Question

问题是，当我使用NSTask卸载当前的USB驱动器时，它会给我以下错误：

    2013-06-03 09:39:41.096 NAME[1028:303] in moving file view controller
    dyld: DYLD_ environment variables being ignored because main executable    
    (/usr/sbin/diskutil) has __RESTRICT/__restrict section 
    Unmount of disk1 failed: at least one volume could not be unmounted

我有我的mac的分区所以disk1我认为是mac os。这是我用来卸载驱动器的功能：

    //When I call this function by passing all of these arguments:
    NSArray* arrayForCloseUSBDrive = [[NSArray arrayWithObjects:@"diskutil", @"unmountDisk",@"/Volumes/AAA/",nil]autorelease];
    [Utility handleDrive:@"/usr/bin/env" arrayArguments:arrayForCloseUSBDrive];

    //It will start run this function in Utility class:
    +(void)handleDrive:(NSString*)launchPath arrayArguments:(NSArray*)array
   {
      NSTask *task = [NSTask new];
      [task setLaunchPath:launchPath];
      [task setArguments:array];

      NSPipe *pipe = [NSPipe pipe];
      [task setStandardOutput:pipe];

      [task launch];
      [task waitUntilExit];
   }

Answer 1

找出无法卸载的原因：

当前用户是否安装了卷？
该卷中是否还有任何文件已打开？在终端中，fuser -uc /Volumes/MyMountPoint将向您显示进程以及拥有该文件系统上已打开文件的用户。只要打开任何文件，就无法卸载文件系统。

目标c：使用NSTask卸载USB驱动器时出错

1 个答案: