/*===========================================================================*
* image_dmp *
*===========================================================================*/
PUBLIC void image_dmp()
{
int m, i,j,r;
struct boot_image *ip;
static char ipc_to[BITCHUNK_BITS*2];
if ((r = sys_getimage(image)) != OK) {
report("IS","warning: couldn't get copy of image table", r);
return;
}
printf("Image table dump showing all processes included in system image.\n");
printf("---name-- -nr- -flags- -traps- -sq- ----pc- -stack- -ipc_to[0]--------\n");
for (m=0; m<NR_BOOT_PROCS; m++) {
ip = &image[m];
for (i=j=0; i < BITCHUNK_BITS; i++, j++) {
ipc_to[j] = (ip->ipc_to & (1<<i)) ? '1' : '0';
if (i % 8 == 7) ipc_to[++j] = ' ';
}
ipc_to[j] = '\0';
printf("%8s %4d %s %s %3d %7lu %7lu %s\n",
ip->proc_name, ip->proc_nr,
s_flags_str(ip->flags), s_traps_str(ip->trap_mask),
ip->priority, (long)ip->initial_pc, ip->stksize, ipc_to);
}
printf("\n");
}
/*===========================================================================*
* init_server *
*===========================================================================*/
PRIVATE void init_server(void)
{
/* Initialize the reincarnation server. */
struct sigaction sa;
struct boot_image *ip;
int s,t;
/* Install signal handlers. Ask PM to transform signal into message. */
sa.sa_handler = SIG_MESS;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
if (sigaction(SIGCHLD,&sa,NULL)<0) panic("RS","sigaction failed", errno);
if (sigaction(SIGTERM,&sa,NULL)<0) panic("RS","sigaction failed", errno);
/* Initialize the system process table. Use the boot image from the kernel
* and the device map from the FS to gather all needed information.
*/
if ((s = sys_getimage(image)) != OK)
panic("RS","warning: couldn't get copy of image table", s);
if ((s = getsysinfo(FS_PROC_NR, SI_DMAP_TAB, dmap)) < 0)
panic("RS","warning: couldn't get copy of dmap table", errno);
/* Now initialize the table with the processes in the system image.
* Prepend /sbin/ to the binaries so that we can actually find them.
*/
for (s=0; s< NR_BOOT_PROCS; s++) {
ip = &image[s];
if (ip->proc_nr >= 0) {
nr_in_use ++;
rproc[s].r_flags = RS_IN_USE;
rproc[s].r_proc_nr_e = ip->endpoint;
rproc[s].r_pid = getnpid(ip->proc_nr);
for(t=0; t< NR_DEVICES; t++)
if (dmap[t].dmap_driver == ip->proc_nr)
rproc[s].r_dev_nr = t;
strcpy(rproc[s].r_cmd, "/sbin/");
strcpy(rproc[s].r_cmd+6, ip->proc_name);
rproc[s].r_argc = 1;
rproc[s].r_argv[0] = rproc[s].r_cmd;
rproc[s].r_argv[1] = NULL;
}
}
/* Set alarm to periodically check driver status. */
if (OK != (s=sys_setalarm(RS_DELTA_T, 0)))
panic("RS", "couldn't set alarm", s);
}
/*===========================================================================*
* image_dmp *
*===========================================================================*/
void image_dmp()
{
int m, r;
struct boot_image *ip;
if ((r = sys_getimage(image)) != OK) {
printf("IS: warning: couldn't get copy of image table: %d\n", r);
return;
}
printf("Image table dump showing all processes included in system image.\n");
printf("---name- -nr- flags -stack-\n");
for (m=0; m<NR_BOOT_PROCS; m++) {
ip = &image[m];
printf("%8s %4d\n", ip->proc_name, ip->proc_nr);
}
printf("\n");
}
/*===========================================================================*
* image_dmp *
*===========================================================================*/
void image_dmp()
{
int m, r;
struct boot_image *ip;
if ((r = sys_getimage(image)) != 0) {
report("IS","warning: couldn't get copy of image table", r);
return;
}
printk("Image table dump showing all processes included in system image.\n");
printk("---name- -nr- ----pc- flags -qs- -queue- -stack-\n");
for (m=0; m<NR_BOOT_PROCS; m++) {
ip = &image[m];
printk("%8s %4d %7lu %5s %4d %7d %7lu\n",
ip->proc_name, ip->proc_nr, (long)ip->initial_pc,
boot_flags_str(ip->flags), ip->quantum, ip->priority, ip->stksize);
}
printk("\n");
}
/*===========================================================================*
* sef_cb_init_fresh *
*===========================================================================*/
PRIVATE int sef_cb_init_fresh(int type, sef_init_info_t *info)
{
/* Initialize the reincarnation server. */
struct boot_image *ip;
int s,i;
int nr_image_srvs, nr_image_priv_srvs, nr_uncaught_init_srvs;
struct rproc *rp;
struct rproc *replica_rp;
struct rprocpub *rpub;
struct boot_image image[NR_BOOT_PROCS];
struct boot_image_priv *boot_image_priv;
struct boot_image_sys *boot_image_sys;
struct boot_image_dev *boot_image_dev;
int pid, replica_pid;
endpoint_t replica_endpoint;
int ipc_to;
int *calls;
int all_c[] = { ALL_C, NULL_C };
int no_c[] = { NULL_C };
/* See if we run in verbose mode. */
env_parse("rs_verbose", "d", 0, &rs_verbose, 0, 1);
if ((s = sys_getinfo(GET_HZ, &system_hz, sizeof(system_hz), 0, 0)) != OK)
panic("Cannot get system timer frequency\n");
/* Initialize the global init descriptor. */
rinit.rproctab_gid = cpf_grant_direct(ANY, (vir_bytes) rprocpub,
sizeof(rprocpub), CPF_READ);
if(!GRANT_VALID(rinit.rproctab_gid)) {
panic("unable to create rprocpub table grant: %d", rinit.rproctab_gid);
}
/* Initialize some global variables. */
rupdate.flags = 0;
shutting_down = FALSE;
/* Get a copy of the boot image table. */
if ((s = sys_getimage(image)) != OK) {
panic("unable to get copy of boot image table: %d", s);
}
/* Determine the number of system services in the boot image table. */
nr_image_srvs = 0;
for(i=0;i<NR_BOOT_PROCS;i++) {
ip = &image[i];
/* System services only. */
if(iskerneln(_ENDPOINT_P(ip->endpoint))) {
continue;
}
nr_image_srvs++;
}
/* Determine the number of entries in the boot image priv table and make sure
* it matches the number of system services in the boot image table.
*/
nr_image_priv_srvs = 0;
for (i=0; boot_image_priv_table[i].endpoint != NULL_BOOT_NR; i++) {
boot_image_priv = &boot_image_priv_table[i];
/* System services only. */
if(iskerneln(_ENDPOINT_P(boot_image_priv->endpoint))) {
continue;
}
nr_image_priv_srvs++;
}
if(nr_image_srvs != nr_image_priv_srvs) {
panic("boot image table and boot image priv table mismatch");
}
/* Reset the system process table. */
for (rp=BEG_RPROC_ADDR; rp<END_RPROC_ADDR; rp++) {
rp->r_flags = 0;
rp->r_pub = &rprocpub[rp - rproc];
rp->r_pub->in_use = FALSE;
}
/* Initialize the system process table in 4 steps, each of them following
* the appearance of system services in the boot image priv table.
