ref: a1c3c34c70431447a89fbe08c3475dbfaee7b672
dir: /sys/src/cmd/scat/header.c/
#include <u.h>
#include <libc.h>
#include <bio.h>
#include "sky.h"
#define JUKEFS "tcp!jukefs" /* dial string for jukebox; was il!jukefs */
struct
{
char name[9];
char offset;
} Hproto[] =
{
"ppo1", Pppo1,
"ppo2", Pppo2,
"ppo3", Pppo3,
"ppo4", Pppo4,
"ppo5", Pppo5,
"ppo6", Pppo6,
"amdx1", Pamdx1,
"amdx2", Pamdx2,
"amdx3", Pamdx3,
"amdx4", Pamdx4,
"amdx5", Pamdx5,
"amdx6", Pamdx6,
"amdx7", Pamdx7,
"amdx8", Pamdx8,
"amdx9", Pamdx9,
"amdx10", Pamdx10,
"amdx11", Pamdx11,
"amdx12", Pamdx12,
"amdx13", Pamdx13,
"amdx14", Pamdx14,
"amdx15", Pamdx15,
"amdx16", Pamdx16,
"amdx17", Pamdx17,
"amdx18", Pamdx18,
"amdx19", Pamdx19,
"amdx20", Pamdx20,
"amdy1", Pamdy1,
"amdy2", Pamdy2,
"amdy3", Pamdy3,
"amdy4", Pamdy4,
"amdy5", Pamdy5,
"amdy6", Pamdy6,
"amdy7", Pamdy7,
"amdy8", Pamdy8,
"amdy9", Pamdy9,
"amdy10", Pamdy10,
"amdy11", Pamdy11,
"amdy12", Pamdy12,
"amdy13", Pamdy13,
"amdy14", Pamdy14,
"amdy15", Pamdy15,
"amdy16", Pamdy16,
"amdy17", Pamdy17,
"amdy18", Pamdy18,
"amdy19", Pamdy19,
"amdy20", Pamdy20,
"pltscale", Ppltscale,
"xpixelsz", Pxpixelsz,
"ypixelsz", Pypixelsz,
"pltrah", Ppltrah,
"pltram", Ppltram,
"pltras", Ppltras,
"pltdecd", Ppltdecd,
"pltdecm", Ppltdecm,
"pltdecs", Ppltdecs,
};
Header*
getheader(char *rgn)
{
char rec[81], name[81], value[81];
char *p;
Biobuf *bin;
Header hd, *h;
int i, j, decsn, dss;
dss = 0;
sprint(rec, "/lib/sky/dssheaders/%s.hhh", rgn);
bin = Bopen(rec, OREAD);
if(bin == 0) {
dss = 102;
sprint(rec, "/n/juke/dss/dss.102/headers/%s.hhh", rgn);
bin = Bopen(rec, OREAD);
}
if(bin == 0) {
dss = 61;
sprint(rec, "/n/juke/dss/dss.061/headers/%s.hhh", rgn);
bin = Bopen(rec, OREAD);
}
if(bin == 0) {
fprint(2, "cannot open %s\n", rgn);
exits("file");
}
if(debug)
Bprint(&bout, "reading %s\n", rec);
if(dss)
Bprint(&bout, "warning: reading %s from jukebox\n", rec);
memset(&hd, 0, sizeof(hd));
j = 0;
decsn = 0;
for(;;) {
if(dss) {
if(Bread(bin, rec, 80) != 80)
break;
rec[80] = 0;
} else {
p = Brdline(bin, '\n');
if(p == 0)
break;
p[Blinelen(bin)-1] = 0;
strcpy(rec, p);
}
p = strchr(rec, '/');
if(p)
*p = 0;
p = strchr(rec, '=');
if(p == 0)
continue;
*p++ = 0;
if(getword(name, rec) == 0)
continue;
if(getword(value, p) == 0)
continue;
if(strcmp(name, "pltdecsn") == 0) {
if(strchr(value, '-'))
decsn = 1;
continue;
}
for(i=0; i<nelem(Hproto); i++) {
j++;
if(j >= nelem(Hproto))
j = 0;
if(strcmp(name, Hproto[j].name) == 0) {
hd.param[Hproto[j].offset] = atof(value);
break;
}
}
}
Bterm(bin);
hd.param[Ppltra] = RAD(hd.param[Ppltrah]*15 +
hd.param[Ppltram]/4 + hd.param[Ppltras]/240);
hd.param[Ppltdec] = RAD(hd.param[Ppltdecd] +
hd.param[Ppltdecm]/60 + hd.param[Ppltdecs]/3600);
if(decsn)
hd.param[Ppltdec] = -hd.param[Ppltdec];
hd.amdflag = 0;
