获取 boot_mark update_mark

boot_mark update_mark

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#import <sys/stat.h>
#import <sys/sysctl.h>
#define MIB_SIZE 2

-(NSString *)getBoot {

    NSString *timeString = nil;
    int mib[MIB_SIZE];
    size_t size;

    struct timeval boottime;
    mib[0] = CTL_KERN;

    mib[1] = KERN_BOOTTIME;
    size = sizeof(boottime);
    if (sysctl(mib, MIB_SIZE, &boottime, &size, NULL, 0) != -1) {

        timeString = [NSString stringWithFormat:@"%d.%d", (int) boottime.tv_sec, (int) boottime.tv_usec];

    }
    return timeString?:@"";

}

- (NSString *)getUpdate {
    NSString *timeString = nil;
    struct stat sb;
    NSString *enCodePath = @"L3Zhci9tb2JpbGU=";
    NSData *data=[[NSData alloc]initWithBase64EncodedString:enCodePath options:0];
    NSString *dataString = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
    
    const char* dePath = [dataString cStringUsingEncoding:NSUTF8StringEncoding];
    if (stat(dePath, &sb) != -1) {
        timeString = [NSString stringWithFormat:@"%d.%d", (int)sb.st_ctimespec.tv_sec, (int)sb.st_ctimespec.tv_nsec];
        
    } else {
        timeString = @"0.0";
        
    }
    return timeString?:@"";
    
}