aboutsummaryrefslogtreecommitdiffstats
path: root/package/libs/libtool
Commit message (Expand)AuthorAgeFilesLines
* treewide: revise library packagingJo-Philipp Wich2019-01-241-1/+2
* libtool: Update to 2.4.6Rosen Penev2018-03-312-14/+3
* add PKG_CPE_ID ids to package and toolsAlexander Couzens2017-11-171-0/+1
* libtool: don't clobber host libtool infrastructureJo-Philipp Wich2017-01-221-7/+7
* package: replace $(STAGING_DIR)/host with $(STAGING_DIR_HOSTPKG)Matthias Schiffer2017-01-101-1/+1
* treewide: clean up download hashesFelix Fietkau2016-12-161-1/+1
* package/libs/libtool: Switch to xz tarballDaniel Engberg2016-10-151-2/+2
* Revert "package/libs/libtool: rename to libltdl"Felix Fietkau2016-01-102-0/+63
* package/libs/libtool: rename to libltdlFelix Fietkau2016-01-072-63/+0
* cosmetic: remove trailing whitespacesLuka Perkov2015-10-151-1/+1
* libtool: enable passthrough for SSP optionsSteven Barth2015-06-191-0/+11
* license info - revert r43155John Crispin2014-11-031-2/+2
* Add more license tags with SPDX identifiersJohn Crispin2014-11-031-2/+2
* Add a few SPDX tagsSteven Barth2014-11-021-1/+1
* licensing: Add licensing metadata to many packages Two new variables are intr...Hamish Guthrie2012-10-191-0/+3
* move library packages to package/libs/Felix Fietkau2012-10-081-0/+49
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-13 23:07:22 +0000
25'>225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 
/******************************************************************************
 * domain.c
 * 
 * Generic domain-handling functions.
 */

#include <xen/config.h>
#include <xen/init.h>
#include <xen/lib.h>
#include <xen/sched.h>
#include <xen/errno.h>
#include <xen/sched.h>
#include <xen/mm.h>
#include <xen/event.h>
#include <xen/time.h>
#include <xen/console.h>
#include <xen/softirq.h>
#include <asm/shadow.h>
#include <public/dom0_ops.h>
#include <asm/domain_page.h>
#include <asm/debugger.h>

/* Both these structures are protected by the domlist_lock. */
rwlock_t domlist_lock = RW_LOCK_UNLOCKED;
struct domain *domain_hash[DOMAIN_HASH_SIZE];
struct domain *domain_list;

struct domain *dom0;

struct domain *do_createdomain(domid_t dom_id, unsigned int cpu)
{
    struct domain *d, **pd;
    struct exec_domain *ed;

    if ( (d = alloc_domain_struct()) == NULL )
        return NULL;

    ed = d->exec_domain[0];

    atomic_set(&d->refcnt, 1);
    atomic_set(&ed->pausecnt, 0);

    d->id          = dom_id;
    ed->processor  = cpu;
 
    spin_lock_init(&d->time_lock);

    spin_lock_init(&d->big_lock);

    spin_lock_init(&d->page_alloc_lock);
    INIT_LIST_HEAD(&d->page_list);
    INIT_LIST_HEAD(&d->xenpage_list);

    /* Per-domain PCI-device list. */
    spin_lock_init(&d->pcidev_lock);
    INIT_LIST_HEAD(&d->pcidev_list);
    
    if ( (d->id != IDLE_DOMAIN_ID) &&
         ((init_event_channels(d) != 0) || (grant_table_create(d) != 0)) )
    {
        destroy_event_channels(d);
        free_domain_struct(d);
        return NULL;
    }
    
    arch_do_createdomain(ed);
    
    sched_add_domain(ed);

    if ( d->id != IDLE_DOMAIN_ID )
    {
        write_lock(&domlist_lock);
        pd = &domain_list; /* NB. domain_list maintained in order of dom_id. */
        for ( pd = &domain_list; *pd != NULL; pd = &(*pd)->next_list )
            if ( (*pd)->id > d->id )
                break;
        d->next_list = *pd;
        *pd = d;
        d->next_hash = domain_hash[DOMAIN_HASH(dom_id)];
        domain_hash[DOMAIN_HASH(dom_id)] = d;
        write_unlock(&domlist_lock);
    }

