## diffname port/dev.c 1990/0227
## diff -e /dev/null /n/bootesdump/1990/0227/sys/src/9/mips/dev.c
0a
#include "u.h"
#include "lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "errno.h"
#define DEVTAB
#include "devtab.h"
#include "fcall.h"
int
devno(int c, int user)
{
char *s;
s = strchr(devchar, c);
if(s==0 || c==0){
if(user)
return -1;
panic("devno %c 0x%ux", c, c);
}
return s - devchar;
}
void
devdir(Chan *c, long qid, char *n, long length, long perm, Dir *db)
{
strcpy(db->name, n);
db->qid = qid;
db->type = devchar[c->type];
db->dev = c->dev;
if(qid & CHDIR)
db->mode = CHDIR|perm;
else
db->mode = perm;
db->atime = seconds();
db->mtime = db->atime;
db->hlength = 0;
db->length = length;
db->uid = 0;
db->gid = 0;
}
int
devgen(Chan *c, Dirtab *tab, int ntab, int i, Dir *dp)
{
if(tab==0 || i>=ntab)
return -1;
tab += i;
devdir(c, tab->qid, tab->name, tab->length, tab->perm, dp);
return 1;
}
Chan *
devattach(int tc, char *spec)
{
Chan *c;
c = newchan();
c->qid = CHDIR;
c->type = devno(tc, 0);
return c;
}
Chan *
devclone(Chan *c, Chan *nc)
{
if(nc == 0)
nc = newchan();
nc->type = c->type;
nc->mode = c->mode;
nc->qid = c->qid;
nc->offset = c->offset;
nc->dev = c->dev;
nc->flag = c->flag;
nc->mnt = c->mnt;
return nc;
}
int
devwalk(Chan *c, char *name, Dirtab *tab, int ntab, Devgen *gen)
{
long i;
Dir dir;
isdir(c);
if(name[0]=='.' && name[1]==0)
return 1;
for(i=0;; i++)
switch((*gen)(c, tab, ntab, i, &dir)){
case -1:
u->error.type = 0;
u->error.dev = 0;
u->error.code = Enonexist;
return 0;
case 0:
continue;
case 1:
if(strcmp(name, dir.name) == 0){
c->qid = dir.qid;
return 1;
}
continue;
}
}
void
devstat(Chan *c, char *db, Dirtab *tab, int ntab, Devgen *gen)
{
int i;
Dir dir;
for(i=0;; i++)
switch((*gen)(c, tab, ntab, i, &dir)){
case -1:
/*
* devices with interesting directories usually don't get
* here, which is good because we've lost the name by now.
*/
if(c->qid & CHDIR){
devdir(c, c->qid, ".", 0L, CHDIR|0700, &dir);
convD2M(&dir, db);
return;
}
panic("devstat");
case 0:
break;
case 1:
if(c->qid == dir.qid){
convD2M(&dir, db);
return;
}
break;
}
}
long
devdirread(Chan *c, char *d, long n, Dirtab *tab, int ntab, Devgen *gen)
{
long k, l, m;
Dir dir;
k = c->offset/DIRLEN;
l = (c->offset+n)/DIRLEN;
n = 0;
for(m=k; m<l; k++)
switch((*gen)(c, tab, ntab, k, &dir)){
case -1:
return n;
case 0:
c->offset += DIRLEN;
break;
case 1:
convD2M(&dir, d);
n += DIRLEN;
d += DIRLEN;
m++;
break;
}
return n;
}
Chan *
devopen(Chan *c, int omode, Dirtab *tab, int ntab, Devgen *gen)
{
int i;
Dir dir;
static int access[] = { 0400, 0200, 0600, 0100 };
for(i=0;; i++)
switch((*gen)(c, tab, ntab, i, &dir)){
case -1:
/* Deal with union directories? */
goto Return;
case 0:
break;
case 1:
if(c->qid == dir.qid){
if((access[omode&3] & dir.mode) == access[omode&3])
goto Return;
error(0, Eperm);
}
break;
}
Return:
c->offset = 0;
if((c->qid&CHDIR) && omode!=OREAD)
error(0, Eperm);
c->mode = openmode(omode);
c->flag |= COPEN;
return c;
}
.
## diffname port/dev.c 1990/0303
## diff -e /n/bootesdump/1990/0227/sys/src/9/mips/dev.c /n/bootesdump/1990/0303/sys/src/9/mips/dev.c
78a
nc->mchan = c->mchan;
nc->mqid = c->mqid;
.
## diffname port/dev.c 1990/0329
## diff -e /n/bootesdump/1990/0303/sys/src/9/mips/dev.c /n/bootesdump/1990/0329/sys/src/9/mips/dev.c
69a
if(c->flag & COPEN)
panic("clone of open file type %c\n", devchar[c->type]);
.
## diffname port/dev.c 1990/0821
## diff -e /n/bootesdump/1990/0329/sys/src/9/mips/dev.c /n/bootesdump/1990/0821/sys/src/9/mips/dev.c
168c
return m;
.
165d
163c
m += DIRLEN;
.
155c
return m;
.
150,152c
for(m=0; m<n; k++)
.
146c
long k, m;
.
## diffname port/dev.c 1990/11211
## diff -e /n/bootesdump/1990/0821/sys/src/9/mips/dev.c /n/bootesdump/1990/11211/sys/src/9/mips/dev.c
192,193c
if((c->qid.path&CHDIR) && omode!=OREAD)
error(Eperm);
.
186c
error(Eperm);
.
183c
if(eqqid(c->qid, dir.qid)){
.
135c
if(eqqid(c->qid, dir.qid)){
.
126c
if(c->qid.path & CHDIR){
.
98,100c
strncpy(u->error, errstrtab[Enonexist], NAMELEN);
.
62c
c->qid = (Qid){CHDIR, 0};
.
42,43c
memcpy(db->uid, user, NAMELEN);
memcpy(db->gid, user, NAMELEN);
.
34c
if(qid.path & CHDIR)
.
28c
devdir(Chan *c, Qid qid, char *n, long length, long perm, Dir *db)
.
7d
## diffname port/dev.c 1991/0318
## diff -e /n/bootesdump/1990/1210/sys/src/9/mips/dev.c /n/bootesdump/1991/0318/sys/src/9/port/dev.c
41,42c
memmove(db->uid, user, NAMELEN);
memmove(db->gid, user, NAMELEN);
.
## diffname port/dev.c 1991/0411
## diff -e /n/bootesdump/1991/0318/sys/src/9/port/dev.c /n/bootesdump/1991/0411/sys/src/9/port/dev.c
109a
int devclwalk(Chan *c, Chan *nc, char *name, Dirtab *tab, int ntab, Devgen *gen)
{
c = devclone(c, nc);
return devwalk(c, name, tab, ntab, gen);
}
.
## diffname port/dev.c 1991/0414
## diff -e /n/bootesdump/1991/0411/sys/src/9/port/dev.c /n/bootesdump/1991/0414/sys/src/9/port/dev.c
112,113c
Chan *nc;
nc = 0;
if(waserror()){
if(nc)
close(nc);
return 0;
}
nc = (*devtab[c->type].clone)(c, 0);
(*devtab[nc->type].walk)(nc, name);
poperror();
return nc;
.
110c
Chan*
devclwalk(Chan *c, char *name)
.
## diffname port/dev.c 1991/0421
## diff -e /n/bootesdump/1991/0414/sys/src/9/port/dev.c /n/bootesdump/1991/0421/sys/src/9/port/dev.c
122c
if((*devtab[nc->type].walk)(nc, name) == 0){
close(nc);
nc = 0;
}
.
79a
nc->aux = c->aux;
.
77d
73a
nc->dev = c->dev;
.
## diffname port/dev.c 1991/0427
## diff -e /n/bootesdump/1991/0421/sys/src/9/port/dev.c /n/bootesdump/1991/0427/sys/src/9/port/dev.c
109,128d
79a
nc->mountid = c->mountid;
.
## diffname port/dev.c 1991/0626
## diff -e /n/bootesdump/1991/0427/sys/src/9/port/dev.c /n/bootesdump/1991/0626/sys/src/9/port/dev.c
130c
print("devstat %c %lux\n", devchar[c->type], c->qid.path);
error(Enonexist);
.
## diffname port/dev.c 1991/1109
## diff -e /n/bootesdump/1991/0626/sys/src/9/port/dev.c /n/bootesdump/1991/1109/sys/src/9/port/dev.c
126c
devdir(c, c->qid, ".", 0L, eve, CHDIR|0700, &dir);
.
51c
devdir(c, tab->qid, tab->name, tab->length, eve, tab->perm, dp);
.
27c
devdir(Chan *c, Qid qid, char *n, long length, char *user, long perm, Dir *db)
.
## diffname port/dev.c 1991/1112
## diff -e /n/bootesdump/1991/1109/sys/src/9/port/dev.c /n/bootesdump/1991/1112/sys/src/9/port/dev.c
183,184c
if(eqqid(c->qid, dir.qid)) {
if(strcmp(u->p->user, dir.uid) == 0) /* User */
mode = dir.mode;
else if(strcmp(u->p->user, eve) == 0) /* Bootes is group */
mode = dir.mode<<3;
else
mode = dir.mode<<6; /* Other */
t = access[omode&3];
if((t & mode) == t)
.
172a
ulong t, mode;
.
41,42c
strncpy(db->uid, user, NAMELEN);
strncpy(db->gid, eve, NAMELEN);
.
## diffname port/dev.c 1991/1120
## diff -e /n/bootesdump/1991/1112/sys/src/9/port/dev.c /n/bootesdump/1991/1120/sys/src/9/port/dev.c
130c
print("%s %s: devstat %c %lux\n", u->p->text, u->p->user,
devchar[c->type], c->qid.path);
.
## diffname port/dev.c 1991/1206
## diff -e /n/bootesdump/1991/1120/sys/src/9/port/dev.c /n/bootesdump/1991/1206/sys/src/9/port/dev.c
188c
else if(strcmp(u->p->user, eve) == 0) /* eve is group */
.
180d
122,123c
* given a channel, we cannot derive the directory name
* that the channel was generated from since it was lost
* by namec.
.
## diffname port/dev.c 1991/1220
## diff -e /n/bootesdump/1991/1206/sys/src/9/port/dev.c /n/bootesdump/1991/1220/sys/src/9/port/dev.c
38c
db->mtime = kerndate;
.
11a
extern ulong kerndate;
.
## diffname port/dev.c 1992/0111
## diff -e /n/bootesdump/1991/1220/sys/src/9/port/dev.c /n/bootesdump/1992/0111/sys/src/9/port/dev.c
101c
strncpy(u->error, Enonexist, NAMELEN);
.
6c
#include "../port/error.h"
.
## diffname port/dev.c 1992/0321
## diff -e /n/bootesdump/1992/0111/sys/src/9/port/dev.c /n/bootesdump/1992/0321/sys/src/9/port/dev.c
2c
#include "../port/lib.h"
.
## diffname port/dev.c 1992/0520
## diff -e /n/bootesdump/1992/0321/sys/src/9/port/dev.c /n/bootesdump/1992/0520/sys/src/9/port/dev.c
111a
return 1; /* not reached */
.
## diffname port/dev.c 1992/0619
## diff -e /n/bootesdump/1992/0520/sys/src/9/port/dev.c /n/bootesdump/1992/0619/sys/src/9/port/dev.c
10,11d
## diffname port/dev.c 1992/0711
## diff -e /n/bootesdump/1992/0619/sys/src/9/port/dev.c /n/bootesdump/1992/0711/sys/src/9/port/dev.c
59a
USED(spec);
.
## diffname port/dev.c 1992/1217
## diff -e /n/bootesdump/1992/0711/sys/src/9/port/dev.c /n/bootesdump/1992/1217/sys/src/9/port/dev.c
133c
print("%s %s: devstat %C %lux\n", u->p->text, u->p->user,
.
71c
panic("clone of open file type %C\n", devchar[c->type]);
.
23c
if(user)
return -1;
panic("devno %C 0x%ux", c, c);
return 0;
.
17,21c
s = devchar;
i = 0;
while(*s){
if(c == *s)
return i;
i++;
s++;
.
15c
Rune *s;
int i;
.
## diffname port/dev.c 1993/0321
## diff -e /n/bootesdump/1992/1217/sys/src/9/port/dev.c /n/bootesdump/1993/0321/sys/src/9/port/dev.c
151a
}
.
146c
if(eqqid(c->qid, dir.qid)) {
.
143,144d
141c
devchar[c->type], c->qid.path);
.
128a
case 0:
break;
.
127c
for(i=0;; i++) {
.
## diffname port/dev.c 1993/0323
## diff -e /n/bootesdump/1993/0321/sys/src/9/port/dev.c /n/bootesdump/1993/0323/sys/src/9/port/dev.c
146a
if(c->flag&CMSG)
dir.mode |= CHMOUNT;
.
43a
if(c->flag&CMSG)
db->mode |= CHMOUNT;
.
## diffname port/dev.c 1993/0330
## diff -e /n/bootesdump/1993/0323/sys/src/9/port/dev.c /n/bootesdump/1993/0330/sys/src/9/port/dev.c
156d
148c
if(eqqid(c->qid, dir.qid)){
.
146a
case 0:
break;
.
145c
devchar[c->type], c->qid.path);
.
140c
devdir(c, c->qid, ".", 0L, eve, CHDIR|0775, &dir);
.
131,132d
129c
for(i=0;; i++)
.
## diffname port/dev.c 1993/0501
## diff -e /n/bootesdump/1993/0330/sys/src/9/port/dev.c /n/fornaxdump/1993/0501/sys/src/brazil/port/dev.c
213c
}
Return:
.
204c
mode = dir.mode<<6;
.
201c
else
if(strcmp(up->user, eve) == 0)
.
199c
if(strcmp(up->user, dir.uid) == 0)
.
191c
for(i=0;; i++) {
.
179a
}
.
165c
for(m=0; m<n; k++) {
.
148c
if(eqqid(c->qid, dir.qid)) {
.
142,143c
print("%s %s: devstat %C %lux\n", up->text, up->user,
devchar[c->type], c->qid.path);
.
138c
devdir(c, c->qid, c->path->elem, i*DIRLEN, eve, CHDIR|0700, &dir);
.
132,136c
/*
* given a channel, we cannot derive the directory name
* that the channel was generated from since it was lost
* by namec.
*/
.
120c
}
return 0; /* not reached */
.
115a
op = c->path;
c->path = ptenter(&syspt, op, name);
decref(op);
.
109c
strncpy(up->error, Enonexist, NAMELEN);
.
106c
for(i=0;; i++) {
.
101a
Path *op;
.
93a
nc->path = c->path;
incref(nc->path);
.
82a
.
80a
.
72a
if(tc != 'M') {
sprint(buf, "#%C%s", tc, spec);
c->path = ptenter(&syspt, 0, buf);
}
.
67a
char buf[NAMELEN+4];
.
## diffname port/dev.c 1993/0525
## diff -e /n/fornaxdump/1993/0501/sys/src/brazil/port/dev.c /n/fornaxdump/1993/0525/sys/src/brazil/port/dev.c
152c
devdir(c, c->qid, c->path->elem, i*DIRLEN, eve, CHDIR|0555, &dir);
.
## diffname port/dev.c 1993/0725
## diff -e /n/fornaxdump/1993/0525/sys/src/brazil/port/dev.c /n/fornaxdump/1993/0725/sys/src/brazil/port/dev.c
146,150d
## diffname port/dev.c 1993/1013
## diff -e /n/fornaxdump/1993/0725/sys/src/brazil/port/dev.c /n/fornaxdump/1993/1013/sys/src/brazil/port/dev.c
100a
nc->mcp = c->mcp;
.
## diffname port/dev.c 1993/1210
## diff -e /n/fornaxdump/1993/1013/sys/src/brazil/port/dev.c /n/fornaxdump/1993/1210/sys/src/brazil/port/dev.c
50,51c
memmove(db->uid, user, NAMELEN);
memmove(db->gid, eve, NAMELEN);
.
## diffname port/dev.c 1995/0108
## diff -e /n/fornaxdump/1993/1210/sys/src/brazil/port/dev.c /n/fornaxdump/1995/0108/sys/src/brazil/port/dev.c
234a
Block*
devbread(Chan *c, long n, ulong offset)
{
Block *bp;
bp = allocb(n);
if(bp == 0)
error(Enomem);
if(waserror()) {
freeb(bp);
nexterror();
}
bp->wp += devtab[c->type].read(c, bp->wp, n, offset);
poperror();
return bp;
}
long
devbwrite(Chan *c, Block *bp, ulong offset)
{
long n;
n = devtab[c->type].write(c, bp->rp, BLEN(bp), offset);
freeb(bp);
return n;
}
.
## diffname port/dev.c 1995/0804
## diff -e /n/fornaxdump/1995/0108/sys/src/brazil/port/dev.c /n/fornaxdump/1995/0804/sys/src/brazil/port/dev.c
70d
## diffname port/dev.c 1995/0811
## diff -e /n/fornaxdump/1995/0804/sys/src/brazil/port/dev.c /n/fornaxdump/1995/0811/sys/src/brazil/port/dev.c
7d
## diffname port/dev.c 1996/0223
## diff -e /n/fornaxdump/1995/0811/sys/src/brazil/port/dev.c /n/fornaxdump/1996/0223/sys/src/brazil/port/dev.c
7d
## diffname port/dev.c 1997/0327
## diff -e /n/fornaxdump/1996/0223/sys/src/brazil/port/dev.c /n/emeliedump/1997/0327/sys/src/brazil/port/dev.c
260a
void
devremove(Chan*)
{
error(Eperm);
}
void
devwstat(Chan*, char*)
{
error(Eperm);
}
.
255c
n = devtab[c->type]->write(c, bp->rp, BLEN(bp), offset);
.
245c
bp->wp += devtab[c->type]->read(c, bp->wp, n, offset);
.
232a
void
devcreate(Chan*, char*, int, ulong)
{
error(Eperm);
}
.
192c
Chan*
.
149,150c
print("%s %s: devstat %C %lux\n",
up->text, up->user,
devchar[c->type], c->qid.path);
.
132c
return 0;
.
78c
Chan*
.
62c
void
devreset(void)
{
}
void
devinit(void)
{
}
Chan*
.
## diffname port/dev.c 1997/0408
## diff -e /n/emeliedump/1997/0327/sys/src/brazil/port/dev.c /n/emeliedump/1997/0408/sys/src/brazil/port/dev.c
161c
devtab[c->type]->dc, c->qid.path);
.
92c
panic("clone of open file type %C\n", devtab[c->type]->dc);
.
36c
db->type = devtab[c->type]->dc;
.
25,28c
return -1;
.
23a
if(user == 0)
panic("devno %C 0x%ux", c, c);
.
21,22d
16,19c
for(i = 0; devtab[i] != nil; i++) {
if(devtab[i]->dc == c)
.
13d
## diffname port/dev.c 1998/0319
## diff -e /n/emeliedump/1997/0408/sys/src/brazil/port/dev.c /n/emeliedump/1998/0319/sys/src/brazil/port/dev.c
40,41c
db->length1 = length; /* BOTCH */
db->length2 = length; /* BOTCH */
.
## diffname port/dev.c 1998/0326
## diff -e /n/emeliedump/1998/0319/sys/src/brazil/port/dev.c /n/emeliedump/1998/0326/sys/src/brazil/port/dev.c
40,41c
db->length = length;
.
26c
devdir(Chan *c, Qid qid, char *n, vlong length, char *user, long perm, Dir *db)
.
## diffname port/dev.c 1998/0512
## diff -e /n/emeliedump/1998/0326/sys/src/brazil/port/dev.c /n/emeliedump/1998/0512/sys/src/brazil/port/dev.c
269c
return n;
.
238c
void
.
## diffname port/dev.c 1998/0829
## diff -e /n/emeliedump/1998/0512/sys/src/brazil/port/dev.c /n/emeliedump/1998/0829/sys/src/brazil/port/dev.c
96c
nc->mh = c->mh;
if(c->mh != nil)
incref(c->mh);
.
## diffname port/dev.c 1999/0122
## diff -e /n/emeliedump/1998/0829/sys/src/brazil/port/dev.c /n/emeliedump/1999/0122/sys/src/brazil/port/dev.c
214c
if(c->qid.path == dir.qid.path) {
.
162c
if(c->qid.path == dir.qid.path) {
.
## diffname port/dev.c 1999/0629
## diff -e /n/emeliedump/1999/0122/sys/src/brazil/port/dev.c /n/emeliedump/1999/0629/sys/src/brazil/port/dev.c
150c
if(c->name == nil)
elem = "???";
else
for(elem=p=c->name->s; *p; p++)
if(*p = '/')
elem = p+1;
devdir(c, c->qid, elem, i*DIRLEN, eve, CHDIR|0555, &dir);
.
144a
char *p, *elem;
.
129,131d
114d
104,105c
if(c->name)
incref(c->name);
.
74,77c
sprint(buf, "#%C%s", tc, spec==nil? "" : spec);
free(c->name);
c->name = newcname(buf);
.
## diffname port/dev.c 1999/0630
## diff -e /n/emeliedump/1999/0629/sys/src/brazil/port/dev.c /n/emeliedump/1999/0630/sys/src/brazil/port/dev.c
103,104d
75d
## diffname port/dev.c 1999/0710
## diff -e /n/emeliedump/1999/0630/sys/src/brazil/port/dev.c /n/emeliedump/1999/0710/sys/src/brazil/port/dev.c
144a
else if(strcmp(c->name->s, "/") == 0)
elem = "/";
.
## diffname port/dev.c 1999/0724
## diff -e /n/emeliedump/1999/0710/sys/src/brazil/port/dev.c /n/emeliedump/1999/0724/sys/src/brazil/port/dev.c
149c
if(*p == '/')
.
## diffname port/dev.c 1999/1230
## diff -e /n/emeliedump/1999/0724/sys/src/brazil/port/dev.c /n/emeliedump/1999/1230/sys/src/9/port/dev.c
113a
if(name[0]=='.' && name[1]=='.' && name[2]==0){
(*gen)(c, tab, ntab, DEVDOTDOT, &dir);
c->qid = dir.qid;
return 1;
}
.
50c
if(i!=DEVDOTDOT){
if(i>=ntab)
return -1;
tab += i;
}
.
48c
if(tab==0)
.
44a
//
// the zeroth element of the table MUST be the directory itself for ..
//
.
## diffname port/dev.c 2000/0716
## diff -e /n/emeliedump/1999/1230/sys/src/9/port/dev.c /n/emeliedump/2000/0716/sys/src/9/port/dev.c
163c
devdir(c, c->qid, elem, 0, eve, CHDIR|0555, &dir);
.
## diffname port/dev.c 2000/0718
## diff -e /n/emeliedump/2000/0716/sys/src/9/port/dev.c /n/emeliedump/2000/0718/sys/src/9/port/dev.c
228,239c
devpermcheck(dir.uid, dir.mode, omode);
goto Return;
.
217,218d
211a
/*
* error(Eperm) if open permission not granted for up->user.
*/
void
devpermcheck(char *fileuid, ulong perm, int omode)
{
ulong t;
static int access[] = { 0400, 0200, 0600, 0100 };
if(strcmp(up->user, fileuid) == 0)
perm <<= 0;
else
if(strcmp(up->user, eve) == 0)
perm <<= 3;
else
perm <<= 6;
t = access[omode&3];
if((t&perm) != t)
error(Eperm);
}
.
## diffname port/dev.c 2000/0817
## diff -e /n/emeliedump/2000/0718/sys/src/9/port/dev.c /n/emeliedump/2000/0817/sys/src/9/port/dev.c
291a
poperror();
.
290a
if(waserror()) {
freeb(bp);
nexterror();
}
.
## diffname port/dev.c 2001/0527
## diff -e /n/emeliedump/2000/0817/sys/src/9/port/dev.c /n/emeliedump/2001/0527/sys/src/9/port/dev.c
311a
return 0;
.
308,309c
int
devwstat(Chan*, uchar*, int)
.
256c
if((c->qid.type&QTDIR) && omode!=OREAD)
.
241c
switch((*gen)(c, nil, tab, ntab, i, &dir)){
.
202,204c
dsz = convD2M(&dir, (uchar*)d, n-m);
if(dsz <= BIT16SZ){ /* <= not < because this isn't stat; read is stuck */
if(m == 0)
return -1;
return m;
}
m += dsz;
d += dsz;
.
198c
c->offset++; /* BUG??? (was DIRLEN: skip entry) */
.
193c
switch((*gen)(c, nil, tab, ntab, k, &dir)){
.
191c
k = c->offset;
.
188,189c
long k, m, dsz;
struct{
Dir;
char slop[100];
}dir;
.
182a
error(Egreg); /* not reached? */
return -1;
.
177,179c
dir.mode |= DMMOUNT;
n = convD2M(&dir, db, n);
if(n == 0)
error(Ebadarg);
return n;
.
167c
print("%s %s: devstat %C %llux\n",
.
163,165c
devdir(c, c->qid, elem, 0, eve, DMDIR|0555, &dir);
n = convD2M(&dir, db, n);
if(n == 0)
error(Ebadarg);
return n;
.
154c
if(c->qid.type & QTDIR){
.
152c
switch((*gen)(c, nil, tab, ntab, i, &dir)){
.
144,145c
int
devstat(Chan *c, uchar *db, int n, Dirtab *tab, int ntab, Devgen *gen)
.
141c
/*
* We processed at least one name, so will return some data.
