
 		   ((ctx->now - lastcheck) >=
 		    ((time_t) fs->super->s_checkinterval))) {
 		reason = _(" has gone %u days without being checked");
-		reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24);
-		if (batt && ((ctx->now - fs->super->s_lastcheck) <
+		reason_arg = (ctx->now - ext2fs_get_tstamp(sb, s_lastcheck)) /
+			(3600*24);
+		if (batt && ((ctx->now - ext2fs_get_tstamp(sb, s_lastcheck)) <
 			     fs->super->s_checkinterval*2))
 			reason = 0;
 	} else if (broken_system_clock && fs->super->s_checkinterval) {
@@ -457,7 +459,8 @@ static void check_if_skip(e2fsck_t ctx)
 			next_check = 1;
 	}
 	if (!broken_system_clock && fs->super->s_checkinterval &&
-	    ((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval))
+	    ((ctx->now - ext2fs_get_tstamp(sb, s_lastcheck)) >=
+	     fs->super->s_checkinterval))
 		next_check = 1;
 	if (next_check <= 5) {
 		if (next_check == 1) {
diff --git a/misc/tune2fs.c b/misc/tune2fs.c
index 5f077663c..d7401f7b6 100644
--- a/misc/tune2fs.c
+++ b/misc/tune2fs.c
@@ -3445,7 +3445,7 @@ _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
 		goto closefs;
 	}
 	if (T_flag) {
-		sb->s_lastcheck = last_check_time;
+		ext2fs_set_tstamp(sb, s_lastcheck, last_check_time);
 		ext2fs_mark_super_dirty(fs);
 		printf(_("Setting time filesystem last checked to %s\n"),
 		       ctime(&last_check_time));