08-26-2001
the includes for the getlimits.c code
For some reason, the include files didn't
come out in the code in the previous posting.
the files are...
sys/time.h
sys/resource.h
unistd.h
stdio.h
stdlib.h
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LEARN ABOUT FREEBSD
bus_adjust_resource
BUS_ADJUST_RESOURCE(9) BSD Kernel Developer's Manual BUS_ADJUST_RESOURCE(9)
NAME
bus_adjust_resource -- adjust resource allocated from a parent bus
SYNOPSIS
#include <sys/param.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
int
bus_adjust_resource(device_t dev, int type, struct resource *r, u_long start, u_long end);
DESCRIPTION
This function is used to ask the parent bus to adjust the resource range assigned to an allocated resource. The resource r should have been
allocated by a previous call to bus_alloc_resource(9). The new resource range must overlap the existing range of r. The type argument
should match the type argument passed to bus_alloc_resource(9) when the resource was initially allocated.
Note that none of the constraints of the original allocation request such as alignment or boundary restrictions are checked by
bus_adjust_resource(). It is the caller's responsibility to enforce any such requirements.
RETURN VALUES
The bus_adjust_resource() method returns zero on success or an error code on failure.
EXAMPLES
Grow an existing memory resource by 4096 bytes.
struct resource *res;
int error;
error = bus_adjust_resource(dev, SYS_RES_MEMORY, res,
rman_get_start(res), rman_get_end(res) + 0x1000);
ERRORS
bus_adjust_resource() will fail if:
[EINVAL] The dev device does not have a parent device.
[EINVAL] The r resource is a shared resource.
[EINVAL] The new address range does not overlap with the existing address range of r.
[EBUSY] The new address range conflicts with another allocated resource.
SEE ALSO
bus_alloc_resource(9), bus_release_resource(9), device(9), driver(9)
BSD
April 29, 2011 BSD