strncpy -> strlcpy to properly NUL-terminate the copy of the path

otherwise paths longer than NFILEN (1024) given with -u won't
NUL-terminate `file'.

diff --git a/usr.bin/mg/fileio.c b/usr.bin/mg/fileio.c
index 65a77d1..6493c6c 100644 (file)
--- a/usr.bin/mg/fileio.c
+++ b/usr.bin/mg/fileio.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: fileio.c,v 1.109 2023/03/08 04:43:11 guenther Exp $   */
+/*     $OpenBSD: fileio.c,v 1.110 2023/03/30 07:26:15 op Exp $ */
 
 /* This file is in the public domain. */
 
@@ -339,7 +339,7 @@ startupfile(char *suffix, char *conffile)
                goto nohome;
 
        if (conffile != NULL) {
-               (void)strncpy(file, conffile, NFILEN);
+               (void)strlcpy(file, conffile, NFILEN);
        } else if (suffix == NULL) {
                ret = snprintf(file, sizeof(file), _PATH_MG_STARTUP, home);
                if (ret < 0 || ret >= sizeof(file))