Index: utility/vbutil_kernel.c |
diff --git a/utility/vbutil_kernel.c b/utility/vbutil_kernel.c |
index 81b9e445d93478bb5926337cf88da4fe94ec8132..8b67051481d5f6f48fc31ca2157bb8cb84a2169f 100644 |
--- a/utility/vbutil_kernel.c |
+++ b/utility/vbutil_kernel.c |
@@ -5,12 +5,16 @@ |
* Verified boot kernel utility |
*/ |
+#include <errno.h> |
#include <getopt.h> |
#include <inttypes.h> /* For PRIu64 */ |
#include <stdarg.h> |
#include <stddef.h> |
#include <stdio.h> |
#include <stdlib.h> |
+#include <string.h> |
+#include <sys/stat.h> |
+#include <sys/types.h> |
#include <unistd.h> |
#include "cryptolib.h" |
@@ -22,11 +26,14 @@ |
/* Global opt */ |
static int opt_debug = 0; |
+static const int DEFAULT_PADDING = 65536; |
/* Command line options */ |
enum { |
OPT_MODE_PACK = 1000, |
+ OPT_MODE_REPACK, |
OPT_MODE_VERIFY, |
+ OPT_OLDBLOB, |
OPT_KEYBLOCK, |
OPT_SIGNPUBKEY, |
OPT_SIGNPRIVATE, |
@@ -34,12 +41,15 @@ enum { |
OPT_VMLINUZ, |
OPT_BOOTLOADER, |
OPT_CONFIG, |
+ OPT_VBLOCKONLY, |
OPT_PAD, |
}; |
static struct option long_opts[] = { |
{"pack", 1, 0, OPT_MODE_PACK }, |
+ {"repack", 1, 0, OPT_MODE_REPACK }, |
{"verify", 1, 0, OPT_MODE_VERIFY }, |
+ {"oldblob", 1, 0, OPT_OLDBLOB }, |
{"keyblock", 1, 0, OPT_KEYBLOCK }, |
{"signpubkey", 1, 0, OPT_SIGNPUBKEY }, |
{"signprivate", 1, 0, OPT_SIGNPRIVATE }, |
@@ -47,6 +57,7 @@ static struct option long_opts[] = { |
{"vmlinuz", 1, 0, OPT_VMLINUZ }, |
{"bootloader", 1, 0, OPT_BOOTLOADER }, |
{"config", 1, 0, OPT_CONFIG }, |
+ {"vblockonly", 0, 0, OPT_VBLOCKONLY }, |
{"pad", 1, 0, OPT_PAD }, |
{"debug", 0, &opt_debug, 1 }, |
{NULL, 0, 0, 0} |
@@ -54,25 +65,46 @@ static struct option long_opts[] = { |
/* Print help and return error */ |
-static int PrintHelp(void) { |
- |
- puts("vbutil_kernel - Verified boot key block utility\n" |
- "\n" |
- "Usage: vbutil_kernel <--pack|--verify> <file> [OPTIONS]\n" |
- "\n" |
- "For '--pack <file>', required OPTIONS are:\n" |
- " --keyblock <file> Key block in .keyblock format\n" |
- " --signprivate <file> Signing private key in .pem format\n" |
- " --version <number> Kernel version\n" |
- " --vmlinuz <file> Linux kernel image\n" |
- " --bootloader <file> Bootloader stub\n" |
- " --config <file> Config file\n" |
- "Optional OPTIONS are:\n" |
- " --pad <number> Padding size in bytes\n" |
- "\n" |
- "For '--verify <file>', required OPTIONS are:\n" |
- " --signpubkey <file> Signing public key in .vbpubk format\n" |
- ""); |
+static int PrintHelp(char *progname) { |
+ fprintf(stderr, |
+ "This program creates, signs, and verifies the kernel blob\n"); |
+ fprintf(stderr, |
+ "\n" |
+ "Usage: %s --pack <file> [PARAMETERS]\n" |
+ "\n" |
+ " Required parameters:\n" |
+ " --keyblock <file> Key block in .keyblock format\n" |
+ " --signprivate <file> Signing private key in .pem format\n" |
+ " --version <number> Kernel version\n" |
+ " --vmlinuz <file> Linux kernel bzImage file\n" |
+ " --bootloader <file> Bootloader stub\n" |
+ " --config <file> Config file\n" |
+ "\n" |
+ " Optional:\n" |
+ " --pad <number> Verification padding size in bytes\n" |
+ " --vblockonly Emit just the verification blob\n", |
+ progname); |
+ fprintf(stderr, |
+ "\nOR\n\n" |
