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Pager works until end of init_physmem_secondary

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This commit is contained in:
Bahadir Balban
2009-08-09 17:22:13 +03:00
parent a45b5676ab
commit 02a3f1ac91
33 changed files with 607 additions and 556 deletions
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95
src/api/capability.c
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@@ -8,50 +8,79 @@
*/
#include <l4/api/capability.h>
#include <l4/generic/tcb.h>
#include <l4/generic/physmem.h>
#include <l4/generic/space.h>
#include <l4/generic/capability.h>
#include <l4/generic/container.h>
#include <l4/api/errno.h>
#include INC_API(syscall.h)
/* Error-checked kernel data request call */
int __sys_capability_control(unsigned int req, unsigned int flags, void *userbuf)
int task_read_capabilities(void *userbuf)
{
int err = 0;
#if 0
int copy_size, copy_offset = 0;
struct capability *cap;
int err;
/*
* Currently only pagers can
* read their own capabilities
*/
if (current != current->pager->tcb)
return -EPERM;
/* Determine size of pager capabilities */
copy_size = current->cap_list_ptr->ncaps * sizeof(*cap);
/* Validate user buffer for this copy size */
if ((err = check_access((unsigned long)userbuf, copy_size,
MAP_USR_RW_FLAGS, 1)) < 0)
return err;
/* Copy capabilities from list to buffer */
list_foreach_struct(cap,
&current->cap_list_ptr->caps,
list) {
memcpy(userbuf + copy_offset, cap, sizeof(*cap));
copy_offset += sizeof(*cap);
}
return 0;
}
/*
* Read, manipulate capabilities. Currently only capability read support.
*/
int sys_capability_control(unsigned int req, unsigned int flags, void *userbuf)
{
int err;
switch(req) {
case KDATA_PAGE_MAP:
// printk("Handling KDATA_PAGE_MAP request.\n");
if (check_access(vaddr, sizeof(page_map), MAP_USR_RW_FLAGS, 1) < 0)
return -EINVAL;
memcpy(dest, &page_map, sizeof(page_map));
/* Return number of capabilities the thread has */
case CAP_CONTROL_NCAPS:
if (current != current->pager->tcb)
return -EPERM;
if ((err = check_access((unsigned long)userbuf, sizeof(int),
MAP_USR_RW_FLAGS, 1)) < 0)
return err;
/* Copy ncaps value */
*((int *)userbuf) = current->cap_list_ptr->ncaps;
break;
case KDATA_BOOTDESC:
// printk("Handling KDATA_BOOTDESC request.\n");
if (check_access(vaddr, bootdesc->desc_size, MAP_USR_RW_FLAGS, 1) < 0)
return -EINVAL;
memcpy(dest, bootdesc, bootdesc->desc_size);
break;
case KDATA_BOOTDESC_SIZE:
// printk("Handling KDATA_BOOTDESC_SIZE request.\n");
if (check_access(vaddr, sizeof(unsigned int), MAP_USR_RW_FLAGS, 1) < 0)
return -EINVAL;
*(unsigned int *)dest = bootdesc->desc_size;
/* Return all capabilities as an array of capabilities */
case CAP_CONTROL_READ_CAPS:
err = task_read_capabilities(userbuf);
break;
default:
printk("Unsupported kernel data request.\n");
err = -1;
/* Invalid request id */
return -EINVAL;
}
#endif
return err;
return 0;
}
int sys_capability_control(unsigned int req, unsigned int flags, void *userbuf)
{
return __sys_capability_control(req, flags, userbuf);
}