sys/src/syscancel.c File Reference

QIO cancel. More...

#include <linux/config.h>
#include <starlet.h>
#include <ddtdef.h>
#include <iodef.h>
#include <ipldef.h>
#include <ssdef.h>
#include <misc.h>
#include <irpdef.h>
#include <ucbdef.h>
#include <ccbdef.h>
#include <system_data_cells.h>
#include <queue.h>
#include <ipl.h>
#include <linux/linkage.h>
#include <linux/sched.h>
#include <exe_routines.h>

Go to the source code of this file.

Functions

asmlinkage int exe_cancel (unsigned short int chan)
 cancel i/o on channel


Detailed Description

QIO cancel.

Author:
Roar Thronęs

Definition in file syscancel.c.


Function Documentation

asmlinkage int exe_cancel ( unsigned short int  chan  ) 

cancel i/o on channel

Parameters:
chan i/o channel

verifies channel legality - MISSING

handle affinity - MISSING

set ipl

pagefault ccb into memory

higher set ipl - MISSING

forklock - MISSING

scan irps

if pids and channels match

and if virtual clear - MISSING

remove irp from queue

clear buffer read bit - MISSING

SS__CANCEL status

check. beware movbuf

insert at postprocessing queue

iopost softint - MISSING

invoke driver cancel routine

unlock forklock - MISSING

relinquish affinity - MISSING

set ipl 0

no oustanding i/o ccb ioc 0, wind 0, return - MISSING

device mounted or foreign mount, return - MISSING

has process section, return - MISSING

NOTFCP set, return - MISSING

if no resources etc to allocate irp, return or sch_rwait - MISSING

irp with acpcontrol etc - MISSING

charge buffer quota - MISSING

release forklock and affinity - MISSING

invoke qioacppkt - MISSING

Definition at line 34 of file syscancel.c.

References _pcb, _ccb::ccb_l_ucb, com_post(), ctl_ga_ccb_table, ctl_gl_pcb, _ddt::ddt_l_cancel, IPL__ASTDEL, _irp::irp_l_ioqfl, _irp::irp_l_iost1, _irp::irp_l_pid, SS__NORMAL, _ucb::ucb_l_ddt, _ucb::ucb_l_ioqfl, and _ucb::ucb_l_irp.

Referenced by exe_dassgn().


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