*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: fs.c,v 1.51 2004/11/28 12:19:37 dedekind Exp $
+ * $Id: fs.c,v 1.66 2005/09/27 13:17:29 dedekind Exp $
*
*/
-#include <linux/version.h>
-#include <linux/config.h>
+#include <linux/capability.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/fs.h>
struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
struct jffs2_raw_inode *ri;
- unsigned short dev;
+ union jffs2_device_node dev;
unsigned char *mdata = NULL;
int mdatalen = 0;
unsigned int ivalid;
- uint32_t phys_ofs, alloclen;
+ uint32_t alloclen;
int ret;
D1(printk(KERN_DEBUG "jffs2_setattr(): ino #%lu\n", inode->i_ino));
ret = inode_change_ok(inode, iattr);
- if (ret)
+ if (ret)
return ret;
/* Special cases - we don't want more than one data node
it out again with the appropriate data attached */
if (S_ISBLK(inode->i_mode) || S_ISCHR(inode->i_mode)) {
/* For these, we don't actually need to read the old node */
- dev = old_encode_dev(inode->i_rdev);
+ mdatalen = jffs2_encode_dev(&dev, inode->i_rdev);
mdata = (char *)&dev;
- mdatalen = sizeof(dev);
D1(printk(KERN_DEBUG "jffs2_setattr(): Writing %d bytes of kdev_t\n", mdatalen));
} else if (S_ISLNK(inode->i_mode)) {
+ down(&f->sem);
mdatalen = f->metadata->size;
mdata = kmalloc(f->metadata->size, GFP_USER);
- if (!mdata)
+ if (!mdata) {
+ up(&f->sem);
return -ENOMEM;
+ }
ret = jffs2_read_dnode(c, f, f->metadata, mdata, 0, mdatalen);
if (ret) {
+ up(&f->sem);
kfree(mdata);
return ret;
}
+ up(&f->sem);
D1(printk(KERN_DEBUG "jffs2_setattr(): Writing %d bytes of symlink target\n", mdatalen));
}
kfree(mdata);
return -ENOMEM;
}
-
- ret = jffs2_reserve_space(c, sizeof(*ri) + mdatalen, &phys_ofs, &alloclen, ALLOC_NORMAL);
+
+ ret = jffs2_reserve_space(c, sizeof(*ri) + mdatalen, &alloclen,
+ ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
if (ret) {
jffs2_free_raw_inode(ri);
if (S_ISLNK(inode->i_mode & S_IFMT))
}
down(&f->sem);
ivalid = iattr->ia_valid;
-
+
ri->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
ri->nodetype = cpu_to_je16(JFFS2_NODETYPE_INODE);
ri->totlen = cpu_to_je32(sizeof(*ri) + mdatalen);
if (iattr->ia_mode & S_ISGID &&
!in_group_p(je16_to_cpu(ri->gid)) && !capable(CAP_FSETID))
ri->mode = cpu_to_jemode(iattr->ia_mode & ~S_ISGID);
- else
+ else
ri->mode = cpu_to_jemode(iattr->ia_mode);
else
ri->mode = cpu_to_jemode(inode->i_mode);
else
ri->data_crc = cpu_to_je32(0);
- new_metadata = jffs2_write_dnode(c, f, ri, mdata, mdatalen, phys_ofs, ALLOC_NORMAL);
+ new_metadata = jffs2_write_dnode(c, f, ri, mdata, mdatalen, ALLOC_NORMAL);
if (S_ISLNK(inode->i_mode))
kfree(mdata);
-
+
if (IS_ERR(new_metadata)) {
jffs2_complete_reservation(c);
jffs2_free_raw_inode(ri);
old_metadata = f->metadata;
if (ivalid & ATTR_SIZE && inode->i_size > iattr->ia_size)
- jffs2_truncate_fraglist (c, &f->fragtree, iattr->ia_size);
+ jffs2_truncate_fragtree (c, &f->fragtree, iattr->ia_size);
if (ivalid & ATTR_SIZE && inode->i_size < iattr->ia_size) {
jffs2_add_full_dnode_to_inode(c, f, new_metadata);
jffs2_complete_reservation(c);
/* We have to do the vmtruncate() without f->sem held, since
- some pages may be locked and waiting for it in readpage().
+ some pages may be locked and waiting for it in readpage().