+ "Usage: %s --repack <file> [PARAMETERS]\n" |
+ "\n" |
+ " Required parameters:\n" |
+ " --keyblock <file> Key block in .keyblock format\n" |
+ " --signprivate <file> Signing private key in .pem format\n" |
+ " --oldblob <file> Previously packed kernel blob\n" |
+ "\n" |
+ " Optional:\n" |
+ " --pad <number> Verification padding size in bytes\n" |
+ " --vblockonly Emit just the verification blob\n", |
+ progname); |
+ fprintf(stderr, |
+ "\nOR\n\n" |
+ "Usage: %s --verify <file> [PARAMETERS]\n" |
+ "\n" |
+ " Required parameters:\n" |
+ " --signpubkey <file> Signing public key in .vbpubk format\n" |
+ "\n", |
+ progname); |
return 1; |
} |
@@ -121,76 +153,68 @@ static unsigned int find_cmdline_start(char *input, unsigned int max_len) { |
} |
-/* Pack a .kernel */ |
-static int Pack(const char* outfile, const char* keyblock_file, |
- const char* signprivate, uint64_t version, |
- const char* vmlinuz, const char* bootloader_file, |
- const char* config_file, uint64_t pad) { |
+typedef struct blob_s { |
+ /* Stuff needed by VbKernelPreambleHeader */ |
+ uint64_t kernel_version; |
+ uint64_t bootloader_address; |
+ uint64_t bootloader_size; |
+ /* Raw kernel blob data */ |
+ uint64_t blob_size; |
+ uint8_t *blob; |
+} blob_t; |
+ |
+static void FreeBlob(blob_t *bp) { |
+ if (bp) { |
+ if (bp->blob) |
+ Free(bp->blob); |
+ Free(bp); |
+ } |
+} |
+ |
+/* Create a blob from its components */ |
+static blob_t *NewBlob(uint64_t version, |
+ const char* vmlinuz, |
+ const char* bootloader_file, |
+ const char* config_file) { |
+ blob_t *bp; |
struct linux_kernel_header *lh = 0; |
struct linux_kernel_params *params = 0; |
- VbPrivateKey* signing_key; |
- VbSignature* body_sig; |
- VbKernelPreambleHeader* preamble; |
- VbKeyBlockHeader* key_block; |
- uint64_t key_block_size; |
uint8_t* config_buf; |
uint64_t config_size; |
uint8_t* bootloader_buf; |
uint64_t bootloader_size; |
- uint64_t bootloader_mem_start; |
- uint64_t bootloader_mem_size; |
uint8_t* kernel_buf; |
uint64_t kernel_size; |
uint64_t kernel32_start = 0; |
uint64_t kernel32_size = 0; |
uint32_t cmdline_addr; |
uint8_t* blob = NULL; |
- uint64_t blob_size; |
uint64_t now = 0; |
- FILE* f; |
uint64_t i; |
- if (!outfile) { |
- error("Must specify output filename\n"); |
- return 1; |
- } |
- if (!keyblock_file || !signprivate) { |
- error("Must specify all keys\n"); |
- return 1; |
- } |
if (!vmlinuz || !bootloader_file || !config_file) { |
error("Must specify all input files\n"); |
- return 1; |
+ return 0; |
} |
- /* Read the key block and private key */ |
- key_block = (VbKeyBlockHeader*)ReadFile(keyblock_file, &key_block_size); |
- if (!key_block) { |
- error("Error reading key block.\n"); |
- return 1; |
- } |
- if (pad < key_block->key_block_size) { |
- error("Pad too small\n"); |
- return 1; |
- } |
- |
- signing_key = PrivateKeyRead(signprivate, key_block->data_key.algorithm); |
- if (!signing_key) { |
- error("Error reading signing key.\n"); |
- return 1; |
+ bp = (blob_t *)Malloc(sizeof(blob_t)); |
+ if (!bp) { |
+ error("Couldn't allocate bytes for blob_t.\n"); |
+ return 0; |
} |
+ bp->kernel_version = version; |
/* Read the config file */ |
Debug("Reading %s\n", config_file); |
