1996/0223/port/dev.c (diff list | history)

1990/0227/sys/src/9/port/dev.c:76,81 – 1990/0303/sys/src/9/port/dev.c:76,83 (short | long)
1990/0227		nc->dev = c->dev; nc->flag = c->flag; nc->mnt = c->mnt;
1990/0303		nc->mchan = c->mchan; nc->mqid = c->mqid;
1990/0227		return nc; }
1990/0303/sys/src/9/port/dev.c:67,72 – 1990/0329/sys/src/9/port/dev.c:67,74 (short | long)
1990/0227		Chan * devclone(Chan *c, Chan *nc) {
1990/0329		if(c->flag & COPEN) panic("clone of open file type %c\n", devchar[c->type]);
1990/0227		if(nc == 0) nc = newchan(); nc->type = c->type;
1990/0329/sys/src/9/port/dev.c:143,158 – 1990/0821/sys/src/9/port/dev.c:143,156 (short | long)
1990/0227		long devdirread(Chan *c, char *d, long n, Dirtab *tab, int ntab, Devgen *gen) { long k, l, m;
1990/0821		long k, m;
1990/0227		Dir dir; k = c->offset/DIRLEN; l = (c->offset+n)/DIRLEN; n = 0; for(m=k; m<l; k++)
1990/0821		for(m=0; m<n; k++)
1990/0227		switch((*gen)(c, tab, ntab, k, &dir)){ case -1: return n;
1990/0821		return m;
1990/0227		case 0: c->offset += DIRLEN;
1990/0329/sys/src/9/port/dev.c:160,171 – 1990/0821/sys/src/9/port/dev.c:158,168
1990/0227		case 1: convD2M(&dir, d); n += DIRLEN;
1990/0821		m += DIRLEN;
1990/0227		d += DIRLEN; m++; break; } return n;
1990/0821		return m;
1990/0227		} Chan *
1990/0821/sys/src/9/port/dev.c:4,10 – 1990/11211/sys/src/9/port/dev.c:4,9 (short | long)
1990/0227		#include "dat.h" #include "fns.h" #include "errno.h"                  #define DEVTAB #include "devtab.h"
1990/0821/sys/src/9/port/dev.c:25,37 – 1990/11211/sys/src/9/port/dev.c:24,36
1990/0227		} void devdir(Chan *c, long qid, char *n, long length, long perm, Dir *db)
1990/11211		devdir(Chan *c, Qid qid, char *n, long length, long perm, Dir *db)
1990/0227		{ strcpy(db->name, n); db->qid = qid; db->type = devchar[c->type]; db->dev = c->dev; if(qid & CHDIR)
1990/11211		if(qid.path & CHDIR)
1990/0227		db->mode = CHDIR|perm; else db->mode = perm;
1990/0821/sys/src/9/port/dev.c:39,46 – 1990/11211/sys/src/9/port/dev.c:38,45
1990/0227		db->mtime = db->atime; db->hlength = 0; db->length = length; db->uid = 0; db->gid = 0;
1990/11211		memcpy(db->uid, user, NAMELEN); memcpy(db->gid, user, NAMELEN);
1990/0227		} int
1990/0821/sys/src/9/port/dev.c:59,65 – 1990/11211/sys/src/9/port/dev.c:58,64
1990/0227		Chan *c; c = newchan(); c->qid = CHDIR;
1990/11211		c->qid = (Qid){CHDIR, 0};
1990/0227		c->type = devno(tc, 0); return c; }
1990/0821/sys/src/9/port/dev.c:95,103 – 1990/11211/sys/src/9/port/dev.c:94,100
1990/0227		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;
1990/11211		strncpy(u->error, errstrtab[Enonexist], NAMELEN);
1990/0227		return 0; case 0: continue;
1990/0821/sys/src/9/port/dev.c:123,129 – 1990/11211/sys/src/9/port/dev.c:120,126
1990/0227		* devices with interesting directories usually don't get * here, which is good because we've lost the name by now. */ if(c->qid & CHDIR){
1990/11211		if(c->qid.path & CHDIR){
1990/0227		devdir(c, c->qid, ".", 0L, CHDIR|0700, &dir); convD2M(&dir, db); return;
1990/0821/sys/src/9/port/dev.c:132,138 – 1990/11211/sys/src/9/port/dev.c:129,135
1990/0227		case 0: break; case 1: if(c->qid == dir.qid){
1990/11211		if(eqqid(c->qid, dir.qid)){