* - Step 1: set priviliges, sys properties, and dev properties (if any)
* for every system service.
*/
for (i=0; boot_image_priv_table[i].endpoint != NULL_BOOT_NR; i++) {
boot_image_priv = &boot_image_priv_table[i];
/* System services only. */
if(iskerneln(_ENDPOINT_P(boot_image_priv->endpoint))) {
continue;
}
/* Lookup the corresponding entries in other tables. */
boot_image_info_lookup(boot_image_priv->endpoint, image,
&ip, NULL, &boot_image_sys, &boot_image_dev);
rp = &rproc[boot_image_priv - boot_image_priv_table];
rpub = rp->r_pub;
/*
* Set privileges.
*/
/* Get label. */
strcpy(rpub->label, boot_image_priv->label);
/* Force a static priv id for system services in the boot image. */
rp->r_priv.s_id = static_priv_id(
_ENDPOINT_P(boot_image_priv->endpoint));
/* Initialize privilege bitmaps and signal manager. */
rp->r_priv.s_flags = boot_image_priv->flags; /* priv flags */
rp->r_priv.s_trap_mask= SRV_OR_USR(rp, SRV_T, USR_T); /* traps */
ipc_to = SRV_OR_USR(rp, SRV_M, USR_M); /* targets */
fill_send_mask(&rp->r_priv.s_ipc_to, ipc_to == ALL_M);
rp->r_priv.s_sig_mgr= SRV_OR_USR(rp, SRV_SM, USR_SM); /* sig mgr */
rp->r_priv.s_bak_sig_mgr = NONE; /* backup sig mgr */
/* Initialize kernel call mask bitmap. */
calls = SRV_OR_USR(rp, SRV_KC, USR_KC) == ALL_C ? all_c : no_c;
fill_call_mask(calls, NR_SYS_CALLS,
rp->r_priv.s_k_call_mask, KERNEL_CALL, TRUE);
/* Set the privilege structure. */
if(boot_image_priv->endpoint != RS_PROC_NR) {
if ((s = sys_privctl(ip->endpoint, SYS_PRIV_SET_SYS, &(rp->r_priv)))
!= OK) {
panic("unable to set privilege structure: %d", s);
}
}
/* Synch the privilege structure with the kernel. */
if ((s = sys_getpriv(&(rp->r_priv), ip->endpoint)) != OK) {
panic("unable to synch privilege structure: %d", s);
}
/*
* Set sys properties.
*/
rpub->sys_flags = boot_image_sys->flags; /* sys flags */
/*
* Set dev properties.
*/
rpub->dev_flags = boot_image_dev->flags; /* device flags */
rpub->dev_nr = boot_image_dev->dev_nr; /* major device number */
rpub->dev_style = boot_image_dev->dev_style; /* device style */
rpub->dev_style2 = boot_image_dev->dev_style2; /* device style 2 */
/* Get process name. */
strcpy(rpub->proc_name, ip->proc_name);
/* Build command settings. */
rp->r_cmd[0]= '\0';
rp->r_script[0]= '\0';
build_cmd_dep(rp);
/* Initialize vm call mask bitmap. */
calls = SRV_OR_USR(rp, SRV_VC, USR_VC) == ALL_C ? all_c : no_c;
fill_call_mask(calls, NR_VM_CALLS, rpub->vm_call_mask, VM_RQ_BASE, TRUE);
/* Scheduling parameters. */
rp->r_scheduler = SRV_OR_USR(rp, SRV_SCH, USR_SCH);
rp->r_priority = SRV_OR_USR(rp, SRV_Q, USR_Q);
rp->r_quantum = SRV_OR_USR(rp, SRV_QT, USR_QT);
/* Get some settings from the boot image table. */
rpub->endpoint = ip->endpoint;
/* Set some defaults. */
rp->r_old_rp = NULL; /* no old version yet */
rp->r_new_rp = NULL; /* no new version yet */
rp->r_prev_rp = NULL; /* no prev replica yet */
rp->r_next_rp = NULL; /* no next replica yet */
rp->r_uid = 0; /* root */
rp->r_check_tm = 0; /* not checked yet */
getuptime(&rp->r_alive_tm); /* currently alive */
rp->r_stop_tm = 0; /* not exiting yet */
rp->r_restarts = 0; /* no restarts so far */
rp->r_period = 0; /* no period yet */
rp->r_exec = NULL; /* no in-memory copy yet */
rp->r_exec_len = 0;
/* Mark as in use and active. */
rp->r_flags = RS_IN_USE | RS_ACTIVE;
rproc_ptr[_ENDPOINT_P(rpub->endpoint)]= rp;
rpub->in_use = TRUE;
}
/* - Step 2: allow every system service in the boot image to run. */
nr_uncaught_init_srvs = 0;
for (i=0; boot_image_priv_table[i].endpoint != NULL_BOOT_NR; i++) {
boot_image_priv = &boot_image_priv_table[i];
/* System services only. */
if(iskerneln(_ENDPOINT_P(boot_image_priv->endpoint))) {
continue;
}
/* Lookup the corresponding slot in the system process table. */
rp = &rproc[boot_image_priv - boot_image_priv_table];
rpub = rp->r_pub;
/* RS is already running as we speak. */
if(boot_image_priv->endpoint == RS_PROC_NR) {
if ((s = init_service(rp, SEF_INIT_FRESH)) != OK) {
panic("unable to initialize RS: %d", s);
}
continue;
}
/* Allow the service to run. */
if ((s = sched_init_proc(rp)) != OK) {
panic("unable to initialize scheduling: %d", s);
}
if ((s = sys_privctl(rpub->endpoint, SYS_PRIV_ALLOW, NULL)) != OK) {
panic("unable to initialize privileges: %d", s);
}
/* Initialize service. We assume every service will always get
* back to us here at boot time.
*/
if(boot_image_priv->flags & SYS_PROC) {
if ((s = init_service(rp, SEF_INIT_FRESH)) != OK) {
panic("unable to initialize service: %d", s);
}
if(rpub->sys_flags & SF_SYNCH_BOOT) {
/* Catch init ready message now to synchronize. */
catch_boot_init_ready(rpub->endpoint);
}
else {
/* Catch init ready message later. */
nr_uncaught_init_srvs++;
}
}
}
/* - Step 3: let every system service complete initialization by
* catching all the init ready messages left.
*/
while(nr_uncaught_init_srvs) {
catch_boot_init_ready(ANY);
nr_uncaught_init_srvs--;
}
/* - Step 4: all the system services in the boot image are now running.
* Complete the initialization of the system process table in collaboration
* with other system services.
