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phunix/commands/service/service.c
Arun Thomas 998af6f111 Move minix/paths.h to paths.h 
Also, merge in relevant macros from NetBSD
2010-11-06 20:40:15 +00:00

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/* Utility to start or stop system services. Requests are sent to the
* reincarnation server that does the actual work.
*
* Changes:
* Nov 22, 2009: added basic live update support (Cristiano Giuffrida)
* Jul 22, 2005: Created (Jorrit N. Herder)
*/
#include <stdarg.h>
#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <pwd.h>
#include <unistd.h>
#include <limits.h>
#include <lib.h>
#include <minix/config.h>
#include <minix/com.h>
#include <minix/const.h>
#include <minix/type.h>
#include <minix/ipc.h>
#include <minix/rs.h>
#include <minix/syslib.h>
#include <minix/bitmap.h>
#include <paths.h>
#include <minix/sef.h>
#include <minix/dmap.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <configfile.h>
#include <machine/archtypes.h>
#include <timers.h>
#include "kernel/proc.h"
/* This array defines all known requests. */
PRIVATE char *known_requests[] = {
"up",
"down",
"refresh",
"restart",
"shutdown",
"update",
"clone",
"edit",
"catch for illegal requests"
};
#define ILLEGAL_REQUEST sizeof(known_requests)/sizeof(char *)
/* Global error number set for failed system calls. */
#define OK 0
#define RUN_CMD "run"
#define RUN_SCRIPT "/etc/rs.single" /* Default script for 'run' */
#define SELF_BINARY "self"
#define SELF_REQ_PATH "/dev/null"
#define PATH_CONFIG _PATH_SYSTEM_CONF /* Default config file */
#define DEFAULT_LU_STATE SEF_LU_STATE_WORK_FREE /* Default lu state */
#define DEFAULT_LU_MAXTIME 0 /* Default lu max time */
/* Define names for options provided to this utility. */
#define OPT_COPY "-c" /* copy executable image */
#define OPT_REUSE "-r" /* reuse executable image */
#define OPT_NOBLOCK "-n" /* unblock caller immediately */
#define OPT_REPLICA "-p" /* create replica for the service */
/* Define names for arguments provided to this utility. The first few
* arguments are required and have a known index. Thereafter, some optional
* argument pairs like "-args arglist" follow.
*/
#define ARG_NAME 0 /* own application name */
/* The following are relative to optind */
#define ARG_REQUEST 0 /* request to perform */
#define ARG_PATH 1 /* system service */
#define ARG_LABEL 1 /* name of system service */
#define MIN_ARG_COUNT 1 /* require an action */
#define ARG_ARGS "-args" /* list of arguments to be passed */
#define ARG_DEV "-dev" /* major device number for drivers */
#define ARG_DEVSTYLE "-devstyle" /* device style */
#define ARG_PERIOD "-period" /* heartbeat period in ticks */
#define ARG_SCRIPT "-script" /* name of the script to restart a
* system service
*/
#define ARG_LABELNAME "-label" /* custom label name */
#define ARG_CONFIG "-config" /* name of the file with the resource
* configuration
*/
#define ARG_LU_STATE "-state" /* the live update state required */
#define ARG_LU_MAXTIME "-maxtime" /* max time to prepare for the update */
#define SERVICE_LOGIN "service" /* passwd file entry for services */
#define MAX_CLASS_RECURS 100 /* Max nesting level for classes */
/* The function parse_arguments() verifies and parses the command line
* parameters passed to this utility. Request parameters that are needed
* are stored globally in the following variables:
*/
PRIVATE int req_type;
PRIVATE int do_run= 0; /* 'run' command instead of 'up' */
PRIVATE char *req_label = NULL;
PRIVATE char *req_path = NULL;
PRIVATE char *req_path_self = SELF_REQ_PATH;
PRIVATE char *req_args = "";
PRIVATE int req_major = 0;
PRIVATE int req_dev_style = STYLE_NDEV;
PRIVATE long req_period = 0;
PRIVATE char *req_script = NULL;
PRIVATE char *req_ipc = NULL;
PRIVATE char *req_config = PATH_CONFIG;
PRIVATE int custom_config_file = 0;
PRIVATE int class_recurs; /* Nesting level of class statements */
PRIVATE int req_lu_state = DEFAULT_LU_STATE;
PRIVATE int req_lu_maxtime = DEFAULT_LU_MAXTIME;
/* Buffer to build "/command arg1 arg2 ..." string to pass to RS server. */
PRIVATE char command[4096];
/* Arguments for RS to start a new service */
PRIVATE struct rs_start rs_start;
/* An error occurred. Report the problem, print the usage, and exit.
*/
PRIVATE void print_usage(char *app_name, char *problem)
{
fprintf(stderr, "Warning, %s\n", problem);
fprintf(stderr, "Usage:\n");
fprintf(stderr,
" %s [%s %s %s %s] (up|run|edit|update) <binary|%s> [%s <args>] [%s <special>] [%s <style>] [%s <ticks>] [%s <path>] [%s <name>] [%s <path>] [%s <state>] [%s <time>]\n",
app_name, OPT_COPY, OPT_REUSE, OPT_NOBLOCK, OPT_REPLICA, SELF_BINARY,
ARG_ARGS, ARG_DEV, ARG_DEVSTYLE, ARG_PERIOD, ARG_SCRIPT,
ARG_LABELNAME, ARG_CONFIG, ARG_LU_STATE, ARG_LU_MAXTIME);
fprintf(stderr, " %s down <label>\n", app_name);
fprintf(stderr, " %s refresh <label>\n", app_name);
fprintf(stderr, " %s restart <label>\n", app_name);
fprintf(stderr, " %s clone <label>\n", app_name);
fprintf(stderr, " %s shutdown\n", app_name);
fprintf(stderr, "\n");
}
/* A request to the RS server failed. Report and exit.