1990/0227		convD2M(&dir, db); return; }
1990/0821/sys/src/9/port/dev.c:180,196 – 1990/11211/sys/src/9/port/dev.c:177,193
1990/0227		case 0: break; case 1: if(c->qid == dir.qid){
1990/11211		if(eqqid(c->qid, dir.qid)){
1990/0227		if((access[omode&3] & dir.mode) == access[omode&3]) goto Return; error(0, Eperm);
1990/11211		error(Eperm);
1990/0227		} break; } Return: c->offset = 0; if((c->qid&CHDIR) && omode!=OREAD) error(0, Eperm);
1990/11211		if((c->qid.path&CHDIR) && omode!=OREAD) error(Eperm);
1990/0227		c->mode = openmode(omode); c->flag |= COPEN; return c;
1990/11211/sys/src/9/port/dev.c:38,45 – 1991/0318/sys/src/9/port/dev.c:38,45 (short | long)
Eliminate memcpy. rsc Fri Mar 4 12:44:25 2005
1990/0227		db->mtime = db->atime; db->hlength = 0; db->length = length;
1990/11211		memcpy(db->uid, user, NAMELEN); memcpy(db->gid, user, NAMELEN);
1991/0318		memmove(db->uid, user, NAMELEN); memmove(db->gid, user, NAMELEN);
1990/0227		} int
1991/0318/sys/src/9/port/dev.c:107,112 – 1991/0411/sys/src/9/port/dev.c:107,118 (short | long)
Add devclwalk. rsc Fri Mar 4 12:44:25 2005
1990/0227		} }
1991/0411		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); }
1990/0227		void devstat(Chan *c, char *db, Dirtab *tab, int ntab, Devgen *gen) {
1991/0411/sys/src/9/port/dev.c:107,116 – 1991/0414/sys/src/9/port/dev.c:107,127 (short | long)
Bug fix: close nc if walk errors out. rsc Fri Mar 4 12:44:25 2005
1990/0227		} }
1991/0411		int devclwalk(Chan *c, Chan *nc, char *name, Dirtab *tab, int ntab, Devgen *gen)
1991/0414		Chan* devclwalk(Chan *c, char *name)
1991/0411		{ c = devclone(c, nc); return devwalk(c, name, tab, ntab, gen);
1991/0414		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;
1991/0411		}
1990/0227		void
1991/0414/sys/src/9/port/dev.c:71,82 – 1991/0421/sys/src/9/port/dev.c:71,83 (short | long)
Copy nc->aux in devclone. Bug fix confusion: now walk is returning on error. rsc Fri Mar 4 12:44:25 2005
1990/0227		if(nc == 0) nc = newchan(); nc->type = c->type;
1991/0421		nc->dev = c->dev;
1990/0227		nc->mode = c->mode; nc->qid = c->qid; nc->offset = c->offset; nc->dev = c->dev; nc->flag = c->flag; nc->mnt = c->mnt;
1991/0421		nc->aux = c->aux;
1990/0303		nc->mchan = c->mchan; nc->mqid = c->mqid;
1990/0227		return nc;
1991/0414/sys/src/9/port/dev.c:119,125 – 1991/0421/sys/src/9/port/dev.c:120,129
1991/0414		return 0; } nc = (*devtab[c->type].clone)(c, 0); (*devtab[nc->type].walk)(nc, name);
1991/0421		if((*devtab[nc->type].walk)(nc, name) == 0){ close(nc); nc = 0; }
1991/0414		poperror(); return nc;
1991/0411		}
1991/0421/sys/src/9/port/dev.c:77,82 – 1991/0427/sys/src/9/port/dev.c:77,83 (short | long)
Copy mountid in devclone. Remove devclwalk entirely. rsc Fri Mar 4 12:44:25 2005
1990/0227		nc->offset = c->offset; nc->flag = c->flag; nc->mnt = c->mnt;
1991/0427		nc->mountid = c->mountid;
1991/0421		nc->aux = c->aux;
1990/0303		nc->mchan = c->mchan; nc->mqid = c->mqid;
1991/0421/sys/src/9/port/dev.c:106,131 – 1991/0427/sys/src/9/port/dev.c:107,112
1990/0227		} continue; } }
1991/0414		Chan* devclwalk(Chan *c, char *name)
1991/0411		{
1991/0414		Chan *nc;                  nc = 0; if(waserror()){ if(nc) close(nc); return 0; } nc = (*devtab[c->type].clone)(c, 0);
