Gets the parent process ID of the specified process.
#include <sys/types.h>
#include <sys/errno.h>pid_t getppidx ( ProcessID)
pid_t ProcessID;
| Item | Description |
|---|---|
| ProcessID | Specifies the process ID. If this parameter is 0, then the parent process ID of the calling process will be returned. |
The getppidx kernel service returns the parent process ID of the specified process.
The getppidx kernel service can be called from the process environment only.
| Item | Description |
|---|---|
| -1 | Indicates that the ProcessID parameter is invalid. |
The getppidx service returns the parent process ID of the calling process.