/*===========================================================================*
* sef_cb_init_fresh *
*===========================================================================*/
static int sef_cb_init_fresh(int UNUSED(type), sef_init_info_t *UNUSED(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 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 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. RS and VM are exceptions and are already
* running.
*/
if(boot_image_priv->endpoint != RS_PROC_NR &&
boot_image_priv->endpoint != VM_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 */
/* Build command settings. This will also set the process name. */
strlcpy(rp->r_cmd, ip->proc_name, sizeof(rp->r_cmd));
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/VM are already running as we speak. */
if(boot_image_priv->endpoint == RS_PROC_NR ||
boot_image_priv->endpoint == VM_PROC_NR) {
if ((s = init_service(rp, SEF_INIT_FRESH)) != OK) {
panic("unable to initialize %d: %d", boot_image_priv->endpoint, 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);
#if USE_LIVEUPDATE
/* Now create a new RS instance 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 with root:operator. */
pid = srv_fork(0, 0);
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);
/* 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;
}
#endif /* USE_LIVEUPDATE */
return(OK);
}
/*===========================================================================*
* driver_open *
*===========================================================================*/
static int driver_open(int which)
{
/* Perform an open or close operation on the driver. This is
* unfinished code: we should never be doing a blocking sendrec() to
* the driver.
*/
message msg;
cp_grant_id_t gid;
struct partition part;
sector_t sectors;
int r;
memset(&msg, 0, sizeof(msg));
msg.m_type = BDEV_OPEN;
msg.BDEV_MINOR = driver[which].minor;
msg.BDEV_ACCESS = R_BIT | W_BIT;
msg.BDEV_ID = 0;
r = sendrec(driver[which].endpt, &msg);
if (r != OK) {
/* Should we restart the driver now? */
printf("Filter: driver_open: sendrec returned %d\n", r);
return RET_REDO;
}
if(msg.m_type != BDEV_REPLY || msg.BDEV_STATUS != OK) {
printf("Filter: driver_open: sendrec returned %d, %d\n",
msg.m_type, msg.BDEV_STATUS);
return RET_REDO;
}
/* Take the opportunity to retrieve the hard disk size. */
gid = cpf_grant_direct(driver[which].endpt,
(vir_bytes) &part, sizeof(part), CPF_WRITE);
if(!GRANT_VALID(gid))
panic("invalid grant: %d", gid);
memset(&msg, 0, sizeof(msg));
msg.m_type = BDEV_IOCTL;
msg.BDEV_MINOR = driver[which].minor;
msg.BDEV_REQUEST = DIOCGETP;
msg.BDEV_GRANT = gid;
msg.BDEV_ID = 0;
r = sendrec(driver[which].endpt, &msg);
cpf_revoke(gid);
if (r != OK || msg.m_type != BDEV_REPLY || msg.BDEV_STATUS != OK) {
/* Not sure what to do here, either. */
printf("Filter: ioctl(DIOCGETP) returned (%d, %d)\n",
r, msg.m_type);
return RET_REDO;
}
if(!size_known) {
disk_size = part.size;
size_known = 1;
sectors = div64u(disk_size, SECTOR_SIZE);
if(cmp64(mul64u(sectors, SECTOR_SIZE), disk_size)) {
printf("Filter: partition too large\n");
return RET_REDO;
}
#if DEBUG
printf("Filter: partition size: 0x%s / %lu sectors\n",
print64(disk_size), sectors);
#endif
} else {
if(cmp64(disk_size, part.size)) {
printf("Filter: partition size mismatch (%s != %s)\n",
print64(part.size), print64(disk_size));
return RET_REDO;
}
}
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);
}
static int bdev_vrdwt_setup(int req, dev_t dev, u64_t pos, iovec_t *vec,
int count, int flags, message *m, iovec_s_t *gvec)
{
/* Set up a vectored read/write request.
*/
ssize_t size;
endpoint_t endpt;
cp_grant_id_t grant;
int i, access;
assert(count <= NR_IOREQS);
if ((endpt = bdev_driver_get(dev)) == NONE)
return EDEADSRCDST;
access = (req == BDEV_GATHER) ? CPF_WRITE : CPF_READ;
size = 0;
for (i = 0; i < count; i++) {
grant = cpf_grant_direct(endpt, vec[i].iov_addr, vec[i].iov_size,
access);
if (!GRANT_VALID(grant)) {
printf("bdev: unable to allocate grant!\n");
for (i--; i >= 0; i--)
cpf_revoke(gvec[i].iov_grant);
return EINVAL;
}
gvec[i].iov_grant = grant;
gvec[i].iov_size = vec[i].iov_size;
assert((ssize_t) (size + vec[i].iov_size) > size);
size += vec[i].iov_size;
}
grant = cpf_grant_direct(endpt, (vir_bytes) gvec, sizeof(gvec[0]) * count,
CPF_READ);
if (!GRANT_VALID(grant)) {
printf("bdev: unable to allocate grant!\n");
for (i = count - 1; i >= 0; i--)
cpf_revoke(gvec[i].iov_grant);
return EINVAL;
}
memset(m, 0, sizeof(*m));
m->m_type = req;
m->BDEV_MINOR = minor(dev);
m->BDEV_POS_LO = ex64lo(pos);
m->BDEV_POS_HI = ex64hi(pos);
m->BDEV_COUNT = count;
m->BDEV_GRANT = grant;
m->BDEV_FLAGS = flags;
return OK;
}