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| author | Sergei Antonov <saproj@gmail.com> | 2015-04-16 12:47:15 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-17 09:04:05 -0400 |
| commit | 059a704c43ea8800a689cf90fadb48f1e985c7eb (patch) | |
| tree | ccaee84698733bd7a8cdb71ab65bd5e3d76f73de /fs/hfsplus/inode.c | |
| parent | 27a4e3884e9c6497f96cc28256c3cdaa93d4cf97 (diff) | |
| download | linux-059a704c43ea8800a689cf90fadb48f1e985c7eb.tar.bz2 | |
hfsplus: fix expand when not enough available space
Fix a bug which is reproduced as follows. Create a file:
echo abc > test_file
Try to expand the file beyond available space:
truncate --size=<size exceeding available space> test_file
Since HFS+ does not support file size > allocated size, truncate should
fail. However, it ends successfully. The driver returns success despite
having been unable to allocate the requested space for the file. Also
filesystem check finds an error:
Checking catalog file.
Incorrect size for file test_file
(It should be 469094400 instead of 1000000000)
Add a piece of code analogous to code in the fat driver. Now a proper
error is returned and filesystem remains consistent.
Signed-off-by: Sergei Antonov <saproj@gmail.com>
Cc: Vyacheslav Dubeyko <slava@dubeyko.com>
Cc: Hin-Tak Leung <htl10@users.sourceforge.net>
Reviewed-by: Anton Altaparmakov <anton@tuxera.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Sougata Santra <sougata@tuxera.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/hfsplus/inode.c')
| -rw-r--r-- | fs/hfsplus/inode.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c index 5f86cadb0542..6229214ef7c1 100644 --- a/fs/hfsplus/inode.c +++ b/fs/hfsplus/inode.c @@ -254,6 +254,12 @@ static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr) if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size != i_size_read(inode)) { inode_dio_wait(inode); + if (attr->ia_size > inode->i_size) { + error = generic_cont_expand_simple(inode, + attr->ia_size); + if (error) + return error; + } truncate_setsize(inode, attr->ia_size); hfsplus_file_truncate(inode); } |