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

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Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
David Woodhouse
2006-05-20 17:27:32 +01:00
parent 1417fc44ee 20a92fc74c
commit 0cfc7da3ff
29 changed files with 2822 additions and 15 deletions
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198
fs/jffs2/summary.c
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@ -5,6 +5,7 @@
* Zoltan Sogor <weth@inf.u-szeged.hu>,
* Patrik Kluba <pajko@halom.u-szeged.hu>,
* University of Szeged, Hungary
* 2005 KaiGai Kohei <kaigai@ak.jp.nec.com>
*
* For licensing information, see the file 'LICENCE' in this directory.
*
@ -81,6 +82,19 @@ static int jffs2_sum_add_mem(struct jffs2_summary *s, union jffs2_sum_mem *item)
dbg_summary("dirent (%u) added to summary\n",
je32_to_cpu(item->d.ino));
break;
#ifdef CONFIG_JFFS2_FS_XATTR
case JFFS2_NODETYPE_XATTR:
s->sum_size += JFFS2_SUMMARY_XATTR_SIZE;
s->sum_num++;
dbg_summary("xattr (xid=%u, version=%u) added to summary\n",
je32_to_cpu(item->x.xid), je32_to_cpu(item->x.version));
break;
case JFFS2_NODETYPE_XREF:
s->sum_size += JFFS2_SUMMARY_XREF_SIZE;
s->sum_num++;
dbg_summary("xref added to summary\n");
break;
#endif
default:
JFFS2_WARNING("UNKNOWN node type %u\n",
je16_to_cpu(item->u.nodetype));
@ -141,6 +155,40 @@ int jffs2_sum_add_dirent_mem(struct jffs2_summary *s, struct jffs2_raw_dirent *r
return jffs2_sum_add_mem(s, (union jffs2_sum_mem *)temp);
}
#ifdef CONFIG_JFFS2_FS_XATTR
int jffs2_sum_add_xattr_mem(struct jffs2_summary *s, struct jffs2_raw_xattr *rx, uint32_t ofs)
{
struct jffs2_sum_xattr_mem *temp;
temp = kmalloc(sizeof(struct jffs2_sum_xattr_mem), GFP_KERNEL);
if (!temp)
return -ENOMEM;
temp->nodetype = rx->nodetype;
temp->xid = rx->xid;
temp->version = rx->version;
temp->offset = cpu_to_je32(ofs);
temp->totlen = rx->totlen;
temp->next = NULL;
return jffs2_sum_add_mem(s, (union jffs2_sum_mem *)temp);
}
int jffs2_sum_add_xref_mem(struct jffs2_summary *s, struct jffs2_raw_xref *rr, uint32_t ofs)
{
struct jffs2_sum_xref_mem *temp;
temp = kmalloc(sizeof(struct jffs2_sum_xref_mem), GFP_KERNEL);
if (!temp)
return -ENOMEM;
temp->nodetype = rr->nodetype;
temp->offset = cpu_to_je32(ofs);
temp->next = NULL;
return jffs2_sum_add_mem(s, (union jffs2_sum_mem *)temp);
}
#endif
/* Cleanup every collected summary information */
static void jffs2_sum_clean_collected(struct jffs2_summary *s)
@ -259,7 +307,40 @@ int jffs2_sum_add_kvec(struct jffs2_sb_info *c, const struct kvec *invecs,
return jffs2_sum_add_mem(c->summary, (union jffs2_sum_mem *)temp);
}
#ifdef CONFIG_JFFS2_FS_XATTR
case JFFS2_NODETYPE_XATTR: {
struct jffs2_sum_xattr_mem *temp;
if (je32_to_cpu(node->x.version) == 0xffffffff)
return 0;
temp = kmalloc(sizeof(struct jffs2_sum_xattr_mem), GFP_KERNEL);
if (!temp)
goto no_mem;
temp->nodetype = node->x.nodetype;
temp->xid = node->x.xid;
temp->version = node->x.version;
temp->totlen = node->x.totlen;
temp->offset = cpu_to_je32(ofs);
temp->next = NULL;
return jffs2_sum_add_mem(c->summary, (union jffs2_sum_mem *)temp);
}
case JFFS2_NODETYPE_XREF: {
struct jffs2_sum_xref_mem *temp;
if (je32_to_cpu(node->r.ino) == 0xffffffff
&& je32_to_cpu(node->r.xid) == 0xffffffff)
return 0;
temp = kmalloc(sizeof(struct jffs2_sum_xref_mem), GFP_KERNEL);
if (!temp)
goto no_mem;
temp->nodetype = node->r.nodetype;
temp->offset = cpu_to_je32(ofs);
temp->next = NULL;
return jffs2_sum_add_mem(c->summary, (union jffs2_sum_mem *)temp);
}
#endif
case JFFS2_NODETYPE_PADDING:
dbg_summary("node PADDING\n");
c->summary->sum_padded += je32_to_cpu(node->u.totlen);
@ -402,8 +483,101 @@ static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eras
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...");
return -EIO;
}
@ -593,7 +767,31 @@ static int jffs2_sum_write_data(struct jffs2_sb_info *c, struct jffs2_eraseblock
break;
}
#ifdef CONFIG_JFFS2_FS_XATTR
case JFFS2_NODETYPE_XATTR: {
struct jffs2_sum_xattr_flash *sxattr_ptr = wpage;
temp = c->summary->sum_list_head;
sxattr_ptr->nodetype = temp->x.nodetype;
sxattr_ptr->xid = temp->x.xid;
sxattr_ptr->version = temp->x.version;
sxattr_ptr->offset = temp->x.offset;
sxattr_ptr->totlen = temp->x.totlen;
wpage += JFFS2_SUMMARY_XATTR_SIZE;
break;
}
case JFFS2_NODETYPE_XREF: {
struct jffs2_sum_xref_flash *sxref_ptr = wpage;
temp = c->summary->sum_list_head;
sxref_ptr->nodetype = temp->r.nodetype;
sxref_ptr->offset = temp->r.offset;
wpage += JFFS2_SUMMARY_XREF_SIZE;
break;
}
#endif
default : {
BUG(); /* unknown node in summary information */
}