#include "acl.h"
#include "bmap.h"
#include "dir.h"
-#include "eattr.h"
+#include "xattr.h"
#include "glock.h"
#include "glops.h"
#include "inode.h"
#include "log.h"
#include "meta_io.h"
-#include "ops_address.h"
#include "quota.h"
#include "rgrp.h"
#include "trans.h"
struct gfs2_inode *ip = GFS2_I(inode);
u64 *no_addr = opaque;
- if (ip->i_no_addr == *no_addr && test_bit(GIF_USER, &ip->i_flags))
+ if (ip->i_no_addr == *no_addr)
return 1;
return 0;
inode->i_ino = (unsigned long)*no_addr;
ip->i_no_addr = *no_addr;
- set_bit(GIF_USER, &ip->i_flags);
return 0;
}
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_skip_data *data = opaque;
- if (ip->i_no_addr == data->no_addr && test_bit(GIF_USER, &ip->i_flags)){
+ if (ip->i_no_addr == data->no_addr) {
if (inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE)){
data->skipped = 1;
return 0;
return 1;
inode->i_ino = (unsigned long)(data->no_addr);
ip->i_no_addr = data->no_addr;
- set_bit(GIF_USER, &ip->i_flags);
return 0;
}
* directory entry when gfs2_inode_lookup() is invoked. Part of the code
* segment inside gfs2_inode_lookup code needs to get moved around.
*
- * Clean up I_LOCK and I_NEW as well.
+ * Clears I_NEW as well.
**/
void gfs2_set_iop(struct inode *inode)
* @sb: The super block
* @no_addr: The inode number
* @type: The type of the inode
- * @skip_freeing: set this not return an inode if it is currently being freed.
*
* Returns: A VFS inode, or an error
*/
struct inode *gfs2_inode_lookup(struct super_block *sb,
unsigned int type,
u64 no_addr,
- u64 no_formal_ino, int skip_freeing)
+ u64 no_formal_ino)
{
struct inode *inode;
struct gfs2_inode *ip;
struct gfs2_glock *io_gl;
int error;
- if (skip_freeing)
- inode = gfs2_iget_skip(sb, no_addr);
- else
- inode = gfs2_iget(sb, no_addr);
+ inode = gfs2_iget(sb, no_addr);
ip = GFS2_I(inode);
if (!inode)
fail_iopen:
gfs2_glock_put(io_gl);
fail_put:
- ip->i_gl->gl_object = NULL;
+ if (inode->i_state & I_NEW)
+ ip->i_gl->gl_object = NULL;
gfs2_glock_put(ip->i_gl);
fail:
- iget_failed(inode);
+ if (inode->i_state & I_NEW)
+ iget_failed(inode);
+ else
+ iput(inode);
return ERR_PTR(error);
}
+/**
+ * gfs2_unlinked_inode_lookup - Lookup an unlinked inode for reclamation
+ * @sb: The super block
+ * no_addr: The inode number
+ * @@inode: A pointer to the inode found, if any
+ *
+ * Returns: 0 and *inode if no errors occurred. If an error occurs,
+ * the resulting *inode may or may not be NULL.
+ */
+
+int gfs2_unlinked_inode_lookup(struct super_block *sb, u64 no_addr,
+ struct inode **inode)
+{
+ struct gfs2_sbd *sdp;
+ struct gfs2_inode *ip;
+ struct gfs2_glock *io_gl;
+ int error;
+ struct gfs2_holder gh;
+
+ *inode = gfs2_iget_skip(sb, no_addr);
+
+ if (!(*inode))
+ return -ENOBUFS;
+
+ if (!((*inode)->i_state & I_NEW))
+ return -ENOBUFS;
+
+ ip = GFS2_I(*inode);
+ sdp = GFS2_SB(*inode);
+ ip->i_no_formal_ino = -1;
+
+ error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl);
+ if (unlikely(error))
+ goto fail;
+ ip->i_gl->gl_object = ip;
+
+ error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl);
+ if (unlikely(error))
+ goto fail_put;
+
+ set_bit(GIF_INVALID, &ip->i_flags);
+ error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, LM_FLAG_TRY | GL_EXACT,
+ &ip->i_iopen_gh);
+ if (unlikely(error)) {
+ if (error == GLR_TRYFAILED)
+ error = 0;
+ goto fail_iopen;
+ }
+ ip->i_iopen_gh.gh_gl->gl_object = ip;
+ gfs2_glock_put(io_gl);
+
+ (*inode)->i_mode = DT2IF(DT_UNKNOWN);
+
+ /*
+ * We must read the inode in order to work out its type in
+ * this case. Note that this doesn't happen often as we normally
+ * know the type beforehand. This code path only occurs during
+ * unlinked inode recovery (where it is safe to do this glock,
+ * which is not true in the general case).