for(i=Pamdx1; i<=Pamdx20; i++)
if(hd.param[i] != 0) {
hd.amdflag = 1;
break;
}
h = malloc(sizeof(*h));
*h = hd;
return h;
}
void
getplates(void)
{
char rec[81], *q;
Plate *p;
Biobuf *bin;
int c, i, dss;
dss = 0;
sprint(rec, "/lib/sky/dssheaders/lo_comp.lis");
bin = Bopen(rec, OREAD);
if(bin == 0) {
dss = 102;
sprint(rec, "%s/headers/lo_comp.lis", dssmount(dss));
bin = Bopen(rec, OREAD);
}
if(bin == 0) {
dss = 61;
sprint(rec, "%s/headers/lo_comp.lis", dssmount(dss));
bin = Bopen(rec, OREAD);
}
if(bin == 0) {
fprint(2, "can't open lo_comp.lis; try 9fs juke\n");
exits("open");
}
if(debug)
Bprint(&bout, "reading %s\n", rec);
if(dss)
Bprint(&bout, "warning: reading %s from jukebox\n", rec);
for(nplate=0;;) {
if(dss) {
if(Bread(bin, rec, 80) != 80)
break;
rec[80] = 0;
} else {
q = Brdline(bin, '\n');
if(q == 0)
break;
q[Blinelen(bin)-1] = 0;
strcpy(rec, q);
}
if(rec[0] == '#')
continue;
if(nplate < nelem(plate)) {
p = &plate[nplate];
memmove(p->rgn, rec+0, 5);
if(p->rgn[4] == ' ')
p->rgn[4] = 0;
for(i=0; c=p->rgn[i]; i++)
if(c >= 'A' && c <= 'Z')
p->rgn[i] += 'a'-'A';
p->ra = RAD(atof(rec+12)*15 +
atof(rec+15)/4 +
atof(rec+18)/240);
p->dec = RAD(atof(rec+26) +
atof(rec+29)/60 +
atof(rec+32)/3600);
if(rec[25] == '-')
p->dec = -p->dec;
p->disk = atoi(rec+53);
if(p->disk == 0)
continue;
}
nplate++;
}
Bterm(bin);
if(nplate >= nelem(plate))
fprint(2, "nplate too small %d %d\n", nelem(plate), nplate);
if(debug)
Bprint(&bout, "%d plates\n", nplate);
}
char*
dssmount(int dskno)
{
char dssname[100];
int s1, s2, count;
static int sdiskno = -1;
if(sdiskno == dskno)
goto out;
count = 0;
loop:
unmount(nil, "/n/njuke");
unmount(nil, "/n/dss");
sprint(dssname, "/n/njuke/juke/dss/dss.%.3d", dskno);
/*
* start nfs jukebox server
*/
s1 = open("/srv/" JUKEFS, ORDWR);
if(s1 < 0) {
if(fork() == 0) {
execl("/bin/srv", "srv", "-q", JUKEFS, nil);
exits(0);
}
waitpid();
s1 = open("/srv/" JUKEFS, ORDWR);
if(s1 < 0) {
Bprint(&bout, "can't open /srv/%s: %r\n", JUKEFS);
goto out;
}
}
/*
* mount nfs jukebox server
*/
if(mount(s1, -1, "/n/njuke", 0, "") == -1) {
close(s1);
Bprint(&bout, "\"mount /srv/%s /n/juke\" failed: %r\n", JUKEFS);
goto out;
}
/*
* run 9660 server
*/
s2 = open("/srv/9660", ORDWR);
if(s2 < 0) {
if(fork() == 0) {
execl("/bin/9660srv", "9660srv", nil);
exits(0);
}
waitpid();
s2 = open("/srv/9660", ORDWR);
if(s2 < 0) {
Bprint(&bout, "can't open /srv/9660: %r\n");
goto out;
}
}
/*
* mount 9660 server
*/
if(mount(s2, -1, "/n/dss", 0, dssname) == -1) {
close(s2);
if(count == 0) {
// do it again so /n/njuke is in 9660's namespace
remove("/srv/9660");
remove("/srv/" JUKEFS);
count = 1;
goto loop;
}
Bprint(&bout, "\"mount /srv/9660 /n/dss %s\" failed %r\n", dssname);
goto out;
}
// print("mount %s\n", dssname);
sdiskno = dskno;
out:
return "/n/dss";
}