fd3bf3a364
is useful for low memory systems. PR: 36418 Submitted by: Forrest W. Christian
283 lines
6.8 KiB
C
283 lines
6.8 KiB
C
/*
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* Copyright (c) 1995 Andrew McRae. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <sys/stat.h>
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#define EXTERN
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#include "cardd.h"
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char *config_file = "/etc/defaults/pccard.conf";
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static char *pid_file = "/var/run/pccardd.pid";
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/*
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* pathname of UNIX-domain socket
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*/
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static char *socket_name = "/var/tmp/.pccardd";
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static char *sock = 0;
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static int server_sock;
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/* SIGHUP signal handler */
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static void
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restart(void)
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{
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bitstr_t bit_decl(io_inuse, IOPORTS);
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bitstr_t bit_decl(mem_inuse, MEMBLKS);
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int irq_inuse[16];
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int i;
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struct sockaddr_un sun;
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bit_nclear(io_inuse, 0, IOPORTS-1);
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bit_nclear(mem_inuse, 0, MEMBLKS-1);
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bzero(irq_inuse, sizeof(irq_inuse));
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/* compare the initial and current state of resource pool */
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for (i = 0; i < IOPORTS; i++) {
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if (bit_test(io_init, i) == 1 && bit_test(io_avail, i) == 0) {
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if (debug_level >= 1) {
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logmsg("io 0x%x seems to be in use\n", i);
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}
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bit_set(io_inuse, i);
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}
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}
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for (i = 0; i < MEMBLKS; i++) {
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if (bit_test(mem_init, i) == 1 && bit_test(mem_avail, i) == 0) {
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if (debug_level >= 1) {
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logmsg("mem 0x%x seems to be in use\n", i);
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}
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bit_set(mem_inuse, i);
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}
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}
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for (i = 0; i < 16; i++) {
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if (irq_init[i] == 1 && pool_irq[i] == 0) {
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if (debug_level >= 1) {
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logmsg("irq %d seems to be in use\n", i);
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}
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irq_inuse[i] = 1;
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}
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}
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readfile(config_file);
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/* reflect used resources to managed resource pool */
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for (i = 0; i < IOPORTS; i++) {
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if (bit_test(io_inuse, i) == 1) {
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bit_clear(io_avail, i);
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}
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}
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for (i = 0; i < MEMBLKS; i++) {
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if (bit_test(mem_inuse, i) == 1) {
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bit_clear(mem_avail, i);
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}
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}
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for (i = 0; i < 16; i++) {
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if (irq_inuse[i] == 1) {
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pool_irq[i] = 0;
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}
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}
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close(server_sock);
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if ((server_sock = socket(PF_LOCAL, SOCK_DGRAM, 0)) < 0)
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die("socket failed");
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bzero(&sun, sizeof(sun));
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sun.sun_family = AF_UNIX;
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if (sock) {
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socket_name = sock;
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}
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strcpy(sun.sun_path, socket_name);
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slen = SUN_LEN(&sun);
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(void)unlink(socket_name);
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if (bind(server_sock, (struct sockaddr *) & sun, slen) < 0)
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die("bind failed");
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chown(socket_name, 0, 5); /* XXX - root.operator */
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chmod(socket_name, 0660);
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set_socket(server_sock);
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}
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/* SIGTERM/SIGINT signal handler */
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static void
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term(int sig)
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{
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logmsg("pccardd terminated: signal %d received", sig);
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(void)unlink(pid_file);
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exit(0);
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}
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static void
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write_pid()
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{
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FILE *fp = fopen(pid_file, "w");
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if (fp) {
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fprintf(fp, "%d\n", getpid());
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fclose(fp);
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}
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}
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int doverbose = 0;
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/*
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* mainline code for cardd
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*/
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int
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main(int argc, char *argv[])
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{
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struct slot *sp;
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int count, dodebug = 0;
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int probeonly = 0;
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int delay = 0;
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int irq_arg[16];
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int irq_specified = 0;
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int i;
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struct sockaddr_un sun;
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#define COM_OPTS ":Idf:i:s:vxz"
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bzero(irq_arg, sizeof(irq_arg));
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use_kern_irq = 1;
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debug_level = 0;
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pccard_init_sleep = 5000000;
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cards = last_card = 0;
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while ((count = getopt(argc, argv, COM_OPTS)) != -1) {
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switch (count) {
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case 'I':
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use_kern_irq = 0;
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break;
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case 'd':
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setbuf(stdout, 0);
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setbuf(stderr, 0);
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dodebug = 1;
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break;
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case 'v':
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doverbose = 1;
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break;
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case 'f':
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config_file = optarg;
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break;
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case 'i':
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/* configure available irq */
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if (sscanf(optarg, "%d", &i) != 1) {
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fprintf(stderr, "%s: -i number\n", argv[0]);
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exit(1);
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}
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irq_arg[i] = 1;
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irq_specified = 1;
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break;
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case 's':
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sock = optarg;
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break;
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case 'z':
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delay = 1;
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break;
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case ':':
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die("no config file argument");
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break;
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case '?':
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die("illegal option");
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break;
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}
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}
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#ifdef DEBUG
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dodebug = 1;
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#endif
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io_avail = bit_alloc(IOPORTS); /* Only supports ISA ports */
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io_init = bit_alloc(IOPORTS);
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/* Mem allocation done in MEMUNIT units. */
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mem_avail = bit_alloc(MEMBLKS);
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mem_init = bit_alloc(MEMBLKS);
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readfile(config_file);
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if (irq_specified) {
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bcopy(irq_arg, pool_irq, sizeof(irq_arg));
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bcopy(irq_arg, irq_init, sizeof(irq_arg));
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}
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if (doverbose)
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dump_config_file();
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log_setup();
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if (!dodebug && !delay && !probeonly)
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if (daemon(0, 0))
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die("fork failed");
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slots = readslots();
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if (slots == 0)
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die("no PC-CARD slots");
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if (probeonly)
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exit(0);
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if (delay)
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if (daemon(0, 0))
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die("fork failed");
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logmsg("pccardd started", NULL);
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write_pid();
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if ((server_sock = socket(PF_LOCAL, SOCK_DGRAM, 0)) < 0)
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die("socket failed");
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bzero(&sun, sizeof(sun));
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sun.sun_family = AF_UNIX;
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if (sock) {
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socket_name = sock;
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}
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strcpy(sun.sun_path, socket_name);
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slen = SUN_LEN(&sun);
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(void)unlink(socket_name);
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if (bind(server_sock, (struct sockaddr *) & sun, slen) < 0)
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die("bind failed");
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chown(socket_name, 0, 5); /* XXX - root.operator */
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chmod(socket_name, 0660);
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set_socket(server_sock);
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(void)signal(SIGINT, dodebug ? term : SIG_IGN);
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(void)signal(SIGTERM, term);
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(void)signal(SIGHUP, (void (*)(int))restart);
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for (;;) {
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fd_set rmask, emask;
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FD_ZERO(&emask);
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FD_ZERO(&rmask);
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for (sp = slots; sp; sp = sp->next)
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FD_SET(sp->fd, &emask);
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FD_SET(server_sock, &rmask);
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count = select(32, &rmask, 0, &emask, 0);
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if (count == -1) {
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logerr("select");
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continue;
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}
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if (count) {
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for (sp = slots; sp; sp = sp->next)
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if (FD_ISSET(sp->fd, &emask))
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slot_change(sp);
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if (FD_ISSET(server_sock, &rmask))
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process_client();
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}
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}
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}
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