*/
for (i=0; boot_image_priv_table[i].endpoint != NULL_BOOT_NR; i++) {
boot_image_priv = &boot_image_priv_table[i];
/* System services only. */
if(iskerneln(_ENDPOINT_P(boot_image_priv->endpoint))) {
continue;
}
/* Lookup the corresponding slot in the system process table. */
rp = &rproc[boot_image_priv - boot_image_priv_table];
rpub = rp->r_pub;
/* Get pid from PM. */
rp->r_pid = getnpid(rpub->endpoint);
if(rp->r_pid == -1) {
panic("unable to get pid");
}
}
/* Set alarm to periodically check service status. */
if (OK != (s=sys_setalarm(RS_DELTA_T, 0)))
panic("couldn't set alarm: %d", s);
/* Now create a new RS instance with a private page table and let the current
* instance live update into the replica. Clone RS' own slot first.
*/
rp = rproc_ptr[_ENDPOINT_P(RS_PROC_NR)];
if((s = clone_slot(rp, &replica_rp)) != OK) {
panic("unable to clone current RS instance: %d", s);
}
/* Fork a new RS instance. */
pid = srv_fork();
if(pid == -1) {
panic("unable to fork a new RS instance");
}
replica_pid = pid ? pid : getpid();
replica_endpoint = getnprocnr(replica_pid);
replica_rp->r_pid = replica_pid;
replica_rp->r_pub->endpoint = replica_endpoint;
if(pid == 0) {
/* New RS instance running. */
/* Live update the old instance into the new one. */
s = update_service(&rp, &replica_rp, RS_SWAP);
if(s != OK) {
panic("unable to live update RS: %d", s);
}
cpf_reload();
/* Clean up the old RS instance, the new instance will take over. */
cleanup_service(rp);
/* Map out our own text and data. */
unmap_ok = 1;
_minix_unmapzero();
/* Ask VM to pin memory for the new RS instance. */
if((s = vm_memctl(RS_PROC_NR, VM_RS_MEM_PIN)) != OK) {
panic("unable to pin memory for the new RS instance: %d", s);
}
}
else {
/* Old RS instance running. */
/* Set up privileges for the new instance and let it run. */
s = sys_privctl(replica_endpoint, SYS_PRIV_SET_SYS, &(replica_rp->r_priv));
if(s != OK) {
panic("unable to set privileges for the new RS instance: %d", s);
}
if ((s = sched_init_proc(replica_rp)) != OK) {
panic("unable to initialize RS replica scheduling: %d", s);
}
s = sys_privctl(replica_endpoint, SYS_PRIV_YIELD, NULL);
if(s != OK) {
panic("unable to yield control to the new RS instance: %d", s);
}
NOT_REACHABLE;
}
return(OK);
}
/*===========================================================================*
* sef_cb_init_fresh *
*===========================================================================*/
static int sef_cb_init_fresh(int UNUSED(type), sef_init_info_t *UNUSED(info))
{
/* Initialize the process manager.
* Memory use info is collected from the boot monitor, the kernel, and
* all processes compiled into the system image. Initially this information
* is put into an array mem_chunks. Elements of mem_chunks are struct memory,
* and hold base, size pairs in units of clicks. This array is small, there
* should be no more than 8 chunks. After the array of chunks has been built
* the contents are used to initialize the hole list. Space for the hole list
* is reserved as an array with twice as many elements as the maximum number
* of processes allowed. It is managed as a linked list, and elements of the
* array are struct hole, which, in addition to storage for a base and size in
* click units also contain space for a link, a pointer to another element.
*/
int s;
static struct boot_image image[NR_BOOT_PROCS];
register struct boot_image *ip;
static char core_sigs[] = { SIGQUIT, SIGILL, SIGTRAP, SIGABRT,
SIGEMT, SIGFPE, SIGBUS, SIGSEGV };
static char ign_sigs[] = { SIGCHLD, SIGWINCH, SIGCONT };
static char noign_sigs[] = { SIGILL, SIGTRAP, SIGEMT, SIGFPE,
SIGBUS, SIGSEGV };
register struct mproc *rmp;
register char *sig_ptr;
message mess;
/* Initialize process table, including timers. */
for (rmp=&mproc[0]; rmp<&mproc[NR_PROCS]; rmp++) {
init_timer(&rmp->mp_timer);
rmp->mp_magic = MP_MAGIC;
}
/* Build the set of signals which cause core dumps, and the set of signals
* that are by default ignored.
*/
sigemptyset(&core_sset);
for (sig_ptr = core_sigs; sig_ptr < core_sigs+sizeof(core_sigs); sig_ptr++)
sigaddset(&core_sset, *sig_ptr);
sigemptyset(&ign_sset);
for (sig_ptr = ign_sigs; sig_ptr < ign_sigs+sizeof(ign_sigs); sig_ptr++)
sigaddset(&ign_sset, *sig_ptr);
sigemptyset(&noign_sset);
for (sig_ptr = noign_sigs; sig_ptr < noign_sigs+sizeof(noign_sigs); sig_ptr++)
sigaddset(&noign_sset, *sig_ptr);
/* Obtain a copy of the boot monitor parameters and the kernel info struct.
* Parse the list of free memory chunks. This list is what the boot monitor
* reported, but it must be corrected for the kernel and system processes.
*/
if ((s=sys_getmonparams(monitor_params, sizeof(monitor_params))) != OK)
panic("get monitor params failed: %d", s);
if ((s=sys_getkinfo(&kinfo)) != OK)
panic("get kernel info failed: %d", s);
/* Initialize PM's process table. Request a copy of the system image table
* that is defined at the kernel level to see which slots to fill in.
*/
if (OK != (s=sys_getimage(image)))
panic("couldn't get image table: %d", s);
procs_in_use = 0; /* start populating table */
for (ip = &image[0]; ip < &image[NR_BOOT_PROCS]; ip++) {
if (ip->proc_nr >= 0) { /* task have negative nrs */
procs_in_use += 1; /* found user process */
/* Set process details found in the image table. */
rmp = &mproc[ip->proc_nr];
strlcpy(rmp->mp_name, ip->proc_name, PROC_NAME_LEN);
(void) sigemptyset(&rmp->mp_ignore);
(void) sigemptyset(&rmp->mp_sigmask);
(void) sigemptyset(&rmp->mp_catch);
if (ip->proc_nr == INIT_PROC_NR) { /* user process */
/* INIT is root, we make it father of itself. This is
* not really OK, INIT should have no father, i.e.
* a father with pid NO_PID. But PM currently assumes
* that mp_parent always points to a valid slot number.
