1996/0203/port/devtinyfs.c (diff list | history)

1996/0202/sys/src/9/port/devtinyfs.c:28,33 – 1996/0203/sys/src/9/port/devtinyfs.c:28,36 (short | long | prev | next)
1996/0201
1996/0202		Notapin= 0xffff, Notabno= 0xffff,
1996/0203		Fcreating= 1, Frmonclose= 2,
1996/0116		};
1996/0202		/* representation of a Tdir on medium */
1996/0202/sys/src/9/port/devtinyfs.c:57,63 – 1996/0203/sys/src/9/port/devtinyfs.c:60,66
1996/0201		ushort bno; ushort dbno; ushort pin;
1996/0202		char creating;
1996/0203		uchar flag;
1996/0201		ulong length; };
1996/0202/sys/src/9/port/devtinyfs.c:271,277 – 1996/0203/sys/src/9/port/devtinyfs.c:274,280
1996/0202		expand(fs); } f->creating = 1;
1996/0203		f->flag = Fcreating;
1996/0202		f->dbno = Notabno; f->bno = mapalloc(fs);
1996/0202/sys/src/9/port/devtinyfs.c:553,572 – 1996/0203/sys/src/9/port/devtinyfs.c:556,586
1996/0202		if(c->qid.path != CHDIR){ f = &fs->f[c->qid.path]; f->r--; if(f->r == 0 && f->creating){ /* remove all other files with this name */ for(i = 0; i < fs->fsize; i++){ nf = &fs->f[i]; if(f == nf) continue; if(strcmp(nf->name, f->name) == 0) freefile(fs, nf, Notabno);
1996/0203		if(f->r == 0){ if(f->creating){ /* remove all other files with this name */ for(i = 0; i < fs->fsize; i++){ nf = &fs->f[i]; if(f == nf) continue; if(strcmp(nf->name, f->name) == 0){ if(nf->r) nf->flag |= Frmonclose; else freefile(fs, nf, Notabno); } } f->flag &= ~(Frmonclose|Fcreating);
1996/0202		}
1996/0203		if(f->flag & Frmonclose){ freefile(fs, f, Notabno);
1996/0202		} } /* dereference fs and remove on zero refs */ fs->r--;
1996/0203		unlock(fs); qlock(&tinyfs);
1996/0201		if(fs->ref == 0){ for(l = &fs->l; *l;){ if(*l == fs){
1996/0202/sys/src/9/port/devtinyfs.c:575,589 – 1996/0203/sys/src/9/port/devtinyfs.c:589,599
1996/0201		} l = &(*l)->next; } for(f = fs->f; f; f = nf){ nf = f->next; free(f); }
1996/0203		free(fs-f);
1996/0201		free(fs->map); close(fs->c); free(fs);
1996/0203		memset(fs, 0, sizeof(*fs));
1996/0201		} unlock(fs); qunlock(&tinyfs);
1996/0116		}
1996/0202/sys/src/9/port/devtinyfs.c:590,604 – 1996/0203/sys/src/9/port/devtinyfs.c:600,619
1996/0116		long tinyfsread(Chan *c, void *a, long n, ulong offset) { switch(c->qid.path & ~CHDIR){ case Qdir:
1996/0203		Tfs *fs; Tfile *f; int sofar, i; if(c->qid.path & CHDIR)
1996/0201		return devdirread(c, a, n, tinyfstab, Ntinyfstab, tinyfsgen);
1996/0116		case Qdata: break; default: n=0; break; }
1996/0203		fs = tinyfs.fs[c->dev]; f = &fs->f[c->qid.path]; if(offset >= f->length) return 0; if(n + offset >= f->length) n = f->length - offset;
1996/0116		return n; }