*/
PRIVATE void failure(void)
{
fprintf(stderr, "Request to RS failed: %s (error %d)\n", strerror(errno), errno);
exit(errno);
}
/* Parse and verify correctness of arguments. Report problem and exit if an
* error is found. Store needed parameters in global variables.
*/
PRIVATE int parse_arguments(int argc, char **argv)
{
struct stat stat_buf;
char *hz, *buff;
int req_nr;
int c, i, j;
int c_flag, r_flag, n_flag, p_flag;
int label_required;
c_flag = 0;
r_flag = 0;
n_flag = 0;
p_flag = 0;
while (c= getopt(argc, argv, "rcnp?"), c != -1)
{
switch(c)
{
case '?':
print_usage(argv[ARG_NAME], "wrong number of arguments");
exit(EINVAL);
case 'c':
c_flag = 1;
break;
case 'r':
c_flag = 1; /* -r implies -c */
r_flag = 1;
break;
case 'n':
n_flag = 1;
break;
case 'p':
p_flag = 1;
break;
default:
fprintf(stderr, "%s: getopt failed: %c\n",
argv[ARG_NAME], c);
exit(1);
}
}
/* Verify argument count. */
if (argc < optind+MIN_ARG_COUNT) {
print_usage(argv[ARG_NAME], "wrong number of arguments");
exit(EINVAL);
}
if (strcmp(argv[optind+ARG_REQUEST], RUN_CMD) == 0)
{
req_nr= RS_UP;
do_run= TRUE;
}
else
{
/* Verify request type. */
for (req_type=0; req_type< ILLEGAL_REQUEST; req_type++) {
if (strcmp(known_requests[req_type],argv[optind+ARG_REQUEST])==0)
break;
}
if (req_type == ILLEGAL_REQUEST) {
print_usage(argv[ARG_NAME], "illegal request type");
exit(ENOSYS);
}
req_nr = RS_RQ_BASE + req_type;
}
rs_start.rss_flags = RSS_SYS_BASIC_CALLS | RSS_VM_BASIC_CALLS;
if (req_nr == RS_UP || req_nr == RS_UPDATE || req_nr == RS_EDIT) {
u32_t system_hz;
if (c_flag)
rs_start.rss_flags |= RSS_COPY;
if(r_flag)
rs_start.rss_flags |= RSS_REUSE;
if(n_flag)
rs_start.rss_flags |= RSS_NOBLOCK;
if(p_flag)
rs_start.rss_flags |= RSS_REPLICA;
req_path = argv[optind+ARG_PATH];
if(req_nr == RS_UPDATE && !strcmp(req_path, SELF_BINARY)) {
/* Self update needs no real path or configuration file. */
req_config = NULL;
req_path = req_path_self;
rs_start.rss_flags |= RSS_SELF_LU;
}
if (do_run)
{
/* Set default recovery script for RUN */
req_script = RUN_SCRIPT;
}
/* Verify argument count. */
if (argc - 1 < optind+ARG_PATH) {
print_usage(argv[ARG_NAME], "action requires a binary to start");
exit(EINVAL);
}
/* Verify the name of the binary of the system service. */
if(!(rs_start.rss_flags & RSS_SELF_LU)) {
if (req_path[0] != '/') {
print_usage(argv[ARG_NAME], "binary should be absolute path");
exit(EINVAL);
}
if (stat(req_path, &stat_buf) == -1) {
perror(req_path);
fprintf(stderr, "couldn't get stat binary\n");
exit(errno);
}
if (! (stat_buf.st_mode & S_IFREG)) {
print_usage(argv[ARG_NAME], "binary is not a regular file");
exit(EINVAL);
}
}
/* Get HZ. */
system_hz = (u32_t) sysconf(_SC_CLK_TCK);
/* Check optional arguments that come in pairs like "-args arglist". */
for (i=optind+MIN_ARG_COUNT+1; i<argc; i=i+2) {
if (! (i+1 < argc)) {
print_usage(argv[ARG_NAME], "optional argument not complete");
exit(EINVAL);
}
if (strcmp(argv[i], ARG_ARGS)==0) {
req_args = argv[i+1];
}
else if (strcmp(argv[i], ARG_PERIOD)==0) {
req_period = strtol(argv[i+1], &hz, 10);
if (strcmp(hz,"HZ")==0) req_period *= system_hz;
if (req_period < 0) {
print_usage(argv[ARG_NAME], "bad period argument");
exit(EINVAL);
}
}
else if (strcmp(argv[i], ARG_DEV)==0) {
if (stat(argv[i+1], &stat_buf) == -1) {
perror(argv[i+1]);
print_usage(argv[ARG_NAME], "couldn't get status of device");
exit(errno);
}
if ( ! (stat_buf.st_mode & (S_IFBLK | S_IFCHR))) {
print_usage(argv[ARG_NAME], "special file is not a device");
exit(EINVAL);
}
req_major = (stat_buf.st_rdev >> MAJOR) & BYTE;
if(req_dev_style == STYLE_NDEV) {
req_dev_style = STYLE_DEV;
}
}
else if (strcmp(argv[i], ARG_DEVSTYLE)==0) {
char* dev_style_keys[] = { "STYLE_DEV", "STYLE_DEVA", "STYLE_TTY",
"STYLE_CTTY", "STYLE_CLONE", NULL };
int dev_style_values[] = { STYLE_DEV, STYLE_DEVA, STYLE_TTY,
STYLE_CTTY, STYLE_CLONE };
for(j=0;dev_style_keys[j]!=NULL;j++) {
if(!strcmp(dev_style_keys[j], argv[i+1])) {
break;
}
}
if(dev_style_keys[j] == NULL) {
print_usage(argv[ARG_NAME], "bad device style");
exit(EINVAL);
}
req_dev_style = dev_style_values[j];
}
else if (strcmp(argv[i], ARG_SCRIPT)==0) {
req_script = argv[i+1];
}
else if (strcmp(argv[i], ARG_LABELNAME)==0) {
req_label = argv[i+1];
}
else if (strcmp(argv[i], ARG_CONFIG)==0) {
req_config = argv[i+1];
custom_config_file = 1;
}
else if (strcmp(argv[i], ARG_LU_STATE)==0) {
errno=0;
req_lu_state = strtol(argv[i+1], &buff, 10);
if(errno || strcmp(buff, "")) {
print_usage(argv[ARG_NAME], "bad live update state");
exit(EINVAL);
}
if(req_lu_state == SEF_LU_STATE_NULL) {
print_usage(argv[ARG_NAME], "null live update state");
exit(EINVAL);
}
}
else if (strcmp(argv[i], ARG_LU_MAXTIME)==0) {
errno=0;
req_lu_maxtime = strtol(argv[i+1], &hz, 10);
if(errno || (strcmp(hz, "") && strcmp(hz, "HZ"))
|| req_lu_maxtime<0) {
print_usage(argv[ARG_NAME],
"bad live update max time");
exit(EINVAL);
}
if (strcmp(hz,"HZ")==0) req_lu_maxtime *= system_hz;
}
else {
print_usage(argv[ARG_NAME], "unknown optional argument given");
exit(EINVAL);
}
}
}
else if (req_nr == RS_DOWN || req_nr == RS_REFRESH || req_nr == RS_RESTART
|| req_nr == RS_CLONE) {
/* Verify argument count. */
if (argc - 1 < optind+ARG_LABEL) {
print_usage(argv[ARG_NAME], "action requires a target label");
exit(EINVAL);
}
req_label= argv[optind+ARG_LABEL];
}
else if (req_nr == RS_SHUTDOWN) {
/* no extra arguments required */
}
label_required = (rs_start.rss_flags & RSS_SELF_LU) || (req_nr == RS_EDIT);
if(label_required && !req_label) {
print_usage(argv[ARG_NAME], "label option mandatory for target action");
exit(EINVAL);
}
/* Return the request number if no error were found. */
return(req_nr);
}
PRIVATE void fatal(char *fmt, ...)
{
va_list ap;
fprintf(stderr, "fatal error: ");
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
fprintf(stderr, "\n");
exit(1);
}
#define KW_SERVICE "service"
#define KW_UID "uid"
#define KW_SIGMGR "sigmgr"
#define KW_SCHEDULER "scheduler"
#define KW_PRIORITY "priority"
#define KW_QUANTUM "quantum"
#define KW_CPU "cpu"
#define KW_IRQ "irq"
#define KW_IO "io"
#define KW_PCI "pci"
#define KW_DEVICE "device"
#define KW_CLASS "class"
#define KW_SYSTEM "system"
#define KW_IPC "ipc"
#define KW_VM "vm"
#define KW_CONTROL "control"
#define KW_ALL "ALL"
#define KW_ALL_SYS "ALL_SYS"
#define KW_NONE "NONE"
#define KW_BASIC "BASIC"
FORWARD void do_service(config_t *cpe, config_t *config);
PRIVATE void do_class(config_t *cpe, config_t *config)
{
config_t *cp, *cp1;
if (class_recurs > MAX_CLASS_RECURS)
{
fatal(
"do_class: nesting level too high for class '%s' at %s:%d",
cpe->word, cpe->file, cpe->line);
}
class_recurs++;
/* Process classes */
for (; cpe; cpe= cpe->next)
{
if (cpe->flags & CFG_SUBLIST)
{
fatal("do_class: unexpected sublist at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_STRING)
{
fatal("do_uid: unexpected string at %s:%d",
cpe->file, cpe->line);
}
/* Find entry for the class */
for (cp= config; cp; cp= cp->next)
{
if (!(cp->flags & CFG_SUBLIST))
{
fatal("do_class: expected list at %s:%d",
cp->file, cp->line);
}
cp1= cp->list;
if ((cp1->flags & CFG_STRING) ||
(cp1->flags & CFG_SUBLIST))
{
fatal("do_class: expected word at %s:%d",
cp1->file, cp1->line);
}
/* At this place we expect the word KW_SERVICE */
if (strcmp(cp1->word, KW_SERVICE) != 0)
fatal("do_class: exected word '%S' at %s:%d",
KW_SERVICE, cp1->file, cp1->line);
cp1= cp1->next;
if ((cp1->flags & CFG_STRING) ||
(cp1->flags & CFG_SUBLIST))
{
fatal("do_class: expected word at %s:%d",
cp1->file, cp1->line);
}
/* At this place we expect the name of the service */
if (strcmp(cp1->word, cpe->word) == 0)
break;
}
if (cp == NULL)
{
fatal(
"do_class: no entry found for class '%s' at %s:%d",
cpe->word, cpe->file, cpe->line);
}
do_service(cp1->next, config);
}
class_recurs--;
}
PRIVATE void do_uid(config_t *cpe)
{
uid_t uid;
struct passwd *pw;
char *check;
/* Process a uid */
if (cpe->next != NULL)
{
fatal("do_uid: just one uid/login expected at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_SUBLIST)
{
fatal("do_uid: unexpected sublist at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_STRING)
{
fatal("do_uid: unexpected string at %s:%d",
cpe->file, cpe->line);
}
pw= getpwnam(cpe->word);
if (pw != NULL)
uid= pw->pw_uid;
else
{
uid= strtol(cpe->word, &check, 0);
if (check[0] != '\0')
{
fatal("do_uid: bad uid/login '%s' at %s:%d",
