#ifndef lint
static char sccsid[] __attribute__((used)) = "@(#)mkswapconf.c 5.6 (Berkeley) 6/18/88";
#endif
#include "config.h"
#include <stdio.h>
#include <unistd.h>
#include <ctype.h>
struct file_list *do_swap(struct file_list *fl);
void initdevtable(void);
void
swapconf(void)
{
register struct file_list *fl;
fl = conf_list;
while (fl) {
if (fl->f_type != SYSTEMSPEC) {
fl = fl->f_next;
continue;
}
fl = do_swap(fl);
}
}
struct file_list *
do_swap(struct file_list *fl)
{
FILE *fp;
char swapname[80];
register struct file_list *swap;
dev_t dev;
if (eq(fl->f_fn, "generic")) {
fl = fl->f_next;
return (fl->f_next);
}
if (machine == MACHINE_MMAX) {
printf("Error: Multimax must specify swap generic only.\n");
exit(1);
}
(void) sprintf(swapname, "swap%s.c", fl->f_fn);
fp = fopen(path(swapname), "w");
if (fp == 0) {
perror(path(swapname));
exit(1);
}
fprintf(fp, "#include <sys/param.h>\n");
fprintf(fp, "#include <sys/conf.h>\n");
fprintf(fp, "\n");
swap = fl->f_next;
if (swap == 0 || swap->f_type != SWAPSPEC) {
(void) unlink(path(swapname));
fclose(fp);
return (swap);
}
fprintf(fp, "dev_t\trootdev = makedev(%d, %d);\n",
major(fl->f_rootdev), minor(fl->f_rootdev));
fprintf(fp, "dev_t\targdev = makedev(%d, %d);\n",
major(fl->f_argdev), minor(fl->f_argdev));
fprintf(fp, "dev_t\tdumpdev = makedev(%d, %d);\n",
major(fl->f_dumpdev), minor(fl->f_dumpdev));
fprintf(fp, "\n");
fprintf(fp, "struct\tswdevt swdevt[] = {\n");
do {
dev = swap->f_swapdev;
fprintf(fp, "\t{ makedev(%d, %d),\t0,\t%d },\t/* %s */\n",
major(dev), minor(dev), swap->f_swapsize, swap->f_fn);
swap = swap->f_next;
} while (swap && swap->f_type == SWAPSPEC);
fprintf(fp, "\t{ 0, 0, 0 }\n");
fprintf(fp, "};\n");
if (machine == MACHINE_MIPSY || machine == MACHINE_MIPS) {
fprintf(fp, "\nsetconf()\n");
fprintf(fp, "{\n");
fprintf(fp, "\t/* resolve reference for non-generic kernels */\n");
fprintf(fp, "}\n");
}
fclose(fp);
return (swap);
}
static int devtablenotread = 1;
static struct devdescription {
char *dev_name;
int dev_major;
struct devdescription *dev_next;
} *devtable;
dev_t
nametodev(char *name, int defunit, char defpartition)
{
char *cp, partition;
int unit;
register struct devdescription *dp;
cp = name;
if (cp == 0) {
fprintf(stderr, "config: internal error, nametodev\n");
exit(1);
}
while (*cp && !isdigit(*cp))
cp++;
unit = *cp ? atoi(cp) : defunit;
if (unit < 0 || unit > 31) {
fprintf(stderr,
"config: %s: invalid device specification, unit out of range\n", name);
unit = defunit;
}
if (*cp) {
*cp++ = '\0';
while (*cp && isdigit(*cp))
cp++;
}
partition = *cp ? *cp : defpartition;
if (partition < 'a' || partition > 'h') {
fprintf(stderr,
"config: %c: invalid device specification, bad partition\n", *cp);
partition = defpartition;
}
if (devtablenotread)
initdevtable();
for (dp = devtable; dp->dev_next; dp = dp->dev_next)
if (eq(name, dp->dev_name))
break;
if (dp == 0) {
fprintf(stderr, "config: %s: unknown device\n", name);
return (NODEV);
}
return (makedev(dp->dev_major, (unit << DEV_SHIFT) + (partition - 'a')));
}
char *
devtoname(dev_t dev)
{
char buf[80];
register struct devdescription *dp;
if (devtablenotread)
initdevtable();
for (dp = devtable; dp->dev_next; dp = dp->dev_next)
if (major(dev) == dp->dev_major)
break;
if (dp == 0)
dp = devtable;
(void) sprintf(buf, "%s%d%c", dp->dev_name,
minor(dev) >> DEV_SHIFT, (minor(dev) & DEV_MASK) + 'a');
return (ns(buf));
}
void
initdevtable(void)
{
char buf[BUFSIZ];
char line[BUFSIZ];
int maj;
register struct devdescription **dp = &devtable;
FILE *fp;
(void) sprintf(buf, "%s/devices.%s", config_directory, machinename);
fp = fopenp(VPATH, buf, line, "r");
if (fp == NULL) {
fprintf(stderr, "config: can't open %s\n", buf);
exit(1);
}
while (fgets(line, BUFSIZ, fp) != 0) {
if (*line == '#' || *line == '\n')
continue;
if (sscanf(line, "%s\t%d\n", buf, &maj) != 2)
break;
*dp = (struct devdescription *)malloc(sizeof (**dp));
(*dp)->dev_name = ns(buf);
(*dp)->dev_major = maj;
dp = &(*dp)->dev_next;
}
*dp = 0;
fclose(fp);
devtablenotread = 0;
}