* If we didn't process all nname entries succesfully, we drop
* the cloned channel and return just the Qids of the walks.
*/
Done:
poperror();
if(wq->nqid < nname){
if(alloc)
cclose(wq->clone);
wq->clone = nil;
}else if(wq->clone){
/* attach cloned channel to same device */
wq->clone->type = c->type;
}
return wq;
.
138d
133,136c
}
if(strcmp(n, "..") == 0){
(*gen)(nc, nil, tab, ntab, DEVDOTDOT, &dir);
nc->qid = dir.qid;
goto Accept;
}
/*
* Ugly problem: If we're using devgen, make sure we're
* walking the directory itself, represented by the first
* entry in the table, and not trying to step into a sub-
* directory of the table, e.g. /net/net. Devgen itself
* should take care of the problem, but it doesn't have
* the necessary information (that we're doing a walk).
*/
if(gen==devgen && nc->qid.path!=tab[0].qid.path)
goto Notfound;
for(i=0;; i++) {
switch((*gen)(nc, n, tab, ntab, i, &dir)){
case -1:
Notfound:
if(j == 0)
error(Enonexist);
strncpy(up->error, Enonexist, ERRMAX);
goto Done;
case 0:
continue;
case 1:
if(strcmp(n, dir.name) == 0){
nc->qid = dir.qid;
goto Accept;
}
continue;
.
126,131c
wq->clone = nc;
for(j=0; j<nname; j++){
isdir(nc);
n = name[j];
if(strcmp(n, ".") == 0){
Accept:
wq->qid[wq->nqid++] = nc->qid;
.
118,124c
if(nname > 0)
isdir(c);
// print("devwalk (%d:%c:%p) ", nname, devtab[c->type]->dc, nc);
// for(i=0; i<nname; i++)
// print("%s/", name[i]);
// print("\n");
//delay(500);
alloc = 0;
wq = smalloc(sizeof(Walkqid)+(nname-1)*sizeof(Qid));
if(waserror()){
if(alloc && wq->clone!=nil)
cclose(wq->clone);
free(wq);
return nil;
}
if(nc == nil){
nc = devclone(c);
nc->type = 0; /* device doesn't know about this channel yet */
alloc = 1;
.
115c
int i, j, alloc;
Walkqid *wq;
char *n;
.
112,113c
Walkqid*
devwalk(Chan *c, Chan *nc, char **name, int nname, Dirtab *tab, int ntab, Devgen *gen)
.
100,103c
nc->umh = nil;
.
92,93c
nc = newchan();
.
88a
Chan *nc;
.
87c
devclone(Chan *c)
.
85a
.
82a
free(buf);
.
81c
if(spec == nil)
spec = "";
buf = smalloc(4+strlen(spec)+1);
sprint(buf, "#%C%s", tc, spec);
.
79c
mkqid(&c->qid, 0, 0, QTDIR);
.
76c
char *buf;
.
53,54c
if(i != DEVDOTDOT){
/* skip over the first element, that for . itself */
i++;
if(i >= ntab)
.
51c
if(tab == 0)
.
49c
devgen(Chan *c, char*, Dirtab *tab, int ntab, int i, Dir *dp)
.
45,47c
/*
* the zeroth element of the table MUST be the directory itself for ..
*/
.
41,42c
db->uid = user;
db->gid = eve;
db->muid = user;
.
32,37c
db->mode = perm;
db->mode |= qid.type << 24;
.
28c
db->name = n;
if(c->flag&CMSG)
qid.type |= QTMOUNT;
.
9a
void
mkqid(Qid *q, vlong path, ulong vers, int type)
{
q->type = type;
q->vers = vers;
q->path = path;
}
.
## diffname port/dev.c 2001/0819
## diff -e /n/emeliedump/2001/0527/sys/src/9/port/dev.c /n/emeliedump/2001/0819/sys/src/9/port/dev.c
134,139d
118d
## diffname port/dev.c 2001/0820
## diff -e /n/emeliedump/2001/0819/sys/src/9/port/dev.c /n/emeliedump/2001/0820/sys/src/9/port/dev.c
37,38d
## diffname port/dev.c 2001/0822
## diff -e /n/emeliedump/2001/0820/sys/src/9/port/dev.c /n/emeliedump/2001/0822/sys/src/9/port/dev.c
270d
263,265c
for(m=0; m<n; c->dri++) {
switch((*gen)(c, nil, tab, ntab, c->dri, &dir)){
.