1991/0421		if((*devtab[nc->type].walk)(nc, name) == 0){ close(nc); nc = 0; }
1991/0414		poperror(); return nc;
1991/0411		}
1990/0227		void
1991/0427/sys/src/9/port/dev.c:127,133 – 1991/0626/sys/src/9/port/dev.c:127,134 (short | long)
Debugging: print when gen is broken, instead of panicking. rsc Fri Mar 4 12:44:25 2005
1990/0227		convD2M(&dir, db); return; } panic("devstat");
1991/0626		print("devstat %c %lux\n", devchar[c->type], c->qid.path); error(Enonexist);
1990/0227		case 0: break; case 1:
1991/0626/sys/src/9/port/dev.c:24,30 – 1991/1109/sys/src/9/port/dev.c:24,30 (short | long)
Add user to devdir parameters. rsc Fri Mar 4 12:44:25 2005
1990/0227		} void
1990/11211		devdir(Chan *c, Qid qid, char *n, long length, long perm, Dir *db)
1991/1109		devdir(Chan *c, Qid qid, char *n, long length, char *user, long perm, Dir *db)
1990/0227		{ strcpy(db->name, n); db->qid = qid;
1991/0626/sys/src/9/port/dev.c:48,54 – 1991/1109/sys/src/9/port/dev.c:48,54
1990/0227		if(tab==0 || i>=ntab) return -1; tab += i; devdir(c, tab->qid, tab->name, tab->length, tab->perm, dp);
1991/1109		devdir(c, tab->qid, tab->name, tab->length, eve, tab->perm, dp);
1990/0227		return 1; }
1991/0626/sys/src/9/port/dev.c:123,129 – 1991/1109/sys/src/9/port/dev.c:123,129
1990/0227		* here, which is good because we've lost the name by now. */
1990/11211		if(c->qid.path & CHDIR){
1990/0227		devdir(c, c->qid, ".", 0L, CHDIR|0700, &dir);
1991/1109		devdir(c, c->qid, ".", 0L, eve, CHDIR|0700, &dir);
1990/0227		convD2M(&dir, db); return; }
1991/1109/sys/src/9/port/dev.c:38,45 – 1991/1112/sys/src/9/port/dev.c:38,45 (short | long)
Performance: replace memmove with strncpy. Compute access modes for permission. rsc Fri Mar 4 12:44:25 2005
1990/0227		db->mtime = db->atime; db->hlength = 0; db->length = length;
1991/0318		memmove(db->uid, user, NAMELEN); memmove(db->gid, user, NAMELEN);
1991/1112		strncpy(db->uid, user, NAMELEN); strncpy(db->gid, eve, NAMELEN);
1990/0227		} int
1991/1109/sys/src/9/port/dev.c:170,175 – 1991/1112/sys/src/9/port/dev.c:170,176
1990/0227		{ int i; Dir dir;
1991/1112		ulong t, mode;
1990/0227		static int access[] = { 0400, 0200, 0600, 0100 }; for(i=0;; i++)
1991/1109/sys/src/9/port/dev.c:180,187 – 1991/1112/sys/src/9/port/dev.c:181,196
1990/0227		case 0: break; case 1:
1990/11211		if(eqqid(c->qid, dir.qid)){
1990/0227		if((access[omode&3] & dir.mode) == access[omode&3])
1991/1112		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)
1990/0227		goto Return;
1990/11211		error(Eperm);
1990/0227		}
1991/1112/sys/src/9/port/dev.c:127,133 – 1991/1120/sys/src/9/port/dev.c:127,134 (short | long)
Debugging: print more info about broken gen functions. rsc Fri Mar 4 12:44:25 2005
1990/0227		convD2M(&dir, db); return; }
1991/0626		print("devstat %c %lux\n", devchar[c->type], c->qid.path);
1991/1120		print("%s %s: devstat %c %lux\n", u->p->text, u->p->user, devchar[c->type], c->qid.path);
1991/0626		error(Enonexist);
1990/0227		case 0: break;
1991/1120/sys/src/9/port/dev.c:119,126 – 1991/1206/sys/src/9/port/dev.c:119,127 (short | long)
Comment edit. rsc Fri Mar 4 12:44:25 2005
1990/0227		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.
