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Commit bfa9d6a3 authored by Elliott Hughes's avatar Elliott Hughes
Browse files

Remove toolbox's obsolete 'wipe' command. 

It hasn't worked in some time (it removes /data/dalvik-cache, which is
required by art), and if you're prepared to reboot (to let init put back
all the directories a working system needs) there are other ways to wipe
data (such as "fastboot format userdata reboot").

Bug: 19644330
Change-Id: Ib074ea21cc28409a506d66d75060bb4ad85539e2
parent 137c819e

toolbox/Android.mk

+0 −1
Original line number Diff line number Diff line
@@ -71,7 +71,6 @@ OUR_TOOLS := \ 
    umount \

    uptime \

    watchprops \

    wipe \



ALL_TOOLS = $(BSD_TOOLS) $(OUR_TOOLS)

toolbox/wipe.c

deleted100644 → 0
+0 −176
Original line number Diff line number Diff line 
#include <stdlib.h>

#include <stdio.h>

#include <unistd.h>

#include <dirent.h>

#include <string.h>

#include <errno.h>

#include <sys/types.h>

#include <cutils/android_reboot.h>

#include <sys/stat.h>



#ifndef PATH_MAX

#define PATH_MAX 4096

#endif





/* Directories created by init defined in system/rootdir/init.rc */

static char *INIT_DIRS[] = {

    "/system/etc/ppp",

    "/data/misc",

    "/data/local",

    "/data/local/tmp",

    "/data/data",

    "/data/app_private",

    "/data/app",

    NULL

};



static void wipe (const char *path);



static int usage()

{

    fprintf(stderr, "wipe <system|data|all>\n\n"

                    "system means '/system'\n"

                    "data means '/data'\n");



    return -1;

}



int wipe_main (int argc, char *argv[])

{

    char *whatToWipe;



    if (argc != 2) return usage();



    whatToWipe = argv[1];



    if (0 == strcmp (whatToWipe, "system")) {

        fprintf(stdout, "Wiping /system\n");

        wipe ("/system");

        fprintf(stdout, "Done wiping /android\n");

    } else if (0 == strcmp (whatToWipe, "data")) {

        fprintf(stdout, "Wiping /data\n");

        wipe ("/data");

        fprintf(stdout, "Done wiping /data\n");

    } else if (0 == strcmp (whatToWipe, "all")) {

        fprintf(stdout, "Wiping /system and /data\n");

        wipe ("/system");

        wipe ("/data");

        fprintf(stdout, "Done wiping /system and /data\n");

    } else if (0 == strcmp(whatToWipe, "nuke")) {

		int ret;

		fprintf(stdout, "Nuking the device...\n");

		wipe ("/system");

        wipe ("/data");

		fprintf(stdout, "Device nuked! Rebooting...\n");

		ret = android_reboot(ANDROID_RB_RESTART, 0, 0);

	    if (ret < 0) {

	        fprintf(stderr, "Reboot failed, %s\n", strerror(errno));

	        return 1;

	    }

	} else {

        return usage();

    }



    return 0;

}



static char nameBuffer[PATH_MAX];

static struct stat statBuffer;



static void wipe (const char *path) 

{

    DIR *dir;

    struct dirent *de;

    int ret;



    dir = opendir(path);



    if (dir == NULL) {

        fprintf (stderr, "Error opendir'ing %s '%s'\n",

                    path, strerror(errno));

        return;

    }



    char *filenameOffset;



    strcpy(nameBuffer, path);

    strcat(nameBuffer, "/");



    filenameOffset = nameBuffer + strlen(nameBuffer);



    for (;;) {

        de = readdir(dir);



        if (de == NULL) {

            break;

        }



        if (0 == strcmp(de->d_name, ".")

                || 0 == strcmp(de->d_name, "..")

                || 0 == strcmp(de->d_name, "lost+found")

        ) {

            continue;

        }



        strcpy(filenameOffset, de->d_name);



        ret = lstat (nameBuffer, &statBuffer);



        if (ret != 0) {

            fprintf(stderr, "stat() error on '%s' '%s'\n", 

                    nameBuffer, strerror(errno));

        }



        if(S_ISDIR(statBuffer.st_mode)) {

            int i;

            char *newpath;



#if 0

            closedir(dir);

#endif



            newpath = strdup(nameBuffer);

            wipe(newpath);



            /* Leave directories created by init, they have special permissions. */

            for (i = 0; INIT_DIRS[i]; i++) {

                if (strcmp(INIT_DIRS[i], newpath) == 0) {

                    break;

                }

            }

            if (INIT_DIRS[i] == NULL) {

                ret = rmdir(newpath);

                if (ret != 0) {

                    fprintf(stderr, "rmdir() error on '%s' '%s'\n", 

                        newpath, strerror(errno));

                }

            }



            free(newpath);



#if 0

            dir = opendir(path);

            if (dir == NULL) {

                fprintf (stderr, "Error opendir'ing %s '%s'\n",

                            path, strerror(errno));

                return;

            }

#endif



            strcpy(nameBuffer, path);

            strcat(nameBuffer, "/");



        } else {

            ret = unlink(nameBuffer);



            if (ret != 0) {

                fprintf(stderr, "unlink() error on '%s' '%s'\n", 

                    nameBuffer, strerror(errno));

            }

        }

    }



    closedir(dir);



}