+ */
+ error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, LM_FLAG_TRY,
+ &gh);
+ if (unlikely(error)) {
+ if (error == GLR_TRYFAILED)
+ error = 0;
+ goto fail_glock;
+ }
+ /* Inode is now uptodate */
+ gfs2_glock_dq_uninit(&gh);
+ gfs2_set_iop(*inode);
+
+ return 0;
+fail_glock:
+ gfs2_glock_dq(&ip->i_iopen_gh);
+fail_iopen:
+ gfs2_glock_put(io_gl);
+fail_put:
+ ip->i_gl->gl_object = NULL;
+ gfs2_glock_put(ip->i_gl);
+fail:
+ return error;
+}
+
static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
{
const struct gfs2_dinode *str = buf;
return inode ? inode : ERR_PTR(error);
}
-static void gfs2_inum_range_in(struct gfs2_inum_range_host *ir, const void *buf)
-{
- const struct gfs2_inum_range *str = buf;
-
- ir->ir_start = be64_to_cpu(str->ir_start);
- ir->ir_length = be64_to_cpu(str->ir_length);
-}
-
-static void gfs2_inum_range_out(const struct gfs2_inum_range_host *ir, void *buf)
-{
- struct gfs2_inum_range *str = buf;
-
- str->ir_start = cpu_to_be64(ir->ir_start);
- str->ir_length = cpu_to_be64(ir->ir_length);
-}
-
-static int pick_formal_ino_1(struct gfs2_sbd *sdp, u64 *formal_ino)
-{
- struct gfs2_inode *ip = GFS2_I(sdp->sd_ir_inode);
- struct buffer_head *bh;
- struct gfs2_inum_range_host ir;
- int error;
-
- error = gfs2_trans_begin(sdp, RES_DINODE, 0);
- if (error)
- return error;
- mutex_lock(&sdp->sd_inum_mutex);
-
- error = gfs2_meta_inode_buffer(ip, &bh);
- if (error) {
- mutex_unlock(&sdp->sd_inum_mutex);
- gfs2_trans_end(sdp);
- return error;
- }
-
- gfs2_inum_range_in(&ir, bh->b_data + sizeof(struct gfs2_dinode));
-
- if (ir.ir_length) {
- *formal_ino = ir.ir_start++;
- ir.ir_length--;
- gfs2_trans_add_bh(ip->i_gl, bh, 1);
- gfs2_inum_range_out(&ir,
- bh->b_data + sizeof(struct gfs2_dinode));
- brelse(bh);
- mutex_unlock(&sdp->sd_inum_mutex);
- gfs2_trans_end(sdp);
- return 0;
- }
-
- brelse(bh);
-
- mutex_unlock(&sdp->sd_inum_mutex);
- gfs2_trans_end(sdp);
-
- return 1;
-}
-
-static int pick_formal_ino_2(struct gfs2_sbd *sdp, u64 *formal_ino)
-{
- struct gfs2_inode *ip = GFS2_I(sdp->sd_ir_inode);
- struct gfs2_inode *m_ip = GFS2_I(sdp->sd_inum_inode);
- struct gfs2_holder gh;
- struct buffer_head *bh;
- struct gfs2_inum_range_host ir;
- int error;
-
- error = gfs2_glock_nq_init(m_ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
- if (error)
- return error;
-
- error = gfs2_trans_begin(sdp, 2 * RES_DINODE, 0);
- if (error)
- goto out;
- mutex_lock(&sdp->sd_inum_mutex);
-
- error = gfs2_meta_inode_buffer(ip, &bh);
- if (error)
- goto out_end_trans;
-
- gfs2_inum_range_in(&ir, bh->b_data + sizeof(struct gfs2_dinode));
-
- if (!ir.ir_length) {
- struct buffer_head *m_bh;
- u64 x, y;
- __be64 z;
-
- error = gfs2_meta_inode_buffer(m_ip, &m_bh);
- if (error)
- goto out_brelse;
-
- z = *(__be64 *)(m_bh->b_data + sizeof(struct gfs2_dinode));
- x = y = be64_to_cpu(z);
- ir.ir_start = x;
- ir.ir_length = GFS2_INUM_QUANTUM;
- x += GFS2_INUM_QUANTUM;
- if (x < y)
- gfs2_consist_inode(m_ip);
- z = cpu_to_be64(x);
- gfs2_trans_add_bh(m_ip->i_gl, m_bh, 1);
- *(__be64 *)(m_bh->b_data + sizeof(struct gfs2_dinode)) = z;
-
- brelse(m_bh);
- }
-
- *formal_ino = ir.ir_start++;
- ir.ir_length--;
-
- gfs2_trans_add_bh(ip->i_gl, bh, 1);
- gfs2_inum_range_out(&ir, bh->b_data + sizeof(struct gfs2_dinode));
-
-out_brelse:
- brelse(bh);
-out_end_trans:
- mutex_unlock(&sdp->sd_inum_mutex);
- gfs2_trans_end(sdp);
-out:
- gfs2_glock_dq_uninit(&gh);
- return error;
-}
-
-static int pick_formal_ino(struct gfs2_sbd *sdp, u64 *inum)
-{
- int error;
-
- error = pick_formal_ino_1(sdp, inum);
- if (error <= 0)
- return error;
-
- error = pick_formal_ino_2(sdp, inum);
-
- return error;
-}
-
/**
* create_ok - OK to create a new on-disk inode here?
