ref: ff4daa7e93f4ea09506276ecdb69fa1cca19a7a7
dir: /sys/src/cmd/disk/kfs/con.c/
#include "all.h"
#include "9p1.h"
static char elem[NAMELEN];
static Filsys* cur_fs;
static char conline[100];
void
consserve(void)
{
con_session();
cmd_exec("cfs");
cmd_exec("user");
}
int
cmd_exec(char *arg)
{
char *s, *c;
int i;
for(i=0; s = command[i].string; i++) {
for(c=arg; *s; c++)
if(*c != *s++)
goto brk;
if(*c == '\0' || *c == ' ' || *c == '\t'){
cons.arg = c;
(*command[i].func)();
return 1;
}
brk:;
}
return 0;
}
void
cmd_check(void)
{
char *s;
int flags;
flags = 0;
for(s = cons.arg; *s; s++){
while(*s == ' ' || *s == '\t')
s++;
if(*s == '\0')
break;
switch(*s){
/* rebuild the free list */
case 'f': flags |= Cfree; break;
/* fix bad tags */
case 't': flags |= Ctag; break;
/* fix bad tags and clear the contents of the block */
case 'c': flags |= Cream; break;
/* delete all redundant references to a block */
case 'd': flags |= Cbad; break;
/* read and check tags on all blocks */
case 'r': flags |= Crdall; break;
/* write all of the blocks you touch */
case 'w': flags |= Ctouch; break;
/* print all directories as they are read */
case 'p': flags |= Cpdir; break;
/* print all files as they are read */
case 'P': flags |= Cpfile; break;
/* quiet, just report really nasty stuff */
case 'q': flags |= Cquiet; break;
}
}
check(cur_fs, flags);
}
enum
{
Sset = (1<<0),
Setc = (1<<1),
};
void
cmd_stats(void)
{
cprint("work stats\n");
cprint(" work = %A rps\n", (Filta){&cons.work, 1});
cprint(" rate = %A tBps\n", (Filta){&cons.rate, 1000});
cprint(" hits = %A iops\n", (Filta){&cons.bhit, 1});
cprint(" read = %A iops\n", (Filta){&cons.bread, 1});
cprint(" init = %A iops\n", (Filta){&cons.binit, 1});
/* for(i = 0; i < MAXTAG; i++)
cprint(" tag %G = %A iops\n", i, (Filta){&cons.tags[i], 1});
*/
}
void
cmd_sync(void)
{
rlock(&mainlock);
syncall();
runlock(&mainlock);
}
void
cmd_halt(void)
{
wlock(&mainlock);
syncall();
superok(cur_fs->dev, superaddr(cur_fs->dev), 1);
print("kfs: file system halted\n");
}
void
cmd_start(void)
{
superok(cur_fs->dev, superaddr(cur_fs->dev), 0);
wunlock(&mainlock);
print("kfs: file system started\n");
}
void
cmd_help(void)
{
int i;
for(i=0; command[i].string; i++)
cprint(" %s %s\n", command[i].string, command[i].args);
cprint("check options:\n"
" r read all blocks\n"
" f rebuild the free list\n"
" t fix all bad tags\n"
" c fix bad tags and zero the blocks\n"
" d delete all redundant references to blocks\n"
" p print directories as they are checked\n"
" P print all files as they are checked\n"
" w write all blocks that are read\n");
}
void
cmd_create(void)
{
int uid, gid, err;
long perm;
char oelem[NAMELEN];
char name[NAMELEN];
if(err = con_clone(FID1, FID2)){
cprint("clone failed: %s\n", errstring[err]);
return;
}
if(skipbl(1)){
cprint("skipbl\n");
return;
}
oelem[0] = 0;
while(nextelem()) {
if(oelem[0])
if(err = con_walk(FID2, oelem)){
cprint("walk failed: %s\n", errstring[err]);
return;
}
