termux-packages/packages/busybox/0008-miscutils-crontab.patch

diff -uNr busybox-1.33.1/miscutils/crontab.c busybox-1.33.1.mod/miscutils/crontab.c
--- busybox-1.33.1/miscutils/crontab.c	2021-01-01 10:52:27.000000000 +0000
+++ busybox-1.33.1.mod/miscutils/crontab.c	2021-05-04 14:17:52.387444315 +0000
@@ -51,12 +51,14 @@
 		return;
 	}
 
+#ifndef __ANDROID__
 	/* CHILD - change user and run editor */
 	/* initgroups, setgid, setuid */
 	change_identity(pas);
 	setup_environment(pas->pw_shell,
 			SETUP_ENV_CHANGEENV | SETUP_ENV_TO_TMP,
 			pas);
+#endif
 	ptr = getenv("VISUAL");
 	if (!ptr) {
 		ptr = getenv("EDITOR");
@@ -129,7 +131,11 @@
 		if (!argv[0])
 			bb_show_usage();
 		if (NOT_LONE_DASH(argv[0])) {
+#ifndef __ANDROID__
 			src_fd = xopen_as_uid_gid(argv[0], O_RDONLY, pas->pw_uid, pas->pw_gid);
+#else
+			src_fd = xopen3(argv[0], O_RDONLY, 0600);
+#endif
 		}
 	}
 
@@ -158,7 +164,9 @@
 		/* No O_EXCL: we don't want to be stuck if earlier crontabs
 		 * were killed, leaving stale temp file behind */
 		src_fd = xopen3(tmp_fname, O_RDWR|O_CREAT|O_TRUNC, 0600);
+#ifndef __ANDROID__
 		fchown(src_fd, pas->pw_uid, pas->pw_gid);
+#endif
 		fd = open(pas->pw_name, O_RDONLY);
 		if (fd >= 0) {
 			bb_copyfd_eof(fd, src_fd);