卸载驱动器/音量而不弹出 [英] Unmounting Drive/volume without ejecting

问题描述

我想要卸载磁盘时不要EJECTING。要这样做，我尝试下面的代码

  {
 NSString * path; 
 CFStringRef * volumeName =（__ bridge CFStringRef）path; 
 DASessionRef session = DASessionCreate（kCFAllocatorDefault）; 
 CFURLRef pathRef = CFURLCreateWithString（NULL，CFSTR（/ volumes / Untitled），NULL）; 
 DADiskRef disk = DADiskCreateFromVolumePath（kCFAllocatorDefault，session，pathRef）; 
 DADiskUnmount（disk，kDADiskUnmountOptionForce，NULL，NULL）; 
} 
  

这段代码来自这个问题，感谢@zeFree

想要动态路径到卷，其中在代码中它的静态。我尝试将NSString更改为CFStringRef，然后尝试在路径（/ volumes / Untitled）的位置使用，但它仍然相同。

欢迎任何建议。 / p>

解决方案

首先，强烈建议您不要使用 kDADiskUnmountOptionForce / p>

这是一种通过基本错误处理和内存管理卸载某个卷的方法。

   - （BOOL）unmountVolumeAtURL：（NSURL *）url 
 BOOL returnValue = NO; 
 DASessionRef session = DASessionCreate（kCFAllocatorDefault）; 
 if（session）{
 DADiskRef disk = DADiskCreateFromVolumePath（kCFAllocatorDefault，session，（__bridge CFURLRef）url）; 
 if（disk）{
 DADiskUnmount（disk，kDADiskUnmountOptionDefault，NULL，NULL）; 
 returnValue = YES; 
 CFRelease（disk）; 
} else {
 NSLog（@无法从％@创建磁盘引用，url.path）; 
} 
} else {
 NSLog（@无法创建DiskArbritation会话）; 
} 
 
 if（session）CFRelease（session）; 
 return returnValue; 
} 
  

错误处理可以通过在 DADiskUnmount 函数。

I am want to unmount a disk WITHOUT EJECTING. To do that I tried following code

{
  NSString *path;
  CFStringRef *volumeName=(__bridge CFStringRef)path;
  DASessionRef session = DASessionCreate(kCFAllocatorDefault);
  CFURLRef pathRef = CFURLCreateWithString(NULL, CFSTR("/volumes/Untitled"), NULL);
  DADiskRef disk = DADiskCreateFromVolumePath(kCFAllocatorDefault, session, pathRef);
  DADiskUnmount(disk, kDADiskUnmountOptionForce, NULL, NULL);
}

This code is from this question, Thanks to @zeFree

Its working but I want dynamic path to the volume where as in the code its static. I tried changing NSString to CFStringRef and then tried to use at place of path("/volumes/Untitled") mention but its still same.

Any suggestion is welcome.

解决方案

First of all, you are strongly discouraged from using kDADiskUnmountOptionForce.

This is a method to unmount a volume at given URL with basic error handling and memory management.

- (BOOL)unmountVolumeAtURL:(NSURL *)url
    BOOL returnValue = NO;
    DASessionRef session = DASessionCreate(kCFAllocatorDefault);
    if (session) {
        DADiskRef disk = DADiskCreateFromVolumePath(kCFAllocatorDefault, session, (__bridge CFURLRef)url);
        if (disk) {
            DADiskUnmount(disk, kDADiskUnmountOptionDefault, NULL , NULL);
            returnValue = YES;
            CFRelease(disk);
        } else {
            NSLog(@"Could't create disk reference from %@", url.path);
        }
    } else {
      NSLog(@"Could't create DiskArbritation session");
    }

    if (session) CFRelease(session);
    return returnValue;
}

The error handling could be still improved by providing a callback handler in the DADiskUnmount function.

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