Knowledge Base

Check the mount point of a file   ________________________________________________________________________ Applicable Environment ________________________________________________________________________ Topic: Check the mount point of a file SDP: 8.0.0, 7.1.0, 7.0.0, 6.6.0, 6.5.0 Target: Any supported target ________________________________________________________________________ Solution ________________________________________________________________________ On QNX, you can mount multiple file systems and also have multiple Image File Systems (IFS), which represent files in a file system structure. It can be difficult to find the resource manager responsible for a file. The whichdev program (source attached) takes the given path and prints out information about the file owner. It does this by calling devctl()'s with the DCMD_FSYS_MOUNTED_AT and DCMD_FSYS_MOUNTED_ON. See our documentation for more information on these commands. You can also run into a problem that a file is read-only and the reason is that it is located in the read-only IFS. In these cases it handy to know the resource manager that handles a file. Please review the usage information for reference. ________________________________________________________________________ NOTE: This entry has been validated against the SDP version listed above. Use caution when considering this advice for any other SDP version. For supported releases, please reach out to QNX Technical Support if you have any questions/concerns. ________________________________________________________________________ Related Attachments   Attachment Name   Size   Last Modified   whichdev.use   128 bytes   3/5/2024 3:17 PM   whichdev.c   4KB   3/5/2024 3:17 PM

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