[PATCH i-g-t] lib/igt_dir: Use actual length for string termination

[Peter Senna Tschudin]

Commit 501da513dfb7 ("lib/igt_dir: utilities for directory traversal and
file handling") introduced a bug where strings were always
null-terminated at their maximum length rather than at their actual used
length. This could lead to strings with unintended trailing data or
improper termination.

This commit fixes the issue by ensuring strings are null-terminated at
the correct (used) length.

Cc: kamil.konieczny at linux.intel.com
Cc: katarzyna.piecielska at intel.com
Cc: zbigniew.kempczynski at intel.com
Cc: michal.wajdeczko at intel.com
Cc: karthik.b.s at intel.com
Cc: jan.sokolowski at intel.com
Cc: rodrigo.vivi at intel.com
Fixes: 501da513dfb7 ("lib/igt_dir: utilities for directory traversal and file handling")
Signed-off-by: Peter Senna Tschudin <peter.senna at linux.intel.com>
---
 lib/igt_dir.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/igt_dir.c b/lib/igt_dir.c
index 1792ba7c1..e232dbda9 100644
--- a/lib/igt_dir.c
+++ b/lib/igt_dir.c
@@ -79,7 +79,7 @@ int igt_dir_get_fd_path(int fd, char *path, size_t path_len)
 	if (len == -1)
 		return -1;
 
-	path[path_len] = '\0';
+	path[len] = '\0';
 
 	return 0;
 }
-- 
2.43.0