cpe->word, cpe->file, cpe->line);
}
}
rs_start.rss_uid= uid;
}
PRIVATE void do_sigmgr(config_t *cpe)
{
endpoint_t sigmgr_ep;
int r;
/* Process a signal manager value */
if (cpe->next != NULL)
{
fatal("do_sigmgr: just one sigmgr value expected at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_SUBLIST)
{
fatal("do_sigmgr: unexpected sublist at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_STRING)
{
fatal("do_sigmgr: unexpected string at %s:%d",
cpe->file, cpe->line);
}
if(!strcmp(cpe->word, "SELF")) {
sigmgr_ep = SELF;
}
else {
r = minix_rs_lookup(cpe->word, &sigmgr_ep);
if(r != OK) {
fatal("do_sigmgr: unknown sigmgr %s at %s:%d",
cpe->word, cpe->file, cpe->line);
}
}
rs_start.rss_sigmgr= sigmgr_ep;
}
PRIVATE void do_scheduler(config_t *cpe)
{
endpoint_t scheduler_ep;
int r;
/* Process a scheduler value */
if (cpe->next != NULL)
{
fatal("do_scheduler: just one scheduler value expected at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_SUBLIST)
{
fatal("do_scheduler: unexpected sublist at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_STRING)
{
fatal("do_scheduler: unexpected string at %s:%d",
cpe->file, cpe->line);
}
if(!strcmp(cpe->word, "KERNEL")) {
scheduler_ep = KERNEL;
}
else {
r = minix_rs_lookup(cpe->word, &scheduler_ep);
if(r != OK) {
fatal("do_scheduler: unknown scheduler %s at %s:%d",
cpe->word, cpe->file, cpe->line);
}
}
rs_start.rss_scheduler= scheduler_ep;
}
PRIVATE void do_priority(config_t *cpe)
{
int priority_val;
char *check;
/* Process a priority value */
if (cpe->next != NULL)
{
fatal("do_priority: just one priority value expected at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_SUBLIST)
{
fatal("do_priority: unexpected sublist at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_STRING)
{
fatal("do_priority: unexpected string at %s:%d",
cpe->file, cpe->line);
}
priority_val= strtol(cpe->word, &check, 0);
if (check[0] != '\0')
{
fatal("do_priority: bad priority value '%s' at %s:%d",
cpe->word, cpe->file, cpe->line);
}
if (priority_val < 0 || priority_val >= NR_SCHED_QUEUES)
{
fatal("do_priority: priority %d out of range at %s:%d",
priority_val, cpe->file, cpe->line);
}
rs_start.rss_priority= priority_val;
}
PRIVATE void do_quantum(config_t *cpe)
{
int quantum_val;
char *check;
/* Process a quantum value */
if (cpe->next != NULL)
{
fatal("do_quantum: just one quantum value expected at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_SUBLIST)
{
fatal("do_quantum: unexpected sublist at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_STRING)
{
fatal("do_quantum: unexpected string at %s:%d",
cpe->file, cpe->line);
}
quantum_val= strtol(cpe->word, &check, 0);
if (check[0] != '\0')
{
fatal("do_quantum: bad quantum value '%s' at %s:%d",
cpe->word, cpe->file, cpe->line);
}
if (quantum_val <= 0)
{
fatal("do_quantum: quantum %d out of range at %s:%d",
quantum_val, cpe->file, cpe->line);
}
rs_start.rss_quantum= quantum_val;
}
PRIVATE void do_cpu(config_t *cpe)
{
int cpu;
char *check;
/* Process a quantum value */
if (cpe->next != NULL)
{
fatal("do_cpu: just one value expected at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_SUBLIST)
{
fatal("do_cpu: unexpected sublist at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_STRING)
{
fatal("do_cpu: unexpected string at %s:%d",
cpe->file, cpe->line);
}
cpu= strtol(cpe->word, &check, 0);
if (check[0] != '\0')
{
fatal("do_cpu: bad value '%s' at %s:%d",
cpe->word, cpe->file, cpe->line);
}
if (cpu < 0)
{
fatal("do_cpu: %d out of range at %s:%d",
cpu, cpe->file, cpe->line);
}
rs_start.rss_cpu= cpu;
}
PRIVATE void do_irq(config_t *cpe)
{
int irq;
int first;
char *check;
/* Process a list of IRQs */
first = TRUE;
for (; cpe; cpe= cpe->next)
{
if (cpe->flags & CFG_SUBLIST)
{
fatal("do_irq: unexpected sublist at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_STRING)
{
fatal("do_irq: unexpected string at %s:%d",
cpe->file, cpe->line);
}
/* No IRQ allowed? (default) */
if(!strcmp(cpe->word, KW_NONE)) {
if(!first || cpe->next) {
fatal("do_irq: %s keyword not allowed in list",
KW_NONE);
}
break;
}
/* All IRQs are allowed? */
if(!strcmp(cpe->word, KW_ALL)) {
if(!first || cpe->next) {
fatal("do_irq: %s keyword not allowed in list",
KW_ALL);
}
rs_start.rss_nr_irq = RSS_IO_ALL;
break;
}
/* Set single IRQs as specified in the configuration. */
irq= strtoul(cpe->word, &check, 0);
if (check[0] != '\0')
{
fatal("do_irq: bad irq '%s' at %s:%d",
cpe->word, cpe->file, cpe->line);
}
if (rs_start.rss_nr_irq >= RSS_NR_IRQ)
fatal("do_irq: too many IRQs (max %d)", RSS_NR_IRQ);
rs_start.rss_irq[rs_start.rss_nr_irq]= irq;
rs_start.rss_nr_irq++;
first = FALSE;
}
}
PRIVATE void do_io(config_t *cpe)
{
unsigned base, len;
int first;
char *check;
/* Process a list of I/O ranges */
first = TRUE;
for (; cpe; cpe= cpe->next)
{
if (cpe->flags & CFG_SUBLIST)
{
fatal("do_io: unexpected sublist at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_STRING)
{
fatal("do_io: unexpected string at %s:%d",
cpe->file, cpe->line);
}
/* No range allowed? (default) */
if(!strcmp(cpe->word, KW_NONE)) {
if(!first || cpe->next) {
fatal("do_io: %s keyword not allowed in list",
KW_NONE);
}
break;
}
/* All ranges are allowed? */
if(!strcmp(cpe->word, KW_ALL)) {
if(!first || cpe->next) {
fatal("do_io: %s keyword not allowed in list",
KW_ALL);
}
rs_start.rss_nr_io = RSS_IO_ALL;
break;
}
/* Set single ranges as specified in the configuration. */
base= strtoul(cpe->word, &check, 0x10);
len= 1;
if (check[0] == ':')
{
len= strtoul(check+1, &check, 0x10);
}
if (check[0] != '\0')
{
fatal("do_io: bad I/O range '%s' at %s:%d",
cpe->word, cpe->file, cpe->line);
}
if (rs_start.rss_nr_io >= RSS_NR_IO)
fatal("do_io: too many I/O ranges (max %d)", RSS_NR_IO);
rs_start.rss_io[rs_start.rss_nr_io].base= base;
rs_start.rss_io[rs_start.rss_nr_io].len= len;
rs_start.rss_nr_io++;
first = FALSE;
}
}
PRIVATE void do_pci_device(config_t *cpe)
{
u16_t vid, did;
char *check, *check2;
/* Process a list of PCI device IDs */
for (; cpe; cpe= cpe->next)
{
if (cpe->flags & CFG_SUBLIST)
{
fatal("do_pci_device: unexpected sublist at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_STRING)
{
fatal("do_pci_device: unexpected string at %s:%d",
cpe->file, cpe->line);
}
vid= strtoul(cpe->word, &check, 0x10);
if (check[0] == '/')
did= strtoul(check+1, &check2, 0x10);
if (check[0] != '/' || check2[0] != '\0')
{
fatal("do_pci_device: bad ID '%s' at %s:%d",
cpe->word, cpe->file, cpe->line);
}
if (rs_start.rss_nr_pci_id >= RS_NR_PCI_DEVICE)
{
fatal("do_pci_device: too many device IDs (max %d)",
RS_NR_PCI_DEVICE);
}
rs_start.rss_pci_id[rs_start.rss_nr_pci_id].vid= vid;
rs_start.rss_pci_id[rs_start.rss_nr_pci_id].did= did;
rs_start.rss_nr_pci_id++;
}
}
PRIVATE void do_pci_class(config_t *cpe)
{
u8_t baseclass, subclass, interface;
u32_t class_id, mask;
char *check;
/* Process a list of PCI device class IDs */
for (; cpe; cpe= cpe->next)
{
if (cpe->flags & CFG_SUBLIST)
{
fatal("do_pci_device: unexpected sublist at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_STRING)
{
fatal("do_pci_device: unexpected string at %s:%d",
cpe->file, cpe->line);
}
baseclass= strtoul(cpe->word, &check, 0x10);
subclass= 0;
interface= 0;
mask= 0xff0000;
if (check[0] == '/')
{
subclass= strtoul(check+1, &check, 0x10);
mask= 0xffff00;
if (check[0] == '/')
{
interface= strtoul(check+1, &check, 0x10);
mask= 0xffffff;
}
}
if (check[0] != '\0')
{
fatal("do_pci_class: bad class ID '%s' at %s:%d",
cpe->word, cpe->file, cpe->line);
}
class_id= (baseclass << 16) | (subclass << 8) | interface;
if (rs_start.rss_nr_pci_class >= RS_NR_PCI_CLASS)
{
fatal("do_pci_class: too many class IDs (max %d)",
RS_NR_PCI_CLASS);
}
rs_start.rss_pci_class[rs_start.rss_nr_pci_class].pciclass=
class_id;
rs_start.rss_pci_class[rs_start.rss_nr_pci_class].mask= mask;
rs_start.rss_nr_pci_class++;
}
}
PRIVATE void do_pci(config_t *cpe)
{
if (cpe == NULL)
return; /* Empty PCI statement */
if (cpe->flags & CFG_SUBLIST)
{
fatal("do_pci: unexpected sublist at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_STRING)
{
fatal("do_pci: unexpected string at %s:%d",
cpe->file, cpe->line);
}
if (strcmp(cpe->word, KW_DEVICE) == 0)
{
do_pci_device(cpe->next);
return;
}
if (strcmp(cpe->word, KW_CLASS) == 0)
{
do_pci_class(cpe->next);
return;
}
fatal("do_pci: unexpected word '%s' at %s:%d",
cpe->word, cpe->file, cpe->line);
