int
processBootOptions()
{
const char * cp = gBootArgs;
const char * val = 0;
const char * kernel;
int cnt;
int userCnt;
int cntRemaining;
char * argP;
char uuidStr[64];
bool uuidSet = false;
char * configKernelFlags;
char * valueBuffer;
valueBuffer = malloc(VALUE_SIZE);
skipblanks( &cp );
// Update the unit and partition number.
if ( gBootVolume )
{
if (!( gBootVolume->flags & kBVFlagNativeBoot ))
{
readBootSector( gBootVolume->biosdev, gBootVolume->part_boff,
(void *) 0x7c00 );
//
// Setup edx, and signal intention to chain load the
// foreign booter.
//
chainbootdev = gBootVolume->biosdev;
chainbootflag = 1;
return 1;
}
setRootVolume(gBootVolume);
}
// If no boot volume fail immediately because we're just going to fail
// trying to load the config file anyway.
else
return -1;
// Load config table specified by the user, or use the default.
if (!getValueForBootKey(cp, "config", &val, &cnt)) {
val = 0;
cnt = 0;
}
// Load com.apple.Boot.plist from the selected volume
// and use its contents to override default bootConfig.
// This is not a mandatory operation anymore.
loadOverrideConfig(&bootInfo->overrideConfig);
// Use the kernel name specified by the user, or fetch the name
// in the config table, or use the default if not specified.
// Specifying a kernel name on the command line, or specifying
// a non-default kernel name in the config file counts as
// overriding the kernel, which causes the kernelcache not
// to be used.
gOverrideKernel = false;
if (( kernel = extractKernelName((char **)&cp) )) {
strcpy( bootInfo->bootFile, kernel );
gOverrideKernel = true;
} else {
if ( getValueForKey( kKernelNameKey, &val, &cnt, &bootInfo->bootConfig ) ) {
strlcpy( bootInfo->bootFile, val, cnt+1 );
if (strcmp( bootInfo->bootFile, kDefaultKernel ) != 0) {
gOverrideKernel = true;
}
} else {
strcpy( bootInfo->bootFile, kDefaultKernel );
}
}
cntRemaining = BOOT_STRING_LEN - 2; // save 1 for NULL, 1 for space
argP = bootArgs->CommandLine;
// Get config table kernel flags, if not ignored.
if (getValueForBootKey(cp, kIgnoreBootFileFlag, &val, &cnt) ||
!getValueForKey( kKernelFlagsKey, &val, &cnt, &bootInfo->bootConfig )) {
val = "";
cnt = 0;
}
configKernelFlags = malloc(cnt + 1);
strlcpy(configKernelFlags, val, cnt + 1);
if (processBootArgument(kBootUUIDKey, cp, configKernelFlags, bootInfo->config, &argP, &cntRemaining, 0)) {
// boot-uuid was set either on the command-line
// or in the config file.
uuidSet = true;
} else {
//
// Try an alternate method for getting the root UUID on boot helper partitions.
//
if (gBootVolume->flags & kBVFlagBooter)
{
if((loadHelperConfig(&bootInfo->helperConfig) == 0)
&& getValueForKey(kHelperRootUUIDKey, &val, &cnt, &bootInfo->helperConfig) )
{
getValueForKey(kHelperRootUUIDKey, &val, &cnt, &bootInfo->helperConfig);
copyArgument(kBootUUIDKey, val, cnt, &argP, &cntRemaining);
uuidSet = true;
}
}
if (!uuidSet && gBootVolume->fs_getuuid && gBootVolume->fs_getuuid (gBootVolume, uuidStr) == 0) {
verbose("Setting boot-uuid to: %s\n", uuidStr);
copyArgument(kBootUUIDKey, uuidStr, strlen(uuidStr), &argP, &cntRemaining);
uuidSet = true;
}
}
if (!processBootArgument(kRootDeviceKey, cp, configKernelFlags, bootInfo->config, &argP, &cntRemaining, gRootDevice)) {
cnt = 0;
if ( getValueForKey( kBootDeviceKey, &val, &cnt, &bootInfo->bootConfig)) {
valueBuffer[0] = '*';
cnt++;
strlcpy(valueBuffer + 1, val, cnt);
val = valueBuffer;
} else {
if (uuidSet) {
val = "*uuid";
cnt = 5;
} else {
// Don't set "rd=.." if there is no boot device key
// and no UUID.
val = "";
cnt = 0;
}
}
if (cnt > 0) {
copyArgument( kRootDeviceKey, val, cnt, &argP, &cntRemaining);
}
strlcpy( gRootDevice, val, (cnt + 1));
}
/*
* Removed. We don't need this anymore.
