2002/0615/port/devmnt.c (diff list | history)

2002/0615/sys/src/9/port/devmnt.c:36,41 – 2002/0919/sys/src/9/port/devmnt.c:36,48 (short | long | prev | next)
2000/0105		Mntrpc* flushed; /* message this one flushes */
1990/0227		};
2002/0919		enum { TAGSHIFT = 5, /* ulong has to be 32 bits */ TAGMASK = (1<<TAGSHIFT)-1, NMASK = (64*1024)>>TAGSHIFT, };
1991/0911		struct Mntalloc
1990/0227		{ Lock;
2002/0615/sys/src/9/port/devmnt.c:45,51 – 2002/0919/sys/src/9/port/devmnt.c:52,58
1999/0212		int nrpcfree; int nrpcused;
1994/1124		ulong id;
1992/0620		int rpctag;
2002/0919		ulong tagmask[NMASK];
1991/0911		}mntalloc;
1990/0227
2001/0527		void mattach(Mnt*, Chan*, char*);
2002/0615/sys/src/9/port/devmnt.c:69,89 – 2002/0919/sys/src/9/port/devmnt.c:76,93
2001/0527		char Esbadstat[] = "invalid directory entry received from server";
2001/0819		char Enoversion[] = "version not established for mount channel";
2001/0527
2002/0919
1998/0917		void (*mntstats)(int, Chan*, uvlong, ulong);
1994/0513
1991/0911		enum
1990/0303		{
1993/1011		Tagspace = 1,
1991/0911		};
1990/0604
1997/0327		static void
1991/0911		mntreset(void)
1990/0227		{
1991/0911		mntalloc.id = 1;
1992/0620		mntalloc.rpctag = Tagspace;
2002/0919		mntalloc.tagmask[0] = 1; /* don't allow 0 as a tag */ mntalloc.tagmask[NMASK-1] = 0x80000000UL; /* don't allow NOTAG */
2002/0217		fmtinstall('F', fcallfmt); fmtinstall('D', dirfmt);
2002/0615		/* fmtinstall('M', dirmodefmt); No! Clashes with eipfmt [sape] */
2002/0919		/* We can't install %M since eipfmt does and is used in the kernel [sape] */
1993/1015		cinit();
1990/0604		}
2002/0615/sys/src/9/port/devmnt.c:997,1002 – 2002/0919/sys/src/9/port/devmnt.c:1001,1032
1990/03081		}
1991/0911		}
1991/0901
2002/0919		int alloctag(void) { int i, j; ulong v; for(i = 0; i < NMASK; i++){ v = mntalloc.tagmask[i]; if(v == ~0UL) continue; for(j = 0; j < 1<<TAGSHIFT; j++) if((v & (1<<j)) == 0){ mntalloc.tagmask[i] |= 1<<j; return (i<<TAGSHIFT) + j; } } panic("no friggin tags left"); return NOTAG; } void freetag(int t) { mntalloc.tagmask[t>>TAGSHIFT] &= ~(1<<(t&TAGMASK)); }
2001/0527		Mntrpc*
2001/0820		mntralloc(Chan *c, ulong msize)
1991/0911		{
2002/0615/sys/src/9/port/devmnt.c:1021,1027 – 2002/0919/sys/src/9/port/devmnt.c:1051,1057
1992/0620		exhausted("mount rpc buffer");
1991/0911		}
2001/0820		new->rpclen = msize;
1992/0620		new->request.tag = mntalloc.rpctag++;
2002/0919		new->request.tag = alloctag();
1991/0904		}
1999/0212		else { mntalloc.rpcfree = new->list;
2002/0615/sys/src/9/port/devmnt.c:1056,1061 – 2002/0919/sys/src/9/port/devmnt.c:1086,1092
1999/0212		if(mntalloc.nrpcfree >= 10){ free(r->rpc); free(r);
2002/0919		freetag(r->request.tag);
1999/0212		} else{ r->list = mntalloc.rpcfree;