shithub: gefs

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pack: add flags field to xdir

we'll want it for features like small file opt,
unix symlinks, and other similar stuff.

--- a/dat.h

+++ b/dat.h

@@ -174,7 +174,7 @@

  * and refcount blocks.

  *

  * The superblock has this layout:

- *	version[8]	always "gefs0002"

+ *	version[8]	always "gefsNNNNN"

  *	blksz[4]	block size in bytes

  *	bufsz[4]	portion of leaf nodes

  *			allocated to buffers,

@@ -525,6 +525,7 @@

 struct Xdir {

 	/* file data */

+	uvlong	flag;	/* storage flags */

 	Qid	qid;	/* unique id from server */

 	ulong	mode;	/* permissions */

 	vlong	atime;	/* last read time: nsec */

--- a/pack.c

+++ b/pack.c

@@ -203,6 +203,7 @@

 	err = 0;

 	e = p + sz;

+	p = pack64(&err, p, e, d->flag);

 	p = pack64(&err, p, e, d->qid.path);

 	p = pack32(&err, p, e, d->qid.vers);

 	p = pack8(&err, p, e, d->qid.type);

@@ -236,6 +237,7 @@

 	v = kv->v;

 	ev = v + kv->nv;

+	v = unpack64(&err, v, ev, &d->flag);

 	v = unpack64(&err, v, ev, &d->qid.path);

 	v = unpack32(&err, v, ev, &d->qid.vers);

 	v = unpack8(&err, v, ev, &d->qid.type);

@@ -522,7 +524,7 @@

 packarena(char *p, int sz, Arena *a, Fshdr *fi)

 {

 	assert(sz == Blksz);

-	memcpy(p, "gefs0003", 8);	p += 8;

+	memcpy(p, "gefs0004", 8);	p += 8;

 	PACK32(p, Blksz);		p += 4;

 	PACK32(p, Bufspc);		p += 4;

 	PACK32(p, fi->snap.ht);		p += 4;

@@ -545,7 +547,7 @@

 	assert(sz == Blksz);

 	memset(a, 0, sizeof(*a));

 	memset(fi, 0, sizeof(*fi));

-	if(memcmp(p, "gefs0003", 8) != 0){

+	if(memcmp(p, "gefs0004", 8) != 0){

 		werrstr("wrong block header %.8s\n", p);

 		return nil;

 	}