We are protected from a simultaneous write() extending i_size
back past iattr->ia_size, because do_truncate() holds the
generic inode semaphore. */
int jffs2_setattr(struct dentry *dentry, struct iattr *iattr)
{
- return jffs2_do_setattr(dentry->d_inode, iattr);
+ int rc;
+
+ rc = jffs2_do_setattr(dentry->d_inode, iattr);
+ if (!rc && (iattr->ia_valid & ATTR_MODE))
+ rc = jffs2_acl_chmod(dentry->d_inode);
+ return rc;
}
-int jffs2_statfs(struct super_block *sb, struct kstatfs *buf)
+int jffs2_statfs(struct dentry *dentry, struct kstatfs *buf)
{
- struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
+ struct jffs2_sb_info *c = JFFS2_SB_INFO(dentry->d_sb);
unsigned long avail;
buf->f_type = JFFS2_SUPER_MAGIC;
buf->f_namelen = JFFS2_MAX_NAME_LEN;
spin_lock(&c->erase_completion_lock);
-
avail = c->dirty_size + c->free_size;
if (avail > c->sector_size * c->resv_blocks_write)
avail -= c->sector_size * c->resv_blocks_write;
else
avail = 0;
+ spin_unlock(&c->erase_completion_lock);
buf->f_bavail = buf->f_bfree = avail >> PAGE_SHIFT;
- D2(jffs2_dump_block_lists(c));
-
- spin_unlock(&c->erase_completion_lock);
-
return 0;
}
void jffs2_clear_inode (struct inode *inode)
{
- /* We can forget about this inode for now - drop all
+ /* We can forget about this inode for now - drop all
* the nodelists associated with it, etc.
*/
struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
-
- D1(printk(KERN_DEBUG "jffs2_clear_inode(): ino #%lu mode %o\n", inode->i_ino, inode->i_mode));
+ D1(printk(KERN_DEBUG "jffs2_clear_inode(): ino #%lu mode %o\n", inode->i_ino, inode->i_mode));
jffs2_do_clear_inode(c, f);
}
struct jffs2_inode_info *f;
struct jffs2_sb_info *c;
struct jffs2_raw_inode latest_node;
+ union jffs2_device_node jdev;
+ dev_t rdev = 0;
int ret;
D1(printk(KERN_DEBUG "jffs2_read_inode(): inode->i_ino == %lu\n", inode->i_ino));
c = JFFS2_SB_INFO(inode->i_sb);
jffs2_init_inode_info(f);
-
+ down(&f->sem);
+
ret = jffs2_do_read_inode(c, f, inode->i_ino, &latest_node);
if (ret) {
inode->i_nlink = f->inocache->nlink;
- inode->i_blksize = PAGE_SIZE;
inode->i_blocks = (inode->i_size + 511) >> 9;
-
+
switch (inode->i_mode & S_IFMT) {
- jint16_t rdev;
case S_IFLNK:
inode->i_op = &jffs2_symlink_inode_operations;
break;
-
+
case S_IFDIR:
{
struct jffs2_full_dirent *fd;
for (fd=f->dents; fd; fd = fd->next) {
if (fd->type == DT_DIR && fd->ino)
- inode->i_nlink++;
+ inc_nlink(inode);
}
/* and '..' */
- inode->i_nlink++;
+ inc_nlink(inode);
/* Root dir gets i_nlink 3 for some reason */
if (inode->i_ino == 1)
- inode->i_nlink++;
+ inc_nlink(inode);
inode->i_op = &jffs2_dir_inode_operations;
inode->i_fop = &jffs2_dir_operations;
case S_IFBLK:
case S_IFCHR:
/* Read the device numbers from the media */
+ if (f->metadata->size != sizeof(jdev.old) &&
+ f->metadata->size != sizeof(jdev.new)) {
+ printk(KERN_NOTICE "Device node has strange size %d\n", f->metadata->size);
+ up(&f->sem);
+ jffs2_do_clear_inode(c, f);
+ make_bad_inode(inode);
+ return;
+ }
D1(printk(KERN_DEBUG "Reading device numbers from flash\n"));
- if (jffs2_read_dnode(c, f, f->metadata, (char *)&rdev, 0, sizeof(rdev)) < 0) {
+ if (jffs2_read_dnode(c, f, f->metadata, (char *)&jdev, 0, f->metadata->size) < 0) {
/* Eep */