config_buf = ReadFile(config_file, &config_size); |
if (!config_buf) |
- return 1; |
+ return 0; |
Debug(" config file size=0x%" PRIx64 "\n", config_size); |
if (CROS_CONFIG_SIZE <= config_size) { /* need room for trailing '\0' */ |
error("Config file %s is too large (>= %d bytes)\n", |
config_file, CROS_CONFIG_SIZE); |
- return 1; |
+ return 0; |
} |
/* Replace newlines with spaces */ |
for (i = 0; i < config_size; i++) |
@@ -201,18 +225,18 @@ static int Pack(const char* outfile, const char* keyblock_file, |
Debug("Reading %s\n", bootloader_file); |
bootloader_buf = ReadFile(bootloader_file, &bootloader_size); |
if (!bootloader_buf) |
- return 1; |
+ return 0; |
Debug(" bootloader file size=0x%" PRIx64 "\n", bootloader_size); |
/* Read the kernel */ |
Debug("Reading %s\n", vmlinuz); |
kernel_buf = ReadFile(vmlinuz, &kernel_size); |
if (!kernel_buf) |
- return 1; |
+ return 0; |
Debug(" kernel file size=0x%" PRIx64 "\n", kernel_size); |
if (!kernel_size) { |
error("Empty kernel file\n"); |
- return 1; |
+ return 0; |
} |
/* The first part of vmlinuz is a header, followed by a real-mode |
@@ -221,24 +245,25 @@ static int Pack(const char* outfile, const char* keyblock_file, |
kernel32_start = (lh->setup_sects + 1) << 9; |
if (kernel32_start >= kernel_size) { |
error("Malformed kernel\n"); |
- return 1; |
+ return 0; |
} |
kernel32_size = kernel_size - kernel32_start; |
Debug(" kernel32_start=0x%" PRIx64 "\n", kernel32_start); |
Debug(" kernel32_size=0x%" PRIx64 "\n", kernel32_size); |
/* Allocate and zero the blob we need. */ |
- blob_size = roundup(kernel32_size, CROS_ALIGN) + |
+ bp->blob_size = roundup(kernel32_size, CROS_ALIGN) + |
CROS_CONFIG_SIZE + |
CROS_PARAMS_SIZE + |
roundup(bootloader_size, CROS_ALIGN); |
- blob = (uint8_t *)Malloc(blob_size); |
- Debug("blob_size=0x%" PRIx64 "\n", blob_size); |
+ blob = (uint8_t *)Malloc(bp->blob_size); |
+ Debug("blob_size=0x%" PRIx64 "\n", bp->blob_size); |
if (!blob) { |
- error("Couldn't allocate %ld bytes.\n", blob_size); |
- return 1; |
+ error("Couldn't allocate %ld bytes.\n", bp->blob_size); |
+ return 0; |
} |
- Memset(blob, 0, blob_size); |
+ Memset(blob, 0, bp->blob_size); |
+ bp->blob = blob; |
/* Copy the 32-bit kernel. */ |
Debug("kernel goes at blob+=0x%" PRIx64 "\n", now); |
@@ -273,13 +298,13 @@ static int Pack(const char* outfile, const char* keyblock_file, |
/* Finally, append the bootloader. Remember where it will load in |
* memory, too. */ |
Debug("bootloader goes at blob+=0x%" PRIx64 "\n", now); |
- bootloader_mem_start = CROS_32BIT_ENTRY_ADDR + now; |
- bootloader_mem_size = roundup(bootloader_size, CROS_ALIGN); |
- Debug(" bootloader_mem_start=0x%" PRIx64 "\n", bootloader_mem_start); |
- Debug(" bootloader_mem_size=0x%" PRIx64 "\n", bootloader_mem_size); |
+ bp->bootloader_address = CROS_32BIT_ENTRY_ADDR + now; |
+ bp->bootloader_size = roundup(bootloader_size, CROS_ALIGN); |
+ Debug(" bootloader_address=0x%" PRIx64 "\n", bp->bootloader_address); |
+ Debug(" bootloader_size=0x%" PRIx64 "\n", bp->bootloader_size); |
if (bootloader_size) |
Memcpy(blob + now, bootloader_buf, bootloader_size); |
- now += bootloader_mem_size; |
+ now += bp->bootloader_size; |
