#include <paths.h>
#include <dirent.h>
-#include <IOKit/ps/IOPowerSourcesPrivate.h>
-#include <IOKit/pwr_mgt/IOPMLibPrivate.h>
#include <CoreFoundation/CoreFoundation.h>
#include <default_pager/default_pager_types.h>
-#include <default_pager_alerts_server.h>
+#include <default_pager_alertsServer.h>
#include <backing_store_alerts.h>
-#include <backing_store_triggers_server.h>
-
+#include <backing_store_triggersServer.h>
/*
* HI_WATER_DEFAULT set to this funny value to
#define MAX_LIMITS 8
+#if TARGET_OS_EMBEDDED
+
+#include <System/sys/content_protection.h>
+
+#define USE_SYSTEMCONFIGURATION_PRIVATE_HEADERS 1
+#include <SystemConfiguration/SystemConfiguration.h>
+
+enum {
+ VM_PAGING_MODE_DISABLED = 0,
+ VM_PAGING_MODE_FREEZE,
+ VM_PAGING_MODE_DYNAMIC
+};
+
+#define VM_FREEZE_SYSCTL "vm.freeze_enabled"
+#define FREEZE_FIXED_SWAP_SIZE (128 * 1024 * 1024)
+#endif
struct limit {
unsigned int size;
if (fd == -1) {
/* force error recovery below */
error = -1;
- } else {
+ }
+#if TARGET_OS_EMBEDDED
+ else {
+ error = fcntl(fd, F_SETPROTECTIONCLASS, PROTECTION_CLASS_F);
+ }
+#endif
+
+ if(!error) {
error = fcntl(fd, F_SETSIZE, &filesize);
if(error) {
error = ftruncate(fd, filesize);
exit(EXIT_FAILURE);
}
+#if TARGET_OS_EMBEDDED
+ error = fcntl(fd, F_SETPROTECTIONCLASS, PROTECTION_CLASS_F);
+ if (error == -1) {
+ fprintf(stderr, "dynamic_pager: cannot set file protection class!\n");
+ unlink(subfile);
+ close(fd);
+ exit(EXIT_FAILURE);
+ }
+#endif
+
error = fcntl(fd, F_SETSIZE, &filesize);
if(error) {
error = ftruncate(fd, filesize);
closedir(dir);
}
-#define VM_PREFS_PLIST "/Library/Preferences/com.apple.virtualMemory.plist"
-#define VM_PREFS_ENCRYPT_SWAP_KEY "UseEncryptedSwap"
+#define VM_PREFS_PLIST "/Library/Preferences/com.apple.virtualMemory.plist"
+#define VM_PREFS_DISABLE_ENCRYPT_SWAP_KEY "DisableEncryptedSwap"
static boolean_t
should_encrypt_swap(void)
CFDataRef resourceData;
SInt32 errorCode;
CFURLRef fileURL;
- CFTypeRef value;
- boolean_t should_encrypt;
- boolean_t explicit_value;
-
- explicit_value = false;
- should_encrypt = true;
+ CFTypeRef disable_encrypted_swap;
+ boolean_t should_encrypt = TRUE;
+ boolean_t explicit_value = FALSE;
fileURL = CFURLCreateFromFileSystemRepresentation(kCFAllocatorDefault, (const UInt8 *)VM_PREFS_PLIST, strlen(VM_PREFS_PLIST), false);
if (fileURL == NULL) {
propertyListType = CFGetTypeID(propertyList);
if (propertyListType == CFDictionaryGetTypeID()) {
- value = (CFTypeRef) CFDictionaryGetValue((CFDictionaryRef) propertyList, CFSTR(VM_PREFS_ENCRYPT_SWAP_KEY));
- if (value == NULL) {
- /* no value: use the default value */
- } else if (CFGetTypeID(value) != CFBooleanGetTypeID()) {
+ disable_encrypted_swap = (CFTypeRef) CFDictionaryGetValue((CFDictionaryRef) propertyList, CFSTR(VM_PREFS_DISABLE_ENCRYPT_SWAP_KEY));
+ if (disable_encrypted_swap == NULL) {
+ /* no value: use the default value i.e. encrypted swap ON */
+ } else if (CFGetTypeID(disable_encrypted_swap) != CFBooleanGetTypeID()) {
fprintf(stderr, "%s: wrong type for key \"%s\"\n",
- getprogname(), VM_PREFS_ENCRYPT_SWAP_KEY);
+ getprogname(), VM_PREFS_DISABLE_ENCRYPT_SWAP_KEY);
/* bogus value, assume it's "true" for safety's sake */
- should_encrypt = true;
- explicit_value = true;
+ should_encrypt = TRUE;
+ explicit_value = TRUE;
} else {
- should_encrypt = CFBooleanGetValue((CFBooleanRef)value);
- explicit_value = true;
+ should_encrypt = CFBooleanGetValue((CFBooleanRef)disable_encrypted_swap) ? FALSE : TRUE;
+ explicit_value = TRUE;
}
}
else {
if (! explicit_value) {
#if TARGET_OS_EMBEDDED
should_encrypt = FALSE;
-#else
- /* by default, encrypt swap on laptops only */
- /*
- * Look for battery power source.
