DCMD_CHR_TCGETSID

Get the process group ID of a controlling terminal's session leader

Synopsis:

#include <sys/dcmd_chr.h>

#define DCMD_CHR_TCGETSID   __DIOF(_DCMD_CHR, 7, pid_t)

Argument	Value
`filedes`	A file descriptor that you obtained by opening the device.
`dcmd`	DCMD_CHR_TCGETSID
`dev_data_ptr`	A pointer to a pid_t
`n_bytes`	`sizeof(pid_t)`
`dev_info_ptr`	NULL

This command gets the process group ID of the session leader for a controlling terminal.

Note: This command is for internal use, and you shouldn't use it directly. Instead use the tcgetsid() cover function.

None.

The process group ID.