static int32_t
consread(Chan *c, void *buf, int32_t n, int64_t off)
{
Proc *up = externup();
uint64_t l;
Mach *mp;
char *b, *bp, *s, *e;
char tmp[512]; /* Qswap is 381 bytes at clu */
int i, k, id;
int32_t offset;
if(n <= 0)
return n;
offset = off;
switch((uint32_t)c->qid.path){
case Qdir:
return devdirread(c, buf, n, consdir, nelem(consdir), devgen);
case Qcons:
error(Egreg);
case Qcputime:
k = offset;
if(k >= 6*NUMSIZE)
return 0;
if(k+n > 6*NUMSIZE)
n = 6*NUMSIZE - k;
/* easiest to format in a separate buffer and copy out */
for(i=0; i<6 && NUMSIZE*i<k+n; i++){
l = up->time[i];
if(i == TReal)
l = sys->ticks - l;
l = TK2MS(l);
readnum(0, tmp+NUMSIZE*i, NUMSIZE, l, NUMSIZE);
}
memmove(buf, tmp+k, n);
return n;
case Qkmesg:
/*
* This is unlocked to avoid tying up a process
* that's writing to the buffer. kmesg.n never
* gets smaller, so worst case the reader will
* see a slurred buffer.
*/
if(off >= kmesg.n)
n = 0;
else{
if(off+n > kmesg.n)
n = kmesg.n - off;
memmove(buf, kmesg.buf+off, n);
}
return n;
case Qkprint:
error(Egreg);
case Qpgrpid:
return readnum(offset, buf, n, up->pgrp->pgrpid, NUMSIZE);
case Qpid:
return readnum(offset, buf, n, up->pid, NUMSIZE);
case Qppid:
return readnum(offset, buf, n, up->parentpid, NUMSIZE);
case Qtime:
return readtime(offset, buf, n);
case Qbintime:
return readbintime(buf, n);
case Qhostowner:
return readstr(offset, buf, n, eve);
case Qhostdomain:
return readstr(offset, buf, n, hostdomain);
case Quser:
return readstr(offset, buf, n, up->user);
case Qnull:
return 0;
case Qsysstat:
n = MACHMAX*(NUMSIZE*11+2+1);
b = smalloc(n + 1); /* +1 for NUL */
bp = b;
e = bp + n;
for(id = 0; id < MACHMAX; id++)
if((mp = sys->machptr[id]) != nil && mp->online){
readnum(0, bp, NUMSIZE, mp->machno, NUMSIZE);
bp += NUMSIZE;
readnum(0, bp, NUMSIZE, mp->cs, NUMSIZE);
bp += NUMSIZE;
readnum(0, bp, NUMSIZE, mp->intr, NUMSIZE);
bp += NUMSIZE;
readnum(0, bp, NUMSIZE, mp->syscall, NUMSIZE);
bp += NUMSIZE;
readnum(0, bp, NUMSIZE, mp->pfault, NUMSIZE);
bp += NUMSIZE;
readnum(0, bp, NUMSIZE, mp->tlbfault, NUMSIZE);
bp += NUMSIZE;
readnum(0, bp, NUMSIZE, mp->tlbpurge, NUMSIZE);
bp += NUMSIZE;
readnum(0, bp, NUMSIZE, sys->load, NUMSIZE);
bp += NUMSIZE;
readnum(0, bp, NUMSIZE,
(mp->perf.avg_inidle*100)/mp->perf.period,
NUMSIZE);
bp += NUMSIZE;
readnum(0, bp, NUMSIZE,
(mp->perf.avg_inintr*100)/mp->perf.period,
NUMSIZE);
bp += NUMSIZE;
readnum(0, bp, NUMSIZE, 0, NUMSIZE); /* sched # */
bp += NUMSIZE;
bp = strecpy(bp, e, rolename[mp->NIX.nixtype]);
*bp++ = '\n';
}
if(waserror()){
free(b);
nexterror();
}
n = readstr(offset, buf, n, b);
free(b);
poperror();
return n;
case Qswap:
tmp[0] = 0;
s = seprintpagestats(tmp, tmp + sizeof tmp);
s = seprintphysstats(s, tmp + sizeof tmp);
b = buf;
l = s - tmp;
i = readstr(offset, b, l, tmp);
b += i;
n -= i;
if(offset > l)
offset -= l;
else
offset = 0;
return i + mallocreadsummary(c, b, n, offset);
case Qsysname:
if(sysname == nil)
return 0;
return readstr(offset, buf, n, sysname);
case Qrandom:
return randomread(buf, n);
case Qurandom:
return urandomread(buf, n);
case Qdrivers:
return devtabread(c, buf, n, off);
case Qzero:
memset(buf, 0, n);
return n;
case Qosversion:
snprint(tmp, sizeof tmp, "2000");
n = readstr(offset, buf, n, tmp);
return n;
case Qdebug:
s = seprint(tmp, tmp + sizeof tmp, "locks %lu\n", lockstats.locks);
s = seprint(s, tmp + sizeof tmp, "glare %lu\n", lockstats.glare);
s = seprint(s, tmp + sizeof tmp, "inglare %lu\n", lockstats.inglare);
s = seprint(s, tmp + sizeof tmp, "qlock %lu\n", qlockstats.qlock);
seprint(s, tmp + sizeof tmp, "qlockq %lu\n", qlockstats.qlockq);
