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linux/3.2: add symlink xattr support to ubifs 

SVN-Revision: 30794
This commit is contained in:
Gabor Juhos 2012-03-02 23:09:00 +00:00
parent 5202e9908b
commit 632db63ed0
1 changed files with 67 additions and 0 deletions
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67
target/linux/generic/patches-3.2/550-ubifs-symlink-xattr-support.patch Normal file
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@ -0,0 +1,67 @@
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -1575,6 +1575,12 @@ const struct inode_operations ubifs_syml
.follow_link = ubifs_follow_link,
.setattr = ubifs_setattr,
.getattr = ubifs_getattr,
+#ifdef CONFIG_UBIFS_FS_XATTR
+ .setxattr = ubifs_setxattr,
+ .getxattr = ubifs_getxattr,
+ .listxattr = ubifs_listxattr,
+ .removexattr = ubifs_removexattr,
+#endif
};
const struct file_operations ubifs_file_operations = {
--- a/fs/ubifs/journal.c
+++ b/fs/ubifs/journal.c
@@ -553,7 +553,8 @@ int ubifs_jnl_update(struct ubifs_info *
dbg_jnl("ino %lu, dent '%.*s', data len %d in dir ino %lu",
inode->i_ino, nm->len, nm->name, ui->data_len, dir->i_ino);
- ubifs_assert(dir_ui->data_len == 0);
+ if (!xent)
+ ubifs_assert(dir_ui->data_len == 0);
ubifs_assert(mutex_is_locked(&dir_ui->ui_mutex));
dlen = UBIFS_DENT_NODE_SZ + nm->len + 1;
@@ -573,6 +574,13 @@ int ubifs_jnl_update(struct ubifs_info *
aligned_dlen = ALIGN(dlen, 8);
aligned_ilen = ALIGN(ilen, 8);
len = aligned_dlen + aligned_ilen + UBIFS_INO_NODE_SZ;
+ if (xent) {
+ /*
+ * Make sure to account for dir_ui->data_len in
+ * length calculation in case there is extended attribute.
+ */
+ len += dir_ui->data_len;
+ }
dent = kmalloc(len, GFP_NOFS);
if (!dent)
return -ENOMEM;
@@ -649,7 +657,8 @@ int ubifs_jnl_update(struct ubifs_info *
ino_key_init(c, &ino_key, dir->i_ino);
ino_offs += aligned_ilen;
- err = ubifs_tnc_add(c, &ino_key, lnum, ino_offs, UBIFS_INO_NODE_SZ);
+ err = ubifs_tnc_add(c, &ino_key, lnum, ino_offs,
+ UBIFS_INO_NODE_SZ + dir_ui->data_len);
if (err)
goto out_ro;
--- a/fs/ubifs/xattr.c
+++ b/fs/ubifs/xattr.c
@@ -211,12 +211,12 @@ static int change_xattr(struct ubifs_inf
}
memcpy(ui->data, value, size);
inode->i_size = ui->ui_size = size;
- ui->data_len = size;
mutex_lock(&host_ui->ui_mutex);
host->i_ctime = ubifs_current_time(host);
host_ui->xattr_size -= CALC_XATTR_BYTES(ui->data_len);
host_ui->xattr_size += CALC_XATTR_BYTES(size);
+ ui->data_len = size;
/*
* It is important to write the host inode after the xattr inode