Add --force-enable-ssv

Signed-off-by: Nick Chan <[email protected]>

docs/palera1n.1

@@ -18,6 +18,7 @@
 .Op Fl i Ar checkra1n file
 .Op Fl -version
 .Op Fl -force-revert
+.Op Fl -force-enable-ssv
 .Op Fl -override-libcheckra1nhelper Ar hook dylib
 .Sh DESCRIPTION
 .Nm
@@ -28,7 +29,7 @@ bootROM exploit.
 .Pp
 .Nm
 provides rootful and rootless jailbreak modes.
-On iOS/iPadOS 15.0 and later and on tvOS 18.2 or later,
+On iOS/iPadOS 15.0 and later,
 .Nm
 is able to jailbreak the device in fakefs-rootful mode, where /
 is writable, as well as rootless mode, where / cannot be written to.
@@ -134,6 +135,19 @@ files. As a result, using the loader app to install the jailbreak environment
 is not supported when this option is used together with
 .Fl f , -fakefs
 \[char46]
+.It Fl -force-enable-ssv
+Force the jailbreak to detect Signed System Volume (SSV) as being required on
+the system. This option provides compatibility with previous version of palera1n
+that incorrectly detect SSV as being required on tvOS 18.2 and above. When using
+this option with
+.Fl f , -fakefs ,
+the jailbreak will behave as if fakefs is required, which allows the user to boot
+into fakefs possibly created by previous versions of palera1n, or remove it if
+the
+.Fl -force-revert
+option is specified as well.
+(It is technically possible to setup fakefs using this option as well, but this
+is not a supported scenario)
 .It Fl B , -setup-fakefs-partial
 Like
 .Fl c , -setup-fakefs

include/palerain.h

@@ -26,6 +26,8 @@
 #define palerain_option_case_force_revert palerain_option_case(1)
 #define palerain_option_case_libcheckra1nhelper_path palerain_option_case(2)
 #define palerain_option_case_cli		  palerain_option_case(3)
+#define palerain_option_case_force_enable_ssv		  palerain_option_case(4)
+
 
 
 #ifdef USE_LIBUSB

src/optparse.c

@@ -37,6 +37,7 @@ static struct option longopts[] = {
 	{"rootless", no_argument, NULL, 'l'},
 	{"demote", no_argument, NULL, 'd'},
 	{"force-revert", no_argument, NULL, palerain_option_case_force_revert},
+	{"force-enable-ssv", no_argument, NULL, palerain_option_case_force_enable_ssv},
 	{"no-colors", no_argument, NULL, 'S'},
 	{"safe-mode", no_argument, NULL, 's'},
 	{"telnetd", no_argument, NULL, 'T'},
@@ -81,6 +82,7 @@ static int usage(int e, char* prog_name)
 			"iOS/iPadOS/tvOS 15-26, bridgeOS 5-10 arm64 jailbreaking tool\n\n"
 			"\t--version\t\t\t\tPrint version\n"
 			"\t--force-revert\t\t\t\tRemove jailbreak\n"
+			"\t--force-enable-ssv\t\t\tForce SSV detection to result in YES\n"
 #ifdef DEV_BUILD
 			"\t-1, --test1\t\t\t\tSet palerain_option_test1\n"
 			"\t-2, --test2\t\t\t\tSet palerain_option_test2\n"
@@ -338,6 +340,9 @@ int optparse(int argc, char* argv[]) {
 			}
 			snprintf(gOverrideLibcheckra1nHelper, strlen(optarg) + 1, "%s", optarg);
 			break;
+		case palerain_option_case_force_enable_ssv:
+			palerain_flags |= palerain_option_ssv;
+			break;
 		default:
 			usage(1, argv[0]);
 			break;