    return d;
}


struct domain *find_domain_by_id(domid_t dom)
{
    struct domain *d;

    read_lock(&domlist_lock);
    d = domain_hash[DOMAIN_HASH(dom)];
    while ( d != NULL )
    {
        if ( d->id == dom )
        {
            if ( unlikely(!get_domain(d)) )
                d = NULL;
            break;
        }
        d = d->next_hash;
    }
    read_unlock(&domlist_lock);

    return d;
}


#ifndef CONFIG_IA64
extern void physdev_destroy_state(struct domain *d);
#else
#define physdev_destroy_state(_d) ((void)0)
#endif

void domain_kill(struct domain *d)
{
    struct exec_domain *ed;

    domain_pause(d);
    if ( !test_and_set_bit(DF_DYING, &d->d_flags) )
    {
        for_each_exec_domain(d, ed)
            sched_rem_domain(ed);
        domain_relinquish_memory(d);
        physdev_destroy_state(d);
        put_domain(d);
    }
}


void domain_crash(void)
{
    struct domain *d = current->domain;

    if ( d->id == 0 )
        BUG();

    set_bit(DF_CRASHED, &d->d_flags);

    send_guest_virq(dom0->exec_domain[0], VIRQ_DOM_EXC);

    raise_softirq(SCHEDULE_SOFTIRQ);
}


void domain_crash_synchronous(void)
{
    domain_crash();
    for ( ; ; )
        do_softirq();
}


void domain_shutdown(u8 reason)
{
    struct domain *d = current->domain;

    if ( d->id == 0 )
    {
        extern void machine_restart(char *);
        extern void machine_halt(void);

        debugger_trap_immediate();

        if ( reason == SHUTDOWN_poweroff ) 
        {
            printk("Domain 0 halted: halting machine.\n");
            machine_halt();
        }
        else
        {
            printk("Domain 0 shutdown: rebooting machine.\n");
            machine_restart(0);
        }
    }

    if ( (d->shutdown_code = reason) == SHUTDOWN_crash )
        set_bit(DF_CRASHED, &d->d_flags);
    else
        set_bit(DF_SHUTDOWN, &d->d_flags);

    send_guest_virq(dom0->exec_domain[0], VIRQ_DOM_EXC);

    raise_softirq(SCHEDULE_SOFTIRQ);
}


unsigned int alloc_new_dom_mem(struct domain *d, unsigned int kbytes)
{
    unsigned int alloc_pfns, nr_pages;
    struct pfn_info *page;

    nr_pages = (kbytes + ((PAGE_SIZE-1)>>10)) >> (PAGE_SHIFT - 10);
    d->max_pages = nr_pages; /* this can now be controlled independently */

    /* Grow the allocation if necessary. */
    for ( alloc_pfns = d->tot_pages; alloc_pfns < nr_pages; alloc_pfns++ )
    {
        if ( unlikely((page = alloc_domheap_page(d)) == NULL) )
        {
            domain_relinquish_memory(d);
            return list_empty(&page_scrub_list) ? -ENOMEM : -EAGAIN;
        }

        /* Initialise the machine-to-phys mapping for this page. */
        set_machinetophys(page_to_pfn(page), alloc_pfns);
    }

    return 0;
}
 

/* Release resources belonging to task @p. */
void domain_destruct(struct domain *d)
{
    struct domain **pd;
    atomic_t      old, new;

    if ( !test_bit(DF_DYING, &d->d_flags) )
        BUG();

    /* May be already destructed, or get_domain() can race us. */
    _atomic_set(old, 0);
    _atomic_set(new, DOMAIN_DESTRUCTED);
    old = atomic_compareandswap(old, new, &d->refcnt);
    if ( _atomic_read(old) != 0 )
        return;

