From: David Woodhouse <dwmw2@infradead.org>
Date: Sat, 20 May 2006 16:27:32 +0000 (+0100)
Subject: Merge git://git.infradead.org/jffs2-xattr-2.6
X-Git-Tag: v2.6.18-rc1~1105^2~74^2~13
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=0cfc7da3ff4b39a3aac261ab3f6b1329e2485653;p=linux-2.6-omap-h63xx.git

Merge git://git.infradead.org/jffs2-xattr-2.6

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
---

0cfc7da3ff4b39a3aac261ab3f6b1329e2485653
diff --cc fs/jffs2/scan.c
index 2a24b44662b,5847e76ce16..40d62d057aa
--- a/fs/jffs2/scan.c
+++ b/fs/jffs2/scan.c
@@@ -306,12 -306,142 +306,143 @@@ int jffs2_scan_classify_jeb(struct jffs
  		return BLK_STATE_ALLDIRTY;
  }
  
+ #ifdef CONFIG_JFFS2_FS_XATTR
+ static int jffs2_scan_xattr_node(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
+ 				 struct jffs2_raw_xattr *rx, uint32_t ofs,
+ 				 struct jffs2_summary *s)
+ {
+ 	struct jffs2_xattr_datum *xd;
+ 	struct jffs2_raw_node_ref *raw;
+ 	uint32_t totlen, crc;
+ 
+ 	crc = crc32(0, rx, sizeof(struct jffs2_raw_xattr) - 4);
+ 	if (crc != je32_to_cpu(rx->node_crc)) {
+ 		if (je32_to_cpu(rx->node_crc) != 0xffffffff)
+ 			JFFS2_WARNING("node CRC failed at %#08x, read=%#08x, calc=%#08x\n",
+ 				      ofs, je32_to_cpu(rx->node_crc), crc);
+ 		DIRTY_SPACE(je32_to_cpu(rx->totlen));
+ 		return 0;
+ 	}
+ 
+ 	totlen = PAD(sizeof(*rx) + rx->name_len + 1 + je16_to_cpu(rx->value_len));
+ 	if (totlen != je32_to_cpu(rx->totlen)) {
+ 		JFFS2_WARNING("node length mismatch at %#08x, read=%u, calc=%u\n",
+ 			      ofs, je32_to_cpu(rx->totlen), totlen);
+ 		DIRTY_SPACE(je32_to_cpu(rx->totlen));
+ 		return 0;
+ 	}
+ 
+ 	raw =  jffs2_alloc_raw_node_ref();
+ 	if (!raw)
+ 		return -ENOMEM;
+ 
+ 	xd = jffs2_setup_xattr_datum(c, je32_to_cpu(rx->xid), je32_to_cpu(rx->version));
+ 	if (IS_ERR(xd)) {
+ 		jffs2_free_raw_node_ref(raw);
+ 		if (PTR_ERR(xd) == -EEXIST) {
+ 			DIRTY_SPACE(PAD(je32_to_cpu(rx->totlen)));
+ 			return 0;
+ 		}
+ 		return PTR_ERR(xd);
+ 	}
+ 	xd->xprefix = rx->xprefix;
+ 	xd->name_len = rx->name_len;
+ 	xd->value_len = je16_to_cpu(rx->value_len);
+ 	xd->data_crc = je32_to_cpu(rx->data_crc);
+ 	xd->node = raw;
+ 
+ 	raw->__totlen = totlen;
+ 	raw->flash_offset = ofs | REF_PRISTINE;
+ 	raw->next_phys = NULL;
+ 	raw->next_in_ino = (void *)xd;
+ 	if (!jeb->first_node)
+ 		jeb->first_node = raw;
+ 	if (jeb->last_node)
+ 		jeb->last_node->next_phys = raw;
+ 	jeb->last_node = raw;
+ 
+ 	USED_SPACE(PAD(je32_to_cpu(rx->totlen)));
+ 	if (jffs2_sum_active())
+ 		jffs2_sum_add_xattr_mem(s, rx, ofs - jeb->offset);
+ 	dbg_xattr("scaning xdatum at %#08x (xid=%u, version=%u)\n",
+ 		  ofs, xd->xid, xd->version);
+ 	return 0;
+ }
+ 
+ static int jffs2_scan_xref_node(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
+ 				struct jffs2_raw_xref *rr, uint32_t ofs,
+ 				struct jffs2_summary *s)
+ {
+ 	struct jffs2_xattr_ref *ref;
+ 	struct jffs2_raw_node_ref *raw;
+ 	uint32_t crc;
+ 
+ 	crc = crc32(0, rr, sizeof(*rr) - 4);
+ 	if (crc != je32_to_cpu(rr->node_crc)) {
+ 		if (je32_to_cpu(rr->node_crc) != 0xffffffff)
+ 			JFFS2_WARNING("node CRC failed at %#08x, read=%#08x, calc=%#08x\n",
+ 				      ofs, je32_to_cpu(rr->node_crc), crc);
+ 		DIRTY_SPACE(PAD(je32_to_cpu(rr->totlen)));
+ 		return 0;
+ 	}
+ 
+ 	if (PAD(sizeof(struct jffs2_raw_xref)) != je32_to_cpu(rr->totlen)) {
+ 		JFFS2_WARNING("node length mismatch at %#08x, read=%u, calc=%u\n",
+ 			      ofs, je32_to_cpu(rr->totlen),
+ 			      PAD(sizeof(struct jffs2_raw_xref)));
+ 		DIRTY_SPACE(je32_to_cpu(rr->totlen));
+ 		return 0;
+ 	}
+ 
+ 	ref = jffs2_alloc_xattr_ref();
+ 	if (!ref)
+ 		return -ENOMEM;
+ 
+ 	raw =  jffs2_alloc_raw_node_ref();
+ 	if (!raw) {
+ 		jffs2_free_xattr_ref(ref);
+ 		return -ENOMEM;
+ 	}
+ 
+ 	/* BEFORE jffs2_build_xattr_subsystem() called, 
+ 	 * ref->xid is used to store 32bit xid, xd is not used
+ 	 * ref->ino is used to store 32bit inode-number, ic is not used
+ 	 * Thoes variables are declared as union, thus using those
+ 	 * are exclusive. In a similar way, ref->next is temporarily
+ 	 * used to chain all xattr_ref object. It's re-chained to
+ 	 * jffs2_inode_cache in jffs2_build_xattr_subsystem() correctly.
+ 	 */
+ 	ref->node = raw;
+ 	ref->ino = je32_to_cpu(rr->ino);
+ 	ref->xid = je32_to_cpu(rr->xid);
+ 	ref->next = c->xref_temp;
+ 	c->xref_temp = ref;
+ 
+ 	raw->__totlen = PAD(je32_to_cpu(rr->totlen));
+ 	raw->flash_offset = ofs | REF_PRISTINE;
+ 	raw->next_phys = NULL;
+ 	raw->next_in_ino = (void *)ref;
+ 	if (!jeb->first_node)
+ 		jeb->first_node = raw;
+ 	if (jeb->last_node)
+ 		jeb->last_node->next_phys = raw;
+ 	jeb->last_node = raw;
+ 
+ 	USED_SPACE(PAD(je32_to_cpu(rr->totlen)));	
+ 	if (jffs2_sum_active())
+ 		jffs2_sum_add_xref_mem(s, rr, ofs - jeb->offset);
+ 	dbg_xattr("scan xref at %#08x (xid=%u, ino=%u)\n",
+ 		  ofs, ref->xid, ref->ino);
+ 	return 0;
+ }
+ #endif
+ 
 +/* Called with 'buf_size == 0' if buf is in fact a pointer _directly_ into
 +   the flash, XIP-style */
  static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
 -				unsigned char *buf, uint32_t buf_size, struct jffs2_summary *s) {
 +				  unsigned char *buf, uint32_t buf_size, struct jffs2_summary *s) {
  	struct jffs2_unknown_node *node;
  	struct jffs2_unknown_node crcnode;
 -	struct jffs2_sum_marker *sm;
  	uint32_t ofs, prevofs;
  	uint32_t hdr_crc, buf_ofs, buf_len;
  	int err;
diff --cc fs/jffs2/summary.c
index 82a3706c54d,439b9f6d583..5dbe87b67ab
--- a/fs/jffs2/summary.c
+++ b/fs/jffs2/summary.c
@@@ -402,9 -489,103 +483,102 @@@ static int jffs2_sum_process_sum_data(s
  
  				break;
  			}
+ #ifdef CONFIG_JFFS2_FS_XATTR
+ 			case JFFS2_NODETYPE_XATTR: {
+ 				struct jffs2_xattr_datum *xd;
+ 				struct jffs2_sum_xattr_flash *spx;
+ 				uint32_t ofs;
+ 
+ 				spx = (struct jffs2_sum_xattr_flash *)sp;
+ 				ofs = jeb->offset + je32_to_cpu(spx->offset);
+ 				dbg_summary("xattr at %#08x (xid=%u, version=%u)\n", ofs,
+ 					    je32_to_cpu(spx->xid), je32_to_cpu(spx->version));
+ 				raw = jffs2_alloc_raw_node_ref();
+ 				if (!raw) {
+ 					JFFS2_NOTICE("allocation of node reference failed\n");
+ 					kfree(summary);
+ 					return -ENOMEM;
+ 				}
+ 				xd = jffs2_setup_xattr_datum(c, je32_to_cpu(spx->xid),
+ 								je32_to_cpu(spx->version));
+ 				if (IS_ERR(xd)) {
+ 					jffs2_free_raw_node_ref(raw);
+ 					if (PTR_ERR(xd) == -EEXIST) {
+ 						/* a newer version of xd exists */
+ 						DIRTY_SPACE(je32_to_cpu(spx->totlen));
+ 						sp += JFFS2_SUMMARY_XATTR_SIZE;
+ 						break;
+ 					}
+ 					JFFS2_NOTICE("allocation of xattr_datum failed\n");
+ 					kfree(summary);
+ 					return PTR_ERR(xd);
+ 				}
+ 				xd->node = raw;
+ 
+ 				raw->flash_offset = ofs | REF_UNCHECKED;
+ 				raw->__totlen = PAD(je32_to_cpu(spx->totlen));
+ 				raw->next_phys = NULL;
+ 				raw->next_in_ino = (void *)xd;
+ 				if (!jeb->first_node)
+ 					jeb->first_node = raw;
+ 				if (jeb->last_node)
+ 					jeb->last_node->next_phys = raw;
+ 				jeb->last_node = raw;
+ 
+ 				*pseudo_random += je32_to_cpu(spx->xid);
+ 				UNCHECKED_SPACE(je32_to_cpu(spx->totlen));
+ 				sp += JFFS2_SUMMARY_XATTR_SIZE;
+ 
+ 				break;
+ 			}
+ 			case JFFS2_NODETYPE_XREF: {
+ 				struct jffs2_xattr_ref *ref;
+ 				struct jffs2_sum_xref_flash *spr;
+ 				uint32_t ofs;
+ 
+ 				spr = (struct jffs2_sum_xref_flash *)sp;
+ 				ofs = jeb->offset + je32_to_cpu(spr->offset);
+ 				dbg_summary("xref at %#08x (xid=%u, ino=%u)\n", ofs,
+ 					    je32_to_cpu(spr->xid), je32_to_cpu(spr->ino));
+ 				raw = jffs2_alloc_raw_node_ref();
+ 				if (!raw) {
+ 					JFFS2_NOTICE("allocation of node reference failed\n");
+ 					kfree(summary);
+ 					return -ENOMEM;
+ 				}
+ 				ref = jffs2_alloc_xattr_ref();
+ 				if (!ref) {
+ 					JFFS2_NOTICE("allocation of xattr_datum failed\n");
+ 					jffs2_free_raw_node_ref(raw);
+ 					kfree(summary);
+ 					return -ENOMEM;
+ 				}
+ 				ref->ino = 0xfffffffe;
+ 				ref->xid = 0xfffffffd;
+ 				ref->node = raw;
+ 				ref->next = c->xref_temp;
+ 				c->xref_temp = ref;
+ 
+ 				raw->__totlen = PAD(sizeof(struct jffs2_raw_xref));
+ 				raw->flash_offset = ofs | REF_UNCHECKED;
+ 				raw->next_phys = NULL;
+ 				raw->next_in_ino = (void *)ref;
+ 				if (!jeb->first_node)
+ 					jeb->first_node = raw;
+ 				if (jeb->last_node)
+ 					jeb->last_node->next_phys = raw;
+ 				jeb->last_node = raw;
+ 
+ 				UNCHECKED_SPACE(PAD(sizeof(struct jffs2_raw_xref)));
+ 				*pseudo_random += ofs;
+ 				sp += JFFS2_SUMMARY_XREF_SIZE;
  
+ 				break;
+ 			}
+ #endif
  			default : {
+ printk("nodetype = %#04x\n",je16_to_cpu(((struct jffs2_sum_unknown_flash *)sp)->nodetype));
  				JFFS2_WARNING("Unsupported node type found in summary! Exiting...");
 -				kfree(summary);
  				return -EIO;
  			}
  		}
diff --cc fs/jffs2/summary.h
index afff4bd551a,a3b66c18aae..ce892d57ad5
--- a/fs/jffs2/summary.h
+++ b/fs/jffs2/summary.h
@@@ -159,9 -197,10 +197,11 @@@ int jffs2_sum_write_sumnode(struct jffs
  int jffs2_sum_add_padding_mem(struct jffs2_summary *s, uint32_t size);
  int jffs2_sum_add_inode_mem(struct jffs2_summary *s, struct jffs2_raw_inode *ri, uint32_t ofs);
  int jffs2_sum_add_dirent_mem(struct jffs2_summary *s, struct jffs2_raw_dirent *rd, uint32_t ofs);
+ int jffs2_sum_add_xattr_mem(struct jffs2_summary *s, struct jffs2_raw_xattr *rx, uint32_t ofs);
+ int jffs2_sum_add_xref_mem(struct jffs2_summary *s, struct jffs2_raw_xref *rr, uint32_t ofs);
  int jffs2_sum_scan_sumnode(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
 -			uint32_t ofs, uint32_t *pseudo_random);
 +			   struct jffs2_raw_summary *summary, uint32_t sumlen,
 +			   uint32_t *pseudo_random);
  
  #else				/* SUMMARY DISABLED */