mirror of
https://github.com/drasko/codezero.git
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6093214981
Pagers can now share their own private capabilities with their paged children, or their siblings with whom they have a common pager ancestor. Added flags CAP_SHARE_CHILD and CAP_SHARE_SIBLINGS for that.
343 lines
7.9 KiB
C
343 lines
7.9 KiB
C
/*
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* Main function for this container
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*/
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#include <l4lib/arch/syslib.h>
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#include <l4lib/arch/syscalls.h>
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#include <l4lib/exregs.h>
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#include <l4lib/init.h>
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#include <l4/api/capability.h>
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#include <l4/generic/capability.h>
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#include <l4/generic/cap-types.h>
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#include <l4/api/thread.h>
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#include <l4/api/space.h>
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#include <l4/api/errno.h>
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#include <container.h>
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static struct capability cap_array[30];
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static int total_caps;
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void print_capability(struct capability *cap)
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{
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printf("Capability id:\t\t\t%d\n", cap->capid);
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printf("Capability resource id:\t\t%d\n", cap->resid);
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printf("Capability owner id:\t\t%d\n",cap->owner);
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switch (cap_type(cap)) {
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case CAP_TYPE_TCTRL:
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printf("Capability type:\t\t%s\n", "Thread Control");
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break;
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case CAP_TYPE_EXREGS:
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printf("Capability type:\t\t%s\n", "Exchange Registers");
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break;
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case CAP_TYPE_MAP:
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printf("Capability type:\t\t%s\n", "Map");
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break;
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case CAP_TYPE_IPC:
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printf("Capability type:\t\t%s\n", "Ipc");
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break;
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case CAP_TYPE_UMUTEX:
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printf("Capability type:\t\t%s\n", "Mutex");
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break;
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case CAP_TYPE_QUANTITY:
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printf("Capability type:\t\t%s\n", "Quantitative");
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break;
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default:
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printf("Capability type:\t\t%s\n", "Unknown");
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break;
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}
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switch (cap_rtype(cap)) {
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case CAP_RTYPE_THREAD:
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printf("Capability resource type:\t%s\n", "Thread");
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break;
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case CAP_RTYPE_TGROUP:
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printf("Capability resource type:\t%s\n", "Thread Group");
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break;
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case CAP_RTYPE_SPACE:
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printf("Capability resource type:\t%s\n", "Space");
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break;
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case CAP_RTYPE_CONTAINER:
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printf("Capability resource type:\t%s\n", "Container");
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break;
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case CAP_RTYPE_UMUTEX:
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printf("Capability resource type:\t%s\n", "Mutex");
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break;
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case CAP_RTYPE_VIRTMEM:
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printf("Capability resource type:\t%s\n", "Virtual Memory");
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break;
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case CAP_RTYPE_PHYSMEM:
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printf("Capability resource type:\t%s\n", "Physical Memory");
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break;
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case CAP_RTYPE_THREADPOOL:
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printf("Capability resource type:\t%s\n", "Thread Pool");
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break;
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case CAP_RTYPE_SPACEPOOL:
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printf("Capability resource type:\t%s\n", "Space Pool");
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break;
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case CAP_RTYPE_MUTEXPOOL:
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printf("Capability resource type:\t%s\n", "Mutex Pool");
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break;
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case CAP_RTYPE_MAPPOOL:
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printf("Capability resource type:\t%s\n", "Map Pool (PMDS)");
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break;
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case CAP_RTYPE_CPUPOOL:
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printf("Capability resource type:\t%s\n", "Cpu Pool");
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break;
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case CAP_RTYPE_CAPPOOL:
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printf("Capability resource type:\t%s\n", "Capability Pool");
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break;
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default:
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printf("Capability resource type:\t%s\n", "Unknown");
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break;
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}
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printf("\n");
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}
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/* For same space */
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#define STACK_SIZE 0x1000
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#define THREADS_TOTAL 10
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char stack[THREADS_TOTAL][STACK_SIZE] ALIGN(8);
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char *__stack_ptr = &stack[1][0];
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char utcb[THREADS_TOTAL][UTCB_SIZE] ALIGN(8);
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char *__utcb_ptr = &utcb[1][0];
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extern void setup_new_thread(void);
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int thread_create(int (*func)(void *), void *args, unsigned int flags,
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struct task_ids *new_ids)
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{
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struct task_ids ids;
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struct exregs_data exregs;
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int err;
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l4_getid(&ids);
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/* Shared space only */
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if (!(TC_SHARE_SPACE & flags)) {
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printf("%s: This function allows only "
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"shared space thread creation.\n",
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__FUNCTION__);
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return -EINVAL;
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}
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/* Create thread */
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if ((err = l4_thread_control(THREAD_CREATE | flags, &ids)) < 0)
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return err;
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/* Check if more stack/utcb available */
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if ((unsigned long)__utcb_ptr ==
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(unsigned long)&utcb[THREADS_TOTAL][0])
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return -ENOMEM;
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if ((unsigned long)__stack_ptr ==
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(unsigned long)&stack[THREADS_TOTAL][0])
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return -ENOMEM;
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/* First word of new stack is arg */
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((unsigned long *)__stack_ptr)[-1] = (unsigned long)args;
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/* Second word of new stack is function address */
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((unsigned long *)__stack_ptr)[-2] = (unsigned long)func;
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/* Setup new thread pc, sp, utcb */
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memset(&exregs, 0, sizeof(exregs));
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exregs_set_stack(&exregs, (unsigned long)__stack_ptr);
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exregs_set_utcb(&exregs, (unsigned long)__utcb_ptr);
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exregs_set_pc(&exregs, (unsigned long)setup_new_thread);
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if ((err = l4_exchange_registers(&exregs, ids.tid)) < 0)
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return err;
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/* Update utcb, stack pointers */
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__stack_ptr += STACK_SIZE;
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__utcb_ptr += UTCB_SIZE;
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/* Start the new thread */
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if ((err = l4_thread_control(THREAD_RUN, &ids)) < 0)
