ref: 39bf5b987e8ab53a74adec5a15b30f4eda85b357
dir: /sys/src/cmd/cwfs/con.c/
#include "all.h"
static Command command[100];
static Flag flag[35];
static char statsdef[20]; /* default stats list */
static int whoflag;
static void consserve1(void *);
static void installcmds(void);
static void tzinit(char*);
void
consserve(void)
{
int i;
snprint(cons.chan->whochan, sizeof(cons.chan->whochan), "console");
installcmds();
con_session();
cmd_exec("cfs");
cmd_exec("users");
cmd_exec("version");
for(i = 0; command[i].arg0; i++)
if(strcmp("cwcmd", command[i].arg0) == 0){
cmd_exec("cwcmd touchsb");
break;
}
/* switch console output to the cmd pipe */
dup(0, 1);
newproc(consserve1, 0, "con");
}
/* console commands process */
static void
consserve1(void *)
{
char *conline;
while(conline = Brdline(&bin, '\n')){
conline[Blinelen(&bin)-1] = '\0';
cmd_exec(conline);
}
}
static int
cmdcmp(void *va, void *vb)
{
Command *a, *b;
a = va;
b = vb;
return strcmp(a->arg0, b->arg0);
}
void
cmd_install(char *arg0, char *help, void (*func)(int, char*[]))
{
int i;
qlock(&cons);
for(i=0; command[i].arg0; i++)
;
if(i >= nelem(command)-2) {
qunlock(&cons);
print("cmd_install: too many commands\n");
return;
}
command[i+1].arg0 = 0;
command[i].help = help;
command[i].func = func;
command[i].arg0 = arg0;
qsort(command, i+1, sizeof(Command), cmdcmp);
qunlock(&cons);
}
void
cmd_exec(char *arg)
{
char line[2*Maxword], *s;
char *argv[10];
int argc, i, c;
if(strlen(arg) >= nelem(line)-2) {
print("cmd_exec: line too long\n");
return;
}
strcpy(line, arg);
argc = 0;
s = line;
c = *s++;
for(;;) {
while(isascii(c) && isspace(c))
c = *s++;
if(c == 0)
break;
if(argc >= nelem(argv)-2) {
print("cmd_exec: too many args\n");
return;
}
argv[argc++] = s-1;
while((!isascii(c) || !isspace(c)) && c != '\0')
c = *s++;
s[-1] = 0;
}
if(argc <= 0)
return;
for(i=0; s=command[i].arg0; i++)
if(strcmp(argv[0], s) == 0) {
(*command[i].func)(argc, argv);
return;
}
print("cmd_exec: unknown command: %s\n", argv[0]);
}
static void
cmd_halt(int, char *[])
{
wlock(&mainlock); /* halt */
sync("halt");
exit();
}
static void
cmd_duallow(int argc, char *argv[])
{
int uid;
if(argc <= 1) {
duallow = 0;
return;
}
uid = strtouid(argv[1]);
if(uid < 0)
uid = number(argv[1], -2, 10);
if(uid < 0) {
print("bad uid %s\n", argv[1]);
return;
}
duallow = uid;
}
static void
cmd_stats(int argc, char *argv[])
{
int i, c;
char buf[30], *s, *p, *q;
if(argc <= 1) {
if(statsdef[0] == 0)
strcpy(statsdef, "a");
sprint(buf, "stats s%s", statsdef);
cmd_exec(buf);
return;
}
strcpy(buf, "stat");
p = strchr(buf, 0);
p[1] = 0;
q = 0;
for(i = 1; i < argc; i++)
for(s = argv[i]; c = *s; s++) {
if(c == 's')
continue;
if(c == '-') {
q = statsdef;
continue;
}
if(q) {
*q++ = c;
*q = 0;
}
*p = c;
cmd_exec(buf);
}
}
static void
cmd_stata(int, char *[])
{
int i;
print("cons stats\n");
// print("\twork =%7W%7W%7W rps\n", cons.work+0, cons.work+1, cons.work+2);
// print("\trate =%7W%7W%7W tBps\n", cons.rate+0, cons.rate+1, cons.rate+2);
// print("\thits =%7W%7W%7W iops\n", cons.bhit+0, cons.bhit+1, cons.bhit+2);