Debug("end of blob is 0x%" PRIx64 "\n", now); |
/* Free input buffers */ |
@@ -287,18 +312,172 @@ static int Pack(const char* outfile, const char* keyblock_file, |
Free(config_buf); |
Free(bootloader_buf); |
+ /* Success */ |
+ return bp; |
+} |
+ |
+ |
+/* Pull the blob_t stuff out of a prepacked kernel blob file */ |
+static blob_t *OldBlob(const char* filename) { |
+ FILE* fp; |
+ blob_t *bp; |
+ struct stat statbuf; |
+ VbKeyBlockHeader* key_block; |
+ VbKernelPreambleHeader* preamble; |
+ uint64_t now = 0; |
+ uint8_t buf[DEFAULT_PADDING]; |
+ |
+ if (!filename) { |
+ error("Must specify prepacked blob to read\n"); |
+ return 0; |
+ } |
+ |
+ if (0 != stat(filename, &statbuf)) { |
+ error("unable to stat %s: %s\n", filename, strerror(errno)); |
+ return 0; |
+ } |
+ |
+ Debug("%s size is 0x%" PRIx64 "\n", filename, statbuf.st_size); |
+ if (statbuf.st_size < DEFAULT_PADDING) { |
+ error("%s is too small to be a valid kernel blob\n"); |
+ return 0; |
+ } |
+ |
+ Debug("Reading %s\n", filename); |
+ fp = fopen(filename, "rb"); |
+ if (!fp) { |
+ error("Unable to open file %s: %s\n", filename, strerror(errno)); |
+ return 0; |
+ } |
+ |
+ if (1 != fread(buf, sizeof(buf), 1, fp)) { |
+ error("Unable to read header from %s: %s\n", filename, strerror(errno)); |
+ fclose(fp); |
+ return 0; |
+ } |
+ |
+ /* Skip the key block */ |
+ key_block = (VbKeyBlockHeader*)buf; |
+ Debug("Keyblock is 0x%" PRIx64 " bytes\n", key_block->key_block_size); |
+ now += key_block->key_block_size; |
+ if (now > statbuf.st_size) { |
+ error("key_block_size advances past the end of the blob\n"); |
+ return 0; |
+ } |
+ |
+ /* Skip the preamble */ |
+ preamble = (VbKernelPreambleHeader*)(buf + now); |
+ Debug("Preamble is 0x%" PRIx64 " bytes\n", preamble->preamble_size); |
+ now += preamble->preamble_size; |
+ if (now > statbuf.st_size) { |
+ error("preamble_size advances past the end of the blob\n"); |
+ return 0; |
+ } |
+ |
+ /* Go find the kernel blob */ |
+ Debug("kernel blob is at offset 0x%" PRIx64 "\n", now); |
+ if (0 != fseek(fp, now, SEEK_SET)) { |
+ error("Unable to seek to 0x%" PRIx64 " in %s: %s\n", now, filename, |
+ strerror(errno)); |
+ fclose(fp); |
+ return 0; |
+ } |
+ |
+ /* Remember what we've got */ |
+ bp = (blob_t *)Malloc(sizeof(blob_t)); |
+ if (!bp) { |
+ error("Couldn't allocate bytes for blob_t.\n"); |
+ fclose(fp); |
+ return 0; |
+ } |
+ |
+ bp->kernel_version = preamble->kernel_version; |
+ bp->bootloader_address = preamble->bootloader_address; |
+ bp->bootloader_size = preamble->bootloader_size; |
+ bp->blob_size = preamble->body_signature.data_size; |
+ |
+ Debug(" kernel_version = %d\n", bp->kernel_version); |
+ Debug(" bootloader_address = 0x%" PRIx64 "\n", bp->bootloader_address); |
+ Debug(" bootloader_size = 0x%" PRIx64 "\n", bp->bootloader_size); |
+ Debug(" blob_size = 0x%" PRIx64 "\n", bp->blob_size); |
+ |
+ bp->blob = (uint8_t *)Malloc(bp->blob_size); |
+ if (!bp->blob) { |
+ error("Couldn't allocate 0x%" PRIx64 " bytes for blob_t.\n", bp->blob_size); |
+ fclose(fp); |
+ Free(bp); |
+ return 0; |
+ } |
+ |
+ /* read it in */ |
+ if (1 != fread(bp->blob, bp->blob_size, 1, fp)) { |
+ error("Unable to read kernel blob from %s: %s\n", filename, strerror(errno)); |
