#include <linux/vmalloc.h>
#include <linux/vfs.h>
#include <linux/crc32.h>
+#include <linux/smp_lock.h>
#include "nodelist.h"
static int jffs2_flash_setup(struct jffs2_sb_info *c);
-static int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
+int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
{
struct jffs2_full_dnode *old_metadata, *new_metadata;
struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
unsigned int ivalid;
uint32_t alloclen;
int ret;
+ int alloc_type = ALLOC_NORMAL;
+
D1(printk(KERN_DEBUG "jffs2_setattr(): ino #%lu\n", inode->i_ino));
- ret = inode_change_ok(inode, iattr);
- if (ret)
- return ret;
/* Special cases - we don't want more than one data node
for these types on the medium at any time. So setattr
mdata = (char *)&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);
+ mutex_lock(&f->sem);
mdatalen = f->metadata->size;
mdata = kmalloc(f->metadata->size, GFP_USER);
if (!mdata) {
- up(&f->sem);
+ mutex_unlock(&f->sem);
return -ENOMEM;
}
ret = jffs2_read_dnode(c, f, f->metadata, mdata, 0, mdatalen);
if (ret) {
- up(&f->sem);
+ mutex_unlock(&f->sem);
kfree(mdata);
return ret;
}
- up(&f->sem);
+ mutex_unlock(&f->sem);
D1(printk(KERN_DEBUG "jffs2_setattr(): Writing %d bytes of symlink target\n", mdatalen));
}
kfree(mdata);
return ret;
}
- down(&f->sem);
+ mutex_lock(&f->sem);
ivalid = iattr->ia_valid;
ri->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
ri->gid = cpu_to_je16((ivalid & ATTR_GID)?iattr->ia_gid:inode->i_gid);
if (ivalid & ATTR_MODE)
- 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
- ri->mode = cpu_to_jemode(iattr->ia_mode);
+ ri->mode = cpu_to_jemode(iattr->ia_mode);
else
ri->mode = cpu_to_jemode(inode->i_mode);
ri->compr = JFFS2_COMPR_ZERO;
ri->dsize = cpu_to_je32(iattr->ia_size - inode->i_size);
ri->offset = cpu_to_je32(inode->i_size);
+ } else if (ivalid & ATTR_SIZE && !iattr->ia_size) {
+ /* For truncate-to-zero, treat it as deletion because
+ it'll always be obsoleting all previous nodes */
+ alloc_type = ALLOC_DELETION;
}
ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
if (mdatalen)
else
ri->data_crc = cpu_to_je32(0);
- new_metadata = jffs2_write_dnode(c, f, ri, mdata, mdatalen, ALLOC_NORMAL);
+ new_metadata = jffs2_write_dnode(c, f, ri, mdata, mdatalen, alloc_type);
if (S_ISLNK(inode->i_mode))
kfree(mdata);
if (IS_ERR(new_metadata)) {
jffs2_complete_reservation(c);
jffs2_free_raw_inode(ri);
- up(&f->sem);
+ mutex_unlock(&f->sem);
return PTR_ERR(new_metadata);
}
/* It worked. Update the inode */
if (ivalid & ATTR_SIZE && inode->i_size < iattr->ia_size) {
jffs2_add_full_dnode_to_inode(c, f, new_metadata);
inode->i_size = iattr->ia_size;
+ inode->i_blocks = (inode->i_size + 511) >> 9;
f->metadata = NULL;
} else {
f->metadata = new_metadata;
}
jffs2_free_raw_inode(ri);
- up(&f->sem);
+ mutex_unlock(&f->sem);
jffs2_complete_reservation(c);
/* We have to do the vmtruncate() without f->sem held, since
We are protected from a simultaneous write() extending i_size
back past iattr->ia_size, because do_truncate() holds the
generic inode semaphore. */
- if (ivalid & ATTR_SIZE && inode->i_size > iattr->ia_size)
- vmtruncate(inode, iattr->ia_size);
+ if (ivalid & ATTR_SIZE && inode->i_size > iattr->ia_size) {
+ vmtruncate(inode, iattr->ia_size);
+ inode->i_blocks = (inode->i_size + 511) >> 9;
+ }
return 0;
}
{
int rc;
+ rc = inode_change_ok(dentry->d_inode, iattr);
+ if (rc)
+ return 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;
}
buf->f_files = 0;
buf->f_ffree = 0;
buf->f_namelen = JFFS2_MAX_NAME_LEN;
+ buf->f_fsid.val[0] = JFFS2_SUPER_MAGIC;
+ buf->f_fsid.val[1] = c->mtd->index;
spin_lock(&c->erase_completion_lock);
avail = c->dirty_size + c->free_size;
jffs2_do_clear_inode(c, f);
}
-void jffs2_read_inode (struct inode *inode)
+struct inode *jffs2_iget(struct super_block *sb, unsigned long ino)
{
struct jffs2_inode_info *f;
struct jffs2_sb_info *c;
struct jffs2_raw_inode latest_node;
union jffs2_device_node jdev;
+ struct inode *inode;
dev_t rdev = 0;
int ret;
- D1(printk(KERN_DEBUG "jffs2_read_inode(): inode->i_ino == %lu\n", inode->i_ino));
+ D1(printk(KERN_DEBUG "jffs2_iget(): ino == %lu\n", ino));
+
+ inode = iget_locked(sb, ino);
+ if (!inode)
+ return ERR_PTR(-ENOMEM);
+ if (!(inode->i_state & I_NEW))
+ return inode;
f = JFFS2_INODE_INFO(inode);
c = JFFS2_SB_INFO(inode->i_sb);
jffs2_init_inode_info(f);
- down(&f->sem);
+ mutex_lock(&f->sem);
ret = jffs2_do_read_inode(c, f, inode->i_ino, &latest_node);
if (ret) {
- make_bad_inode(inode);
- up(&f->sem);
- return;
+ mutex_unlock(&f->sem);
+ iget_failed(inode);
+ return ERR_PTR(ret);
}
inode->i_mode = jemode_to_cpu(latest_node.mode);
inode->i_uid = je16_to_cpu(latest_node.uid);
inode->i_mtime = ITIME(je32_to_cpu(latest_node.mtime));
inode->i_ctime = ITIME(je32_to_cpu(latest_node.ctime));
- inode->i_nlink = f->inocache->nlink;
+ inode->i_nlink = f->inocache->pino_nlink;
inode->i_blocks = (inode->i_size + 511) >> 9;
case S_IFDIR:
{
struct jffs2_full_dirent *fd;
+ inode->i_nlink = 2; /* parent and '.' */
for (fd=f->dents; fd; fd = fd->next) {
if (fd->type == DT_DIR && fd->ino)
inc_nlink(inode);
}
- /* and '..' */
- inc_nlink(inode);
/* Root dir gets i_nlink 3 for some reason */
if (inode->i_ino == 1)
inc_nlink(inode);
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;
+ goto error_io;
}
D1(printk(KERN_DEBUG "Reading device numbers from flash\n"));
- if (jffs2_read_dnode(c, f, f->metadata, (char *)&jdev, 0, f->metadata->size) < 0) {
+ ret = jffs2_read_dnode(c, f, f->metadata, (char *)&jdev, 0, f->metadata->size);
+ if (ret < 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;
+ goto error;
}
if (f->metadata->size == sizeof(jdev.old))
rdev = old_decode_dev(je16_to_cpu(jdev.old));
printk(KERN_WARNING "jffs2_read_inode(): Bogus imode %o for ino %lu\n", inode->i_mode, (unsigned long)inode->i_ino);
}
- up(&f->sem);
+ mutex_unlock(&f->sem);
D1(printk(KERN_DEBUG "jffs2_read_inode() returning\n"));
+ unlock_new_inode(inode);
+ return inode;
+
+error_io:
+ ret = -EIO;
+error:
+ mutex_unlock(&f->sem);
+ jffs2_do_clear_inode(c, f);
+ iget_failed(inode);
+ return ERR_PTR(ret);
}
void jffs2_dirty_inode(struct inode *inode)
This also catches the case where it was stopped and this
is just a remount to restart it.