*/
rmp->mp_parent = INIT_PROC_NR;
rmp->mp_procgrp = rmp->mp_pid = INIT_PID;
rmp->mp_flags |= IN_USE;
/* Set scheduling info */
rmp->mp_scheduler = KERNEL;
rmp->mp_nice = get_nice_value(USR_Q);
}
else { /* system process */
if(ip->proc_nr == RS_PROC_NR) {
rmp->mp_parent = INIT_PROC_NR;
}
else {
rmp->mp_parent = RS_PROC_NR;
}
rmp->mp_pid = get_free_pid();
rmp->mp_flags |= IN_USE | PRIV_PROC;
/* RS schedules this process */
rmp->mp_scheduler = NONE;
rmp->mp_nice = get_nice_value(SRV_Q);
}
/* Get kernel endpoint identifier. */
rmp->mp_endpoint = ip->endpoint;
/* Tell VFS about this system process. */
mess.m_type = PM_INIT;
mess.PM_SLOT = ip->proc_nr;
mess.PM_PID = rmp->mp_pid;
mess.PM_PROC = rmp->mp_endpoint;
if (OK != (s=send(VFS_PROC_NR, &mess)))
panic("can't sync up with VFS: %d", s);
}
}
/* Tell VFS that no more system processes follow and synchronize. */
mess.PR_ENDPT = NONE;
if (sendrec(VFS_PROC_NR, &mess) != OK || mess.m_type != OK)
panic("can't sync up with VFS");
#if defined(__i386__)
uts_val.machine[0] = 'i';
strcpy(uts_val.machine + 1, itoa(getprocessor()));
#elif defined(__arm__)
strcpy(uts_val.machine, "arm");
#endif
system_hz = sys_hz();
/* Initialize user-space scheduling. */
sched_init();
return(OK);
}
/*===========================================================================*
* sef_cb_init_fresh *
*===========================================================================*/
PRIVATE int sef_cb_init_fresh(int type, sef_init_info_t *info)
{
/* Initialize the vm server. */
int s, i;
int click, clicksforgotten = 0;
struct memory mem_chunks[NR_MEMS];
struct boot_image image[NR_BOOT_PROCS];
struct boot_image *ip;
struct rprocpub rprocpub[NR_BOOT_PROCS];
phys_bytes limit = 0;
#if SANITYCHECKS
incheck = nocheck = 0;
FIXME("VM SANITYCHECKS are on");
#endif
vm_paged = 1;
env_parse("vm_paged", "d", 0, &vm_paged, 0, 1);
#if SANITYCHECKS
env_parse("vm_sanitychecklevel", "d", 0, &vm_sanitychecklevel, 0, SCL_MAX);
#endif
/* Get chunks of available memory. */
get_mem_chunks(mem_chunks);
/* Initialize VM's process table. Request a copy of the system
* image table that is defined at the kernel level to see which
* slots to fill in.
*/
if (OK != (s=sys_getimage(image)))
vm_panic("couldn't get image table: %d\n", s);
/* Set table to 0. This invalidates all slots (clear VMF_INUSE). */
memset(vmproc, 0, sizeof(vmproc));
for(i = 0; i < ELEMENTS(vmproc); i++) {
vmproc[i].vm_slot = i;
}
/* Walk through boot-time system processes that are alive
* now and make valid slot entries for them.
*/
for (ip = &image[0]; ip < &image[NR_BOOT_PROCS]; ip++) {
phys_bytes proclimit;
struct vmproc *vmp;
if(ip->proc_nr >= _NR_PROCS) { vm_panic("proc", ip->proc_nr); }
if(ip->proc_nr < 0 && ip->proc_nr != SYSTEM) continue;
#define GETVMP(v, nr) \
if(nr >= 0) { \
vmp = &vmproc[ip->proc_nr]; \
} else if(nr == SYSTEM) { \
vmp = &vmproc[VMP_SYSTEM]; \
} else { \
vm_panic("init: crazy proc_nr", nr); \
}
/* Initialize normal process table slot or special SYSTEM
* table slot. Kernel memory is already reserved.
*/
GETVMP(vmp, ip->proc_nr);
/* reset fields as if exited */
clear_proc(vmp);
/* Get memory map for this process from the kernel. */
if ((s=get_mem_map(ip->proc_nr, vmp->vm_arch.vm_seg)) != OK)
vm_panic("couldn't get process mem_map",s);
/* Remove this memory from the free list. */
reserve_proc_mem(mem_chunks, vmp->vm_arch.vm_seg);
/* Set memory limit. */
proclimit = CLICK2ABS(vmp->vm_arch.vm_seg[S].mem_phys +
vmp->vm_arch.vm_seg[S].mem_len) - 1;
if(proclimit > limit)
limit = proclimit;
vmp->vm_flags = VMF_INUSE;
vmp->vm_endpoint = ip->endpoint;
vmp->vm_stacktop =
CLICK2ABS(vmp->vm_arch.vm_seg[S].mem_vir +
vmp->vm_arch.vm_seg[S].mem_len);
if (vmp->vm_arch.vm_seg[T].mem_len != 0)
vmp->vm_flags |= VMF_SEPARATE;
}
/* Architecture-dependent initialization. */
pt_init(limit);
/* Initialize tables to all physical memory. */
mem_init(mem_chunks);
meminit_done = 1;
/* Give these processes their own page table. */
for (ip = &image[0]; ip < &image[NR_BOOT_PROCS]; ip++) {
int s;
struct vmproc *vmp;
vir_bytes old_stacktop, old_stack;
if(ip->proc_nr < 0) continue;
GETVMP(vmp, ip->proc_nr);
if(!(ip->flags & PROC_FULLVM))
continue;
old_stack =
vmp->vm_arch.vm_seg[S].mem_vir +
vmp->vm_arch.vm_seg[S].mem_len -
vmp->vm_arch.vm_seg[D].mem_len;
if(pt_new(&vmp->vm_pt) != OK)
vm_panic("VM: no new pagetable", NO_NUM);
#define BASICSTACK VM_PAGE_SIZE
old_stacktop = CLICK2ABS(vmp->vm_arch.vm_seg[S].mem_vir +
vmp->vm_arch.vm_seg[S].mem_len);
if(sys_vmctl(vmp->vm_endpoint, VMCTL_INCSP,
VM_STACKTOP - old_stacktop) != OK) {
vm_panic("VM: vmctl for new stack failed", NO_NUM);
}
FREE_MEM(vmp->vm_arch.vm_seg[D].mem_phys +
vmp->vm_arch.vm_seg[D].mem_len,
old_stack);
if(proc_new(vmp,
VM_PROCSTART,
CLICK2ABS(vmp->vm_arch.vm_seg[T].mem_len),
CLICK2ABS(vmp->vm_arch.vm_seg[D].mem_len),
BASICSTACK,
CLICK2ABS(vmp->vm_arch.vm_seg[S].mem_vir +
vmp->vm_arch.vm_seg[S].mem_len -
vmp->vm_arch.vm_seg[D].mem_len) - BASICSTACK,
CLICK2ABS(vmp->vm_arch.vm_seg[T].mem_phys),
CLICK2ABS(vmp->vm_arch.vm_seg[D].mem_phys),
VM_STACKTOP) != OK) {
vm_panic("failed proc_new for boot process", NO_NUM);
}
}
/* Set up table of calls. */
#define CALLMAP(code, func) { int i; \
if((i=CALLNUMBER(code)) < 0) { vm_panic(#code " invalid", (code)); } \
if(i >= NR_VM_CALLS) { vm_panic(#code " invalid", (code)); } \
vm_calls[i].vmc_func = (func); \
vm_calls[i].vmc_name = #code; \
}
/* Set call table to 0. This invalidates all calls (clear
* vmc_func).
*/
memset(vm_calls, 0, sizeof(vm_calls));
/* Basic VM calls. */
CALLMAP(VM_MMAP, do_mmap);
CALLMAP(VM_MUNMAP, do_munmap);
CALLMAP(VM_MUNMAP_TEXT, do_munmap);
CALLMAP(VM_MAP_PHYS, do_map_phys);
CALLMAP(VM_UNMAP_PHYS, do_unmap_phys);
/* Calls from PM. */
CALLMAP(VM_EXIT, do_exit);
CALLMAP(VM_FORK, do_fork);
CALLMAP(VM_BRK, do_brk);
CALLMAP(VM_EXEC_NEWMEM, do_exec_newmem);
CALLMAP(VM_PUSH_SIG, do_push_sig);
CALLMAP(VM_WILLEXIT, do_willexit);
CALLMAP(VM_ADDDMA, do_adddma);
CALLMAP(VM_DELDMA, do_deldma);
CALLMAP(VM_GETDMA, do_getdma);
CALLMAP(VM_NOTIFY_SIG, do_notify_sig);
/* Calls from RS */
CALLMAP(VM_RS_SET_PRIV, do_rs_set_priv);
/* Generic calls. */
CALLMAP(VM_REMAP, do_remap);
CALLMAP(VM_GETPHYS, do_get_phys);
CALLMAP(VM_SHM_UNMAP, do_shared_unmap);
CALLMAP(VM_GETREF, do_get_refcount);
CALLMAP(VM_INFO, do_info);
CALLMAP(VM_QUERY_EXIT, do_query_exit);
/* Sanity checks */
if(find_kernel_top() >= VM_PROCSTART)
vm_panic("kernel loaded too high", NO_NUM);
/* Initialize the structures for queryexit */
init_query_exit();
/* Unmap our own low pages. */
unmap_ok = 1;
_minix_unmapzero();
/* Map all the services in the boot image. */
if((s = sys_safecopyfrom(RS_PROC_NR, info->rproctab_gid, 0,
(vir_bytes) rprocpub, sizeof(rprocpub), S)) != OK) {
panic("VM", "sys_safecopyfrom failed", s);
}
for(i=0;i < NR_BOOT_PROCS;i++) {
if(rprocpub[i].in_use) {
if((s = map_service(&rprocpub[i])) != OK) {
vm_panic("unable to map service", s);
}
}
}
return(OK);
}
/*===========================================================================*
* sef_cb_init_fresh *
*===========================================================================*/
PRIVATE int sef_cb_init_fresh(int type, sef_init_info_t *info)
{
/* Initialize the reincarnation server. */
struct sigaction sa;
struct boot_image *ip;
int s,i,j;
int nr_image_srvs, nr_image_priv_srvs, nr_uncaught_init_srvs;
struct rproc *rp;
struct rprocpub *rpub;
struct boot_image image[NR_BOOT_PROCS];
struct mproc mproc[NR_PROCS];
struct exec header;
struct boot_image_priv *boot_image_priv;
struct boot_image_sys *boot_image_sys;
struct boot_image_dev *boot_image_dev;
/* See if we run in verbose mode. */
env_parse("rs_verbose", "d", 0, &rs_verbose, 0, 1);
/* Initialize the global init descriptor. */
rinit.rproctab_gid = cpf_grant_direct(ANY, (vir_bytes) rprocpub,
sizeof(rprocpub), CPF_READ);
if(!GRANT_VALID(rinit.rproctab_gid)) {
panic("RS", "unable to create rprocpub table grant", rinit.rproctab_gid);
}
/* Initialize the global update descriptor. */
rupdate.flags = 0;
/* Get a copy of the boot image table. */
if ((s = sys_getimage(image)) != OK) {
panic("RS", "unable to get copy of boot image table", s);
}
/* Determine the number of system services in the boot image table and
* compute the size required for the boot image buffer.
*/
nr_image_srvs = 0;
boot_image_buffer_size = 0;
for(i=0;i<NR_BOOT_PROCS;i++) {
ip = &image[i];
/* System services only. */
if(iskerneln(_ENDPOINT_P(ip->endpoint))) {
continue;
}
nr_image_srvs++;
/* Lookup the corresponding entry in the boot image sys table. */
boot_image_info_lookup(ip->endpoint, image,
NULL, NULL, &boot_image_sys, NULL);
/* If we must keep a copy of this system service, read the header
* and increase the size of the boot image buffer.
*/
if(boot_image_sys->flags & SF_USE_COPY) {
if((s = sys_getaoutheader(&header, i)) != OK) {
panic("RS", "unable to get copy of a.out header", s);
}
boot_image_buffer_size += header.a_hdrlen
+ header.a_text + header.a_data;
}
}
/* Determine the number of entries in the boot image priv table and make sure
* it matches the number of system services in the boot image table.
*/
nr_image_priv_srvs = 0;
for (i=0; boot_image_priv_table[i].endpoint != NULL_BOOT_NR; i++) {
boot_image_priv = &boot_image_priv_table[i];
/* System services only. */
if(iskerneln(_ENDPOINT_P(boot_image_priv->endpoint))) {
continue;
}
nr_image_priv_srvs++;
}
if(nr_image_srvs != nr_image_priv_srvs) {
panic("RS", "boot image table and boot image priv table mismatch",
NO_NUM);
}
/* Allocate boot image buffer. */
if(boot_image_buffer_size > 0) {
boot_image_buffer = rs_startup_sbrk(boot_image_buffer_size);
if(boot_image_buffer == (char *) -1) {
panic("RS", "unable to allocate boot image buffer", NO_NUM);
}
}
/* Reset the system process table. */
for (rp=BEG_RPROC_ADDR; rp<END_RPROC_ADDR; rp++) {
rp->r_flags = 0;
rp->r_pub = &rprocpub[rp - rproc];
rp->r_pub->in_use = FALSE;
}
/* Initialize the system process table in 4 steps, each of them following
* the appearance of system services in the boot image priv table.
* - Step 1: get a copy of the executable image of every system service that
* requires it while it is not yet running.
* In addition, set priviliges, sys properties, and dev properties (if any)
* for every system service.
*/
for (i=0; boot_image_priv_table[i].endpoint != NULL_BOOT_NR; i++) {
boot_image_priv = &boot_image_priv_table[i];
/* System services only. */
if(iskerneln(_ENDPOINT_P(boot_image_priv->endpoint))) {
continue;
}
/* Lookup the corresponding entries in other tables. */
boot_image_info_lookup(boot_image_priv->endpoint, image,
&ip, NULL, &boot_image_sys, &boot_image_dev);
rp = &rproc[boot_image_priv - boot_image_priv_table];
rpub = rp->r_pub;
/*
* Get a copy of the executable image if required.
*/
rp->r_exec_len = 0;
rp->r_exec = NULL;
if(boot_image_sys->flags & SF_USE_COPY) {
exec_image_copy(ip - image, ip, rp);
}
/*
* Set privileges.
