crond: make it NOMMU-capable

function                                             old     new   delta
safe_setenv4                                           -      62     +62
ForkJob                                              472     511     +39
change_identity                                       21      57     +36
ParseField                                           564     571      +7
SynchronizeDir                                       178     176      -2
LogLevel                                               4       -      -4
LogFile                                                4       -      -4
FileBase                                               4       -      -4
DebugOpt                                               4       -      -4
CDir                                                   4       -      -4
DeleteFile                                           141     132      -9
packed_usage                                       24248   24228     -20
crondlog                                             157     113     -44
change_identity_e2str                                 54       -     -54
SynchronizeFile                                      729     671     -58
crond_main                                          1555    1404    -151
------------------------------------------------------------------------------
(add/remove: 1/6 grow/shrink: 3/6 up/down: 144/-358)         Total: -214 bytes

TODO_config_nommu

@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
 # Busybox version: 1.10.0.svn
-# Tue Feb 19 15:07:07 2008
+# Tue Mar  4 22:57:04 2008
 #
 CONFIG_HAVE_DOT_CONFIG=y
 
@@ -73,11 +73,11 @@ CONFIG_PREFIX="./_install"
 #
 CONFIG_PASSWORD_MINLEN=6
 CONFIG_MD5_SIZE_VS_SPEED=2
-# CONFIG_FEATURE_FAST_TOP is not set
+CONFIG_FEATURE_FAST_TOP=y
-# CONFIG_FEATURE_ETC_NETWORKS is not set
+CONFIG_FEATURE_ETC_NETWORKS=y
 CONFIG_FEATURE_EDITING=y
 CONFIG_FEATURE_EDITING_MAX_LEN=1024
-# CONFIG_FEATURE_EDITING_VI is not set
+CONFIG_FEATURE_EDITING_VI=y
 CONFIG_FEATURE_EDITING_HISTORY=15
 # CONFIG_FEATURE_EDITING_SAVEHISTORY is not set
 CONFIG_FEATURE_TAB_COMPLETION=y
@@ -102,7 +102,7 @@ CONFIG_BZIP2=y
 CONFIG_CPIO=y
 CONFIG_DPKG=y
 CONFIG_DPKG_DEB=y
-# CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY is not set
+CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY=y
 CONFIG_GUNZIP=y
 CONFIG_FEATURE_GUNZIP_UNCOMPRESS=y
 CONFIG_GZIP=y
@@ -212,6 +212,7 @@ CONFIG_FEATURE_READLINK_FOLLOW=y
 CONFIG_REALPATH=y
 CONFIG_RM=y
 CONFIG_RMDIR=y
+CONFIG_FEATURE_RMDIR_LONG_OPTIONS=y
 CONFIG_SEQ=y
 CONFIG_SHA1SUM=y
 CONFIG_SLEEP=y
@@ -318,7 +319,7 @@ CONFIG_PATCH=y
 CONFIG_SED=y
 CONFIG_VI=y
 CONFIG_FEATURE_VI_MAX_LEN=4096
-# CONFIG_FEATURE_VI_8BIT is not set
+CONFIG_FEATURE_VI_8BIT=y
 CONFIG_FEATURE_VI_COLON=y
 CONFIG_FEATURE_VI_YANKMARK=y
 CONFIG_FEATURE_VI_SEARCH=y
@@ -401,7 +402,7 @@ CONFIG_FEATURE_WTMP=y
 CONFIG_LOGIN=y
 # CONFIG_PAM is not set
 CONFIG_LOGIN_SCRIPTS=y
-# CONFIG_FEATURE_NOLOGIN is not set
+CONFIG_FEATURE_NOLOGIN=y
 CONFIG_FEATURE_SECURETTY=y
 CONFIG_PASSWD=y
 CONFIG_FEATURE_PASSWD_WEAK_CHECK=y
@@ -559,10 +560,10 @@ CONFIG_FEATURE_CHAT_SEND_ESCAPES=y
 CONFIG_FEATURE_CHAT_VAR_ABORT_LEN=y
 CONFIG_FEATURE_CHAT_CLR_ABORT=y
 CONFIG_CHRT=y
-# CONFIG_CROND is not set
+CONFIG_CROND=y
-# CONFIG_DEBUG_CROND_OPTION is not set
+CONFIG_DEBUG_CROND_OPTION=y
-# CONFIG_FEATURE_CROND_CALL_SENDMAIL is not set
+CONFIG_FEATURE_CROND_CALL_SENDMAIL=y
-# CONFIG_CRONTAB is not set
+CONFIG_CRONTAB=y
 CONFIG_DC=y
 # CONFIG_DEVFSD is not set
 # CONFIG_DEVFSD_MODLOAD is not set
@@ -596,6 +597,7 @@ CONFIG_RAIDAUTORUN=y
 CONFIG_READAHEAD=y
 CONFIG_RUNLEVEL=y
 CONFIG_RX=y
+CONFIG_SCRIPT=y
 CONFIG_STRINGS=y
 CONFIG_SETSID=y
 CONFIG_TASKSET=y
@@ -641,6 +643,7 @@ CONFIG_FEATURE_IFCONFIG_SLIP=y
 CONFIG_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ=y
 CONFIG_FEATURE_IFCONFIG_HW=y
 CONFIG_FEATURE_IFCONFIG_BROADCAST_PLUS=y
+CONFIG_IFENSLAVE=y
 # CONFIG_IFUPDOWN is not set
 CONFIG_IFUPDOWN_IFSTATE_PATH=""
 # CONFIG_FEATURE_IFUPDOWN_IP is not set
@@ -687,11 +690,7 @@ CONFIG_FEATURE_FANCY_PING=y
 CONFIG_PSCAN=y
 CONFIG_ROUTE=y
 CONFIG_SENDMAIL=y
-CONFIG_FEATURE_SENDMAIL_EHLO=y
-CONFIG_FEATURE_SENDMAIL_BLOATY=y
 CONFIG_FETCHMAIL=y
-CONFIG_FEATURE_FETCHMAIL_APOP=y
-CONFIG_FEATURE_FETCHMAIL_FILTER=y
 CONFIG_SLATTACH=y
 CONFIG_TELNET=y
 CONFIG_FEATURE_TELNET_TTYPE=y
@@ -702,7 +701,7 @@ CONFIG_TFTP=y
 CONFIG_FEATURE_TFTP_GET=y
 CONFIG_FEATURE_TFTP_PUT=y
 CONFIG_FEATURE_TFTP_BLOCKSIZE=y
-# CONFIG_DEBUG_TFTP is not set
+CONFIG_DEBUG_TFTP=y
 CONFIG_TRACEROUTE=y
 CONFIG_FEATURE_TRACEROUTE_VERBOSE=y
 CONFIG_FEATURE_TRACEROUTE_SOURCE_ROUTE=y
@@ -711,11 +710,13 @@ CONFIG_APP_UDHCPD=y
 CONFIG_APP_DHCPRELAY=y
 CONFIG_APP_DUMPLEASES=y
 CONFIG_FEATURE_UDHCPD_WRITE_LEASES_EARLY=y
+CONFIG_DHCPD_LEASES_FILE="/var/lib/misc/udhcpd.leases"
 CONFIG_APP_UDHCPC=y
 CONFIG_FEATURE_UDHCPC_ARPING=y
 CONFIG_FEATURE_UDHCP_PORT=y
 CONFIG_FEATURE_UDHCP_DEBUG=y
 CONFIG_FEATURE_RFC3397=y
+CONFIG_DHCPC_DEFAULT_SCRIPT="/usr/share/udhcpc/default.script"
 CONFIG_UDHCPC_SLACK_FOR_BUGGY_SERVERS=80
 CONFIG_VCONFIG=y
 CONFIG_WGET=y
@@ -777,7 +778,7 @@ CONFIG_FEATURE_SH_IS_NONE=y
 CONFIG_HUSH=y
 CONFIG_HUSH_HELP=y
 CONFIG_HUSH_INTERACTIVE=y
-# CONFIG_HUSH_JOB is not set
+CONFIG_HUSH_JOB=y
 CONFIG_HUSH_TICK=y
 CONFIG_HUSH_IF=y
 CONFIG_HUSH_LOOPS=y
@@ -797,6 +798,7 @@ CONFIG_CTTYHACK=y
 CONFIG_SYSLOGD=y
 CONFIG_FEATURE_ROTATE_LOGFILE=y
 CONFIG_FEATURE_REMOTE_LOG=y
+CONFIG_FEATURE_SYSLOGD_DUP=y
 CONFIG_FEATURE_IPC_SYSLOG=y
 CONFIG_FEATURE_IPC_SYSLOG_BUFFER_SIZE=16
 CONFIG_LOGREAD=y
@@ -832,6 +834,13 @@ CONFIG_SOFTLIMIT=y
 # CONFIG_SETSEBOOL is not set
 # CONFIG_SESTATUS is not set
 