* @dip: Directory in which dinode is to be created
if (error)
goto out_ipreserv;
- *no_addr = gfs2_alloc_di(dip, generation);
+ error = gfs2_alloc_di(dip, no_addr, generation);
gfs2_trans_end(sdp);
size_t len;
void *value;
char *name;
- struct gfs2_ea_request er;
err = security_inode_init_security(&ip->i_inode, &dip->i_inode,
&name, &value, &len);
return err;
}
- memset(&er, 0, sizeof(struct gfs2_ea_request));
-
- er.er_type = GFS2_EATYPE_SECURITY;
- er.er_name = name;
- er.er_data = value;
- er.er_name_len = strlen(name);
- er.er_data_len = len;
-
- err = gfs2_ea_set_i(ip, &er);
-
+ err = __gfs2_xattr_set(&ip->i_inode, name, value, len, 0,
+ GFS2_EATYPE_SECURITY);
kfree(value);
kfree(name);
if (error)
goto fail_gunlock;
- error = pick_formal_ino(sdp, &inum.no_formal_ino);
- if (error)
- goto fail_gunlock;
-
error = alloc_dinode(dip, &inum.no_addr, &generation);
if (error)
goto fail_gunlock;
+ inum.no_formal_ino = generation;
error = gfs2_glock_nq_num(sdp, inum.no_addr, &gfs2_inode_glops,
LM_ST_EXCLUSIVE, GL_SKIP, ghs + 1);
if (error)
goto fail_gunlock2;
- inode = gfs2_inode_lookup(dir->i_sb, IF2DT(mode),
- inum.no_addr,
- inum.no_formal_ino, 0);
+ inode = gfs2_inode_lookup(dir->i_sb, IF2DT(mode), inum.no_addr,
+ inum.no_formal_ino);
if (IS_ERR(inode))
goto fail_gunlock2;
if (error)
goto fail_gunlock2;
- error = gfs2_acl_create(dip, GFS2_I(inode));
+ error = gfs2_acl_create(dip, inode);
if (error)
goto fail_gunlock2;
return ERR_PTR(error);
}
-/**
- * gfs2_rmdiri - Remove a directory
- * @dip: The parent directory of the directory to be removed
- * @name: The name of the directory to be removed
- * @ip: The GFS2 inode of the directory to be removed
- *
- * Assumes Glocks on dip and ip are held
- *
- * Returns: errno
- */
-
-int gfs2_rmdiri(struct gfs2_inode *dip, const struct qstr *name,
- struct gfs2_inode *ip)
-{
- struct qstr dotname;
- int error;
-
- if (ip->i_entries != 2) {
- if (gfs2_consist_inode(ip))
- gfs2_dinode_print(ip);
- return -EIO;
- }
-
- error = gfs2_dir_del(dip, name);
- if (error)
- return error;
-
- error = gfs2_change_nlink(dip, -1);
- if (error)
- return error;
-
- gfs2_str2qstr(&dotname, ".");
- error = gfs2_dir_del(ip, &dotname);
- if (error)
- return error;
-
- gfs2_str2qstr(&dotname, "..");
- error = gfs2_dir_del(ip, &dotname);
- if (error)
- return error;
-
- /* It looks odd, but it really should be done twice */
- error = gfs2_change_nlink(ip, -1);
- if (error)
- return error;
-
- error = gfs2_change_nlink(ip, -1);
- if (error)
- return error;
-
- 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
- */
-
-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_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
- */
-
-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;
-}
-
-static int
-__gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr)
+static int __gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr)
{
struct buffer_head *dibh;
int error;
str->di_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
str->di_header.mh_type = cpu_to_be32(GFS2_METATYPE_DI);
- str->di_header.__pad0 = 0;
str->di_header.mh_format = cpu_to_be32(GFS2_FORMAT_DI);
- str->di_header.__pad1 = 0;
str->di_num.no_addr = cpu_to_be64(ip->i_no_addr);
str->di_num.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
str->di_mode = cpu_to_be32(ip->i_inode.i_mode);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff