check for ISFShax or defuse before erasing MLC

source/dump.c

@@ -1827,6 +1827,11 @@ void dump_erase_mlc(void){
     gfx_clear(GFX_ALL, BLACK);
     printf("Erase MLC\n");
 
+    if(!isfs_slc_has_isfshax_installed() && !crypto_otp_is_de_Fused){
+        printf("MLC Erase not allowed!\nNeither ISFShax nor defuse is detected\nMLC erase would brick the consolse.");
+        goto erase_exit;
+    }
+
     if (console_abort_confirmation_power_no_eject_yes()) 
         goto erase_exit;
 
@@ -2055,6 +2060,19 @@ static void _dump_delete(const char* path){
 
 static void _dump_delete_scfm(void){
     gfx_clear(GFX_ALL, BLACK);
+
+    if(!isfs_slc_has_isfshax_installed() && !crypto_otp_is_de_Fused){
+        printf("STOP!!! Neither ISFShax nor defuse is detected\nContinuing will likely brick the consolse. You are probably doing something wrong.\nOnly continue if you really know what you are doing!");
+        if (console_abort_confirmation_power_no_eject_yes()) 
+            return;
+        printf("REALLY?\n");
+        if (console_abort_confirmation_power_no_eject_yes()) 
+            return;
+        printf("Are you really sure?\n");
+        if (console_abort_confirmation_power_no_eject_yes()) 
+            return;
+    }
+
     _dump_delete("slc:/scfm.img");
 }
 

source/isfs.c

@@ -609,6 +609,7 @@ static int _isfs_load_super(isfs_ctx* ctx){
         if(read32((u32)ctx->super + ISFSHAX_INFO_OFFSET) == ISFSHAX_MAGIC){
             // Iisfshax was found, only look for non isfshax generations to mount
             max_generation = ISFSHAX_GENERATION_FIRST;
+            ctx->isfshax = true;
             printf("ISFShax detected\n");
         }
     }
@@ -867,6 +868,10 @@ int isfs_dirclose(isfs_dir* dir)
     return 0;
 }
 
+bool isfs_slc_has_isfshax_installed(void){
+    return isfs[ISFSVOL_SLC].isfshax;
+}
+
 int isfs_init(void)
 {
     for(int i = 0; i < _isfs_num_volumes(); i++)
@@ -906,6 +911,7 @@ int isfs_fini(void)
 
         RemoveDevice(ctx->name);
         ctx->mounted = false;
+        ctx->isfshax = false;
     }
 
     initialized = false;

source/isfs.h

@@ -52,6 +52,7 @@ typedef struct {
     u32 generation;
     u32 version;
     bool mounted;
+    bool isfshax;
     u32 aes[0x10/sizeof(u32)];
     u8 hmac[0x14];
     devoptab_t devoptab;
@@ -132,6 +133,8 @@ int isfs_write_super(isfs_ctx *ctx, void *super, int index);
 
 u16* _isfs_get_fat(isfs_ctx* ctx);
 
+bool isfs_slc_has_isfshax_installed(void);
+
 void isfs_test(void);
 
 #endif