Obtain information about the process associated with the file descriptor.
#include <sys/procfs.h> #define DCMD_PROC_INFO __DIOF(_DCMD_PROC, __PROC_SUBCMD_PROCFS + 1, procfs_info)
The arguments to devctl() are:
| Argument | Value |
|---|---|
| filedes | A file descriptor for the process. |
| dcmd | DCMD_PROC_INFO |
| dev_data_ptr | A pointer to a procfs_info structure |
| n_bytes | sizeof(procfs_info) |
| dev_info_ptr | NULL |
The argument is a pointer to a procfs_info structure (see debug_process_t in <sys/debug.h>) that's filled in with the required information on return. For example:
procfs_info my_info; devctl( fd, DCMD_PROC_INFO, &my_info, sizeof(my_info), NULL);
For more information, see the section on DCMD_PROC_INFO in the appendix about the /procfs filesystem in The QNX Neutrino Cookbook.