+ fclose(fp); |
+ Free(bp); |
+ return 0; |
+ } |
+ |
+ /* done */ |
+ fclose(fp); |
+ |
+ return bp; |
+} |
+ |
+ |
+/* Pack a .kernel */ |
+static int Pack(const char* outfile, const char* keyblock_file, |
+ const char* signprivate, blob_t *bp, uint64_t pad, |
+ int vblockonly) { |
+ VbPrivateKey* signing_key; |
+ VbSignature* body_sig; |
+ VbKernelPreambleHeader* preamble; |
+ VbKeyBlockHeader* key_block; |
+ uint64_t key_block_size; |
+ FILE* f; |
+ uint64_t i; |
+ |
+ if (!outfile) { |
+ error("Must specify output filename\n"); |
+ return 1; |
+ } |
+ if (!keyblock_file || !signprivate) { |
+ error("Must specify all keys\n"); |
+ return 1; |
+ } |
+ if (!bp) { |
+ error("Refusing to pack invalid kernel blob\n"); |
+ return 1; |
+ } |
+ |
+ /* Read the key block and private key */ |
+ key_block = (VbKeyBlockHeader*)ReadFile(keyblock_file, &key_block_size); |
+ if (!key_block) { |
+ error("Error reading key block.\n"); |
+ return 1; |
+ } |
+ if (pad < key_block->key_block_size) { |
+ error("Pad too small\n"); |
+ return 1; |
+ } |
+ |
+ signing_key = PrivateKeyReadPem(signprivate, key_block->data_key.algorithm); |
+ if (!signing_key) { |
+ error("Error reading signing key.\n"); |
+ return 1; |
+ } |
+ |
/* Sign the kernel data */ |
- body_sig = CalculateSignature(blob, blob_size, signing_key); |
+ body_sig = CalculateSignature(bp->blob, bp->blob_size, signing_key); |
if (!body_sig) { |
error("Error calculating body signature\n"); |
return 1; |
} |
/* Create preamble */ |
- preamble = CreateKernelPreamble(version, |
+ preamble = CreateKernelPreamble(bp->kernel_version, |
CROS_32BIT_ENTRY_ADDR, |
- bootloader_mem_start, |
- bootloader_mem_size, |
+ bp->bootloader_address, |
+ bp->bootloader_size, |
body_sig, |
pad - key_block_size, |
signing_key); |
@@ -316,17 +495,28 @@ static int Pack(const char* outfile, const char* keyblock_file, |
} |
Debug("0x%" PRIx64 " bytes of key_block\n", key_block_size); |
Debug("0x%" PRIx64 " bytes of preamble\n", preamble->preamble_size); |
- Debug("0x%" PRIx64 " bytes of blob\n", blob_size); |
i = ((1 != fwrite(key_block, key_block_size, 1, f)) || |
- (1 != fwrite(preamble, preamble->preamble_size, 1, f)) || |
- (1 != fwrite(blob, blob_size, 1, f))); |
- fclose(f); |
+ (1 != fwrite(preamble, preamble->preamble_size, 1, f))); |
if (i) { |
error("Can't write output file %s\n", outfile); |
+ fclose(f); |
unlink(outfile); |
return 1; |
} |
+ if (!vblockonly) { |
+ Debug("0x%" PRIx64 " bytes of blob\n", bp->blob_size); |
+ i = (1 != fwrite(bp->blob, bp->blob_size, 1, f)); |
+ if (i) { |
+ error("Can't write output file %s\n", outfile); |
+ fclose(f); |
+ unlink(outfile); |
+ return 1; |
+ } |
+ } |
+ |
+ fclose(f); |
+ |
/* Success */ |
return 0; |
} |
@@ -373,7 +563,7 @@ static int Verify(const char* infile, const char* signpubkey) { |
printf("Key block:\n"); |
data_key = &key_block->data_key; |
- printf(" Size: %" PRIu64 "\n", key_block->key_block_size); |
+ printf(" Size: 0x%" PRIx64 "\n", key_block->key_block_size); |
printf(" Data key algorithm: %" PRIu64 " %s\n", data_key->algorithm, |
(data_key->algorithm < kNumAlgorithms ? |
algo_strings[data_key->algorithm] : "(invalid)")); |
