file_utils: convert to strnprintf()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

file_utils: convert to strnprintf()
efcfb360 · Christian Brauner · 9b9758c6 · efcfb360
Unverified Commit efcfb360 authored Feb 11, 2021 by Christian Brauner
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file_utils.c src/lxc/file_utils.c +2 -2

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--- a/src/lxc/file_utils.c
+++ b/src/lxc/file_utils.c
@@ -617,8 +617,8 @@ int timens_offset_write(clockid_t clk_id, int64_t s_offset, int64_t ns_offset)
 	if (fd < 0)
 		return -errno;

-	len = snprintf(buf, sizeof(buf), "%d %" PRId64 " %" PRId64, clk_id, s_offset, ns_offset);
-	if (len < 0 || len >= sizeof(buf))
+	len = strnprintf(buf, sizeof(buf), "%d %" PRId64 " %" PRId64, clk_id, s_offset, ns_offset);
+	if (len < 0)
 		return ret_errno(EFBIG);

 	ret = lxc_write_nointr(fd, buf, len);