*
if (!processBootArgument(kPlatformKey, cp, configKernelFlags, bootInfo->config, &argP, &cntRemaining, gPlatformName)) {
getPlatformName(gPlatformName);
copyArgument(kPlatformKey, gPlatformName, strlen(gPlatformName), &argP, &cntRemaining);
}
*/
if (!getValueForBootKey(cp, kSafeModeFlag, &val, &cnt) &&
!getValueForBootKey(configKernelFlags, kSafeModeFlag, &val, &cnt)) {
if (gBootMode & kBootModeSafe) {
copyArgument(0, kSafeModeFlag, strlen(kSafeModeFlag), &argP, &cntRemaining);
}
}
// Store the merged kernel flags and boot args.
cnt = strlen(configKernelFlags);
if (cnt) {
if (cnt > cntRemaining) {
error("Warning: boot arguments too long, truncating\n");
cnt = cntRemaining;
}
strncpy(argP, configKernelFlags, cnt);
argP[cnt++] = ' ';
cntRemaining -= cnt;
}
userCnt = strlen(cp);
if (userCnt > cntRemaining) {
error("Warning: boot arguments too long, truncating\n");
userCnt = cntRemaining;
}
strncpy(&argP[cnt], cp, userCnt);
argP[cnt+userCnt] = '\0';
if(!shouldboot)
{
gVerboseMode = getValueForKey( kVerboseModeFlag, &val, &cnt, &bootInfo->bootConfig ) ||
getValueForKey( kSingleUserModeFlag, &val, &cnt, &bootInfo->bootConfig );
gBootMode = ( getValueForKey( kSafeModeFlag, &val, &cnt, &bootInfo->bootConfig ) ) ?
kBootModeSafe : kBootModeNormal;
if ( getValueForKey( kIgnoreCachesFlag, &val, &cnt, &bootInfo->bootConfig ) ) {
gBootMode = kBootModeSafe;
}
}
if ( getValueForKey( kMKextCacheKey, &val, &cnt, &bootInfo->bootConfig ) )
{
strlcpy(gMKextName, val, cnt + 1);
}
free(configKernelFlags);
free(valueBuffer);
return 0;
}
int
processBootOptions(void)
{
char *cp_cache = (char*)(uint32_t)get_env(envgBootArgs);
if (cp_cache)
{
bzero(gBootArgs,sizeof(gBootArgs));
strlcpy(gBootArgs, cp_cache,sizeof(gBootArgs));
}
const char * cp = gBootArgs;
const char * val = 0;
const char * kernel;
int cnt;
int userCnt;
char * argP;
char * configKernelFlags;
int ArgCntRemaining;
skipblanks( &cp );
// Update the unit and partition number.
if ( ((BVRef)(uint32_t)get_env(envgBootVolume)) )
{
#ifndef NO_MULTIBOOT_SUPPORT
if (!( ((BVRef)(uint32_t)get_env(envgBootVolume))->flags & kBVFlagNativeBoot ))
{
readBootSector( ((BVRef)(uint32_t)get_env(envgBootVolume))->biosdev, ((BVRef)(uint32_t)get_env(envgBootVolume))->part_boff,
(void *) 0x7c00 );
//
// Setup edx, and signal intention to chain load the
// foreign booter.
//
extern unsigned char chainbootdev;
extern unsigned char chainbootflag;
chainbootdev = ((BVRef)(uint32_t)get_env(envgBootVolume))->biosdev;
chainbootflag = 1;
return 1;
}
#endif
setRootVolume(((BVRef)(uint32_t)get_env(envgBootVolume)));
}
// If no boot volume fail immediately because we're just going to fail
// trying to load the config file anyway.
else
return -1;
// Load config table specified by the user, or use the default.
if (!getValueForBootKey(cp, "config", &val, &cnt)) {
val = 0;
cnt = 0;
}
// Load com.apple.Boot.plist from the selected volume
// and use its contents to override default bootConfig.
// This is not a mandatory opeartion anymore.
loadOverrideConfig();
// Load System com.apple.boot.plist config file
loadSystemConfig();
#if virtualM || PCI_FIX // we can simply make an option for this fix
addBootArg("npci=0x2000");
#endif
#if verbose
addBootArg("-v");
#endif
// Use the kernel name specified by the user, or fetch the name
// in the config table, or use the default if not specified.
