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https://github.com/drasko/codezero.git
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5bff5b5fbf
Each container was taking up more than 3KB of space at boot-time structures This was due to having 4 pagers and 32 boot-time capabilities for each. This caused the boot-time kernel size to vary a lot with capabilities. The new numbers are optimum. Particularly we always have a single pager per container, even though the array structures allow more. Single pager makes container-wide privileges and management simpler.
115 lines
2.8 KiB
C
115 lines
2.8 KiB
C
/*
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* Definitions for Codezero Containers
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*
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* Copyright (C) 2009 Bahadir Balban
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*/
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#ifndef __CONTAINER_H__
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#define __CONTAINER_H__
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#include <l4/generic/scheduler.h>
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#include <l4/generic/space.h>
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#include <l4/generic/capability.h>
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#include <l4/generic/resource.h>
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#include <l4/generic/tcb.h>
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#include <l4/lib/idpool.h>
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#include <l4/api/mutex.h>
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#include <l4/lib/list.h>
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#include <l4/lib/idpool.h>
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#define curcont (current->container)
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#define CONFIG_CONTAINER_NAMESIZE 64
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#define CONFIG_MAX_CAPS_USED 16
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#define CONFIG_MAX_PAGERS_USED 1
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/* Container macro. No locks needed! */
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struct pager {
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struct ktcb *tcb;
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unsigned long start_lma;
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unsigned long start_vma;
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unsigned long start_address;
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unsigned long stack_address;
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unsigned long memsize;
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struct cap_list cap_list;
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};
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struct container {
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l4id_t cid; /* Unique container id */
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int npagers; /* # of pagers */
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struct link list; /* List ref for containers */
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struct address_space_list space_list; /* List of address spaces */
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char name[CONFIG_CONTAINER_NAMESIZE]; /* Name of container */
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struct ktcb_list ktcb_list; /* List of threads */
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struct link pager_list; /* List of pagers */
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struct id_pool *thread_id_pool; /* Id pools for thread/spaces */
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struct id_pool *space_id_pool;
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struct mutex_queue_head mutex_queue_head; /* Userspace mutex list */
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struct cap_list cap_list; /* Capabilities shared by whole container */
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struct pager *pager; /* Boot-time array of pagers */
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};
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/* Compact, raw capability structure */
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struct cap_info {
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l4id_t target;
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unsigned int type;
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u32 access;
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unsigned long start;
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unsigned long end;
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unsigned long size;
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};
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struct pager_info {
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unsigned long pager_lma;
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unsigned long pager_vma;
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unsigned long pager_size;
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unsigned long start_address;
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unsigned long stack_address;
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/* Number of capabilities defined */
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int ncaps;
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/*
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* Zero or more ipc caps,
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* One or more thread pool caps,
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* One or more space pool caps,
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* One or more exregs caps,
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* One or more tcontrol caps,
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* One or more cputime caps,
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* One or more physmem caps,
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* One or more virtmem caps,
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* Zero or more umutex caps,
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*/
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struct cap_info caps[CONFIG_MAX_CAPS_USED];
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};
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/*
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* This auto-generated structure is
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* used to create run-time containers
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*/
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struct container_info {
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char name[CONFIG_CONTAINER_NAMESIZE];
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int npagers;
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struct pager_info pager[CONFIG_MAX_PAGERS_USED];
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};
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extern struct container_info cinfo[];
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void kres_insert_container(struct container *c,
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struct kernel_resources *kres);
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struct container *container_create(void);
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int container_init_pagers(struct kernel_resources *kres,
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pgd_table_t *current_pgd);
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int init_containers(struct kernel_resources *kres);
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struct container *container_find(struct kernel_resources *kres, l4id_t cid);
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#endif /* __CONTAINER_H__ */
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