I$Close
From NitrOS-9
| Close Path | Terminates an I/O path |
| OS9 I$Close 103F 8F |
Entry Conditions
A path number
Error Output
CC carry set on error
B error code, if any
Additional Information
- Close Path terminates the I/O path to the file or device specified by path number. Until you use another Open, Dup, or Create system call for that path, you can no longer perform I/O to the file or device.
- If you close a path to a single-user device, the device becomes available to other requesting processes. NitrOS-9 deallocates internally managed buffers and descriptors.
- The Exit system call automatically closes all open paths. Therefore, you might not need to use the Close Path system call to close some paths.
- Do not close a standard I/O path unless you want to change the file or device to which it corresponds.
- Close Path performs an implied I$Detach call. If it causes the device link count to become 0, the device termination routine is executed. See I$Detach for additional information.