// print("\tread =%7W%7W%7W iops\n", cons.bread+0, cons.bread+1, cons.bread+2);
// print("\trah =%7W%7W%7W iops\n", cons.brahead+0, cons.brahead+1, cons.brahead+2);
// print("\tinit =%7W%7W%7W iops\n", cons.binit+0, cons.binit+1, cons.binit+2);
print("\tbufs = %3ld sm %3ld lg %ld res\n",
cons.nsmall, cons.nlarge, cons.nreseq);
for(i=0; i<nelem(mballocs); i++)
if(mballocs[i])
print("\t[%d]=%d\n", i, mballocs[i]);
print("\tioerr= %3ld wr %3ld ww %3ld dr %3ld dw\n",
cons.nwormre, cons.nwormwe, cons.nwrenre, cons.nwrenwe);
print("\tcache= %9ld hit %9ld miss\n",
cons.nwormhit, cons.nwormmiss);
}
static int
flagcmp(void *va, void *vb)
{
Flag *a, *b;
a = va;
b = vb;
return strcmp(a->arg0, b->arg0);
}
ulong
flag_install(char *arg, char *help)
{
int i;
qlock(&cons);
for(i=0; flag[i].arg0; i++)
;
if(i >= 32) {
qunlock(&cons);
print("flag_install: too many flags\n");
return 0;
}
flag[i+1].arg0 = 0;
flag[i].arg0 = arg;
flag[i].help = help;
flag[i].flag = 1<<i;
qsort(flag, i+1, sizeof(Flag), flagcmp);
qunlock(&cons);
return 1<<i;
}
void
cmd_flag(int argc, char *argv[])
{
int f, n, i, j;
char *s;
Chan *cp;
if(argc <= 1) {
for(i=0; flag[i].arg0; i++)
print("%.4lux %s %s\n",
flag[i].flag, flag[i].arg0, flag[i].help);
if(cons.flags)
print("flag[*] = %.4lux\n", cons.flags);
for(cp = chans; cp; cp = cp->next)
if(cp->flags)
print("flag[%3d] = %.4lux\n", cp->chan, cp->flags);
return;
}
f = 0;
n = -1;
for(i=1; i<argc; i++) {
for(j=0; s=flag[j].arg0; j++)
if(strcmp(s, argv[i]) == 0)
goto found;
j = number(argv[i], -1, 10);
if(j < 0) {
print("bad flag argument: %s\n", argv[i]);
continue;
}
n = j;
continue;
found:
f |= flag[j].flag;
}
if(n < 0) {
cons.flags ^= f;
if(f == 0)
cons.flags = 0;
print("flag = %.8lux\n", cons.flags);
return;
}
for(cp = chans; cp; cp = cp->next)
if(cp->chan == n) {
cp->flags ^= f;
if(f == 0)
cp->flags = 0;
print("flag[%3d] = %.8lux\n", cp->chan, cp->flags);
return;
}
print("no such channel\n");
}
static void
cmd_who(int argc, char *argv[])
{
Chan *cp;
int i, c;
c = 0;
for(cp = chans; cp; cp = cp->next) {
if(cp->whotime == 0 && !(cons.flags & whoflag)) {
c++;
continue;
}
if(argc > 1) {
for(i=1; i<argc; i++)
if(strcmp(argv[i], cp->whoname) == 0)
break;
if(i >= argc) {
c++;
continue;
}
}
print("%3d: %10s %24s", cp->chan, cp->whoname, cp->whochan);
if(cp->whoprint)
cp->whoprint(cp);
print("\n");
}
if(c > 0)
print("%d chans not listed\n", c);
}
static void
cmd_hangup(int argc, char *argv[])
{
Chan *cp;
int n;
if(argc < 2) {
print("usage: hangup chan-number\n");
return;
}
n = number(argv[1], -1, 10);
for(cp = chans; cp; cp = cp->next) {
if(cp->whotime == 0) {
if(cp->chan == n)
print("that chan is hung up\n");
continue;
}
if(cp->chan == n)
chanhangup(cp, "console command");
}
}
static void
cmd_sync(int, char *[])
{
wlock(&mainlock); /* sync */
sync("command");
wunlock(&mainlock);
}
static void
cmd_help(int argc, char *argv[])
{
char *arg;
int i, j;
for(i=0; arg=command[i].arg0; i++) {
if(argc > 1) {
for(j=1; j<argc; j++)
if(strcmp(argv[j], arg) == 0)
goto found;
continue;
}
found:
