In case of rename validate the length of the new name

Check early that the new name fits MAXLOGNAME and store it in pwconf

1 files changed, 5 insertions, 0 deletions

diff --git a/pw/pw.c b/pw/pw.c
index 7274c32..ae030ec 100644
--- a/pw/pw.c
+++ b/pw/pw.c
@@ -234,6 +234,11 @@ main(int argc, char *argv[])
 		case 'N':
 			conf.dryrun = true;
 			break;
+		case 'l':
+			if (strlen(optarg) >= MAXLOGNAME)
+				errx(EX_USAGE, "new name too long: %s", optarg);
+			conf.newname = optarg;
+			break;
 		case 'P':
 			conf.pretty = true;
 			break;