*/
/* Get label. */
strcpy(rpub->label, boot_image_priv->label);
if(boot_image_priv->endpoint != RS_PROC_NR) {
/* Force a static priv id for system services in the boot image. */
rp->r_priv.s_id = static_priv_id(
_ENDPOINT_P(boot_image_priv->endpoint));
/* Initialize privilege bitmaps. */
rp->r_priv.s_flags = boot_image_priv->flags; /* priv flags */
rp->r_priv.s_trap_mask = boot_image_priv->trap_mask; /* traps */
memcpy(&rp->r_priv.s_ipc_to, &boot_image_priv->ipc_to,
sizeof(rp->r_priv.s_ipc_to)); /* targets */
/* Initialize kernel call mask bitmap from unordered set. */
fill_call_mask(boot_image_priv->k_calls, NR_SYS_CALLS,
rp->r_priv.s_k_call_mask, KERNEL_CALL, TRUE);
/* Set the privilege structure. */
if ((s = sys_privctl(ip->endpoint, SYS_PRIV_SET_SYS, &(rp->r_priv)))
!= OK) {
panic("RS", "unable to set privilege structure", s);
}
}
/* Synch the privilege structure with the kernel. */
if ((s = sys_getpriv(&(rp->r_priv), ip->endpoint)) != OK) {
panic("RS", "unable to synch privilege structure", s);
}
/*
* Set sys properties.
*/
rpub->sys_flags = boot_image_sys->flags; /* sys flags */
/*
* Set dev properties.
*/
rpub->dev_nr = boot_image_dev->dev_nr; /* major device number */
rpub->dev_style = boot_image_dev->dev_style; /* device style */
rpub->period = boot_image_dev->period; /* heartbeat period */
/* Get process name. */
strcpy(rpub->proc_name, ip->proc_name);
/* Get command settings. */
rp->r_cmd[0]= '\0';
rp->r_argv[0] = rp->r_cmd;
rp->r_argv[1] = NULL;
rp->r_argc = 1;
rp->r_script[0]= '\0';
/* Initialize vm call mask bitmap from unordered set. */
fill_call_mask(boot_image_priv->vm_calls, NR_VM_CALLS,
rpub->vm_call_mask, VM_RQ_BASE, TRUE);
/* Get some settings from the boot image table. */
rp->r_nice = ip->priority;
rpub->endpoint = ip->endpoint;
/* Set some defaults. */
rp->r_uid = 0; /* root */
rp->r_check_tm = 0; /* not checked yet */
getuptime(&rp->r_alive_tm); /* currently alive */
rp->r_stop_tm = 0; /* not exiting yet */
rp->r_restarts = 0; /* no restarts so far */
rp->r_set_resources = 0; /* don't set resources */
/* Mark as in use. */
rp->r_flags = RS_IN_USE;
rproc_ptr[_ENDPOINT_P(rpub->endpoint)]= rp;
rpub->in_use = TRUE;
}
/* - Step 2: allow every system service in the boot image to run.
*/
nr_uncaught_init_srvs = 0;
for (i=0; boot_image_priv_table[i].endpoint != NULL_BOOT_NR; i++) {
boot_image_priv = &boot_image_priv_table[i];
/* System services only. */
if(iskerneln(_ENDPOINT_P(boot_image_priv->endpoint))) {
continue;
}
/* Ignore RS. */
if(boot_image_priv->endpoint == RS_PROC_NR) {
continue;
}
/* Lookup the corresponding slot in the system process table. */
rp = &rproc[boot_image_priv - boot_image_priv_table];
rpub = rp->r_pub;
/* Allow the service to run. */
if ((s = sys_privctl(rpub->endpoint, SYS_PRIV_ALLOW, NULL)) != OK) {
panic("RS", "unable to initialize privileges", s);
}
/* Initialize service. We assume every service will always get
* back to us here at boot time.
*/
if(boot_image_priv->flags & SYS_PROC) {
if ((s = init_service(rp, SEF_INIT_FRESH)) != OK) {
panic("RS", "unable to initialize service", s);
}
if(rpub->sys_flags & SF_SYNCH_BOOT) {
/* Catch init ready message now to synchronize. */
catch_boot_init_ready(rpub->endpoint);
}
else {
/* Catch init ready message later. */
nr_uncaught_init_srvs++;
}
}
}
/* - Step 3: let every system service complete initialization by
* catching all the init ready messages left.
*/
while(nr_uncaught_init_srvs) {
catch_boot_init_ready(ANY);
nr_uncaught_init_srvs--;
}
/* - Step 4: all the system services in the boot image are now running.
* Complete the initialization of the system process table in collaboration
* with other system processes.
*/
if ((s = getsysinfo(PM_PROC_NR, SI_PROC_TAB, mproc)) != OK) {
panic("RS", "unable to get copy of PM process table", s);
}
for (i=0; boot_image_priv_table[i].endpoint != NULL_BOOT_NR; i++) {
boot_image_priv = &boot_image_priv_table[i];
/* System services only. */
if(iskerneln(_ENDPOINT_P(boot_image_priv->endpoint))) {
continue;
}
/* Lookup the corresponding slot in the system process table. */
rp = &rproc[boot_image_priv - boot_image_priv_table];
rpub = rp->r_pub;
/* Get pid from PM process table. */
rp->r_pid = NO_PID;
for (j = 0; j < NR_PROCS; j++) {
if (mproc[j].mp_endpoint == rpub->endpoint) {
rp->r_pid = mproc[j].mp_pid;
break;
}
}
if(j == NR_PROCS) {
panic("RS", "unable to get pid", NO_NUM);
}
}
/*
* Now complete RS initialization process in collaboration with other
* system services.
*/
/* Let the rest of the system know about our dynamically allocated buffer. */
if(boot_image_buffer_size > 0) {
boot_image_buffer = rs_startup_sbrk_synch(boot_image_buffer_size);
if(boot_image_buffer == (char *) -1) {
panic("RS", "unable to synch boot image buffer", NO_NUM);
}
}
/* Set alarm to periodically check service status. */
if (OK != (s=sys_setalarm(RS_DELTA_T, 0)))
panic("RS", "couldn't set alarm", s);
/* Install signal handlers. Ask PM to transform signal into message. */
sa.sa_handler = SIG_MESS;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
if (sigaction(SIGCHLD,&sa,NULL)<0) panic("RS","sigaction failed", errno);
if (sigaction(SIGTERM,&sa,NULL)<0) panic("RS","sigaction failed", errno);
/* Initialize the exec pipe. */
if (pipe(exec_pipe) == -1)
panic("RS", "pipe failed", errno);
if (fcntl(exec_pipe[0], F_SETFD,
fcntl(exec_pipe[0], F_GETFD) | FD_CLOEXEC) == -1)
{
panic("RS", "fcntl set FD_CLOEXEC on pipe input failed", errno);
}
if (fcntl(exec_pipe[1], F_SETFD,
fcntl(exec_pipe[1], F_GETFD) | FD_CLOEXEC) == -1)
{
panic("RS", "fcntl set FD_CLOEXEC on pipe output failed", errno);
}
if (fcntl(exec_pipe[0], F_SETFL,
fcntl(exec_pipe[0], F_GETFL) | O_NONBLOCK) == -1)
{
panic("RS", "fcntl set O_NONBLOCK on pipe input failed", errno);
}
/* Map out our own text and data. This is normally done in crtso.o
* but RS is an exception - we don't get to talk to VM so early on.
* That's why we override munmap() and munmap_text() in utility.c.
*
* _minix_unmapzero() is the same code in crtso.o that normally does
* it on startup. It's best that it's there as crtso.o knows exactly
* what the ranges are of the filler data.