Flush the writebuffer, if neccecary, else we loose it */
+ lock_kernel();
if (!(sb->s_flags & MS_RDONLY)) {
jffs2_stop_garbage_collect_thread(c);
- down(&c->alloc_sem);
+ mutex_lock(&c->alloc_sem);
jffs2_flush_wbuf_pad(c);
- up(&c->alloc_sem);
+ mutex_unlock(&c->alloc_sem);
}
if (!(*flags & MS_RDONLY))
*flags |= MS_NOATIME;
+ unlock_kernel();
return 0;
}
-void jffs2_write_super (struct super_block *sb)
-{
- struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
- sb->s_dirt = 0;
-
- if (sb->s_flags & MS_RDONLY)
- return;
-
- D1(printk(KERN_DEBUG "jffs2_write_super()\n"));
- jffs2_garbage_collect_trigger(c);
- jffs2_erase_pending_blocks(c, 0);
- jffs2_flush_wbuf_gc(c, 0);
-}
-
-
/* jffs2_new_inode: allocate a new inode and inocache, add it to the hash,
fill in the raw_inode while you're at it. */
struct inode *jffs2_new_inode (struct inode *dir_i, int mode, struct jffs2_raw_inode *ri)
f = JFFS2_INODE_INFO(inode);
jffs2_init_inode_info(f);
- down(&f->sem);
+ mutex_lock(&f->sem);
memset(ri, 0, sizeof(*ri));
/* Set OS-specific defaults for new inodes */
- ri->uid = cpu_to_je16(current->fsuid);
+ ri->uid = cpu_to_je16(current_fsuid());
if (dir_i->i_mode & S_ISGID) {
ri->gid = cpu_to_je16(dir_i->i_gid);
if (S_ISDIR(mode))
mode |= S_ISGID;
} else {
- ri->gid = cpu_to_je16(current->fsgid);
+ ri->gid = cpu_to_je16(current_fsgid());
+ }
+
+ /* POSIX ACLs have to be processed now, at least partly.
+ The umask is only applied if there's no default ACL */
+ ret = jffs2_init_acl_pre(dir_i, inode, &mode);
+ if (ret) {
+ make_bad_inode(inode);
+ iput(inode);
+ return ERR_PTR(ret);
}
- ri->mode = cpu_to_jemode(mode);
ret = jffs2_do_new_inode (c, f, mode, ri);
if (ret) {
make_bad_inode(inode);
if ((ret = jffs2_do_mount_fs(c)))
goto out_inohash;
- ret = -EINVAL;
-
D1(printk(KERN_DEBUG "jffs2_do_fill_super(): Getting root inode\n"));
- root_i = iget(sb, 1);
- if (is_bad_inode(root_i)) {
+ root_i = jffs2_iget(sb, 1);
+ if (IS_ERR(root_i)) {
D1(printk(KERN_WARNING "get root inode failed\n"));
- goto out_root_i;
+ ret = PTR_ERR(root_i);
+ goto out_root;
}
+ ret = -ENOMEM;
+
D1(printk(KERN_DEBUG "jffs2_do_fill_super(): d_alloc_root()\n"));
sb->s_root = d_alloc_root(root_i);
if (!sb->s_root)
out_root_i:
iput(root_i);
+out_root:
jffs2_free_ino_caches(c);
jffs2_free_raw_node_refs(c);
if (jffs2_blocks_use_vmalloc(c))
}
struct jffs2_inode_info *jffs2_gc_fetch_inode(struct jffs2_sb_info *c,
- int inum, int nlink)
+ int inum, int unlinked)
{
struct inode *inode;
struct jffs2_inode_cache *ic;
- if (!nlink) {
+
+ if (unlinked) {
/* The inode has zero nlink but its nodes weren't yet marked
obsolete. This has to be because we're still waiting for
the final (close() and) iput() to happen.
jffs2_do_unlink() would need the alloc_sem and we have it.
Just iget() it, and if read_inode() is necessary that's OK.
*/
- inode = iget(OFNI_BS_2SFFJ(c), inum);
- if (!inode)
- return ERR_PTR(-ENOMEM);
+ inode = jffs2_iget(OFNI_BS_2SFFJ(c), inum);
+ if (IS_ERR(inode))
+ return ERR_CAST(inode);
}
if (is_bad_inode(inode)) {
- printk(KERN_NOTICE "Eep. read_inode() failed for ino #%u. nlink %d\n",
- inum, nlink);
+ printk(KERN_NOTICE "Eep. read_inode() failed for ino #%u. unlinked %d\n",
+ inum, unlinked);
/* NB. This will happen again. We need to do something appropriate here. */
iput(inode);
return ERR_PTR(-EIO);
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_async(inode->i_mapping, offset >> PAGE_CACHE_SHIFT,
(void *)jffs2_do_readpage_unlock, inode);
if (IS_ERR(pg))
return (void *)pg;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff