busybox: add 1.18.2 fixes

--- busybox-1.18.2/loginutils/Config.src

+++ busybox-1.18.2-buildsys/loginutils/Config.src

@@ -186,7 +186,6 @@ config GETTY

 config LOGIN

 	bool "login"

 	default y

-	select FEATURE_SUID

 	select FEATURE_SYSLOG

 	help

 	  login is used when signing onto a system.

@@ -229,7 +228,6 @@ config FEATURE_SECURETTY

 config PASSWD

 	bool "passwd"

 	default y

-	select FEATURE_SUID

 	select FEATURE_SYSLOG

 	help

 	  passwd changes passwords for user and group accounts. A normal user

@@ -265,7 +263,6 @@ config CHPASSWD

 config SU

 	bool "su"

 	default y

-	select FEATURE_SUID

 	select FEATURE_SYSLOG

 	help

 	  su is used to become another user during a login session.

@@ -295,7 +292,6 @@ config SULOGIN

 config VLOCK

 	bool "vlock"

 	default y

-	select FEATURE_SUID

 	help

 	  Build the "vlock" applet which allows you to lock (virtual) terminals.

--- busybox-1.18.2/miscutils/Config.src

+++ busybox-1.18.2-buildsys/miscutils/Config.src

@@ -170,7 +170,6 @@ config FEATURE_CROND_DIR

 config CRONTAB

 	bool "crontab"

 	default y

-	select FEATURE_SUID

 	help

 	  Crontab manipulates the crontab for a particular user. Only

 	  the superuser may specify a different user and/or crontab directory.

--- busybox-1.18.2/util-linux/Config.src

+++ busybox-1.18.2-buildsys/util-linux/Config.src

@@ -354,7 +354,6 @@ config FEATURE_HWCLOCK_ADJTIME_FHS

 config IPCRM

 	bool "ipcrm"

 	default y

-	select FEATURE_SUID

 	help

 	  The ipcrm utility allows the removal of System V interprocess

 	  communication (IPC) objects and the associated data structures

@@ -364,7 +363,6 @@ config IPCS

 	bool "ipcs"

 	default y

 	depends on PLATFORM_LINUX

-	select FEATURE_SUID

 	help

 	  The ipcs utility is used to provide information on the currently

 	  allocated System V interprocess (IPC) objects in the system.

--- busybox-1.18.2/shell/hush.c

+++ busybox-1.18.2-hush/shell/hush.c

@@ -4123,15 +4123,26 @@ static struct pipe *parse_stream(char **

 				 && dest.length == 0 && !dest.has_quoted_part

 				) {

 					/* This newline can be ignored. But...

-					 * without the below check, interactive shell

-					 * will ignore even lines with bare <newline>,

-					 * and show the continuation prompt:

+					 * Without check #1, interactive shell

+					 * ignores even bare <newline>,

+					 * and shows the continuation prompt:

 					 * ps1_prompt$ <enter>

-					 * ps2> _   <=== wrong prompt, should be ps1

+					 * ps2> _   <=== wrong, should be ps1

+					 * Without check #2, "cmd & <newline>"

+					 * is similarly mistreated.

+					 * (BTW, this makes "cmd & cmd"

+					 * and "cmd && cmd" non-orthogonal.

+					 * Really, ask yourself, why

+					 * "cmd && <newline>" doesn't start

+					 * cmd but waits for more input?

+					 * No reason...)

 					 */

 					struct pipe *pi = ctx.list_head;

-					if (pi->num_cmds != 0)

+					if (pi->num_cmds != 0       /* check #1 */

+					 && pi->followup != PIPE_BG /* check #2 */

+					) {

 						continue;

+					}

 				}

 				/* Treat newline as a command separator. */

 				done_pipe(&ctx, PIPE_SEQ);

--- busybox-1.18.2/modutils/modprobe-small.c

+++ busybox-1.18.2-modprobe-small/modutils/modprobe-small.c

@@ -205,6 +205,7 @@ static void parse_module(module_info *in

 	/* Read (possibly compressed) module */

 	len = 64 * 1024 * 1024; /* 64 Mb at most */

 	module_image = xmalloc_open_zipped_read_close(pathname, &len);

+	/* module_image == NULL is ok here, find_keyword handles it */

 //TODO: optimize redundant module body reads

 	/* "alias1 symbol:sym1 alias2 symbol:sym2" */

@@ -845,6 +846,8 @@ int modprobe_main(int argc UNUSED_PARAM,

 		len = MAXINT(ssize_t);

 		map = xmalloc_open_zipped_read_close(*argv, &len);

+		if (!map)

+			bb_perror_msg_and_die("can't read '%s'", *argv);

 		if (init_module(map, len,

 			IF_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE(options ? options : "")

 			IF_NOT_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE("")