1991/1206		* given a channel, we cannot derive the directory name * that the channel was generated from since it was lost * by namec.
1990/0227		*/
1990/11211		if(c->qid.path & CHDIR){
1991/1109		devdir(c, c->qid, ".", 0L, eve, CHDIR|0700, &dir);
1991/1120/sys/src/9/port/dev.c:177,183 – 1991/1206/sys/src/9/port/dev.c:178,183
1990/0227		for(i=0;; i++) switch((*gen)(c, tab, ntab, i, &dir)){ case -1: /* Deal with union directories? */ goto Return; case 0: break;
1991/1120/sys/src/9/port/dev.c:185,191 – 1991/1206/sys/src/9/port/dev.c:185,191
1991/1112		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 */
1991/1206		else if(strcmp(u->p->user, eve) == 0) /* eve is group */
1991/1112		mode = dir.mode<<3; else mode = dir.mode<<6; /* Other */
1991/1206/sys/src/9/port/dev.c:9,14 – 1991/1220/sys/src/9/port/dev.c:9,16 (short | long)
Add kerndate. rsc Fri Mar 4 12:44:25 2005
1990/0227		#include "fcall.h"
1991/1220		extern ulong kerndate;
1990/0227		int devno(int c, int user) {
1991/1206/sys/src/9/port/dev.c:35,41 – 1991/1220/sys/src/9/port/dev.c:37,43
1990/0227		else db->mode = perm; db->atime = seconds(); db->mtime = db->atime;
1991/1220		db->mtime = kerndate;
1990/0227		db->hlength = 0; db->length = length;
1991/1112		strncpy(db->uid, user, NAMELEN);
1991/1220/sys/src/9/port/dev.c:3,9 – 1992/0111/sys/src/9/port/dev.c:3,9 (short | long)
Move error.h to ../port. Change errors to actual strings. rsc Fri Mar 4 12:44:25 2005
1990/0227		#include "mem.h" #include "dat.h" #include "fns.h" #include "errno.h"
1992/0111		#include "../port/error.h"
1990/0227		#define DEVTAB #include "devtab.h"
1991/1220/sys/src/9/port/dev.c:98,104 – 1992/0111/sys/src/9/port/dev.c:98,104
1990/0227		for(i=0;; i++) switch((*gen)(c, tab, ntab, i, &dir)){ case -1:
1990/11211		strncpy(u->error, errstrtab[Enonexist], NAMELEN);
1992/0111		strncpy(u->error, Enonexist, NAMELEN);
1990/0227		return 0; case 0: continue;
1992/0111/sys/src/9/port/dev.c:1,5 – 1992/0321/sys/src/9/port/dev.c:1,5 (short | long)
Move lib.h to ../port. XXX get copies of old lib.h rsc Fri Mar 4 12:44:25 2005
1990/0227		#include "u.h" #include "lib.h"
1992/0321		#include "../port/lib.h"
1990/0227		#include "mem.h" #include "dat.h" #include "fns.h"
1992/0321/sys/src/9/port/dev.c:109,114 – 1992/0520/sys/src/9/port/dev.c:109,115 (short | long)
Silence compiler warning. rsc Fri Mar 4 12:44:25 2005
1990/0227		} continue; }
1992/0520		return 1; /* not reached */
1991/0411		}
1990/0227		void
1992/0520/sys/src/9/port/dev.c:7,14 – 1992/0619/sys/src/9/port/dev.c:7,12 (short | long)
Remove "fcall.h". rsc Fri Mar 4 12:44:25 2005
1990/0227		#define DEVTAB #include "devtab.h" #include "fcall.h"
1991/1220		extern ulong kerndate;
1990/0227		int
1992/0619/sys/src/9/port/dev.c:57,62 – 1992/0711/sys/src/9/port/dev.c:57,63 (short | long)
Silence compiler warning. rsc Fri Mar 4 12:44:25 2005
1990/0227		{ Chan *c;
1992/0711		USED(spec);
1990/0227		c = newchan();
1990/11211		c->qid = (Qid){CHDIR, 0};
1990/0227		c->type = devno(tc, 0);
1992/0711/sys/src/9/port/dev.c:12,26 – 1992/1217/sys/src/9/port/dev.c:12,33 (short | long)
