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

2 files changed, 9 insertions, 9 deletions

diff --git a/include/libbb.h b/include/libbb.h
index 9b52dd231..6e10cdc41 100644
--- a/include/libbb.h
+++ b/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
diff --git a/include/usage.h b/include/usage.h
index f575f4676..a6d970de6 100644
--- a/include/usage.h
+++ b/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" \
-       "        -d num  Debug level\n" \
-       "        -l num  Log level (8 - default)\n" \
+       "        -f      Foreground\n" \
+       "        -b      Background (default)\n" \
        "        -S      Log to syslog (default)\n" \
-       "        -L file Log to file\n" \
-       "        -f      Run in foreground\n" \
-       "        -b      Run in background (default)\n" \
-       "        -c dir  Working dir"
+       "        -l      Set log level. 0 is the most verbose, default 8\n" \
+        USE_DEBUG_CROND_OPTION( \
+       "        -d      Set log level, log to stderr\n" \
+        ) \
+       "        -L      Log to file\n" \
+       "        -c      Working dir"
 
 #define crontab_trivial_usage \
        "[-c DIR] [-u USER] [-ler]|[FILE]"