*/
unmap_ok = 1;
_minix_unmapzero();
return(OK);
}
/*===========================================================================*
* sef_cb_init_fresh *
*===========================================================================*/
static int sef_cb_init_fresh(int UNUSED(type), sef_init_info_t *UNUSED(info))
{
/* Initialize the process manager. */
int s;
static struct boot_image image[NR_BOOT_PROCS];
register struct boot_image *ip;
static char core_sigs[] = { SIGQUIT, SIGILL, SIGTRAP, SIGABRT,
SIGEMT, SIGFPE, SIGBUS, SIGSEGV };
static char ign_sigs[] = { SIGCHLD, SIGWINCH, SIGCONT, SIGINFO };
static char noign_sigs[] = { SIGILL, SIGTRAP, SIGEMT, SIGFPE,
SIGBUS, SIGSEGV };
register struct mproc *rmp;
register char *sig_ptr;
message mess;
/* Initialize process table, including timers. */
for (rmp=&mproc[0]; rmp<&mproc[NR_PROCS]; rmp++) {
init_timer(&rmp->mp_timer);
rmp->mp_magic = MP_MAGIC;
rmp->mp_sigact = mpsigact[rmp - mproc];
rmp->mp_eventsub = NO_EVENTSUB;
}
/* Build the set of signals which cause core dumps, and the set of signals
* that are by default ignored.
*/
sigemptyset(&core_sset);
for (sig_ptr = core_sigs; sig_ptr < core_sigs+sizeof(core_sigs); sig_ptr++)
sigaddset(&core_sset, *sig_ptr);
sigemptyset(&ign_sset);
for (sig_ptr = ign_sigs; sig_ptr < ign_sigs+sizeof(ign_sigs); sig_ptr++)
sigaddset(&ign_sset, *sig_ptr);
sigemptyset(&noign_sset);
for (sig_ptr = noign_sigs; sig_ptr < noign_sigs+sizeof(noign_sigs); sig_ptr++)
sigaddset(&noign_sset, *sig_ptr);
/* Obtain a copy of the boot monitor parameters.
*/
if ((s=sys_getmonparams(monitor_params, sizeof(monitor_params))) != OK)
panic("get monitor params failed: %d", s);
/* Initialize PM's process table. Request a copy of the system image table
* that is defined at the kernel level to see which slots to fill in.
*/
if (OK != (s=sys_getimage(image)))
panic("couldn't get image table: %d", s);
procs_in_use = 0; /* start populating table */
for (ip = &image[0]; ip < &image[NR_BOOT_PROCS]; ip++) {
if (ip->proc_nr >= 0) { /* task have negative nrs */
procs_in_use += 1; /* found user process */
/* Set process details found in the image table. */
rmp = &mproc[ip->proc_nr];
strlcpy(rmp->mp_name, ip->proc_name, PROC_NAME_LEN);
(void) sigemptyset(&rmp->mp_ignore);
(void) sigemptyset(&rmp->mp_sigmask);
(void) sigemptyset(&rmp->mp_catch);
if (ip->proc_nr == INIT_PROC_NR) { /* user process */
/* INIT is root, we make it father of itself. This is
* not really OK, INIT should have no father, i.e.
* a father with pid NO_PID. But PM currently assumes
* that mp_parent always points to a valid slot number.
*/
rmp->mp_parent = INIT_PROC_NR;
rmp->mp_procgrp = rmp->mp_pid = INIT_PID;
rmp->mp_flags |= IN_USE;
/* Set scheduling info */
rmp->mp_scheduler = KERNEL;
rmp->mp_nice = get_nice_value(USR_Q);
}
else { /* system process */
if(ip->proc_nr == RS_PROC_NR) {
rmp->mp_parent = INIT_PROC_NR;
}
else {
rmp->mp_parent = RS_PROC_NR;
}
rmp->mp_pid = get_free_pid();
rmp->mp_flags |= IN_USE | PRIV_PROC;
/* RS schedules this process */
rmp->mp_scheduler = NONE;
rmp->mp_nice = get_nice_value(SRV_Q);
}
/* Get kernel endpoint identifier. */
rmp->mp_endpoint = ip->endpoint;
/* Tell VFS about this system process. */
memset(&mess, 0, sizeof(mess));
mess.m_type = VFS_PM_INIT;
mess.VFS_PM_SLOT = ip->proc_nr;
mess.VFS_PM_PID = rmp->mp_pid;
mess.VFS_PM_ENDPT = rmp->mp_endpoint;
if (OK != (s=ipc_send(VFS_PROC_NR, &mess)))
panic("can't sync up with VFS: %d", s);
}
}
/* Tell VFS that no more system processes follow and synchronize. */
memset(&mess, 0, sizeof(mess));
mess.m_type = VFS_PM_INIT;
mess.VFS_PM_ENDPT = NONE;
if (ipc_sendrec(VFS_PROC_NR, &mess) != OK || mess.m_type != OK)
panic("can't sync up with VFS");
system_hz = sys_hz();
/* Initialize user-space scheduling. */
sched_init();
return(OK);
}
/*===========================================================================*
* vm_init *
*===========================================================================*/
static void vm_init(void)
{
int s, i;
int click, clicksforgotten = 0;
struct memory mem_chunks[NR_MEMS];
struct boot_image image[NR_BOOT_PROCS];
struct boot_image *ip;
phys_bytes limit = 0;
/* The initrd is put right after boot image */
if ((s = sys_getbootparam(&bootparam)) != 0) {
panic("VM","Couldn't get boot parameters!",s);
}
/* get what setup found out */
memcpy(mem_chunks, bootparam.nucleos_kludge.mem, sizeof(bootparam.nucleos_kludge.mem));
/* Get chunks of available memory. */
get_mem_chunks(mem_chunks);
/* Initialize VM's process table. Request a copy of the system
* image table that is defined at the kernel level to see which
* slots to fill in.
*/
if ((s=sys_getimage(image)) != 0)
vm_panic("couldn't get image table: %d\n", s);
/* Set table to 0. This invalidates all slots (clear VMF_INUSE). */
memset(vmproc, 0, sizeof(vmproc));
for(i = 0; i < ELEMENTS(vmproc); i++) {
vmproc[i].vm_slot = i;
}
/* Walk through boot-time system processes that are alive
* now and make valid slot entries for them.
*/
for (ip = &image[0]; ip < &image[NR_BOOT_PROCS]; ip++) {
phys_bytes proclimit;
struct vmproc *vmp;
if(ip->proc_nr >= NR_PROCS) {
vm_panic("proc", ip->proc_nr);
}
if(ip->proc_nr < 0 && ip->proc_nr != SYSTEM) continue;
#define GETVMP(v, nr) \
if(nr >= 0) { \
vmp = &vmproc[ip->proc_nr]; \
} else if(nr == SYSTEM) { \
vmp = &vmproc[VMP_SYSTEM]; \
} else { \
vm_panic("init: crazy proc_nr", nr); \
}
/* Initialize normal process table slot or special SYSTEM
* table slot. Kernel memory is already reserved.