}
PRIVATE void do_ipc(config_t *cpe)
{
char *list, *word;
char *word_all = RSS_IPC_ALL;
char *word_all_sys = RSS_IPC_ALL_SYS;
size_t listsize, wordlen;
int first;
list= NULL;
listsize= 1;
list= malloc(listsize);
if (list == NULL)
fatal("do_ipc: unable to malloc %d bytes", listsize);
list[0]= '\0';
/* Process a list of process names that are allowed to be
* contacted
*/
first = TRUE;
for (; cpe; cpe= cpe->next)
{
if (cpe->flags & CFG_SUBLIST)
{
fatal("do_ipc: unexpected sublist at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_STRING)
{
fatal("do_ipc: unexpected string at %s:%d",
cpe->file, cpe->line);
}
word = cpe->word;
/* All (system) ipc targets are allowed? */
if(!strcmp(word, KW_ALL) || !strcmp(word, KW_ALL_SYS)) {
if(!first || cpe->next) {
fatal("do_ipc: %s keyword not allowed in list",
word);
}
word = !strcmp(word, KW_ALL) ? word_all : word_all_sys;
}
wordlen= strlen(word);
listsize += 1 + wordlen;
list= realloc(list, listsize);
if (list == NULL)
{
fatal("do_ipc: unable to realloc %d bytes",
listsize);
}
strcat(list, " ");
strcat(list, word);
first = FALSE;
}
#if 0
printf("do_ipc: got list '%s'\n", list);
#endif
if (req_ipc)
fatal("do_ipc: req_ipc is set");
req_ipc= list;
}
struct
{
char *label;
int call_nr;
} vm_table[] =
{
{ "EXIT", VM_EXIT },
{ "FORK", VM_FORK },
{ "BRK", VM_BRK },
{ "EXEC_NEWMEM", VM_EXEC_NEWMEM },
{ "PUSH_SIG", VM_PUSH_SIG },
{ "WILLEXIT", VM_WILLEXIT },
{ "ADDDMA", VM_ADDDMA },
{ "DELDMA", VM_DELDMA },
{ "GETDMA", VM_GETDMA },
{ "REMAP", VM_REMAP },
{ "SHM_UNMAP", VM_SHM_UNMAP },
{ "GETPHYS", VM_GETPHYS },
{ "GETREF", VM_GETREF },
{ "RS_SET_PRIV", VM_RS_SET_PRIV },
{ "QUERY_EXIT", VM_QUERY_EXIT },
{ "NOTIFY_SIG", VM_NOTIFY_SIG },
{ "INFO", VM_INFO },
{ "RS_UPDATE", VM_RS_UPDATE },
{ "RS_MEMCTL", VM_RS_MEMCTL },
{ NULL, 0 },
};
PRIVATE void do_vm(config_t *cpe)
{
int i, first;
first = TRUE;
for (; cpe; cpe = cpe->next)
{
if (cpe->flags & CFG_SUBLIST)
{
fatal("do_vm: unexpected sublist at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_STRING)
{
fatal("do_vm: unexpected string at %s:%d",
cpe->file, cpe->line);
}
/* Only basic calls allowed? (default). */
if(!strcmp(cpe->word, KW_BASIC)) {
if(!first || cpe->next) {
fatal("do_vm: %s keyword not allowed in list",
KW_NONE);
}
break;
}
/* No calls allowed? */
if(!strcmp(cpe->word, KW_NONE)) {
if(!first || cpe->next) {
fatal("do_vm: %s keyword not allowed in list",
KW_NONE);
}
rs_start.rss_flags &= ~RSS_VM_BASIC_CALLS;
break;
}
/* All calls are allowed? */
if(!strcmp(cpe->word, KW_ALL)) {
if(!first || cpe->next) {
fatal("do_vm: %s keyword not allowed in list",
KW_ALL);
}
for (i = 0; i < NR_VM_CALLS; i++)
SET_BIT(rs_start.rss_vm, i);
break;
}
/* Set single calls as specified in the configuration. */
for (i = 0; vm_table[i].label != NULL; i++)
if (!strcmp(cpe->word, vm_table[i].label))
break;
if (vm_table[i].label == NULL)
fatal("do_vm: unknown call '%s' at %s:%d",
cpe->word, cpe->file, cpe->line);
SET_BIT(rs_start.rss_vm, vm_table[i].call_nr - VM_RQ_BASE);
first = FALSE;
}
}
struct
{
char *label;
int call_nr;
} system_tab[]=
{
{ "PRIVCTL", SYS_PRIVCTL },
{ "TRACE", SYS_TRACE },
{ "KILL", SYS_KILL },
{ "SEGCTL", SYS_SEGCTL },
{ "UMAP", SYS_UMAP },
{ "VIRCOPY", SYS_VIRCOPY },
{ "PHYSCOPY", SYS_PHYSCOPY },
{ "IRQCTL", SYS_IRQCTL },
{ "INT86", SYS_INT86 },
{ "DEVIO", SYS_DEVIO },
{ "SDEVIO", SYS_SDEVIO },
{ "VDEVIO", SYS_VDEVIO },
{ "ABORT", SYS_ABORT },
{ "IOPENABLE", SYS_IOPENABLE },
{ "READBIOS", SYS_READBIOS },
{ "STIME", SYS_STIME },
{ "VMCTL", SYS_VMCTL },
{ NULL, 0 }
};
PRIVATE void do_system(config_t *cpe)
{
int i, first;
/* Process a list of 'system' calls that are allowed */
first = TRUE;
for (; cpe; cpe= cpe->next)
{
if (cpe->flags & CFG_SUBLIST)
{
fatal("do_system: unexpected sublist at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_STRING)
{
fatal("do_system: unexpected string at %s:%d",
cpe->file, cpe->line);
}
/* Only basic calls allowed? (default). */
if(!strcmp(cpe->word, KW_BASIC)) {
if(!first || cpe->next) {
fatal("do_system: %s keyword not allowed in list",
KW_NONE);
}
break;
}
/* No calls allowed? */
if(!strcmp(cpe->word, KW_NONE)) {
if(!first || cpe->next) {
