SVR5

drv_setparm(D3)

drv_setparm -- set kernel state information

Synopsis

   #include <sys/types.h>
   #include <sys/ddi.h>
   
   int drv_setparm(ulong_t parm, ulong_t value);

Description

drv_setparm verifies that parm corresponds to a kernel parameter that may be modified. If the value of parm corresponds to a parameter that may not be modified, -1 is returned. Otherwise, the parameter is incremented by value.

Arguments

parm: The kernel parameter to be updated.
value: The value to be added to the parameter.

Return values

If the function is successful, 0 is returned. Otherwise, -1 is returned to indicate that parm specified an invalid parameter.

Usage

No checking is performed to determine the validity of value. It is the driver's responsibility to guarantee the correctness of value.

Valid values for parm are:

SYSCANC: Add value to the count of the number of characters received from a terminal device after the characters have been processed to remove special characters such as ``break'' or ``backspace''.
SYSMINT: Add value to the count of the number of modem interrupts received.
SYSOUTC: Add value to the count of the number of characters output to a terminal device.
SYSRAWC: Add value to the count of the number of characters received from a terminal device, before canonical processing has occurred.
SYSRINT: Add value to the count of the number of interrupts generated by data ready to be received from a terminal device.
SYSXINT: Add value to the count of the number of interrupts generated by data ready to be transmitted to a terminal device.

Context and synchronization

Non-blockable, interrupt, user, or blockable context.

Hardware applicability

All

Version applicability

ddi: 1, 2, 3, 4, 5, 5mp, 6, 6mp, 7, 7mp, 7.1, 7.1mp, 8, 8mp

Future directions

This interface is expected to be replaced or modified in a future release.

References

drv_getparm(D3)