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return err;
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memcpy(new_ids, &ids, sizeof(ids));
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return 0;
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}
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int read_pager_capabilities()
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{
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int ncaps;
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int err;
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/* Read number of capabilities */
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if ((err = l4_capability_control(CAP_CONTROL_NCAPS,
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0, &ncaps)) < 0) {
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printf("l4_capability_control() reading # of"
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" capabilities failed.\n Could not "
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"complete CAP_CONTROL_NCAPS request.\n");
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BUG();
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}
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total_caps = ncaps;
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/* Read all capabilities */
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if ((err = l4_capability_control(CAP_CONTROL_READ,
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0, cap_array)) < 0) {
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printf("l4_capability resource_control() reading of "
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"capabilities failed.\n Could not "
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"complete CAP_CONTROL_READ_CAPS request.\n");
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BUG();
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}
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for (int i = 0; i < total_caps; i++)
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print_capability(&cap_array[i]);
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return 0;
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}
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int result = 1;
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int simple_pager_thread(void *arg)
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{
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int err;
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int res = *(int *)arg;
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struct task_ids ids;
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int testres;
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l4_getid(&ids);
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//printf("Thread spawned from pager, "
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// "trying to create new thread.\n");
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err = l4_thread_control(THREAD_CREATE |
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TC_SHARE_SPACE |
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TC_AS_PAGER, &ids);
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if (res == 0)
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if (err == -ENOCAP ||
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err == -ENOMEM) {
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//printf("Creation failed with %d "
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// "as expected.\n", err);
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testres = 0;
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} else {
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printf("Creation was supposed to fail "
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"with %d or %d, but err = %d\n",
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-ENOMEM, -ENOCAP, err);
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testres = -1;
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}
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else
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if (err == 0) {
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// printf("Creation succeeded as expected.\n");
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testres = 0;
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} else {
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printf("Creation was supposed to succeed, "
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"but err = %d\n", err);
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testres = -1;
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}
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/* Destroy thread we created */
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if (err == 0 &&
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res == 0)
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l4_thread_control(THREAD_DESTROY, &ids);
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result = testres;
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/* Destroy self */
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l4_getid(&ids);
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l4_thread_control(THREAD_DESTROY, &ids);
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return 0;
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}
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int wait_check_test(void)
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{
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/* Wait for thread to finish */
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while (result > 0)
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;
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//l4_thread_switch(0);
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if (result != 0) {
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printf("Top-level test has failed\n");
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return -1;
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}
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result = 1;
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return 0;
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}
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int main(void)
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{
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int err;
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struct task_ids ids;
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int TEST_MUST_FAIL = 0;
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int TEST_MUST_SUCCEED = 1;
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printf("%s: Container %s started\n",
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__CONTAINER__, __CONTAINER_NAME__);
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/* Read pager capabilities */
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read_pager_capabilities();
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/*
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* Create new thread that will attempt
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* a pager privileged operation
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*/
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if ((err = thread_create(simple_pager_thread,
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&TEST_MUST_FAIL,
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TC_SHARE_SPACE |
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TC_AS_PAGER, &ids)) < 0) {
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printf("Top-level simple_pager creation failed.\n");
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goto out_err;
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}
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/* Wait for test to finish and check result */
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if (wait_check_test() < 0)
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goto out_err;
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#if 0
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/* Destroy test thread */
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if ((err = l4_thread_control(THREAD_DESTROY, &ids)) < 0) {
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printf("Destruction of top-level simple_pager failed.\n");
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BUG();
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}
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#endif
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/*
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* Share operations with the same thread
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* group
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*/
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if ((err = l4_capability_control(CAP_CONTROL_SHARE,
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CAP_SHARE_GROUP, 0)) < 0) {
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printf("Sharing capability with thread group failed.\n");
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goto out_err;
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}
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/*
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* Create new thread that will attempt a pager privileged
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* operation. This should succeed as we shared caps with
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* the thread group.
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*/
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if ((err = thread_create(simple_pager_thread,
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&TEST_MUST_SUCCEED,
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TC_SHARE_SPACE |
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TC_SHARE_GROUP, &ids)) < 0) {
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printf("Top-level simple_pager creation failed.\n");
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goto out_err;
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}
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/* Wait for test to finish and check result */
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if (wait_check_test() < 0)
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goto out_err;
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#if 0
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/* Destroy test thread */
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if ((err = l4_thread_control(THREAD_DESTROY, &ids)) < 0) {
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printf("Destruction of top-level simple_pager failed.\n");
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BUG();
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}
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#endif
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printf("Capability Sharing Test -- PASSED --\n");
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return 0;
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out_err:
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printf("Capability Sharing Test -- FAILED --\n");
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return 0;
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}
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