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cache_module_info::node_opened() was called with the wrong argument order.

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Added generic syscall to control the cache. Right now, only setting/removing
cache modules is implemented.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10601 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2005-01-07 00:55:08 +00:00
parent 2a5dafa804
commit f3d2f0ffa2
1 changed files with 50 additions and 2 deletions
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52
src/kernel/core/cache/file_cache.cpp vendored
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@ -15,6 +15,7 @@
#include <vm.h>
#include <vm_page.h>
#include <vm_cache.h>
#include <generic_syscall.h>
#include <unistd.h>
#include <stdlib.h>
@ -465,6 +466,51 @@ cache_io(void *_cacheRef, off_t offset, addr_t bufferBase, size_t *_size, bool d
}
static status_t
file_cache_control(const char *subsystem, uint32 function, void *buffer, size_t bufferSize)
{
switch (function) {
case CACHE_CLEAR:
// ToDo: clear the cache
dprintf("cache_control: clear cache!\n");
break;
case CACHE_SET_MODULE:
{
cache_module_info *module = sCacheModule;
// unset previous module
if (sCacheModule != NULL) {
sCacheModule = NULL;
snooze(100000); // 0.1 secs
put_module(module->info.name);
}
// get new module, if any
if (buffer == NULL)
break;
char name[B_FILE_NAME_LENGTH];
if (!IS_USER_ADDRESS(buffer)
|| user_strlcpy(name, (char *)buffer, B_FILE_NAME_LENGTH) < B_OK)
return B_BAD_ADDRESS;
if (strncmp(name, CACHE_MODULES_NAME, strlen(CACHE_MODULES_NAME)))
return B_BAD_VALUE;
dprintf("cache_control: set module %s!\n", name);
if (get_module(name, (module_info **)&module) == B_OK)
sCacheModule = module;
break;
}
}
return B_OK;
}
// #pragma mark -
// kernel public API
@ -549,7 +595,7 @@ cache_node_opened(vm_cache_ref *cache, mount_id mountID, vnode_id vnodeID)
file_cache_ref *ref = (file_cache_ref *)((vnode_store *)cache->cache->store)->file_cache_ref;
if (ref != NULL && sCacheModule != NULL)
sCacheModule->node_opened(ref->cache->cache->virtual_size, mountID, vnodeID);
sCacheModule->node_opened(mountID, vnodeID, ref->cache->cache->virtual_size);
}
@ -569,7 +615,9 @@ cache_node_closed(vm_cache_ref *cache, mount_id mountID, vnode_id vnodeID)
extern "C" status_t
file_cache_init(void)
{
// ToDo: get cache module
// ToDo: get cache module out of driver settings
register_generic_syscall(CACHE_SYSCALLS, file_cache_control, 1, 0);
return B_OK;
}