- */
- should_encrypt = (kCFBooleanTrue == IOPSPowerSourceSupported(NULL, CFSTR(kIOPMBatteryPowerKey)));
- /*fprintf(stderr, "dynamic_pager: battery power source: %d\n", should_encrypt);*/
#endif
}
return should_encrypt;
}
+#if TARGET_OS_EMBEDDED
+
+#define VM_PREFS_PAGING_MODE_PLIST "com.apple.virtualMemoryMode.plist"
+#define VM_PREFS_PAGING_MODE_KEY "Mode"
+
+static uint32_t
+get_paging_mode(void)
+{
+ SCPreferencesRef paging_prefs;
+ uint32_t paging_mode;
+
+ paging_mode = VM_PAGING_MODE_FREEZE; /* default */
+
+ paging_prefs = SCPreferencesCreate(NULL, CFSTR("dynamic_pager"), CFSTR(VM_PREFS_PAGING_MODE_PLIST));
+ if (paging_prefs) {
+ CFNumberRef value;
+
+ value = SCPreferencesGetValue(paging_prefs, CFSTR(VM_PREFS_PAGING_MODE_KEY));
+
+ if (value && (CFGetTypeID( value ) == CFNumberGetTypeID() ) ) {
+ CFNumberGetValue((CFNumberRef)value, kCFNumberIntType, &paging_mode);
+ }
+
+ CFRelease(paging_prefs);
+ }
+
+ return paging_mode;
+}
+
+#endif
+
int
main(int argc, char **argv)
{
int ch;
int variable_sized = 1,flags=0;
boolean_t encrypted_swap;
+ static char tmp[1024];
+ struct statfs sfs;
+ char *q;
+#if TARGET_OS_EMBEDDED
+ int err;
+ uint32_t paging_mode;
+ size_t paging_mode_length;
+#endif
/*
setlinebuf(stdout);
}
}
+ /*
+ * get rid of the filename at the end of the swap file specification
+ * we only want the portion of the pathname that should already exist
+ */
+ strcpy(tmp, fileroot);
+ if ((q = strrchr(tmp, '/')))
+ *q = 0;
+
+ /*
+ * Remove all files in the swap directory.
+ */
+ clean_swap_directory(tmp);
+
+#if TARGET_OS_EMBEDDED
+ paging_mode = get_paging_mode();
+ paging_mode_length = sizeof(paging_mode);
+
+ switch (paging_mode) {
+ case VM_PAGING_MODE_DISABLED:
+ /* Paging disabled; nothing to do here so exit */
+ exit(EXIT_SUCCESS);
+
+ case VM_PAGING_MODE_FREEZE:
+ /* Freeze mode; one swap file of fixed size, so enable and override defaults if set */
+ err = sysctlbyname(VM_FREEZE_SYSCTL, NULL, 0, &paging_mode, paging_mode_length);
+ if (err < 0) {
+ (void)fprintf(stderr, "dynamic_pager: cannot set %s\n", VM_FREEZE_SYSCTL);
+ exit(EXIT_FAILURE);
+ }
+ variable_sized = 0;
+ limits[0].size = FREEZE_FIXED_SWAP_SIZE;
+ break;
+
+ case VM_PAGING_MODE_DYNAMIC:
+ /* Dynamic paging selected; proceed normally */
+ break;
+
+ default:
+ /* Invalid option */
+ (void)fprintf(stderr, "dynamic_pager: invalid paging_mode %d\n", paging_mode);
+ exit(EXIT_FAILURE);
+ }
+#endif
+
+ if (statfs(tmp, &sfs) == -1) {
+ /*
+ * Setup the swap directory.
+ */
+ if (mkdir(tmp, 0755) == -1) {
+ (void)fprintf(stderr, "dynamic_pager: cannot create swap directory %s\n", tmp);
+ exit(EXIT_FAILURE);
+ }
+ }
+ chown(tmp, 0, 0);
+
if (variable_sized) {
- static char tmp[1024];
- struct statfs sfs;
- char *q;
int i;
int mib[4];
size_t len;
* an additional swap file when it really isn't necessary
*/
- /*
- * get rid of the filename at the end of the swap file specification
- * we only want the portion of the pathname that should already exist
- */
- strcpy(tmp, fileroot);
- if ((q = strrchr(tmp, '/')))
- *q = 0;
-
- /*
- * Remove all files in the swap directory.
- */
- clean_swap_directory(tmp);
-
- if (statfs(tmp, &sfs) == -1) {
+ if (statfs(tmp, &sfs) == -1) {
/*
- * Setup the swap directory.
+ * We really can't get filesystem status,
+ * so let's not limit the swap files...
*/
- if (mkdir(tmp, 0755) == -1) {
- (void)fprintf(stderr, "dynamic_pager: cannot create swap directory %s\n", tmp);
- exit(EXIT_FAILURE);
- }
- chown(tmp, 0, 0);
-
- if (statfs(tmp, &sfs) == -1) {
- /*
- * We really can't get filesystem status,
- * so let's not limit the swap files...
- */
- fs_limit = (u_int64_t) -1;
- }
- }
+ fs_limit = (u_int64_t) -1;
+ }
if (fs_limit != (u_int64_t) -1) {
/*
projects / apple / system_cmds.git / blobdiff