#include <linux/completion.h>
#include <linux/buffer_head.h>
#include <linux/namei.h>
-#include <linux/utsname.h>
#include <linux/mm.h>
#include <linux/xattr.h>
#include <linux/posix_acl.h>
#include "acl.h"
#include "bmap.h"
#include "dir.h"
-#include "eaops.h"
-#include "eattr.h"
+#include "xattr.h"
#include "glock.h"
#include "inode.h"
#include "meta_io.h"
return error;
}
+/*
+ * gfs2_unlink_ok - check to see that a inode is still in a directory
+ * @dip: the directory
+ * @name: the name of the file
+ * @ip: the inode
+ *
+ * Assumes that the lock on (at least) @dip is held.
+ *
+ * Returns: 0 if the parent/child relationship is correct, errno if it isn't
+ */
+
+static int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name,
+ const struct gfs2_inode *ip)
+{
+ int error;
+
+ if (IS_IMMUTABLE(&ip->i_inode) || IS_APPEND(&ip->i_inode))
+ return -EPERM;
+
+ if ((dip->i_inode.i_mode & S_ISVTX) &&
+ dip->i_inode.i_uid != current_fsuid() &&
+ ip->i_inode.i_uid != current_fsuid() && !capable(CAP_FOWNER))
+ return -EPERM;
+
+ if (IS_APPEND(&dip->i_inode))
+ return -EPERM;
+
+ error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC);
+ if (error)
+ return error;
+
+ error = gfs2_dir_check(&dip->i_inode, name, ip);
+ if (error)
+ return error;
+
+ return 0;
+}
+
/**
* gfs2_unlink - Unlink a file
* @dir: The inode of the directory containing the file to unlink
error = gfs2_trans_begin(sdp, 2*RES_DINODE + RES_LEAF + RES_RG_BIT, 0);
if (error)
- goto out_rgrp;
+ goto out_gunlock;
error = gfs2_dir_del(dip, &dentry->d_name);
if (error)
}
/**
+ * gfs2_readlinki - return the contents of a symlink
+ * @ip: the symlink's inode
+ * @buf: a pointer to the buffer to be filled
+ * @len: a pointer to the length of @buf
+ *
+ * If @buf is too small, a piece of memory is kmalloc()ed and needs
+ * to be freed by the caller.
+ *
+ * Returns: errno
+ */
+
+static int gfs2_readlinki(struct gfs2_inode *ip, char **buf, unsigned int *len)
+{
+ struct gfs2_holder i_gh;
+ struct buffer_head *dibh;
+ unsigned int x;
+ int error;
+
+ gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &i_gh);
+ error = gfs2_glock_nq(&i_gh);
+ if (error) {
+ gfs2_holder_uninit(&i_gh);
+ return error;
+ }
+
+ if (!ip->i_disksize) {
+ gfs2_consist_inode(ip);
+ error = -EIO;
+ goto out;
+ }
+
+ error = gfs2_meta_inode_buffer(ip, &dibh);
+ if (error)
+ goto out;
+
+ x = ip->i_disksize + 1;
+ if (x > *len) {
+ *buf = kmalloc(x, GFP_NOFS);
+ if (!*buf) {
+ error = -ENOMEM;
+ goto out_brelse;
+ }
+ }
+
+ memcpy(*buf, dibh->b_data + sizeof(struct gfs2_dinode), x);
+ *len = x;
+
+out_brelse:
+ brelse(dibh);
+out:
+ gfs2_glock_dq_uninit(&i_gh);
+ return error;
+}
+
+/**
* gfs2_readlink - Read the value of a symlink
* @dentry: the symlink
* @buf: the buffer to read the symlink data into
const void *data, size_t size, int flags)
{
struct inode *inode = dentry->d_inode;
- struct gfs2_ea_request er;
-
- memset(&er, 0, sizeof(struct gfs2_ea_request));
- er.er_type = gfs2_ea_name2type(name, &er.er_name);
- if (er.er_type == GFS2_EATYPE_UNUSED)
- return -EOPNOTSUPP;
- er.er_data = (char *)data;
- er.er_name_len = strlen(er.er_name);
- er.er_data_len = size;
- er.er_flags = flags;
-
- gfs2_assert_warn(GFS2_SB(inode), !(er.er_flags & GFS2_ERF_MODE));
+ struct gfs2_inode *ip = GFS2_I(inode);
+ struct gfs2_holder gh;
+ int ret;
- return gfs2_ea_set(GFS2_I(inode), &er);
+ gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
+ ret = gfs2_glock_nq(&gh);
+ if (ret == 0) {
+ ret = generic_setxattr(dentry, name, data, size, flags);
+ gfs2_glock_dq(&gh);
+ }
+ gfs2_holder_uninit(&gh);
+ return ret;
}
static ssize_t gfs2_getxattr(struct dentry *dentry, const char *name,
void *data, size_t size)
{
- struct gfs2_ea_request er;
-
- memset(&er, 0, sizeof(struct gfs2_ea_request));
- er.er_type = gfs2_ea_name2type(name, &er.er_name);
- if (er.er_type == GFS2_EATYPE_UNUSED)
- return -EOPNOTSUPP;
- er.er_data = data;
- er.er_name_len = strlen(er.er_name);
- er.er_data_len = size;
-
- return gfs2_ea_get(GFS2_I(dentry->d_inode), &er);
-}
-
-static ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size)
-{
- struct gfs2_ea_request er;
-
- memset(&er, 0, sizeof(struct gfs2_ea_request));
- er.er_data = (size) ? buffer : NULL;
- er.er_data_len = size;
+ struct inode *inode = dentry->d_inode;
+ struct gfs2_inode *ip = GFS2_I(inode);
+ struct gfs2_holder gh;
+ int ret;
- return gfs2_ea_list(GFS2_I(dentry->d_inode), &er);
+ gfs2_holder_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
+ ret = gfs2_glock_nq(&gh);
+ if (ret == 0) {
+ ret = generic_getxattr(dentry, name, data, size);
+ gfs2_glock_dq(&gh);
+ }
+ gfs2_holder_uninit(&gh);
+ return ret;
}
static int gfs2_removexattr(struct dentry *dentry, const char *name)
{
- struct gfs2_ea_request er;
-
- memset(&er, 0, sizeof(struct gfs2_ea_request));
- er.er_type = gfs2_ea_name2type(name, &er.er_name);
- if (er.er_type == GFS2_EATYPE_UNUSED)
- return -EOPNOTSUPP;
- er.er_name_len = strlen(er.er_name);
+ struct inode *inode = dentry->d_inode;
+ struct gfs2_inode *ip = GFS2_I(inode);
+ struct gfs2_holder gh;
+ int ret;
- return gfs2_ea_remove(GFS2_I(dentry->d_inode), &er);
+ gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
+ ret = gfs2_glock_nq(&gh);
+ if (ret == 0) {
+ ret = generic_removexattr(dentry, name);
+ gfs2_glock_dq(&gh);
+ }
+ gfs2_holder_uninit(&gh);
+ return ret;
}
static int gfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff