permissions

问题 How can I check if a file has read permissions in C? 回答1: Use access(2) in POSIX. In Standard C, the best you can do is try to open it with fopen() and see if it succeeds. If fopen() returns NULL , you can try to use errno to distinguish between the "File does not exist" ( errno == ENOENT ) and "Permission denied" ( errno == EACCES ) cases - but unfortunately those two errno values are only defined by POSIX as well. (Even on POSIX, in most cases the best thing to do is try to open the file,

问题 Is there a way to enforce tagging while creating EC2-Instances? I,e user cannot launch an instance without certain tags. And can I use that tags to give control to particular instance depending on the tag? 回答1: Yes, you have to use the "ec2:CreateAction" condition to limit the tag creating while creating the resource (instance/volume) and "aws:RequestTag" condition to control which tag key-value is required to create the resource. There are example policies here and for more information,

问题 I am the owner of a project and want to give Permissions to another user to view Logs of Google Cloud Build, but I can not figure out which Role / Permission this user needs . Roles I've unsuccessfully tried are: Cloud Build Editor, Cloud Build Viewer, Stackdriver Debugger Agent, Stackdriver Debugger User, Cloud Trace Admin, Logging Admin, Private Logs Viewer, Logs Viewer, Monitoring Admin 回答1: Google Cloud enterprise support confirmed to me that the only role that currently grants this is

问题 I am the owner of a project and want to give Permissions to another user to view Logs of Google Cloud Build, but I can not figure out which Role / Permission this user needs . Roles I've unsuccessfully tried are: Cloud Build Editor, Cloud Build Viewer, Stackdriver Debugger Agent, Stackdriver Debugger User, Cloud Trace Admin, Logging Admin, Private Logs Viewer, Logs Viewer, Monitoring Admin 回答1: Google Cloud enterprise support confirmed to me that the only role that currently grants this is

问题 I just migrated my sourcecode to Androidx, since I did that my share function to share a sound is no longer working. the Logcat says: Failed to save file: /storage/emulated/0/appfolder/testsound.mp3 (Permission denied) This is the part where it saves the sound: final String fileName = soundObject.getItemName() + ".mp3"; File storage = Environment.getExternalStorageDirectory(); File directory = new File(storage.getAbsolutePath() + "/appfolder/"); directory.mkdirs(); final File file = new File

问题 My iOS App need to take photos from camera or need to select from photo library. I have the entries in the plist and do the " AVCaptureDevice.requestAccess " to request permissions. And App is working fine so far in all iPhones except iPhone 11 pro max. in iPhone 11 Pro max It does not prompt user for camera permissions and also in the settings it doesn't show and entry like below. If any one has an Idea to fix this issue you are welcome to answer. iPhone 8 with iOS13.3 shows the camera

问题 My iOS App need to take photos from camera or need to select from photo library. I have the entries in the plist and do the " AVCaptureDevice.requestAccess " to request permissions. And App is working fine so far in all iPhones except iPhone 11 pro max. in iPhone 11 Pro max It does not prompt user for camera permissions and also in the settings it doesn't show and entry like below. If any one has an Idea to fix this issue you are welcome to answer. iPhone 8 with iOS13.3 shows the camera

问题 Does anybody know what user privileges are needed for the following code needs to successfully execute as a scheduled task on Windows Server 2003: System.Diagnostics.Process.GetProcessesByName(Process.GetCurrentProcess().ProcessName) When NOT running as scheduled task i.e. under a logged in user, as long as the user is a member of "Performance Monitor Users", this code will not throw an exception. When running as a scheduled task under the same user account, it fails. The only way I can get

问题 Does anybody know what user privileges are needed for the following code needs to successfully execute as a scheduled task on Windows Server 2003: System.Diagnostics.Process.GetProcessesByName(Process.GetCurrentProcess().ProcessName) When NOT running as scheduled task i.e. under a logged in user, as long as the user is a member of "Performance Monitor Users", this code will not throw an exception. When running as a scheduled task under the same user account, it fails. The only way I can get

问题 After upgrading macOS to Catalina, my Anaconda installation was helpfully reconfigured by Apple. Advice from the Anaconda website suggested a fresh install was the best way to go. Did that and all seemed good. I use spyder from the Anaconda navigator. But trying a previously running python code failed due to apparent file permission problems. For example, file='/Users/stingay/Documents/Coaching/WAIS/2019:20/041019/Race Walk Test-2019-10-04T16.29.13.774-C5612E80FB1D-Accelerometer.csv' with