    /* Delete from task list and task hashtable. */
    write_lock(&domlist_lock);
    pd = &domain_list;
    while ( *pd != d ) 
        pd = &(*pd)->next_list;
    *pd = d->next_list;
    pd = &domain_hash[DOMAIN_HASH(d->id)];
    while ( *pd != d ) 
        pd = &(*pd)->next_hash;
    *pd = d->next_hash;
    write_unlock(&domlist_lock);

    destroy_event_channels(d);
    grant_table_destroy(d);

    free_perdomain_pt(d);
    free_xenheap_page((unsigned long)d->shared_info);

    free_domain_struct(d);
}


/*
 * set_info_guest is used for final setup, launching, and state modification 
 * of domains other than domain 0. ie. the domains that are being built by 
 * the userspace dom0 domain builder.
 */
int set_info_guest(struct domain *p, dom0_setdomaininfo_t *setdomaininfo)
{
    int rc = 0;
    full_execution_context_t *c = NULL;
    unsigned long vcpu = setdomaininfo->exec_domain;
    struct exec_domain *ed; 

    if ( (vcpu >= MAX_VIRT_CPUS) || ((ed = p->exec_domain[vcpu]) == NULL) )
        return -EINVAL;
    
    if (test_bit(DF_CONSTRUCTED, &p->d_flags) && 
        !test_bit(EDF_CTRLPAUSE, &ed->ed_flags))
        return -EINVAL;

    if ( (c = xmalloc(full_execution_context_t)) == NULL )
        return -ENOMEM;

    if ( copy_from_user(c, setdomaininfo->ctxt, sizeof(*c)) )
    {
        rc = -EFAULT;
        goto out;
    }
    
    if ( (rc = arch_set_info_guest(ed, c)) != 0 )
        goto out;

    set_bit(DF_CONSTRUCTED, &p->d_flags);

 out:    
    if ( c != NULL )
        xfree(c);
    return rc;
}

/*
 * final_setup_guest is used for final setup and launching of domains other
 * than domain 0. ie. the domains that are being built by the userspace dom0
 * domain builder.
 */
long do_boot_vcpu(unsigned long vcpu, full_execution_context_t *ctxt) 
{
    struct domain *d = current->domain;
    struct exec_domain *ed;
    int rc = 0;
    full_execution_context_t *c;

    if ( (vcpu >= MAX_VIRT_CPUS) || (d->exec_domain[vcpu] != NULL) )
        return -EINVAL;

    if ( alloc_exec_domain_struct(d, vcpu) == NULL )
        return -ENOMEM;

    if ( (c = xmalloc(full_execution_context_t)) == NULL )
    {
        rc = -ENOMEM;
        goto out;
    }

    if ( copy_from_user(c, ctxt, sizeof(*c)) )
    {
        rc = -EFAULT;
        goto out;
    }

    ed = d->exec_domain[vcpu];

    atomic_set(&ed->pausecnt, 0);

    memcpy(&ed->arch, &idle0_exec_domain.arch, sizeof(ed->arch));

    arch_do_boot_vcpu(ed);

    sched_add_domain(ed);

    if ( (rc = arch_set_info_guest(ed, c)) != 0 )
    {
        sched_rem_domain(ed);
        goto out;
    }

    /* domain_unpause_by_systemcontroller */
    if ( test_and_clear_bit(EDF_CTRLPAUSE, &ed->ed_flags) )
        domain_wake(ed);

    xfree(c);
    return 0;

 out:
    if ( c != NULL )
        xfree(c);
    arch_free_exec_domain_struct(d->exec_domain[vcpu]);
    d->exec_domain[vcpu] = NULL;
    return rc;
}

long vm_assist(struct domain *p, unsigned int cmd, unsigned int type)
{
    if ( type > MAX_VMASST_TYPE )
        return -EINVAL;

    switch ( cmd )
    {
    case VMASST_CMD_enable:
        set_bit(type, &p->vm_assist);
        return 0;
    case VMASST_CMD_disable:
        clear_bit(type, &p->vm_assist);
        return 0;
    }

    return -ENOSYS;
}

/*
 * Local variables:
 * mode: C
 * c-set-style: "BSD"
 * c-basic-offset: 4
 * tab-width: 4
 * indent-tabs-mode: nil
 * End:
 */
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-13 23:07:21 +0000