+#
+# print support
+#
+CONFIG_LPD=y
+CONFIG_LPR=y
+CONFIG_LPQ=y
+
 #
 # ipsvd utilities
 #

include/libbb.h

@@ -912,7 +912,6 @@ char *bb_simplify_path(const char *path);
 #define FAIL_DELAY 3
 extern void bb_do_delay(int seconds);
 extern void change_identity(const struct passwd *pw);
-extern const char *change_identity_e2str(const struct passwd *pw);
 extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args) ATTRIBUTE_NORETURN;
 extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args);
 #if ENABLE_SELINUX

include/usage.h

@@ -507,16 +507,17 @@ USE_FEATURE_BRCTL_FANCY("\n" \
        "	F	Input from file"
 
 #define crond_trivial_usage \
-       "-d[#] -c crondir -f -b"
+       "-fbS -l N " USE_DEBUG_CROND_OPTION("-d N ") "-L LOGFILE -c DIR"
 #define crond_full_usage \
-       "	-d [#] -l [#] -S -L logfile -f -b -c dir\n" \
+       "	-f	Foreground\n" \
-       "	-d num	Debug level\n" \
+       "	-b	Background (default)\n" \
-       "	-l num	Log level (8 - default)\n" \
        "	-S	Log to syslog (default)\n" \
-       "	-L file	Log to file\n" \
+       "	-l	Set log level. 0 is the most verbose, default 8\n" \
-       "	-f	Run in foreground\n" \
+	USE_DEBUG_CROND_OPTION( \
-       "	-b	Run in background (default)\n" \
+       "	-d	Set log level, log to stderr\n" \
-       "	-c dir	Working dir"
+	) \
+       "	-L	Log to file\n" \
+       "	-c	Working dir"
 
 #define crontab_trivial_usage \
        "[-c DIR] [-u USER] [-ler]|[FILE]"

libbb/change_identity.c

@@ -30,22 +30,12 @@
 
 #include "libbb.h"
 
-
 /* Become the user and group(s) specified by PW.  */
-const char *change_identity_e2str(const struct passwd *pw)
+void change_identity(const struct passwd *pw)
 {
 	if (initgroups(pw->pw_name, pw->pw_gid) == -1)
-		return "cannot set groups";
+		bb_perror_msg_and_die("can't set groups");
 	endgrent(); /* ?? */
 	xsetgid(pw->pw_gid);
 	xsetuid(pw->pw_uid);
-	return NULL;
-}
-
-void change_identity(const struct passwd *pw)
-{
-	const char *err_msg = change_identity_e2str(pw);
-
-	if (err_msg)
-		bb_simple_perror_msg_and_die(err_msg);
 }

miscutils/Config.in

@@ -106,15 +106,13 @@ config CROND
 	      $ cat /var/spool/cron/crontabs/root
 	      # Run daily cron jobs at 4:40 every day:
 	      40 4 * * * /etc/cron/daily > /dev/null 2>&1
-	  Note that Busybox binary must be setuid root for this applet to
-	  work properly.
 
 config DEBUG_CROND_OPTION
-	bool "Support debug option -d"
+	bool "Support option -d to redirect output to stderr"
 	depends on CROND
 	default n
 	help
-	  Support option -d to enter debug mode.
+	  -d sets loglevel to 0 (most verbose) and directs all output to stderr.
 
 config FEATURE_CROND_CALL_SENDMAIL
 	bool "Using /usr/sbin/sendmail?"
@@ -130,6 +128,8 @@ config CRONTAB
 	help
 	  Crontab manipulates the crontab for a particular user.  Only
 	  the superuser may specify a different user and/or crontab directory.
+	  Note that Busybox binary must be setuid root for this applet to
+	  work properly.
 
 config DC
 	bool "dc"