memmove(oelem, elem, NAMELEN);
}
if(skipbl(1))
return;
uid = strtouid(cname(name));
if(uid == 0){
cprint("unknown user %s\n", name);
return;
}
gid = strtouid(cname(name));
if(gid == 0){
cprint("unknown group %s\n", name);
return;
}
perm = number(0777, 8);
skipbl(0);
for(; *cons.arg; cons.arg++){
if(*cons.arg == 'l')
perm |= PLOCK;
else
if(*cons.arg == 'a')
perm |= PAPND;
else
if(*cons.arg == 'd')
perm |= PDIR;
else
break;
}
err = con_create(FID2, elem, uid, gid, perm, 0);
if(err)
cprint("can't create %s: %s\n", elem, errstring[err]);
}
void
cmd_clri(void)
{
if(con_clone(FID1, FID2))
return;
if(skipbl(1))
return;
while(nextelem())
if(con_walk(FID2, elem)){
cprint("can't walk %s\n", elem);
return;
}
con_clri(FID2);
}
void
cmd_rename(void)
{
ulong perm;
Dentry d;
char stat[DIRREC];
char oelem[NAMELEN], noelem[NAMELEN], nxelem[NAMELEN];
int err;
if(con_clone(FID1, FID2))
return;
if(skipbl(1))
return;
oelem[0] = 0;
while(nextelem()) {
if(oelem[0])
if(con_walk(FID2, oelem)){
cprint("file does not exits");
return;
}
memmove(oelem, elem, NAMELEN);
}
if(skipbl(1))
return;
if(cons.arg[0]=='/'){
if(con_clone(FID1, FID3))
return;
noelem[0] = 0;
while(nextelem()){
if(noelem[0])
if(con_walk(FID3, noelem)){
cprint("target path %s does not exist", noelem);
return;
}
memmove(noelem, elem, NAMELEN);
}
if(!con_walk(FID3, elem)){
cprint("target %s already exists\n", elem);
return;
}
if(con_walk(FID2, oelem)){
cprint("src %s does not exist\n", oelem);
return;
}
/*
* we know the target does not exist,
* the source does exist.
* to do the rename, create the target and then
* copy the directory entry directly. then remove the source.
*/
if(err = con_stat(FID2, stat)){
cprint("can't stat file: %s\n", errstring[err]);
return;
}
convM2D9p1(stat, &d);
perm = (d.mode&0777)|((d.mode&0x7000)<<17);
if(err = con_create(FID3, elem, d.uid, d.gid, perm, (d.mode&DDIR)?OREAD:ORDWR)){
cprint("can't create %s: %s\n", elem, errstring[err]);
return;
}
if(err = con_swap(FID2, FID3)){
cprint("can't swap data: %s\n", errstring[err]);
return;
}
if(err = con_remove(FID2)){
cprint("can't remove file: %s\n", errstring[err]);
return;
}
}else{
cname(nxelem);
if(strchr(nxelem, '/')){
cprint("bad rename target: not full path, but contains slashes\n");
return;
}
if(!con_walk(FID2, nxelem))
cprint("file %s already exists\n", nxelem);
else if(con_walk(FID2, oelem))
cprint("file does not already exist\n");
else if(err = con_stat(FID2, stat))
cprint("can't stat file: %s\n", errstring[err]);
else{
convM2D9p1(stat, &d);
strncpy(d.name, nxelem, NAMELEN);
convD2M9p1(&d, stat);
if(err = con_wstat(FID2, stat))
cprint("can't move file: %s\n", errstring[err]);
}
}
}
void
cmd_remove(void)
{
if(con_clone(FID1, FID2))
return;
if(skipbl(1))
return;
while(nextelem())
if(con_walk(FID2, elem)){
cprint("can't walk %s\n", elem);
return;
}
con_remove(FID2);
}
void
cmd_cfs(void)
{
Filsys *fs;
if(*cons.arg != ' ') {
fs = &filesys[0]; /* default */
} else {
if(skipbl(1)){
cprint("skipbl\n");
return;
}
if(!nextelem())
fs = &filesys[0]; /* default */
else
fs = fsstr(elem);
}
if(fs == 0) {
cprint("unknown file system %s\n", elem);
return;
}
if(con_attach(FID1, "adm", fs->name))
panic("FID1 attach to root");
cur_fs = fs;
}
/*
* find out the length of a file
* given the mesg version of a stat buffer
* we call this because convM2D is different
* for the file system than in the os
*/
static uvlong
statlen(char *ap)
{
uchar *p;
ulong ll, hl;
p = (uchar*)ap;
p += 3*28+5*4;
ll = p[0] | (p[1]<<8) | (p[2]<<16) | (p[3]<<24);
hl = p[4] | (p[5]<<8) | (p[6]<<16) | (p[7]<<24);
return ll | ((uvlong) hl << 32);
}
int
adduser(char *user, int isgroup)
{
char stat[DIRREC];
char msg[100];
Uid *u;
int i, c, nu;
/*
* check uniq of name
* and get next uid
*/
cmd_exec("cfs");
cmd_exec("user");
if(isgroup)
nu = 9000;
else
nu = 0;
for(i=0, u=uid; i<conf.nuid; i++,u++) {
c = u->uid;
if(c == 0)
break;
if(strcmp(uidspace+u->offset, user) == 0)
return 1;
if(c >= 9000 && !isgroup)
continue;
if(c > nu)
nu = c;
}
nu++;
if(isgroup){
if(nu >= 0x10000) {
cprint("out of group ids\n");
return 0;
}
} else {
if(nu >= 9000) {
cprint("out of user ids\n");
return 0;
}
}
/*
* write onto adm/users
*/
if(con_clone(FID1, FID2)
|| con_path(FID2, "/adm/users")
|| con_open(FID2, 1)) {
cprint("can't open /adm/users\n");
return 0;
}
sprint(msg, "%d:%s:%s:\n", nu, user, user);
cprint("add user %s", msg);
c = strlen(msg);
i = con_stat(FID2, stat);
if(i){
cprint("can't stat /adm/users: %s\n", errstring[i]);
return 0;
}
i = con_write(FID2, msg, statlen(stat), c);
if(i != c){
cprint("short write on /adm/users: %d %d\n", c, i);
return 0;
}
return 1;
}
void
cmd_newuser(void)
{
char user[NAMELEN], param[NAMELEN], msg[100];
int i, c;
/*
* get uid
*/
cname(user);
cname(param);
for(i=0; i<NAMELEN; i++) {
c = user[i];
if(c == 0)
break;
if(c >= '0' && c <= '9'
|| c >= 'a' && c <= 'z'
|| c >= 'A' && c <= 'Z')
continue;
cprint("bad character in name: 0x%x\n", c);
return;
}
if(i < 2) {
cprint("name too short: %s\n", user);
return;
}
if(i >= NAMELEN) {
cprint("name too long: %s\n", user);
return;
}
switch(param[0]){
case 0:
if(!adduser(user, 0))
return;
cmd_exec("user");
break;
case ':':
adduser(user, 1);
cmd_exec("user");
return;
case '#':
adduser(user, 0);
cmd_exec("user");
return;
}
/*
* create directories
*/
cmd_exec("user");
sprint(msg, "create /usr/%s %s %s 775 d", user, user, user);
cmd_exec(msg);
sprint(msg, "create /usr/%s/tmp %s %s 775 d", user, user, user);
cmd_exec(msg);
sprint(msg, "create /usr/%s/lib %s %s 775 d", user, user, user);
cmd_exec(msg);
sprint(msg, "create /usr/%s/bin %s %s 775 d", user, user, user);
cmd_exec(msg);
sprint(msg, "create /usr/%s/bin/rc %s %s 775 d", user, user, user);
cmd_exec(msg);
sprint(msg, "create /usr/%s/bin/mips %s %s 775 d", user, user, user);
cmd_exec(msg);
sprint(msg, "create /usr/%s/bin/386 %s %s 775 d", user, user, user);
cmd_exec(msg);
sprint(msg, "create /usr/%s/bin/power %s %s 775 d", user, user, user);
cmd_exec(msg);
sprint(msg, "create /usr/%s/bin/alpha %s %s 775 d", user, user, user);
cmd_exec(msg);
}
void
cmd_checkuser(void)
{
uchar buf[DIRREC], *p;
static char utime[4];
if(con_clone(FID1, FID2)
|| con_path(FID2, "/adm/users")
|| con_open(FID2, 0)
|| con_stat(FID2, (char*)buf))
return;
p = buf + 3*NAMELEN + 4*4;
if(memcmp(utime, p, 4) == 0)
return;
memmove(utime, p, 4);
cmd_user();
}
void
cmd_allow(void)
{
wstatallow = 1;
}
void
cmd_disallow(void)
{
wstatallow = 0;
}
void
cmd_chat(void)
{
chat = 1 - chat;
}
void
cmd_atime(void)
{
noatime = !noatime;
if(noatime)
cprint("atimes will not be updated\n");
else
cprint("atimes will be updated\n");
}
void
cmd_noneattach(void)
{
allownone = !allownone;
if(allownone)
cprint("none can attach to new connections\n");
else
cprint("none can only attach on authenticated connections\n");
}
void
cmd_listen(void)
{
char addr[NAMELEN];
if(skipbl(0))
strcpy(addr, "tcp!*!564"); /* 9fs */
else
cname(addr);
if(netserve(addr))
cprint("announce %s failed\n", addr);
else
cprint("announce %s\n", addr);
}
void
cmd_nowritegroup(void)
{
writegroup = 0;
}
Command command[] =
{
"allow", cmd_allow, "",
"allowoff", cmd_disallow, "",
"atime", cmd_atime, "",
"cfs", cmd_cfs, "[filesys]",
"chat", cmd_chat, "",
"check", cmd_check, "[cdfpPqrtw]",
"clri", cmd_clri, "filename",
"create", cmd_create, "filename user group perm [ald]",
"disallow", cmd_disallow, "",
"halt", cmd_halt, "",
"help", cmd_help, "",
"listen", cmd_listen, "[address]",
"newuser", cmd_newuser, "username",
"noneattach", cmd_noneattach, "",
"nowritegroup", cmd_nowritegroup, "",
"remove", cmd_remove, "filename",
"rename", cmd_rename, "file newname",
"start", cmd_start, "",
"stats", cmd_stats, "[fw]",
"sync", cmd_sync, "",
"user", cmd_user, "",
0
};
int
skipbl(int err)
{
if(*cons.arg != ' ') {
if(err)
cprint("syntax error\n");
return 1;
}
while(*cons.arg == ' ')
cons.arg++;
return 0;
}
char*
_cname(char *name)
{
int i, c;
memset(name, 0, NAMELEN);
for(i=0;; i++) {
c = *cons.arg;
switch(c) {
case ' ':
case '\t':
case '\n':
case '\0':
return name;
}
if(i < NAMELEN-1)
name[i] = c;
cons.arg++;
}
}
char*
cname(char *name)
{
skipbl(0);
return _cname(name);
}
int
nextelem(void)
{
char *e;
int i, c;
e = elem;
while(*cons.arg == '/')
cons.arg++;
c = *cons.arg;
if(c == 0 || c == ' ')
return 0;
for(i = 0; c = *cons.arg; i++) {
if(c == ' ' || c == '/')
break;
if(i == NAMELEN) {
cprint("path name component too long\n");
return 0;
}
*e++ = c;
cons.arg++;
}
*e = 0;
return 1;
}
long
number(int d, int base)
{
int c, sign, any;
long n;
sign = 0;
any = 0;
n = 0;
c = *cons.arg;
while(c == ' ') {
cons.arg++;
c = *cons.arg;
}
if(c == '-') {
sign = 1;
cons.arg++;
c = *cons.arg;
}
while((c >= '0' && c <= '9') ||
(base == 16 && c >= 'a' && c <= 'f') ||
(base == 16 && c >= 'A' && c <= 'F')) {
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';
cons.arg++;
c = *cons.arg;
any = 1;
}
if(!any)
return d;
if(sign)
n = -n;
return n;
}