print("\t%s %s\n", arg, command[i].help);
}
}
void
cmd_fstat(int argc, char *argv[])
{
int i;
for(i=1; i<argc; i++) {
if(walkto(argv[i])) {
print("cant stat %s\n", argv[i]);
continue;
}
con_fstat(FID2);
}
}
void
cmd_create(int argc, char *argv[])
{
int uid, gid;
long perm;
char elem[NAMELEN], *p;
if(argc < 5) {
print("usage: create path uid gid mode [lad]\n");
return;
}
p = utfrrune(argv[1], '/');
if(p) {
*p++ = 0;
if(walkto(argv[1])) {
print("create failed in walkto: %s\n", p);
return;
}
} else {
if(walkto("/"))
return;
p = argv[1];
}
if(strlen(p) >= NAMELEN) {
print("name too long %s\n", p);
return;
}
memset(elem, 0, sizeof(elem));
strcpy(elem, p);
uid = strtouid(argv[2]);
if(uid < -1)
uid = number(argv[2], -2, 10);
if(uid < -1) {
print("bad uid %s\n", argv[2]);
return;
}
gid = strtouid(argv[3]);
if(gid < -1)
gid = number(argv[3], -2, 10);
if(gid < -1) {
print("bad gid %s\n", argv[3]);
return;
}
perm = number(argv[4], 0777, 8) & 0777;
if(argc > 5) {
if(strchr(argv[5], 'l'))
perm |= DMEXCL;
if(strchr(argv[5], 'a'))
perm |= DMAPPEND;
if(strchr(argv[5], 'd'))
perm |= DMDIR;
if(strchr(argv[5], 't'))
perm |= DMTMP;
}
if(con_create(FID2, elem, uid, gid, perm, 0))
print("create failed: %s/%s\n", argv[1], p);
}
static void
cmd_clri(int argc, char *argv[])
{
int i;
for(i=1; i<argc; i++) {
if(walkto(argv[i])) {
print("cant remove %s\n", argv[i]);
continue;
}
con_clri(FID2);
}
}
static void
cmd_allow(int argc, char *argv[])
{
char *name;
int uid;
uid = -1;
name = "any user";
if(argc > 1){
name = argv[1];
uid = strtouid(name);
if(uid < 0)
uid = number(name, -2, 10);
if(uid < 0) {
print("bad uid %s\n", name);
return;
}
}
print("allowed %s\n", name);
allowed = uid;
}
static void
cmd_disallow(int, char**)
{
allowed = 0;
}
void
ckblock(Device *d, Off a, int typ, Off qpath)
{
Iobuf *p;
if(a) {
p = getbuf(d, a, Brd);
if(p) {
checktag(p, typ, qpath);
putbuf(p);
}
}
}
void
doclean(Iobuf *p, Dentry *d, int n, Off a)
{
int i, mod, typ;
Off qpath;
mod = 0;
qpath = d->qid.path;
typ = Tfile;
if(d->mode & DDIR){
qpath ^= QPDIR;
typ = Tdir;
}
for(i=0; i<NDBLOCK; i++) {
print("dblock[%d] = %lld\n", i, (Wideoff)d->dblock[i]);
ckblock(p->dev, d->dblock[i], typ, qpath);
if(i == n) {
d->dblock[i] = a;
mod = 1;
print("dblock[%d] modified %lld\n", i, (Wideoff)a);
}
}
/* add NDBLOCK so user can cite block address by index */
for (i = 0; i < NIBLOCK; i++) {
print("iblocks[%d] = %lld\n", NDBLOCK+i, (Wideoff)d->iblocks[i]);
ckblock(p->dev, d->iblocks[i], Tind1+i, qpath);
if(NDBLOCK+i == n) {
d->iblocks[i] = a;
mod = 1;
print("iblocks[%d] modified %lld\n", NDBLOCK+i, (Wideoff)a);
}
}
if(mod)
p->flags |= Bmod|Bimm;
}
static void
cmd_clean(int argc, char *argv[])
{
int n;
Off a;
Iobuf *p;
Dentry *d;
File *f;
p = 0;
f = 0;
while(argc > 1) {
n = -1;
if(argc > 2)
n = number(argv[2], -1, 10);
a = 0;
if(argc > 3)
a = number(argv[3], 0, 10);
if(walkto(argv[1])) {
print("cant remove %s\n", argv[1]);
break;
}
f = filep(cons.chan, FID2, 0);
if(!f)
break;
if(n >= 0 && f->fs->dev->type == Devro) {
print("readonly %s\n", argv[1]);
break;
}
