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-rw-r--r--lib/sysfs.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/sysfs.c b/lib/sysfs.c
index 53aba3af9..9d7614880 100644
--- a/lib/sysfs.c
+++ b/lib/sysfs.c
@@ -464,7 +464,7 @@ int sysfs_write_u64(struct sysfs_cxt *cxt, const char *attr, uint64_t num)
len = snprintf(buf, sizeof(buf), "%" PRIu64, num);
if (len < 0 || (size_t) len + 1 > sizeof(buf))
- rc = -errno;
+ rc = len < 0 ? -errno : -E2BIG;
else
rc = write_all(fd, buf, len);