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authorKaiGai Kohei <kaigai@ak.jp.nec.com>2006-05-13 15:09:47 +0900
committerKaiGai Kohei <kaigai@ak.jp.nec.com>2006-05-13 15:09:47 +0900
commitaa98d7cf59b5b0764d3502662053489585faf2fe (patch)
treee98e83f3e69ebe3a1112394a19d440419e899749 /fs/jffs2/dir.c
parent4992a9e88886b0c5ebc3d27eb74d0344c873eeea (diff)
downloadop-kernel-dev-aa98d7cf59b5b0764d3502662053489585faf2fe.zip
op-kernel-dev-aa98d7cf59b5b0764d3502662053489585faf2fe.tar.gz
[JFFS2][XATTR] XATTR support on JFFS2 (version. 5)
This attached patches provide xattr support including POSIX-ACL and SELinux support on JFFS2 (version.5). There are some significant differences from previous version posted at last December. The biggest change is addition of EBS(Erase Block Summary) support. Currently, both kernel and usermode utility (sumtool) can recognize xattr nodes which have JFFS2_NODETYPE_XATTR/_XREF nodetype. In addition, some bugs are fixed. - A potential race condition was fixed. - Unexpected fail when updating a xattr by same name/value pair was fixed. - A bug when removing xattr name/value pair was fixed. The fundamental structures (such as using two new nodetypes and exclusion mechanism by rwsem) are unchanged. But most of implementation were reviewed and updated if necessary. Espacially, we had to change several internal implementations related to load_xattr_datum() to avoid a potential race condition. [1/2] xattr_on_jffs2.kernel.version-5.patch [2/2] xattr_on_jffs2.utils.version-5.patch Signed-off-by: KaiGai Kohei <kaigai@ak.jp.nec.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Diffstat (limited to 'fs/jffs2/dir.c')
-rw-r--r--fs/jffs2/dir.c62
1 files changed, 56 insertions, 6 deletions
diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c
index 1c8e8c0..f1b18b9 100644
--- a/fs/jffs2/dir.c
+++ b/fs/jffs2/dir.c
@@ -57,7 +57,12 @@ struct inode_operations jffs2_dir_inode_operations =
.rmdir = jffs2_rmdir,
.mknod = jffs2_mknod,
.rename = jffs2_rename,
+ .permission = jffs2_permission,
.setattr = jffs2_setattr,
+ .setxattr = jffs2_setxattr,
+ .getxattr = jffs2_getxattr,
+ .listxattr = jffs2_listxattr,
+ .removexattr = jffs2_removexattr
};
/***********************************************************************/
@@ -209,12 +214,15 @@ static int jffs2_create(struct inode *dir_i, struct dentry *dentry, int mode,
ret = jffs2_do_create(c, dir_f, f, ri,
dentry->d_name.name, dentry->d_name.len);
- if (ret) {
- make_bad_inode(inode);
- iput(inode);
- jffs2_free_raw_inode(ri);
- return ret;
- }
+ if (ret)
+ goto fail;
+
+ ret = jffs2_init_security(inode, dir_i);
+ if (ret)
+ goto fail;
+ ret = jffs2_init_acl(inode, dir_i);
+ if (ret)
+ goto fail;
dir_i->i_mtime = dir_i->i_ctime = ITIME(je32_to_cpu(ri->ctime));
@@ -224,6 +232,12 @@ static int jffs2_create(struct inode *dir_i, struct dentry *dentry, int mode,
D1(printk(KERN_DEBUG "jffs2_create: Created ino #%lu with mode %o, nlink %d(%d). nrpages %ld\n",
inode->i_ino, inode->i_mode, inode->i_nlink, f->inocache->nlink, inode->i_mapping->nrpages));
return 0;
+
+ fail:
+ make_bad_inode(inode);
+ iput(inode);
+ jffs2_free_raw_inode(ri);
+ return ret;
}
/***********************************************************************/
@@ -374,6 +388,18 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
up(&f->sem);
jffs2_complete_reservation(c);
+
+ ret = jffs2_init_security(inode, dir_i);
+ if (ret) {
+ jffs2_clear_inode(inode);
+ return ret;
+ }
+ ret = jffs2_init_acl(inode, dir_i);
+ if (ret) {
+ jffs2_clear_inode(inode);
+ return ret;
+ }
+
ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen,
ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
if (ret) {
@@ -504,6 +530,18 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode)
up(&f->sem);
jffs2_complete_reservation(c);
+
+ ret = jffs2_init_security(inode, dir_i);
+ if (ret) {
+ jffs2_clear_inode(inode);
+ return ret;
+ }
+ ret = jffs2_init_acl(inode, dir_i);
+ if (ret) {
+ jffs2_clear_inode(inode);
+ return ret;
+ }
+
ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen,
ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
if (ret) {
@@ -660,6 +698,18 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de
up(&f->sem);
jffs2_complete_reservation(c);
+
+ ret = jffs2_init_security(inode, dir_i);
+ if (ret) {
+ jffs2_clear_inode(inode);
+ return ret;
+ }
+ ret = jffs2_init_acl(inode, dir_i);
+ if (ret) {
+ jffs2_clear_inode(inode);
+ return ret;
+ }
+
ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen,
ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
if (ret) {
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