fatal("do_system: %s keyword not allowed in list",
KW_NONE);
}
rs_start.rss_flags &= ~RSS_SYS_BASIC_CALLS;
break;
}
/* All calls are allowed? */
if(!strcmp(cpe->word, KW_ALL)) {
if(!first || cpe->next) {
fatal("do_system: %s keyword not allowed in list",
KW_ALL);
}
for (i = 0; i < NR_SYS_CALLS; i++)
SET_BIT(rs_start.rss_system, i);
break;
}
/* Set single calls as specified in the configuration. */
for (i = 0; system_tab[i].label != NULL; i++)
if (!strcmp(cpe->word, system_tab[i].label))
break;
if (system_tab[i].label == NULL)
fatal("do_system: unknown call '%s' at %s:%d",
cpe->word, cpe->file, cpe->line);
SET_BIT(rs_start.rss_system, system_tab[i].call_nr - KERNEL_CALL);
first = FALSE;
}
}
PRIVATE void do_control(config_t *cpe)
{
int nr_control = 0;
/* Process a list of 'control' labels. */
for (; cpe; cpe= cpe->next)
{
if (cpe->flags & CFG_SUBLIST)
{
fatal("do_control: unexpected sublist at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_STRING)
{
fatal("do_control: unexpected string at %s:%d",
cpe->file, cpe->line);
}
if (nr_control >= RS_NR_CONTROL)
{
fatal(
"do_control: RS_NR_CONTROL is too small (%d needed)",
nr_control+1);
}
rs_start.rss_control[nr_control].l_addr = (char*) cpe->word;
rs_start.rss_control[nr_control].l_len = strlen(cpe->word);
rs_start.rss_nr_control = ++nr_control;
}
}
PRIVATE void do_service(config_t *cpe, config_t *config)
{
config_t *cp;
/* At this point we expect one sublist that contains the varios
* resource allocations
*/
if (!(cpe->flags & CFG_SUBLIST))
{
fatal("do_service: expected list at %s:%d",
cpe->file, cpe->line);
}
if (cpe->next != NULL)
{
cpe= cpe->next;
fatal("do_service: expected end of list at %s:%d",
cpe->file, cpe->line);
}
cpe= cpe->list;
/* Process the list */
for (cp= cpe; cp; cp= cp->next)
{
if (!(cp->flags & CFG_SUBLIST))
{
fatal("do_service: expected list at %s:%d",
cp->file, cp->line);
}
cpe= cp->list;
if ((cpe->flags & CFG_STRING) || (cpe->flags & CFG_SUBLIST))
{
fatal("do_service: expected word at %s:%d",
cpe->file, cpe->line);
}
if (strcmp(cpe->word, KW_CLASS) == 0)
{
do_class(cpe->next, config);
continue;
}
if (strcmp(cpe->word, KW_UID) == 0)
{
do_uid(cpe->next);
continue;
}
if (strcmp(cpe->word, KW_SIGMGR) == 0)
{
do_sigmgr(cpe->next);
continue;
}
if (strcmp(cpe->word, KW_SCHEDULER) == 0)
{
do_scheduler(cpe->next);
continue;
}
if (strcmp(cpe->word, KW_PRIORITY) == 0)
{
do_priority(cpe->next);
continue;
}
if (strcmp(cpe->word, KW_QUANTUM) == 0)
{
do_quantum(cpe->next);
continue;
}
if (strcmp(cpe->word, KW_CPU) == 0)
{
do_cpu(cpe->next);
continue;
}
if (strcmp(cpe->word, KW_IRQ) == 0)
{
do_irq(cpe->next);
continue;
}
if (strcmp(cpe->word, KW_IO) == 0)
{
do_io(cpe->next);
continue;
}
if (strcmp(cpe->word, KW_PCI) == 0)
{
do_pci(cpe->next);
continue;
}
if (strcmp(cpe->word, KW_SYSTEM) == 0)
{
do_system(cpe->next);
continue;
}
if (strcmp(cpe->word, KW_IPC) == 0)
{
do_ipc(cpe->next);
continue;
}
if (strcmp(cpe->word, KW_VM) == 0)
{
do_vm(cpe->next);
continue;
}
if (strcmp(cpe->word, KW_CONTROL) == 0)
{
do_control(cpe->next);
continue;
}
}
}
PRIVATE int do_config(char *label, char *filename)
{
config_t *config, *cp, *cpe;
config= config_read(filename, 0, NULL);
if (config == NULL)
{
/* config file read failed. */
return 1;
}
/* Find an entry for our service */
for (cp= config; cp; cp= cp->next)
{
if (!(cp->flags & CFG_SUBLIST))
{
fatal("do_config: expected list at %s:%d",
cp->file, cp->line);
}
cpe= cp->list;
if ((cpe->flags & CFG_STRING) || (cpe->flags & CFG_SUBLIST))
{
fatal("do_config: expected word at %s:%d",
cpe->file, cpe->line);
}
/* At this place we expect the word KW_SERVICE */
if (strcmp(cpe->word, KW_SERVICE) != 0)
fatal("do_config: exected word '%S' at %s:%d",
KW_SERVICE, cpe->file, cpe->line);
cpe= cpe->next;
if ((cpe->flags & CFG_STRING) || (cpe->flags & CFG_SUBLIST))
{
fatal("do_config: expected word at %s:%d",
cpe->file, cpe->line);
}
/* At this place we expect the name of the service. */
if (strcmp(cpe->word, label) == 0)
break;
}
if (cp == NULL)
{
fprintf(stderr, "service: service '%s' not found in '%s'\n",
label, filename);
exit(1);
}
cpe= cpe->next;
do_service(cpe, config);
/* config file read ok. */
return 0;
}
/* Main program.
