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1633 |
jcastillo |
#ifndef _LINUX_KERNELD_H
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#define _LINUX_KERNELD_H
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#include <linux/posix_types.h>
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#define KERNELD_SYSTEM 1
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#define KERNELD_REQUEST_MODULE 2 /* "insmod" */
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#define KERNELD_RELEASE_MODULE 3 /* "rmmod" */
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#define KERNELD_DELAYED_RELEASE_MODULE 4 /* "rmmod" */
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#define KERNELD_CANCEL_RELEASE_MODULE 5 /* "rmmod" */
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#define KERNELD_REQUEST_ROUTE 6 /* from net/ipv4/route.c */
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#define KERNELD_BLANKER 7 /* from drivers/char/console.c */
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#define KERNELD_ARP 256 /* from net/ipv4/arp.c */
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/*
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* Uncomment the following line for the new kerneld protocol
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* This includes the pid of the kernel level requester into the kerneld header
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*/
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/*
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#define NEW_KERNELD_PROTOCOL
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*/
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#ifdef NEW_KERNELD_PROTOCOL
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#define OLDIPC_KERNELD 00040000 /* use the kerneld message channel */
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#define IPC_KERNELD 00140000 /* use the kerneld message channel, new protocol */
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#define KDHDR (sizeof(long) + sizeof(short) + sizeof(short))
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#define NULL_KDHDR 0, 2, 0
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#else
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#define IPC_KERNELD 00040000 /* use the kerneld message channel */
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#define KDHDR (sizeof(long))
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#define NULL_KDHDR 0
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#endif
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#define KERNELD_MAXCMD 0x7ffeffff
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#define KERNELD_MINSEQ 0x7fff0000 /* "commands" legal up to 0x7ffeffff */
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#define KERNELD_WAIT 0x80000000
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#define KERNELD_NOWAIT 0
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struct kerneld_msg {
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long mtype;
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long id;
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#ifdef NEW_KERNELD_PROTOCOL
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short version;
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short pid;
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#endif
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#ifdef __KERNEL__
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char *text;
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#else
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char text[1];
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#endif /* __KERNEL__ */
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};
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#ifdef __KERNEL__
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extern int kerneld_send(int msgtype, int ret_size, int msgsz,
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const char *text, const char *ret_val);
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/*
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* Request that a module should be loaded.
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* Wait for the exit status from insmod/modprobe.
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* If it fails, it fails... at least we tried...
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*/
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static inline int request_module(const char *name)
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{
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return kerneld_send(KERNELD_REQUEST_MODULE,
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strlen(name), name, NULL);
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}
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/*
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* Request the removal of a module, maybe don't wait for it.
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* It doesn't matter if the removal fails, now does it?
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*/
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static inline int release_module(const char *name, int waitflag)
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{
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return kerneld_send(KERNELD_RELEASE_MODULE,
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strlen(name), name, NULL);
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}
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/*
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* Request a delayed removal of a module, but don't wait for it.
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* The delay is done by kerneld (default: 60 seconds)
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*/
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static inline int delayed_release_module(const char *name)
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{
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return kerneld_send(KERNELD_DELAYED_RELEASE_MODULE,
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strlen(name), name, NULL);
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}
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/*
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* Attempt to cancel a previous request for removal of a module,
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* but don't wait for it.
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* This call can be made if the kernel wants to prevent a delayed
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* unloading of a module.
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*/
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static inline int cancel_release_module(const char *name)
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{
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return kerneld_send(KERNELD_CANCEL_RELEASE_MODULE,
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strlen(name), name, NULL);
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}
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/*
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* Perform an "inverted" system call, maybe return the exit status
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*/
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static inline int ksystem(const char *cmd, int waitflag)
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{
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return kerneld_send(KERNELD_SYSTEM,
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strlen(cmd), cmd, NULL);
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}
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/*
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* Try to create a route, possibly by opening a ppp-connection
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*/
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static inline int kerneld_route(const char *ip_route)
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{
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return kerneld_send(KERNELD_REQUEST_ROUTE,
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strlen(ip_route), ip_route, NULL);
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}
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/*
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* Handle an external screen blanker
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*/
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static inline int kerneld_blanker(int on_off) /* 0 => "off", else "on" */
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{
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return kerneld_send(KERNELD_BLANKER,
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strlen(on_off?"on":"off"), on_off?"on":"off", NULL);
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}
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#endif /* __KERNEL__ */
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#endif
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