257c
long m, dsz;
.
## diffname port/dev.c 2001/0904
## diff -e /n/emeliedump/2001/0822/sys/src/9/port/dev.c /n/emeliedump/2001/0904/sys/src/9/port/dev.c
36a
if(c->flag&CMSG)
qid.type |= QTMOUNT;
.
## diffname port/dev.c 2001/0905
## diff -e /n/emeliedump/2001/0904/sys/src/9/port/dev.c /n/emeliedump/2001/0905/sys/src/9/port/dev.c
390a
void
devpower(int)
{
error(Eperm);
}
int
devconfig(int, char *, DevConf *)
{
error(Eperm);
return 0;
}
.
## diffname port/dev.c 2001/0924
## diff -e /n/emeliedump/2001/0905/sys/src/9/port/dev.c /n/emeliedump/2001/0924/sys/src/9/port/dev.c
178c
kstrcpy(up->errstr, Enonexist, ERRMAX);
.
## diffname port/dev.c 2002/0104
## diff -e /n/emeliedump/2001/0924/sys/src/9/port/dev.c /n/emeliedump/2002/0104/sys/src/9/port/dev.c
150c
if(!(nc->qid.type&QTDIR)){
if(j==0)
error(Enotdir);
goto Done;
}
.
## diffname port/dev.c 2002/0109
## diff -e /n/emeliedump/2002/0104/sys/src/9/port/dev.c /n/emeliedump/2002/0109/sys/src/9/port/dev.c
80a
void
devshutdown(void)
{
}
.
## diffname port/dev.c 2002/0925
## diff -e /n/emeliedump/2002/0109/sys/src/9/port/dev.c /n/emeliedump/2002/0925/sys/src/9/port/dev.c
286c
error(Eshort);
.
## diffname port/dev.c 2002/1222
## diff -e /n/emeliedump/2002/0925/sys/src/9/port/dev.c /n/emeliedump/2002/1222/sys/src/9/port/dev.c
54a
int devdebug;
.
52a
* (here, Devgen is the prototype; devgen is the function in dev.c.)
*
* a Devgen is expected to return the directory entry for ".."
* if you pass it s==DEVDOTDOT (-1). otherwise...
*
* there are two contradictory rules.
*
* (i) if c is a directory, a Devgen is expected to list its children
* as you iterate s.
*
* (ii) whether or not c is a directory, a Devgen is expected to list
* its siblings as you iterate s.
*
* devgen always returns the list of children in the root
* directory. thus it follows (i) when c is the root and (ii) otherwise.
* many other Devgens follow (i) when c is a directory and (ii) otherwise.
*
* devwalk assumes (i). it knows that devgen breaks (i)
* for children that are themselves directories, and explicitly catches them.
*
* devstat assumes (ii). if the Devgen in question follows (i)
* for this particular c, devstat will not find the necessary info.
* with our particular Devgen functions, this happens only for
* directories, so devstat makes something up, assuming
* c->name, c->qid, eve, DMDIR|0555.
*
* devdirread assumes (i). the callers have to make sure
* that the Devgen satisfies (i) for the chan being read.
*/
/*
.
## diffname port/dev.c 2003/0108
## diff -e /n/emeliedump/2002/1222/sys/src/9/port/dev.c /n/emeliedump/2003/0108/sys/src/9/port/dev.c
85d
## diffname port/dev.c 2003/0325
## diff -e /n/emeliedump/2003/0108/sys/src/9/port/dev.c /n/emeliedump/2003/0325/sys/src/9/port/dev.c
90c
if(i == DEVDOTDOT){
/* nothing */
}else if(name){
for(i=1; i<ntab; i++)
if(strcmp(tab[i].name, name) == 0)
break;
if(i==ntab)
return -1;
tab += i;
}else{
.
86c
devgen(Chan *c, char *name, Dirtab *tab, int ntab, int i, Dir *dp)
.
## diffname port/dev.c 2003/0329
## diff -e /n/emeliedump/2003/0325/sys/src/9/port/dev.c /n/emeliedump/2003/0329/sys/src/9/port/dev.c
206c
if((*gen)(nc, nil, tab, ntab, DEVDOTDOT, &dir) != 1){
print("devgen walk .. in dev%s %llux broken\n",
devtab[nc->type]->name, nc->qid.path);
error("broken devgen");
}
.
|
