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fuse: fix truncate after open

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Commit e1181ee6 "vfs: pass struct file to do_truncate on O_TRUNC
opens" broke the behavior of open(O_TRUNC|O_RDONLY) in fuse.  Fuse
assumed that when called from open, a truncate() will be done, not an
ftruncate().

Fix by restoring the old behavior, based on the ATTR_OPEN flag.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
This commit is contained in:
Miklos Szeredi 2011-02-25 14:44:58 +01:00
parent 5a18ec176c
commit 8d56addd70
1 changed files with 5 additions and 2 deletions
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7
fs/fuse/dir.c
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@ -1283,8 +1283,11 @@ static int fuse_do_setattr(struct dentry *entry, struct iattr *attr,
if (err)
return err;
if ((attr->ia_valid & ATTR_OPEN) && fc->atomic_o_trunc)
return 0;
if (attr->ia_valid & ATTR_OPEN) {
if (fc->atomic_o_trunc)
return 0;
file = NULL;
}
if (attr->ia_valid & ATTR_SIZE)
is_truncate = true;