*/
GETVMP(vmp, ip->proc_nr);
/* reset fields as if exited */
clear_proc(vmp);
/* Get memory map for this process from the kernel. */
if ((s=get_mem_map(ip->proc_nr, vmp->vm_arch.vm_seg)) != 0)
vm_panic("couldn't get process mem_map",s);
/* Remove this memory from the free list. */
reserve_proc_mem(mem_chunks, vmp->vm_arch.vm_seg);
/* Set memory limit. */
proclimit = CLICK2ABS(vmp->vm_arch.vm_seg[S].mem_phys +
vmp->vm_arch.vm_seg[S].mem_len) - 1;
if(proclimit > limit)
limit = proclimit;
vmp->vm_flags = VMF_INUSE;
vmp->vm_endpoint = ip->endpoint;
vmp->vm_stacktop =
CLICK2ABS(vmp->vm_arch.vm_seg[S].mem_vir +
vmp->vm_arch.vm_seg[S].mem_len);
}
#ifndef CONFIG_BUILTIN_INITRD
/* Remove initrd memory from the free list. We must do it right after we
have reserved memory for boot image otherwise it may happen that initrd
will be overwritten by other process (in arch_init_vm).
*/
if ((s = reserve_initrd_mem(mem_chunks, bootparam.hdr.ramdisk_image,
bootparam.hdr.ramdisk_size)) < 0) {
panic("VM", "Couldn't reserve memory for initial ramdisk!", s);
}
#endif
/* Architecture-dependent initialization. */
pt_init(limit);
/* Initialize tables to all physical memory. */
mem_init(mem_chunks);
meminit_done = 1;
/* Give these processes their own page table. */
for (ip = &image[0]; ip < &image[NR_BOOT_PROCS]; ip++) {
int s;
struct vmproc *vmp;
vir_bytes old_stacktop, old_stack;
if(ip->proc_nr < 0) continue;
GETVMP(vmp, ip->proc_nr);
if(!(ip->flags & PROC_FULLVM))
continue;
old_stack =
vmp->vm_arch.vm_seg[S].mem_vir +
vmp->vm_arch.vm_seg[S].mem_len -
vmp->vm_arch.vm_seg[D].mem_len;
if(pt_new(&vmp->vm_pt) != 0)
vm_panic("vm_init: no new pagetable", NO_NUM);
#define BASICSTACK VM_PAGE_SIZE
old_stacktop = CLICK2ABS(vmp->vm_arch.vm_seg[S].mem_vir +
vmp->vm_arch.vm_seg[S].mem_len);
if(sys_vmctl(vmp->vm_endpoint, VMCTL_INCSP,
VM_STACKTOP - old_stacktop) != 0) {
vm_panic("VM: vmctl for new stack failed", NO_NUM);
}
FREE_MEM(vmp->vm_arch.vm_seg[D].mem_phys +
vmp->vm_arch.vm_seg[D].mem_len,
old_stack);
if(proc_new(vmp,
VM_PROCSTART,
CLICK2ABS(vmp->vm_arch.vm_seg[T].mem_len),
CLICK2ABS(vmp->vm_arch.vm_seg[D].mem_len),
BASICSTACK,
CLICK2ABS(vmp->vm_arch.vm_seg[S].mem_vir +
vmp->vm_arch.vm_seg[S].mem_len -
vmp->vm_arch.vm_seg[D].mem_len) - BASICSTACK,
CLICK2ABS(vmp->vm_arch.vm_seg[T].mem_phys),
CLICK2ABS(vmp->vm_arch.vm_seg[D].mem_phys),
VM_STACKTOP) != 0) {
vm_panic("failed proc_new for boot process", NO_NUM);
}
}
/* Set up table of calls. */
#define CALLMAP(code, func, thecaller) { int i; \
if((i=CALLNUMBER(code)) < 0) { vm_panic(#code " invalid", (code)); } \
if(i >= VM_NCALLS) { vm_panic(#code " invalid", (code)); } \
vm_calls[i].vmc_func = (func); \
vm_calls[i].vmc_name = #code; \
if(((thecaller) < MINEPM || (thecaller) > MAXEPM) \
&& (thecaller) != ANYEPM \
&& (thecaller) != NEEDACL ) { \
vm_panic(#thecaller " invalid", (code)); \
} \
vm_calls[i].vmc_callers |= EPM(thecaller); \
}
/* Set call table to 0. This invalidates all calls (clear
* vmc_func).
*/
memset(vm_calls, 0, sizeof(vm_calls));
/* Requests from PM (restricted to be from PM only). */
CALLMAP(VM_EXIT, do_exit, PM_PROC_NR);
CALLMAP(VM_FORK, do_fork, PM_PROC_NR);
CALLMAP(VM_BRK, do_brk, PM_PROC_NR);
CALLMAP(VM_EXEC_NEWMEM, do_exec_newmem, PM_PROC_NR);
CALLMAP(VM_PUSH_SIG, do_push_sig, PM_PROC_NR);
CALLMAP(VM_WILLEXIT, do_willexit, PM_PROC_NR);
CALLMAP(VM_ADDDMA, do_adddma, PM_PROC_NR);
CALLMAP(VM_DELDMA, do_deldma, PM_PROC_NR);
CALLMAP(VM_GETDMA, do_getdma, PM_PROC_NR);
CALLMAP(VM_ALLOCMEM, do_allocmem, PM_PROC_NR);
CALLMAP(VM_NOTIFY_SIG, do_notify_sig, PM_PROC_NR);
/* Requests from RS */
CALLMAP(VM_RS_SET_PRIV, do_rs_set_priv, RS_PROC_NR);
/* Requests from userland (source unrestricted). */
CALLMAP(VM_MMAP, do_mmap, ANYEPM);
CALLMAP(VM_MUNMAP, do_munmap, ANYEPM);
CALLMAP(VM_MUNMAP_TEXT, do_munmap, ANYEPM);
CALLMAP(VM_MAP_PHYS, do_map_phys, ANYEPM); /* Does its own checking. */
CALLMAP(VM_UNMAP_PHYS, do_unmap_phys, ANYEPM);
CALLMAP(NNR_VM_MMAP, scall_mmap, ANYEPM);
CALLMAP(NNR_VM_MUNMAP, scall_munmap, ANYEPM);
CALLMAP(NNR_VM_MUNMAP_TEXT, scall_munmap, ANYEPM);
/* Requests from userland (anyone can call but need an ACL bit). */
CALLMAP(VM_REMAP, do_remap, NEEDACL);
CALLMAP(VM_GETPHYS, do_get_phys, NEEDACL);
CALLMAP(VM_SHM_UNMAP, do_shared_unmap, NEEDACL);
CALLMAP(VM_GETREF, do_get_refcount, NEEDACL);
CALLMAP(VM_CTL, do_ctl, NEEDACL);
CALLMAP(VM_QUERY_EXIT, do_query_exit, NEEDACL);
/* Sanity checks */
if(find_kernel_top() >= VM_PROCSTART)
vm_panic("kernel loaded too high", NO_NUM);
/* Initialize the structures for queryexit */
init_query_exit();
/* Unmap our own low pages. */
unmap_ok = 1;
unmap_page_zero();
}