printk(KERN_NOTICE "Read device numbers for inode %lu failed\n", (unsigned long)inode->i_ino);
up(&f->sem);
jffs2_do_clear_inode(c, f);
make_bad_inode(inode);
return;
- }
+ }
+ if (f->metadata->size == sizeof(jdev.old))
+ rdev = old_decode_dev(je16_to_cpu(jdev.old));
+ else
+ rdev = new_decode_dev(je32_to_cpu(jdev.new));
case S_IFSOCK:
case S_IFIFO:
inode->i_op = &jffs2_file_inode_operations;
- init_special_inode(inode, inode->i_mode,
- old_decode_dev((je16_to_cpu(rdev))));
+ init_special_inode(inode, inode->i_mode, rdev);
break;
default:
down(&c->alloc_sem);
jffs2_flush_wbuf_pad(c);
up(&c->alloc_sem);
- }
+ }
if (!(*flags & MS_RDONLY))
jffs2_start_garbage_collect_thread(c);
-
+
*flags |= MS_NOATIME;
return 0;
D1(printk(KERN_DEBUG "jffs2_new_inode(): dir_i %ld, mode 0x%x\n", dir_i->i_ino, mode));
c = JFFS2_SB_INFO(sb);
-
+
inode = new_inode(sb);
-
+
if (!inode)
return ERR_PTR(-ENOMEM);
f = JFFS2_INODE_INFO(inode);
jffs2_init_inode_info(f);
+ down(&f->sem);
memset(ri, 0, sizeof(*ri));
/* Set OS-specific defaults for new inodes */
inode->i_atime = inode->i_ctime = inode->i_mtime = CURRENT_TIME_SEC;
ri->atime = ri->mtime = ri->ctime = cpu_to_je32(I_SEC(inode->i_mtime));
- inode->i_blksize = PAGE_SIZE;
inode->i_blocks = 0;
inode->i_size = 0;
c = JFFS2_SB_INFO(sb);
-#ifndef CONFIG_JFFS2_FS_NAND
+#ifndef CONFIG_JFFS2_FS_WRITEBUFFER
if (c->mtd->type == MTD_NANDFLASH) {
printk(KERN_ERR "jffs2: Cannot operate on NAND flash unless jffs2 NAND support is compiled in.\n");
return -EINVAL;
}
+ if (c->mtd->type == MTD_DATAFLASH) {
+ printk(KERN_ERR "jffs2: Cannot operate on DataFlash unless jffs2 DataFlash support is compiled in.\n");
+ return -EINVAL;
+ }
#endif
c->flash_size = c->mtd->size;
-
- /*
- * Check, if we have to concatenate physical blocks to larger virtual blocks
- * to reduce the memorysize for c->blocks. (kmalloc allows max. 128K allocation)
- */
- c->sector_size = c->mtd->erasesize;
+ c->sector_size = c->mtd->erasesize;
blocks = c->flash_size / c->sector_size;
- if (!(c->mtd->flags & MTD_NO_VIRTBLOCKS)) {
- while ((blocks * sizeof (struct jffs2_eraseblock)) > (128 * 1024)) {
- blocks >>= 1;
- c->sector_size <<= 1;
- }
- }
/*
* Size alignment check
*/
if ((c->sector_size * blocks) != c->flash_size) {
- c->flash_size = c->sector_size * blocks;
+ c->flash_size = c->sector_size * blocks;
printk(KERN_INFO "jffs2: Flash size not aligned to erasesize, reducing to %dKiB\n",
c->flash_size / 1024);
}
- if (c->sector_size != c->mtd->erasesize)
- printk(KERN_INFO "jffs2: Erase block size too small (%dKiB). Using virtual blocks size (%dKiB) instead\n",
- c->mtd->erasesize / 1024, c->sector_size / 1024);
-
if (c->flash_size < 5*c->sector_size) {
printk(KERN_ERR "jffs2: Too few erase blocks (%d)\n", c->flash_size / c->sector_size);
return -EINVAL;
}
c->cleanmarker_size = sizeof(struct jffs2_unknown_node);
- /* Joern -- stick alignment for weird 8-byte-page flash here */
/* NAND (or other bizarre) flash... do setup accordingly */
ret = jffs2_flash_setup(c);
if (ret)
return ret;
- c->inocache_list = kmalloc(INOCACHE_HASHSIZE * sizeof(struct jffs2_inode_cache *), GFP_KERNEL);
+ c->inocache_list = kcalloc(INOCACHE_HASHSIZE, sizeof(struct jffs2_inode_cache *), GFP_KERNEL);
if (!c->inocache_list) {
ret = -ENOMEM;