Change: devchar is now a Rune string rsc Fri Mar 4 12:44:25 2005
1990/0227		int devno(int c, int user) { char *s;
1992/1217		Rune *s; int i;
1990/0227		s = strchr(devchar, c); if(s==0 || c==0){ if(user) return -1; panic("devno %c 0x%ux", c, c);
1992/1217		s = devchar; i = 0; while(*s){ if(c == *s) return i; i++; s++;
1990/0227		} return s - devchar;
1992/1217		if(user) return -1; panic("devno %C 0x%ux", c, c); return 0;
1990/0227		} void
1992/0711/sys/src/9/port/dev.c:68,74 – 1992/1217/sys/src/9/port/dev.c:75,81
1990/0227		devclone(Chan *c, Chan *nc) {
1990/0329		if(c->flag & COPEN) panic("clone of open file type %c\n", devchar[c->type]);
1992/1217		panic("clone of open file type %C\n", devchar[c->type]);
1990/0227		if(nc == 0) nc = newchan(); nc->type = c->type;
1992/0711/sys/src/9/port/dev.c:130,136 – 1992/1217/sys/src/9/port/dev.c:137,143
1990/0227		convD2M(&dir, db); return; }
1991/1120		print("%s %s: devstat %c %lux\n", u->p->text, u->p->user,
1992/1217		print("%s %s: devstat %C %lux\n", u->p->text, u->p->user,
1991/1120		devchar[c->type], c->qid.path);
1991/0626		error(Enonexist);
1990/0227		case 0:
1992/1217/sys/src/9/port/dev.c:124,131 – 1993/0321/sys/src/9/port/dev.c:124,133 (short | long)
Format edit. rsc Fri Mar 4 12:44:25 2005
1990/0227		int i; Dir dir; for(i=0;; i++)
1993/0321		for(i=0;; i++) {
1990/0227		switch((*gen)(c, tab, ntab, i, &dir)){
1993/0321		case 0: break;
1990/0227		case -1: /*
1991/1206		* given a channel, we cannot derive the directory name
1992/1217/sys/src/9/port/dev.c:138,154 – 1993/0321/sys/src/9/port/dev.c:140,155
1990/0227		return; }
1992/1217		print("%s %s: devstat %C %lux\n", u->p->text, u->p->user,
1991/1120		devchar[c->type], c->qid.path);
1993/0321		devchar[c->type], c->qid.path);
1991/0626		error(Enonexist);
1990/0227		case 0: break; case 1:
1990/11211		if(eqqid(c->qid, dir.qid)){
1993/0321		if(eqqid(c->qid, dir.qid)) {
1990/0227		convD2M(&dir, db); return; } break; }
1993/0321		}
1990/0227		} long
1993/0321/sys/src/9/port/dev.c:41,46 – 1993/0323/sys/src/9/port/dev.c:41,48 (short | long)
Add CHMOUNT bit to mounted channels. rsc Fri Mar 4 12:44:25 2005
1990/0227		db->mode = CHDIR|perm; else db->mode = perm;
1993/0323		if(c->flag&CMSG) db->mode |= CHMOUNT;
1990/0227		db->atime = seconds();
1991/1220		db->mtime = kerndate;
1990/0227		db->hlength = 0;
1993/0321/sys/src/9/port/dev.c:144,149 – 1993/0323/sys/src/9/port/dev.c:146,153
1991/0626		error(Enonexist);
1990/0227		case 1:
1993/0321		if(eqqid(c->qid, dir.qid)) {
1993/0323		if(c->flag&CMSG) dir.mode |= CHMOUNT;
1990/0227		convD2M(&dir, db); return; }
1993/0323/sys/src/9/port/dev.c:126,135 – 1993/0330/sys/src/9/port/dev.c:126,133 (short | long)
Confusion over whether braces should stay. Use mode 775 not 700 for device directories. rsc Fri Mar 4 12:44:25 2005
1990/0227		int i; Dir dir;
1993/0321		for(i=0;; i++) {
1993/0330		for(i=0;; i++)
1990/0227		switch((*gen)(c, tab, ntab, i, &dir)){
1993/0321		case 0: break;
1990/0227		case -1: /*
1991/1206		* given a channel, we cannot derive the directory name
1993/0323/sys/src/9/port/dev.c:137,151 – 1993/0330/sys/src/9/port/dev.c:135,151
1991/1206		* by namec.
1990/0227		*/
1990/11211		if(c->qid.path & CHDIR){
1991/1109		devdir(c, c->qid, ".", 0L, eve, CHDIR|0700, &dir);
1993/0330		devdir(c, c->qid, ".", 0L, eve, CHDIR|0775, &dir);
1990/0227		convD2M(&dir, db); return; }
1992/1217		print("%s %s: devstat %C %lux\n", u->p->text, u->p->user,
1993/0321		devchar[c->type], c->qid.path);
1993/0330		devchar[c->type], c->qid.path);
1991/0626		error(Enonexist);
1993/0330		case 0: break;
1990/0227		case 1:
1993/0321		if(eqqid(c->qid, dir.qid)) {
1993/0330		if(eqqid(c->qid, dir.qid)){
1993/0323		if(c->flag&CMSG) dir.mode |= CHMOUNT;
1990/0227		convD2M(&dir, db);
1993/0323/sys/src/9/port/dev.c:153,159 – 1993/0330/sys/src/9/port/dev.c:153,158
1990/0227		} break; }
1993/0321		}
1990/0227		} long
1993/0330/sys/src/9/port/dev.c:65,75 – 1993/0501/sys/src/9/port/dev.c:65,80 (short | long)
Convert to Brazil: add Path, up, format edits. Directory mode back to 0700. rsc Fri Mar 4 12:44:25 2005
1990/0227		devattach(int tc, char *spec) { Chan *c;
1993/0501		char buf[NAMELEN+4];
1990/0227
1992/0711		USED(spec);
1990/0227		c = newchan();
1990/11211		c->qid = (Qid){CHDIR, 0};
1990/0227		c->type = devno(tc, 0);
1993/0501		if(tc != 'M') { sprint(buf, "#%C%s", tc, spec); c->path = ptenter(&syspt, 0, buf); }
1990/0227		return c; }
1993/0330/sys/src/9/port/dev.c:78,85 – 1993/0501/sys/src/9/port/dev.c:83,92
1990/0227		{
1990/0329		if(c->flag & COPEN)
1992/1217		panic("clone of open file type %C\n", devchar[c->type]);
1993/0501
1990/0227		if(nc == 0) nc = newchan();
1993/0501
1990/0227		nc->type = c->type;
1991/0421		nc->dev = c->dev;
1990/0227		nc->mode = c->mode;
1993/0330/sys/src/9/port/dev.c:91,96 – 1993/0501/sys/src/9/port/dev.c:98,105
1991/0421		nc->aux = c->aux;
1990/0303		nc->mchan = c->mchan; nc->mqid = c->mqid;
1993/0501		nc->path = c->path; incref(nc->path);
1990/0227		return nc; }
1993/0330/sys/src/9/port/dev.c:99,112 – 1993/0501/sys/src/9/port/dev.c:108,122
1990/0227		{ long i; Dir dir;
1993/0501		Path *op;
1990/0227		isdir(c); if(name[0]=='.' && name[1]==0) return 1; for(i=0;; i++)
1993/0501		for(i=0;; i++) {
1990/0227		switch((*gen)(c, tab, ntab, i, &dir)){ case -1:
1992/0111		strncpy(u->error, Enonexist, NAMELEN);
1993/0501		strncpy(up->error, Enonexist, NAMELEN);
1990/0227		return 0; case 0: continue;
1993/0330/sys/src/9/port/dev.c:113,123 – 1993/0501/sys/src/9/port/dev.c:123,137
1990/0227		case 1: if(strcmp(name, dir.name) == 0){ c->qid = dir.qid;
1993/0501		op = c->path; c->path = ptenter(&syspt, op, name); decref(op);
1990/0227		return 1; } continue; }
1992/0520		return 1; /* not reached */
1993/0501		} return 0; /* not reached */
1991/0411		}
1990/0227		void
1993/0330/sys/src/9/port/dev.c:129,151 – 1993/0501/sys/src/9/port/dev.c:143,165
1993/0330		for(i=0;; i++)
1990/0227		switch((*gen)(c, tab, ntab, i, &dir)){ case -1: /*
1991/1206		* given a channel, we cannot derive the directory name * that the channel was generated from since it was lost * by namec.
1990/0227		*/
1993/0501		/* * given a channel, we cannot derive the directory name * that the channel was generated from since it was lost * by namec. */
1990/11211		if(c->qid.path & CHDIR){
1993/0330		devdir(c, c->qid, ".", 0L, eve, CHDIR|0775, &dir);
1993/0501		devdir(c, c->qid, c->path->elem, i*DIRLEN, eve, CHDIR|0700, &dir);
1990/0227		convD2M(&dir, db); return; }
1992/1217		print("%s %s: devstat %C %lux\n", u->p->text, u->p->user,
1993/0330		devchar[c->type], c->qid.path);
1993/0501		print("%s %s: devstat %C %lux\n", up->text, up->user, devchar[c->type], c->qid.path);
1991/0626		error(Enonexist);
1993/0330		case 0: break;
1990/0227		case 1:
1993/0330		if(eqqid(c->qid, dir.qid)){
1993/0501		if(eqqid(c->qid, dir.qid)) {
1993/0323		if(c->flag&CMSG) dir.mode |= CHMOUNT;
1990/0227		convD2M(&dir, db);
1993/0330/sys/src/9/port/dev.c:162,168 – 1993/0501/sys/src/9/port/dev.c:176,182
1990/0227		Dir dir; k = c->offset/DIRLEN;
1990/0821		for(m=0; m<n; k++)
1993/0501		for(m=0; m<n; k++) {
1990/0227		switch((*gen)(c, tab, ntab, k, &dir)){ case -1:
1990/0821		return m;
1993/0330/sys/src/9/port/dev.c:177,182 – 1993/0501/sys/src/9/port/dev.c:191,198
1990/0227		d += DIRLEN; break; }
1993/0501		}
1990/0821		return m;
1990/0227		}
1993/0330/sys/src/9/port/dev.c:188,194 – 1993/0501/sys/src/9/port/dev.c:204,210
1991/1112		ulong t, mode;
1990/0227		static int access[] = { 0400, 0200, 0600, 0100 }; for(i=0;; i++)
1993/0501		for(i=0;; i++) {
1990/0227		switch((*gen)(c, tab, ntab, i, &dir)){ case -1: goto Return;
1993/0330/sys/src/9/port/dev.c:196,207 – 1993/0501/sys/src/9/port/dev.c:212,224
1990/0227		break; case 1:
1991/1112		if(eqqid(c->qid, dir.qid)) { if(strcmp(u->p->user, dir.uid) == 0) /* User */
1993/0501		if(strcmp(up->user, dir.uid) == 0)
1991/1112		mode = dir.mode;
1991/1206		else if(strcmp(u->p->user, eve) == 0) /* eve is group */
1993/0501		else if(strcmp(up->user, eve) == 0)
1991/1112		mode = dir.mode<<3; else mode = dir.mode<<6; /* Other */
1993/0501		mode = dir.mode<<6;
1991/1112		t = access[omode&3]; if((t & mode) == t)
1993/0330/sys/src/9/port/dev.c:210,216 – 1993/0501/sys/src/9/port/dev.c:227,234
1990/0227		} break; } Return:
1993/0501		} Return:
1990/0227		c->offset = 0;
1990/11211		if((c->qid.path&CHDIR) && omode!=OREAD) error(Eperm);
Too many diffs (26 > 25). Stopping.