@@ -395,7 +585,7 @@ static int Verify(const char* infile, const char* signpubkey) { |
now += preamble->preamble_size; |
printf("Preamble:\n"); |
- printf(" Size: %" PRIu64 "\n", preamble->preamble_size); |
+ printf(" Size: 0x%" PRIx64 "\n", preamble->preamble_size); |
printf(" Header version: %" PRIu32 ".%" PRIu32"\n", |
preamble->header_version_major, preamble->header_version_minor); |
printf(" Kernel version: %" PRIu64 "\n", preamble->kernel_version); |
@@ -416,8 +606,8 @@ static int Verify(const char* infile, const char* signpubkey) { |
int main(int argc, char* argv[]) { |
- |
char* filename = NULL; |
+ char* oldfile = NULL; |
char* key_block_file = NULL; |
char* signpubkey = NULL; |
char* signprivate = NULL; |
@@ -425,26 +615,39 @@ int main(int argc, char* argv[]) { |
char* vmlinuz = NULL; |
char* bootloader = NULL; |
char* config_file = NULL; |
- uint64_t pad = 65536; |
+ int vblockonly = 0; |
+ uint64_t pad = DEFAULT_PADDING; |
int mode = 0; |
int parse_error = 0; |
char* e; |
- int i; |
+ int i,r; |
+ blob_t *bp; |
- while ((i = getopt_long(argc, argv, "", long_opts, NULL)) != -1) { |
+ |
+ char *progname = strrchr(argv[0], '/'); |
+ if (progname) |
+ progname++; |
+ else |
+ progname = argv[0]; |
+ |
+ while ((i = getopt_long(argc, argv, ":", long_opts, NULL)) != -1) { |
switch (i) { |
case '?': |
/* Unhandled option */ |
- printf("Unknown option\n"); |
parse_error = 1; |
break; |
case OPT_MODE_PACK: |
+ case OPT_MODE_REPACK: |
case OPT_MODE_VERIFY: |
mode = i; |
filename = optarg; |
break; |
+ case OPT_OLDBLOB: |
+ oldfile = optarg; |
+ break; |
+ |
case OPT_KEYBLOCK: |
key_block_file = optarg; |
break; |
@@ -469,10 +672,14 @@ int main(int argc, char* argv[]) { |
config_file = optarg; |
break; |
+ case OPT_VBLOCKONLY: |
+ vblockonly = 1; |
+ break; |
+ |
case OPT_VERSION: |
version = strtoul(optarg, &e, 0); |
if (!*optarg || (e && *e)) { |
- printf("Invalid --version\n"); |
+ fprintf(stderr, "Invalid --version\n"); |
parse_error = 1; |
} |
break; |
@@ -480,7 +687,7 @@ int main(int argc, char* argv[]) { |
case OPT_PAD: |
pad = strtoul(optarg, &e, 0); |
if (!*optarg || (e && *e)) { |
- printf("Invalid --pad\n"); |
+ fprintf(stderr, "Invalid --pad\n"); |
parse_error = 1; |
} |
break; |
@@ -488,16 +695,31 @@ int main(int argc, char* argv[]) { |
} |
if (parse_error) |
- return PrintHelp(); |
+ return PrintHelp(progname); |
switch(mode) { |
case OPT_MODE_PACK: |
- return Pack(filename, key_block_file, signprivate, version, vmlinuz, |
- bootloader, config_file, pad); |
+ bp = NewBlob(version, vmlinuz, bootloader, config_file); |
+ if (!bp) |
+ return 1; |
+ r = Pack(filename, key_block_file, signprivate, bp, pad, vblockonly); |
+ FreeBlob(bp); |
+ return r; |
+ |
+ case OPT_MODE_REPACK: |
+ bp = OldBlob(oldfile); |
+ if (!bp) |
+ return 1; |
+ r = Pack(filename, key_block_file, signprivate, bp, pad, vblockonly); |
+ FreeBlob(bp); |
+ return r; |
+ |
case OPT_MODE_VERIFY: |
return Verify(filename, signpubkey); |
+ |
default: |
- printf("Must specify a mode.\n"); |
- return PrintHelp(); |
+ fprintf(stderr, |
+ "You must specify a mode: --pack, --repack or --verify\n"); |
+ return PrintHelp(progname); |
} |
} |