goto out_wbuf;
}
- memset(c->inocache_list, 0, INOCACHE_HASHSIZE * sizeof(struct jffs2_inode_cache *));
+
+ jffs2_init_xattr_subsystem(c);
if ((ret = jffs2_do_mount_fs(c)))
goto out_inohash;
root_i = iget(sb, 1);
if (is_bad_inode(root_i)) {
D1(printk(KERN_WARNING "get root inode failed\n"));
- goto out_nodes;
+ goto out_root_i;
}
D1(printk(KERN_DEBUG "jffs2_do_fill_super(): d_alloc_root()\n"));
if (!sb->s_root)
goto out_root_i;
-#if LINUX_VERSION_CODE >= 0x20403
sb->s_maxbytes = 0xFFFFFFFF;
-#endif
sb->s_blocksize = PAGE_CACHE_SIZE;
sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
sb->s_magic = JFFS2_SUPER_MAGIC;
out_root_i:
iput(root_i);
- out_nodes:
jffs2_free_ino_caches(c);
jffs2_free_raw_node_refs(c);
- if (c->mtd->flags & MTD_NO_VIRTBLOCKS)
+ if (jffs2_blocks_use_vmalloc(c))
vfree(c->blocks);
else
kfree(c->blocks);
out_inohash:
+ jffs2_clear_xattr_subsystem(c);
kfree(c->inocache_list);
out_wbuf:
jffs2_flash_cleanup(c);
struct jffs2_inode_cache *ic;
if (!nlink) {
/* The inode has zero nlink but its nodes weren't yet marked
- obsolete. This has to be because we're still waiting for
+ obsolete. This has to be because we're still waiting for
the final (close() and) iput() to happen.
- There's a possibility that the final iput() could have
+ There's a possibility that the final iput() could have
happened while we were contemplating. In order to ensure
that we don't cause a new read_inode() (which would fail)
for the inode in question, we use ilookup() in this case
instead of iget().
- The nlink can't _become_ zero at this point because we're
+ The nlink can't _become_ zero at this point because we're
holding the alloc_sem, and jffs2_do_unlink() would also
need that while decrementing nlink on any inode.
*/
return JFFS2_INODE_INFO(inode);
}
-unsigned char *jffs2_gc_fetch_page(struct jffs2_sb_info *c,
- struct jffs2_inode_info *f,
+unsigned char *jffs2_gc_fetch_page(struct jffs2_sb_info *c,
+ struct jffs2_inode_info *f,
unsigned long offset,
unsigned long *priv)
{
struct inode *inode = OFNI_EDONI_2SFFJ(f);
struct page *pg;
- pg = read_cache_page(inode->i_mapping, offset >> PAGE_CACHE_SHIFT,
+ pg = read_cache_page(inode->i_mapping, offset >> PAGE_CACHE_SHIFT,
(void *)jffs2_do_readpage_unlock, inode);
if (IS_ERR(pg))
return (void *)pg;
-
+
*priv = (unsigned long)pg;
return kmap(pg);
}
static int jffs2_flash_setup(struct jffs2_sb_info *c) {
int ret = 0;
-
+
if (jffs2_cleanmarker_oob(c)) {
/* NAND flash... do setup accordingly */
ret = jffs2_nand_flash_setup(c);
return ret;
}
- /* add setups for other bizarre flashes here... */
- if (jffs2_nor_ecc(c)) {
- ret = jffs2_nor_ecc_flash_setup(c);
+ /* and Dataflash */
+ if (jffs2_dataflash(c)) {
+ ret = jffs2_dataflash_setup(c);
+ if (ret)
+ return ret;
+ }
+
+ /* and Intel "Sibley" flash */
+ if (jffs2_nor_wbuf_flash(c)) {
+ ret = jffs2_nor_wbuf_flash_setup(c);
if (ret)
return ret;
}
+
return ret;
}
jffs2_nand_flash_cleanup(c);
}
- /* add cleanups for other bizarre flashes here... */
- if (jffs2_nor_ecc(c)) {
- jffs2_nor_ecc_flash_cleanup(c);
+ /* and DataFlash */
+ if (jffs2_dataflash(c)) {
+ jffs2_dataflash_cleanup(c);
+ }
+
+ /* and Intel "Sibley" flash */
+ if (jffs2_nor_wbuf_flash(c)) {
+ jffs2_nor_wbuf_flash_cleanup(c);
}
}