*/
PUBLIC int main(int argc, char **argv)
{
message m;
int result = EXIT_SUCCESS;
int request;
char *progname = NULL;
struct passwd *pw;
/* Verify and parse the command line arguments. All arguments are checked
* here. If an error occurs, the problem is reported and exit(2) is called.
* all needed parameters to perform the request are extracted and stored
* global variables.
*/
request = parse_arguments(argc, argv);
/* Arguments seem fine. Try to perform the request. Only valid requests
* should end up here. The default is used for not yet supported requests.
*/
result = OK;
switch(request) {
case RS_UPDATE:
m.RS_LU_STATE = req_lu_state;
m.RS_LU_PREPARE_MAXTIME = req_lu_maxtime;
/* fall through */
case RS_UP:
case RS_EDIT:
/* Build space-separated command string to be passed to RS server. */
progname = strrchr(req_path, '/');
assert(progname); /* an absolute path was required */
progname++; /* skip last slash */
strcpy(command, req_path);
command[strlen(req_path)] = ' ';
strcpy(command+strlen(req_path)+1, req_args);
rs_start.rss_cmd= command;
rs_start.rss_cmdlen= strlen(command);
rs_start.rss_major= req_major;
rs_start.rss_dev_style= req_dev_style;
rs_start.rss_period= req_period;
rs_start.rss_script= req_script;
if(req_label) {
rs_start.rss_label.l_addr = req_label;
rs_start.rss_label.l_len = strlen(req_label);
} else {
rs_start.rss_label.l_addr = progname;
rs_start.rss_label.l_len = strlen(progname);
}
if (req_script)
rs_start.rss_scriptlen= strlen(req_script);
else
rs_start.rss_scriptlen= 0;
pw= getpwnam(SERVICE_LOGIN);
if (pw == NULL)
fatal("no passwd file entry for '%s'", SERVICE_LOGIN);
rs_start.rss_uid= pw->pw_uid;
rs_start.rss_sigmgr= DSRV_SM;
rs_start.rss_scheduler= DSRV_SCH;
rs_start.rss_priority= DSRV_Q;
rs_start.rss_quantum= DSRV_QT;
rs_start.rss_cpu = DSRV_CPU;
if (req_config) {
int config_fail = 0;
assert(progname);
if(custom_config_file) {
config_fail = do_config(progname, req_config);
} else {
char *specificconfig;
if(asprintf(&specificconfig, "%s/%s", _PATH_SYSTEM_CONF_DIR,
progname) < 0) {
errx(1, "no memory");
}
/* Try specific config filename first,
* and only if it fails, the global system one.
*/
config_fail =
do_config(progname, specificconfig) &&
do_config(progname, req_config);
}
if(config_fail) {
fprintf(stderr, "config_read failed for %s\n", progname);
exit(1);
}
}
assert(rs_start.rss_priority < NR_SCHED_QUEUES);
assert(rs_start.rss_quantum > 0);
if (req_ipc)
{
rs_start.rss_ipc= req_ipc+1; /* Skip initial space */
rs_start.rss_ipclen= strlen(rs_start.rss_ipc);
}
else
{
char *default_ipc = RSS_IPC_ALL_SYS;
rs_start.rss_ipc= default_ipc;
rs_start.rss_ipclen= strlen(default_ipc);
}
m.RS_CMD_ADDR = (char *) &rs_start;
break;
case RS_DOWN:
case RS_REFRESH:
case RS_RESTART:
case RS_CLONE:
m.RS_CMD_ADDR = req_label;
m.RS_CMD_LEN = strlen(req_label);
break;
case RS_SHUTDOWN:
break;
default:
print_usage(argv[ARG_NAME], "request is not yet supported");
result = EGENERIC;
}
/* Build request message and send the request. */
if(result == OK) {
if (_syscall(RS_PROC_NR, request, &m) == -1)
failure();
result = m.m_type;
}
return(result);
}
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