return readstr(offset, buf, n, tmp);
break;
case Qsyscall:
snprint(tmp, sizeof tmp, "%s", printallsyscalls ? "on" : "off");
return readstr(offset, buf, n, tmp);
break;
default:
print("consread %#llx\n", c->qid.path);
error(Egreg);
}
return -1; /* never reached */
}
static long
consread(Chan *c, void *va, long n, vlong offset)
{
int send;
char *p, buf[64], ch;
if(c->qid.type & QTDIR)
return devdirread(c, va, n, contab, nelem(contab), devgen);
switch((ulong)c->qid.path) {
default:
error(Egreg);
case Qsysctl:
return readstr(offset, va, n, VERSION);
case Qsysname:
if(ossysname == nil)
return 0;
return readstr(offset, va, n, ossysname);
case Qrandom:
return randomread(va, n);
case Qnotquiterandom:
genrandom(va, n);
return n;
case Qhostowner:
return readstr(offset, va, n, eve);
case Qhoststdin:
return read(0, va, n); /* should be pread */
case Quser:
return readstr(offset, va, n, up->env->user);
case Qjit:
snprint(buf, sizeof(buf), "%d", cflag);
return readstr(offset, va, n, buf);
case Qtime:
snprint(buf, sizeof(buf), "%.lld", timeoffset + osusectime());
return readstr(offset, va, n, buf);
case Qdrivers:
return devtabread(c, va, n, offset);
case Qmemory:
return poolread(va, n, offset);
case Qnull:
return 0;
case Qmsec:
return readnum(offset, va, n, osmillisec(), NUMSIZE);
case Qcons:
qlock(&kbd.q);
if(waserror()){
qunlock(&kbd.q);
nexterror();
}
if(dflag)
error(Enonexist);
/* register this proc's read interest in the channel */
/* this probably won't be done here. the read/readn requests
* are going to be different watcher callbacks
*/
/* the following waits for a signal from the keyboard handler */
uv_mutex_lock(&line_lock);
uv_cond_wait(&line_ready, &line_lock);
n = qread(lineq, va, n);
uv_mutex_unlock(&line_lock);
qunlock(&kbd.q);
poperror();
return n;
case Qscancode:
if(offset == 0)
return readstr(0, va, n, gkscanid);
return qread(gkscanq, va, n);
case Qkeyboard:
return qread(gkbdq, va, n);
case Qkprint:
rlock(&kprintq.l);
if(waserror()){
runlock(&kprintq.l);
nexterror();
}
n = qread(kprintq.q, va, n);
poperror();
runlock(&kprintq.l);
return n;
}
}
static long
consread(Chan *c, void *va, long n, vlong offset)
{
int send;
char buf[64], ch;
if(c->qid.type & QTDIR)
return devdirread(c, va, n, contab, nelem(contab), devgen);
switch((ulong)c->qid.path) {
default:
error(Egreg);
case Qsysctl:
return readstr(offset, va, n, VERSION);
case Qsysname:
if(ossysname == nil)
return 0;
return readstr(offset, va, n, ossysname);
case Qrandom:
return randomread(va, n);
case Qnotquiterandom:
genrandom(va, n);
return n;
case Qhostowner:
return readstr(offset, va, n, eve);
case Qhoststdin:
return read(0, va, n); /* should be pread */
case Quser:
return readstr(offset, va, n, up->env->user);
case Qjit:
snprint(buf, sizeof(buf), "%d", cflag);
return readstr(offset, va, n, buf);
case Qtime:
snprint(buf, sizeof(buf), "%.lld", timeoffset + osusectime());
return readstr(offset, va, n, buf);
case Qdrivers:
return devtabread(c, va, n, offset);
case Qmemory:
return poolread(va, n, offset);
case Qnull:
return 0;
case Qmsec:
return readnum(offset, va, n, osmillisec(), NUMSIZE);
case Qcons:
qlock(&kbd.q);
if(waserror()){
qunlock(&kbd.q);
nexterror();
}
if(dflag)
error(Enonexist);
while(!qcanread(lineq)) {
if(qread(kbdq, &ch, 1) == 0)
continue;
send = 0;
if(ch == 0){
/* flush output on rawoff -> rawon */
if(kbd.x > 0)
send = !qcanread(kbdq);
}else if(kbd.raw){
kbd.line[kbd.x++] = ch;
send = !qcanread(kbdq);
}else{
switch(ch){
case '\b':
if(kbd.x)
kbd.x--;
break;
case 0x15:
kbd.x = 0;
break;
case 0x04:
send = 1;
break;
case '\n':
