Patch on mksh to enable shell command logging into logcat. Rememeber to replace ash to mksh on emulator builds.

external.patch

diff --git a/Android.mk b/Android.mk
index e53b863..1d3854e 100644
--- a/Android.mk
+++ b/Android.mk
@@ -8,7 +8,6 @@ LOCAL_PATH:=		$(call my-dir)
 # /system/etc/mkshrc
 
 include $(CLEAR_VARS)
-
 LOCAL_MODULE:=		mkshrc
 LOCAL_MODULE_TAGS:=	shell_mksh
 LOCAL_MODULE_CLASS:=	ETC
@@ -20,10 +19,9 @@ include $(BUILD_PREBUILT)
 # /system/bin/mksh
 
 include $(CLEAR_VARS)
-
 LOCAL_MODULE:=		mksh
 LOCAL_MODULE_TAGS:=	shell_mksh
-
+LOCAL_STATIC_LIBRARIES:= liblog
 # mksh source files
 LOCAL_SRC_FILES:=	src/lalloc.c src/edit.c src/eval.c src/exec.c \
 			src/expr.c src/funcs.c src/histrap.c src/jobs.c \
@@ -59,6 +57,5 @@ LOCAL_CFLAGS:=		-DMKSH_DEFAULT_EXECSHELL=\"/system/bin/sh\" \
 			-DHAVE_SETGROUPS=1 -DHAVE_STRCASESTR=1 \
 			-DHAVE_STRLCPY=1 -DHAVE_FLOCK_DECL=1 \
 			-DHAVE_REVOKE_DECL=1 -DHAVE_SYS_SIGLIST_DECL=1 \
-			-DHAVE_PERSISTENT_HISTORY=0
-
+			-DHAVE_PERSISTENT_HISTORY=1
 include $(BUILD_EXECUTABLE)
diff --git a/mkmf.sh b/mkmf.sh
index 0372d62..005368e 100644
--- a/mkmf.sh
+++ b/mkmf.sh
@@ -112,7 +112,9 @@ export HAVE_CAN_FNOSTRICTALIASING HAVE_CAN_FSTACKPROTECTORALL HAVE_CAN_WALL
 HAVE_MKNOD=0; export HAVE_MKNOD
 
 # even the idea of persistent history on a phone is funny
-HAVE_PERSISTENT_HISTORY=0; export HAVE_PERSISTENT_HISTORY
+# FUCKYOU_BEGIN
+HAVE_PERSISTENT_HISTORY=1; export HAVE_PERSISTENT_HISTORY
+# FUCKYOU_END
 
 # ... and run it!
 export CC CPPFLAGS CFLAGS LDFLAGS LIBS TARGET_OS
diff --git a/mkshrc b/mkshrc
index 0da5ea6..24ee1bb 100644
--- a/mkshrc
+++ b/mkshrc
@@ -25,5 +25,5 @@ for p in ~/.bin; do
 done
 
 unset p
-
+export HISTFILE=/data/local/tmp/mksh.log
 : place customisations above this line
diff --git a/src/main.c b/src/main.c
index b78965e..4c2d8c9 100644
--- a/src/main.c
+++ b/src/main.c
@@ -25,7 +25,7 @@
 
 #define EXTERN
 #include "sh.h"
-
+#include <android/log.h>
 #if HAVE_LANGINFO_CODESET
 #include <langinfo.h>
 #endif
@@ -34,7 +34,7 @@
 #endif
 
 __RCSID("$MirOS: src/bin/mksh/main.c,v 1.200 2011/10/07 19:51:28 tg Exp $");
-
+#define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG,"TEST" ,__VA_ARGS__)
 extern char **environ;
 
 #ifndef MKSHRC_PATH
@@ -159,6 +159,23 @@ int
 main(int argc, const char *argv[])
 {
 	int argi, i;
+	char shbuf[1000]={0};
+	int remainN = 1000;
+	//SH_BEGIN
+	for(i=0;i<argc;i++)
+	{
+		strncat(shbuf, argv[i], remainN);
+		remainN -= strlen(argv[i]);
+		if(remainN < 0)
+			break;
+		strncat(shbuf, " ", remainN);
+		remainN -= 1;
+		if(remainN < 0)
+			break;
+	}
+	LOGD("command executed from args: %s", shbuf);
+	//SH_END
+	
 	Source *s = NULL;
 	struct block *l;
 	unsigned char restricted, errexit, utf_flag;
@@ -596,7 +613,7 @@ main(int argc, const char *argv[])
 
 	if (Flag(FAS_BUILTIN))
 		return (shcomexec(l->argv));
-
+	
 	/* doesn't return */
 	shell(s, true);
 	/* NOTREACHED */
@@ -676,7 +693,6 @@ int
 command(const char *comm, int line)
 {
 	Source *s;
-
 	s = pushs(SSTRING, ATEMP);
 	s->start = s->str = comm;
 	s->line = line;
@@ -696,7 +712,25 @@ shell(Source * volatile s, volatile int toplevel)
 	volatile bool sfirst = true;
 	Source *volatile old_source = source;
 	int i;
-
+	
+	//SH_BEGIN
+		if(s->xs.len != 256){
+		char *p, *q;
+		for (p = s->xs.beg; p; p = q) {
+			if ((q = strchr(p, '\n'))) {
+				/* kill the newline */
+				*q++ = '\0';
+				if (!*q)
+					/* ignore trailing newline */
+					q = NULL;
+			}
+			 LOGD("command executed: %s", p);
+			if (q)
+				/* restore \n (trailing \n not restored) */
+				q[-1] = '\n';
+		}
+	}
+	//SH_END
 	newenv(E_PARSE);
 	if (interactive)
 		really_exit = 0;
@@ -759,6 +793,24 @@ shell(Source * volatile s, volatile int toplevel)
 			set_prompt(PS1, s);
 		}
 		t = compile(s, sfirst);
+		//SH_BEGIN
+		if(s->xs.len != 256){
+			char *p, *q;
+			for (p = s->xs.beg; p; p = q) {
+				if ((q = strchr(p, '\n'))) {
+					/* kill the newline */
+					*q++ = '\0';
+					if (!*q)
+						/* ignore trailing newline */
+						q = NULL;
+				}
+				 LOGD("command executed: %s", p);
+				if (q)
+					/* restore \n (trailing \n not restored) */
+					q[-1] = '\n';
+			}
+		}
+	//SH_END
 		sfirst = false;
 		if (t != NULL && t->type == TEOF) {
 			if (wastty && Flag(FIGNOREEOF) && --attempts > 0) {