Found via -Werror:
makedumpfile.c: In function ‘dump_dmesg’:
makedumpfile.c:5884:33: error: ignoring return value of ‘ftruncate’ declared
with attribute ‘warn_unused_result’ [-Werror=unused-result]
5884 | ftruncate(info->fd_dumpfile, 0);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Stefan Wiehler <stefan.wieh...@nokia.com>
---
makedumpfile.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/makedumpfile.c b/makedumpfile.c
index ce0d40e..c6f70ff 100644
--- a/makedumpfile.c
+++ b/makedumpfile.c
@@ -5881,7 +5881,11 @@ dump_dmesg()
char *first;
/* Clear everything we have already written...
*/
- ftruncate(info->fd_dumpfile, 0);
+ if (ftruncate(info->fd_dumpfile, 0) != 0) {
+ ERRMSG("Can't truncate file(%s). %s\n",
+ info->name_dumpfile,
strerror(errno));
+ goto out;
+ }
lseek(info->fd_dumpfile, 0, SEEK_SET);
/* ...and only write up to the corruption. */
--
2.42.0
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