p = getbuf(f->fs->dev, f->addr, Brd);
d = getdir(p, f->slot);
if(!d || !(d->mode & DALLOC)) {
print("not alloc %s\n", argv[1]);
break;
}
doclean(p, d, n, a);
break;
}
if(f)
qunlock(f);
if(p)
putbuf(p);
}
static void
cmd_remove(int argc, char *argv[])
{
int i;
for(i=1; i<argc; i++) {
if(walkto(argv[i])) {
print("cant remove %s\n", argv[i]);
continue;
}
con_remove(FID2);
}
}
static void
cmd_version(int, char *[])
{
tzinit("/adm/timezone/local");
print("%d-bit %s as of %T\n", sizeof(Off)*8 - 1, service, fs_mktime);
print("\tlast boot %T\n", boottime);
}
static void
cmd_cfs(int argc, char *argv[])
{
Filsys *fs;
char *name;
name = "main";
if(argc > 1)
name = argv[1];
fs = fsstr(name);
if(fs == 0) {
print("%s: unknown file system\n", name);
if(cons.curfs)
return;
fs = &filsys[0];
}
if(con_attach(FID1, "adm", fs->name))
panic("FID1 attach to root");
cons.curfs = fs;
print("current fs is \"%s\"\n", cons.curfs->name);
}
static void
cmd_prof(int argc, char *argv[])
{
int n;
long m, o;
char *p;
if(cons.profbuf == 0) {
print("no buffer\n");
return;
}
n = !cons.profile;
if(argc > 1)
n = number(argv[1], n, 10);
if(n && !cons.profile) {
print("clr and start\n");
memset(cons.profbuf, 0, cons.nprofbuf*sizeof(cons.profbuf[0]));
cons.profile = 1;
return;
}
if(!n && cons.profile) {
cons.profile = 0;
print("stop and write\n");
if(walkto("/adm/kprofdata"))
goto bad;
if(con_open(FID2, OWRITE|OTRUNC)) {
bad:
print("cant open /adm/kprofdata\n");
return;
}
p = (char*)cons.profbuf;
for(m=0; m<cons.nprofbuf; m++) {
n = cons.profbuf[m];
p[0] = n>>24;
p[1] = n>>16;
p[2] = n>>8;
p[3] = n>>0;
p += 4;
}
m = cons.nprofbuf*sizeof(cons.profbuf[0]);
o = 0;
while(m > 0) {
n = 8192;
if(n > m)
n = m;
con_write(FID2, (char*)cons.profbuf+o, o, n);
m -= n;
o += n;
}
return;
}
}
static void
tzinit(char *file)
{
char buf[1024];
Off o;
int f, n;
f = create("/env/timezone", OEXCL|OWRITE, 0666);
if(f < 0)
return;
if(walkto(file) || con_open(FID2, 0)) {
print("tzinit: cannot access %s\n", file);
close(f);
remove("/env/timezone");
return;
}
for(o = 0; (n = con_read(FID2, buf, o, sizeof(buf))) > 0; o += n)
write(f, buf, n);
close(f);
}
static void
cmd_time(int argc, char *argv[])
{
int i, len;
char *cmd;
vlong t1, t2;
t1 = nsec();
len = 0;
for(i=1; i<argc; i++)
len += 1 + strlen(argv[i]);
cmd = malloc(len + 1);
cmd[0] = 0;
for(i=1; i<argc; i++) {
strcat(cmd, " ");
strcat(cmd, argv[i]);
}
cmd_exec(cmd);
t2 = nsec();
free(cmd);
print("time = %lld ns\n", t2-t1);
}
void
cmd_noattach(int, char *[])
{
noattach = !noattach;
print("attach %s\n", noattach ? "disabled" : "enabled");
}
void
cmd_files(int, char *[])
{
long i, n;
Chan *cp;
for(cp = chans; cp; cp = cp->next)
cp->nfile = 0;
lock(&flock);
n = 0;
for(i=0; i<conf.nfile; i++)
if(files[i].cp) {
n++;
files[i].cp->nfile++;
}
print("%ld out of %ld files used\n", n, conf.nfile);
unlock(&flock);
n = 0;
for(cp = chans; cp; cp = cp->next)
if(cp->nfile) {
print("%3d: %5d\n", cp->chan, cp->nfile);
n += cp->nfile;
}
print("%ld out of %ld files used\n", n, conf.nfile);
}
void
cmd_chatty(int argc, char *argv[])
{
if(argc < 2) {
print("cmd_chatty: usage: chatty n\n");
return;
}
chatty = atoi(argv[1]);
}
static void
installcmds(void)
{
cmd_install("allow", "[uid] -- disable permission checking", cmd_allow);
cmd_install("cfs", "[file] -- set current filesystem", cmd_cfs);
cmd_install("chatty", "n -- set chattiness", cmd_chatty);
cmd_install("clean", "file [bno [addr]] -- block print/fix", cmd_clean);
cmd_install("check", "[options]", cmd_check);
cmd_install("clri", "[file ...] -- purge files/dirs", cmd_clri);
cmd_install("create", "path uid gid perm [lad] -- make a file/dir", cmd_create);
cmd_install("disallow", "-- (re)enable permission checking", cmd_disallow);
cmd_install("duallow", "uid -- duallow", cmd_duallow);
cmd_install("flag", "-- print set flags", cmd_flag);
cmd_install("fstat", "path -- print info on a file/dir", cmd_fstat);
cmd_install("halt", "-- return to boot rom", cmd_halt);
cmd_install("help", "", cmd_help);
cmd_install("newuser", "username -- add user to /adm/users", cmd_newuser);
cmd_install("profile", "[01] -- fs profile", cmd_prof);
cmd_install("remove", "[file ...] -- remove files/dirs", cmd_remove);
cmd_install("stata", "-- overall stats", cmd_stata);
cmd_install("stats", "[[-]flags ...] -- various stats", cmd_stats);
cmd_install("sync", "", cmd_sync);
cmd_install("time", "command -- time another command", cmd_time);
cmd_install("users", "[file] -- read /adm/users", cmd_users);
cmd_install("version", "-- print time of mk and boot", cmd_version);
cmd_install("who", "[user ...] -- print attaches", cmd_who);
cmd_install("hangup", "chan -- clunk files", cmd_hangup);
cmd_install("printconf", "-- print configuration", cmd_printconf);
cmd_install("noattach", "-- toggle noattach flag", cmd_noattach);
cmd_install("files", "-- report on files structure", cmd_files);
chatflag = flag_install("chat", "-- verbose");
errorflag = flag_install("error", "-- on errors");
whoflag = flag_install("allchans", "-- on who");
authdebugflag = flag_install("authdebug", "-- report authentications");
authdisableflag = flag_install("authdisable", "-- disable authentication");
}
int
walkto(char *name)
{
char elem[NAMELEN], *p;
int n;
if(con_clone(FID1, FID2))
return 1;
for(;;) {
p = utfrune(name, '/');
if(p == nil)
p = strchr(name, '\0');
if(p == name) {
if(*name == '\0')
return 0;
name = p+1;
continue;
}
n = p-name;
if(n > NAMELEN)
return 1;
memset(elem, 0, sizeof(elem));
memmove(elem, name, n);
if(con_walk(FID2, elem))
return 1;
name = p;
}
}
/* needs to parse and return vlongs to cope with new larger block numbers */
vlong
number(char *arg, int def, int base)
{
int c, sign, any;
vlong n;
if(arg == nil)
return def;
sign = 0;
any = 0;
n = 0;
for (c = *arg; isascii(c) && isspace(c) && c != '\n'; c = *arg)
arg++;
if(c == '-') {
sign = 1;
arg++;
c = *arg;
}
while (isascii(c) && (isdigit(c) || base == 16 && isxdigit(c))) {
n *= base;
if(c >= 'a' && c <= 'f')
n += c - 'a' + 10;
else if(c >= 'A' && c <= 'F')
n += c - 'A' + 10;
else
n += c - '0';
arg++;
c = *arg;
any = 1;
}
if(!any)
return def;
if(sign)
n = -n;
return n;
}