Name | Synopsis | Description | Return Values | Errors | Attributes | See Also
#include <stdlib.h> int unlockpt(int fildes);
The unlockpt() function unlocks the slave pseudo-terminal device associated with the master to which fildes refers.
Portable applications must call unlockpt() before opening the slave side of a pseudo-terminal device.
Upon successful completion, unlockpt() returns 0. Otherwise, it returns -1 and sets errno to indicate the error.
The unlockpt() function may fail if:
The fildes argument is not a file descriptor open for writing.
The fildes argument is not associated with a master pseudo-terminal device.
See attributes(5) for descriptions of the following attributes:
ATTRIBUTE TYPE |
ATTRIBUTE VALUE |
---|---|
Interface Stability |
Standard |
MT-Level |
Safe |
Name | Synopsis | Description | Return Values | Errors | Attributes | See Also