// Specifying a kernel name on the command line, or specifying
// a non-default kernel name in the config file counts as
// overriding the kernel, which causes the kernelcache not
// to be used.
safe_set_env(envgOverrideKernel,false);
if (( kernel = extractKernelName((char **)&cp) )) {
strlcpy( bootInfo->bootFile, kernel, sizeof(bootInfo->bootFile) );
safe_set_env(envgOverrideKernel,true);
} else {
if ( getValueForKey( kKernelNameKey, &val, &cnt, DEFAULT_BOOT_CONFIG ) ) {
strlcpy( bootInfo->bootFile, val, sizeof(bootInfo->bootFile) );
if (strncmp( bootInfo->bootFile, kDefaultKernel, sizeof(kDefaultKernel) ) != 0) {
safe_set_env(envgOverrideKernel,true);
}
} else if (((BVRef)(uint32_t)get_env(envgBootVolume))->kernelfound == true) {
strlcpy( bootInfo->bootFile, kDefaultKernel, sizeof(bootInfo->bootFile) );
} else {
printf("No kernel found on this volume : hd(%d,%d)\n", BIOS_DEV_UNIT(((BVRef)(uint32_t)get_env(envgBootVolume))), ((BVRef)(uint32_t)get_env(envgBootVolume))->part_no);
sleep(1);
return -1;
}
}
ArgCntRemaining = BOOT_STRING_LEN - 2; // save 1 for NULL, 1 for space
argP = bootArgs->CommandLine;
// Get config table kernel flags, if not ignored.
if (getValueForBootKey(cp, kIgnoreBootFileFlag, &val, &cnt) ||
!getValueForKey( kKernelFlagsKey, &val, &cnt, DEFAULT_BOOT_CONFIG )) {
val = "";
cnt = 0;
}
configKernelFlags = newString(val);
{
bool isSafeMode = false;
if (configKernelFlags) {
isSafeMode = getValueForBootKey(configKernelFlags, kSafeModeFlag, &val, &cnt);
}
if (!getValueForBootKey(cp, kSafeModeFlag, &val, &cnt) &&
(isSafeMode == false)) {
if (get_env(envgBootMode) & kBootModeSafe) {
copyArgument(0, kSafeModeFlag, strlen(kSafeModeFlag), &argP, &ArgCntRemaining);
}
}
}
if (configKernelFlags) {
// Store the merged kernel flags and boot args.
cnt = strlen(configKernelFlags);
if (cnt) {
if (cnt > ArgCntRemaining) {
printf("Warning: boot arguments too long, truncating\n");
cnt = ArgCntRemaining;
}
strncpy(argP, configKernelFlags, cnt);
argP[cnt++] = ' ';
ArgCntRemaining -= cnt;
}
}
userCnt = strlen(cp);
if (userCnt > ArgCntRemaining) {
printf("Warning: boot arguments too long, truncating\n");
userCnt = ArgCntRemaining;
}
strncpy(&argP[cnt], cp, userCnt);
argP[cnt+userCnt] = '\0';
if(!get_env(envShouldboot))
{
bool gVerboseMode = getValueForKey( kVerboseModeFlag, &val, &cnt, DEFAULT_BOOT_CONFIG ) ||
getValueForKey( kSingleUserModeFlag, &val, &cnt, DEFAULT_BOOT_CONFIG );
safe_set_env(envgVerboseMode, gVerboseMode);
long gBootMode = ( getValueForKey( kSafeModeFlag, &val, &cnt, DEFAULT_BOOT_CONFIG ) ) ?
kBootModeSafe : kBootModeNormal;
safe_set_env(envgBootMode,gBootMode);
if ( getValueForKey( kIgnoreCachesFlag, &val, &cnt, DEFAULT_BOOT_CONFIG ) ) {
gBootMode = kBootModeSafe;
safe_set_env(envgBootMode,gBootMode);
}
}
if ( getValueForKey( kMKextCacheKey, &val, &cnt, DEFAULT_BOOT_CONFIG ) )
{
char * MKextName = (char*)(uint32_t)get_env(envMKextName);
strlcpy(MKextName,val,Cache_len_name);
}
if (configKernelFlags)
{
free(configKernelFlags);
}
safe_set_env(envArgCntRemaining,ArgCntRemaining);
return 0;
}