send = 1;
default:
kbd.line[kbd.x++] = ch;
break;
}
}
if(send || kbd.x == sizeof kbd.line){
qwrite(lineq, kbd.line, kbd.x);
kbd.x = 0;
}
}
n = qread(lineq, va, n);
qunlock(&kbd.q);
poperror();
return n;
case Qscancode:
if(offset == 0)
return readstr(0, va, n, gkscanid);
return qread(gkscanq, va, n);
case Qkeyboard:
return qread(gkbdq, va, n);
case Qkprint:
rlock(&kprintq.l);
if(waserror()){
runlock(&kprintq.l);
nexterror();
}
n = qread(kprintq.q, va, n);
poperror();
runlock(&kprintq.l);
return n;
}
}
static long
consread(Chan *c, void *va, long n, vlong offset)
{
int send;
char *p, buf[64], ch;
FILE * battery;
FILE * brightness;
int size;
if(c->qid.type & QTDIR)
return devdirread(c, va, n, contab, nelem(contab), devgen);
switch((ulong)c->qid.path) {
default:
error(Egreg);
case Qsysctl:
return readstr(offset, va, n, VERSION);
case Qsysname:
if(ossysname == nil)
return 0;
return readstr(offset, va, n, ossysname);
case Qrandom:
return randomread(va, n);
case Qnotquiterandom:
genrandom(va, n);
return n;
case Qhostowner:
return readstr(offset, va, n, eve);
case Qhoststdin:
return read(0, va, n); /* should be pread */
case Quser:
return readstr(offset, va, n, up->env->user);
case Qjit:
snprint(buf, sizeof(buf), "%d", cflag);
return readstr(offset, va, n, buf);
case Qtime:
snprint(buf, sizeof(buf), "%.lld", timeoffset + osusectime());
return readstr(offset, va, n, buf);
case Qdrivers:
return devtabread(c, va, n, offset);
case Qmemory:
return poolread(va, n, offset);
case Qnull:
return 0;
case Qmsec:
return readnum(offset, va, n, osmillisec(), NUMSIZE);
case Qcons:
qlock(&kbd.q);
if(waserror()){
qunlock(&kbd.q);
nexterror();
}
if(dflag)
error(Enonexist);
while(!qcanread(lineq)) {
if(qread(kbdq, &ch, 1) == 0)
continue;
send = 0;
if(ch == 0){
/* flush output on rawoff -> rawon */
if(kbd.x > 0)
send = !qcanread(kbdq);
}else if(kbd.raw){
kbd.line[kbd.x++] = ch;
send = !qcanread(kbdq);
}else{
switch(ch){
case '\b':
if(kbd.x)
kbd.x--;
break;
case 0x15:
kbd.x = 0;
break;
case 0x04:
send = 1;
break;
case '\n':
send = 1;
default:
kbd.line[kbd.x++] = ch;
break;
}
}
if(send || kbd.x == sizeof kbd.line){
qwrite(lineq, kbd.line, kbd.x);
kbd.x = 0;
}
}
n = qread(lineq, va, n);
qunlock(&kbd.q);
poperror();
return n;
case Qscancode:
if(offset == 0)
return readstr(0, va, n, gkscanid);
return qread(gkscanq, va, n);
case Qkeyboard:
return qread(gkbdq, va, n);
case Qevents:
return qread(c->aux, va, n);
case Qkprint:
rlock(&kprintq.l);
if(waserror()){
runlock(&kprintq.l);
nexterror();
}
n = qread(kprintq.q, va, n);
poperror();
runlock(&kprintq.l);
return n;
case Qbattery:
if(type == 's')
battery = fopen("/sys/class/power_supply/battery/capacity", "r");
else if(type == 'c')
battery = fopen("/sys/class/power_supply/max17042-0/capacity", "r");
else
battery = fopen("/sys/class/power_supply/battery/capacity", "r");
size = fread(buf, 1, sizeof(buf), battery);
fclose(battery);
buf[size - 1] = '\0';
return readstr(offset, va, n, buf);
case Qtype:
if(type == 's')
strncpy(buf, "nexus s", sizeof(buf));
else if(type == 'c')
strncpy(buf, "nook color", sizeof(buf));
else if(type == 'e')
strncpy(buf, "emulator", sizeof(buf));
else
strncpy(buf, "nexus s", sizeof(buf));
return readstr(offset, va, n, buf);
case Qbrightness:
if(type == 'c')
brightness = fopen("/sys/devices/platform/omap_pwm_led/leds/lcd-backlight/brightness", "r");
else if(type == 'e')
return;
else
brightness = fopen("/sys/class/backlight/s5p_bl/brightness", "r");
size = fread(buf, 1, sizeof(buf), brightness);
fclose(brightness);
buf[size - 1] = '\0';
return readstr(offset, va, n, buf);
}
}
