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authorLinus Torvalds <torvalds@linux-foundation.org>2012-06-05 10:11:11 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-06-05 10:11:11 -0700
commitf9ba7179ce91fb77b2adf6eaab3676ab3a1f5a15 (patch)
tree2d02e7a4fd78083b78749d0c9c7466f0eb8e6f97 /fs/fuse/inode.c
parent0b3e9f3f21c42d064f5f4088df4088e3d55755eb (diff)
parent203627bbc90377c509e32450c67c5d957ba2d989 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse updates from Miklos Szeredi. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: fuse: fix blksize calculation fuse: fix stat call on 32 bit platforms fuse: optimize fallocate on permanent failure fuse: add FALLOCATE operation fuse: Convert to kstrtoul_from_user
Diffstat (limited to 'fs/fuse/inode.c')
-rw-r--r--fs/fuse/inode.c17
1 files changed, 16 insertions, 1 deletions
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 42678a33b7b..1cd61652018 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -91,6 +91,7 @@ static struct inode *fuse_alloc_inode(struct super_block *sb)
fi->nlookup = 0;
fi->attr_version = 0;
fi->writectr = 0;
+ fi->orig_ino = 0;
INIT_LIST_HEAD(&fi->write_files);
INIT_LIST_HEAD(&fi->queued_writes);
INIT_LIST_HEAD(&fi->writepages);
@@ -139,6 +140,18 @@ static int fuse_remount_fs(struct super_block *sb, int *flags, char *data)
return 0;
}
+/*
+ * ino_t is 32-bits on 32-bit arch. We have to squash the 64-bit value down
+ * so that it will fit.
+ */
+static ino_t fuse_squash_ino(u64 ino64)
+{
+ ino_t ino = (ino_t) ino64;
+ if (sizeof(ino_t) < sizeof(u64))
+ ino ^= ino64 >> (sizeof(u64) - sizeof(ino_t)) * 8;
+ return ino;
+}
+
void fuse_change_attributes_common(struct inode *inode, struct fuse_attr *attr,
u64 attr_valid)
{
@@ -148,7 +161,7 @@ void fuse_change_attributes_common(struct inode *inode, struct fuse_attr *attr,
fi->attr_version = ++fc->attr_version;
fi->i_time = attr_valid;
- inode->i_ino = attr->ino;
+ inode->i_ino = fuse_squash_ino(attr->ino);
inode->i_mode = (inode->i_mode & S_IFMT) | (attr->mode & 07777);
set_nlink(inode, attr->nlink);
inode->i_uid = attr->uid;
@@ -174,6 +187,8 @@ void fuse_change_attributes_common(struct inode *inode, struct fuse_attr *attr,
fi->orig_i_mode = inode->i_mode;
if (!(fc->flags & FUSE_DEFAULT_PERMISSIONS))
inode->i_mode &= ~S_ISVTX;
+
+ fi->orig_ino = attr->ino;
}
void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr,