JehanneOS/drawterm
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Add real factotum.

Browse Source
This commit is contained in:
Russ Cox
2005-11-04 15:36:40 +00:00
parent 06b60293ad
commit ab73f2bbf5
26 changed files with 1361 additions and 58 deletions
Download Patch File Download Diff File Expand all files Collapse all files

60
kern/devroot.c
View File

@ -8,9 +8,12 @@ enum
{
Qdir = 0,
Qboot = 0x1000,
Qmnt = 0x2000,
Qfactotum,
Nrootfiles = 32,
Nbootfiles = 32,
Nmntfiles = 2,
};
typedef struct Dirlist Dirlist;
@ -26,6 +29,7 @@ struct Dirlist
static Dirtab rootdir[Nrootfiles] = {
"#/", {Qdir, 0, QTDIR}, 0, DMDIR|0555,
"boot", {Qboot, 0, QTDIR}, 0, DMDIR|0555,
"mnt", {Qmnt, 0, QTDIR}, 0, DMDIR|0555,
};
static uchar *rootdata[Nrootfiles];
static Dirlist rootlist =
@ -33,7 +37,7 @@ static Dirlist rootlist =
0,
rootdir,
rootdata,
2,
3,
Nrootfiles
};
@ -50,6 +54,19 @@ static Dirlist bootlist =
Nbootfiles
};
static Dirtab mntdir[Nmntfiles] = {
"mnt", {Qmnt, 0, QTDIR}, 0, DMDIR|0555,
"factotum", {Qfactotum, 0, QTDIR}, 0, DMDIR|0555,
};
static Dirlist mntlist =
{
Qmnt,
mntdir,
nil,
2,
Nmntfiles
};
/*
* add a file to the list
*/
@ -97,7 +114,6 @@ rootreset(void)
addrootdir("dev");
addrootdir("env");
addrootdir("fd");
addrootdir("mnt");
addrootdir("net");
addrootdir("net.alt");
addrootdir("proc");
@ -129,6 +145,13 @@ rootgen(Chan *c, char *name, Dirtab *dirt, int ndirt, int s, Dir *dp)
return 1;
}
return devgen(c, name, rootlist.dir, rootlist.ndir, s, dp);
case Qmnt:
if(s == DEVDOTDOT){
Qid tqiddir = {Qdir, 0, QTDIR};
devdir(c, tqiddir, "#/", 0, eve, 0555, dp);
return 1;
}
return devgen(c, name, mntlist.dir, mntlist.ndir, s, dp);
case Qboot:
if(s == DEVDOTDOT){
Qid tqiddir = {Qdir, 0, QTDIR};
@ -139,22 +162,25 @@ rootgen(Chan *c, char *name, Dirtab *dirt, int ndirt, int s, Dir *dp)
default:
if(s == DEVDOTDOT){
Qid tqiddir = {Qdir, 0, QTDIR};
if((int)c->qid.path < Qboot)
devdir(c, tqiddir, "#/", 0, eve, 0555, dp);
else {
tqiddir.path = Qboot;
devdir(c, tqiddir, "#/", 0, eve, 0555, dp);
}
tqiddir.path = c->qid.path&0xF000;
devdir(c, tqiddir, "#/", 0, eve, 0555, dp);
return 1;
}
if(s != 0)
return -1;
if((int)c->qid.path < Qboot){
switch((int)c->qid.path & 0xF000){
case Qdir:
t = c->qid.path-1;
l = &rootlist;
}else{
break;
case Qboot:
t = c->qid.path - Qboot - 1;
l = &bootlist;
break;
case Qmnt:
t = c->qid.path - Qmnt - 1;
l = &mntlist;
break;
}
if(t >= l->ndir)
return -1;
@ -209,17 +235,19 @@ rootread(Chan *c, void *buf, long n, vlong off)
switch(t){
case Qdir:
case Qboot:
case Qmnt:
return devdirread(c, buf, n, nil, 0, rootgen);
}
if(t<Qboot)
l = &rootlist;
else{
t -= Qboot;
if(t&Qboot)
l = &bootlist;
}
else if(t&Qmnt)
l = &mntlist;
else
l = &bootlist;
t &= 0xFFF;
t--;
if(t >= l->ndir)
error(Egreg);