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linux/fs/f2fs/hash.c

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f2fs: adjust kernel coding style As pointed out by Randy Dunlap, this patch removes all usage of "/**" for comment blocks. Instead, just use "/*". Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-29 13:28:09 +09:00
f2fs: add core directory operations this adds core functions to find, add, delete, and link dentries. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-14 16:59:04 +09:00
f2fs: fix wrong casting for dentry name The dentry name type is unsigned char *. If we don't match this type, some character codes can be changed by signed bit. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2014-08-29 00:26:50 -07:00
f2fs: add core directory operations this adds core functions to find, add, delete, and link dentries. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-14 16:59:04 +09:00
f2fs: check entire encrypted bigname when finding a dentry If user has no key under an encrypted dir, fscrypt gives digested dentries. Previously, when looking up a dentry, f2fs only checks its hash value with first 4 bytes of the digested dentry, which didn't handle hash collisions fully. This patch enhances to check entire dentry bytes likewise ext4. Eric reported how to reproduce this issue by: # seq -f "edir/abcdefghijklmnopqrstuvwxyz012345%.0f" 100000 | xargs touch # find edir -type f | xargs stat -c %i | sort | uniq | wc -l 100000 # sync # echo 3 > /proc/sys/vm/drop_caches # keyctl new_session # find edir -type f | xargs stat -c %i | sort | uniq | wc -l 99999 Cc: <stable@vger.kernel.org> Reported-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> (fixed f2fs_dentry_hash() to work even when the hash is 0) Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2017-04-24 10:00:08 -07:00
f2fs: add core directory operations this adds core functions to find, add, delete, and link dentries. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-14 16:59:04 +09:00
f2fs: clean up unused variables and return values This patch cleans up a couple of unnecessary codes related to unused variables and return values. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-12-26 14:39:50 +09:00
f2fs: add core directory operations this adds core functions to find, add, delete, and link dentries. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-14 16:59:04 +09:00
f2fs: fix wrong casting for dentry name The dentry name type is unsigned char *. If we don't match this type, some character codes can be changed by signed bit. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2014-08-29 00:26:50 -07:00
f2fs: add core directory operations this adds core functions to find, add, delete, and link dentries. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-14 16:59:04 +09:00
f2fs: fix wrong casting for dentry name The dentry name type is unsigned char *. If we don't match this type, some character codes can be changed by signed bit. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2014-08-29 00:26:50 -07:00
f2fs: arguments cleanup of finding file flow functions Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2014-06-24 18:21:23 +08:00
f2fs: add core directory operations this adds core functions to find, add, delete, and link dentries. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-14 16:59:04 +09:00
f2fs: check entire encrypted bigname when finding a dentry If user has no key under an encrypted dir, fscrypt gives digested dentries. Previously, when looking up a dentry, f2fs only checks its hash value with first 4 bytes of the digested dentry, which didn't handle hash collisions fully. This patch enhances to check entire dentry bytes likewise ext4. Eric reported how to reproduce this issue by: # seq -f "edir/abcdefghijklmnopqrstuvwxyz012345%.0f" 100000 | xargs touch # find edir -type f | xargs stat -c %i | sort | uniq | wc -l 100000 # sync # echo 3 > /proc/sys/vm/drop_caches # keyctl new_session # find edir -type f | xargs stat -c %i | sort | uniq | wc -l 99999 Cc: <stable@vger.kernel.org> Reported-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> (fixed f2fs_dentry_hash() to work even when the hash is 0) Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2017-04-24 10:00:08 -07:00
f2fs: introduce dot and dotdot name check This patch adds an inline function to check dot and dotdot names. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-04-26 00:15:29 -07:00
f2fs: fix up f2fs_get_parent issue to retrieve correct parent inode number Test Case: [NFS Client] ls -lR . [NFS Server] while [ 1 ] do echo 3 > /proc/sys/vm/drop_caches done Error on NFS Client: "No such file or directory" When cache is dropped at the server, it results in lookup failure at the NFS client due to non-connection with the parent. The default path is it initiates a lookup by calculating the hash value for the name, even though the hash values stored on the disk for "." and ".." is maintained as zero, which results in failure from find_in_block due to not matching HASH values. Fix up, by using the correct hashing values for these entries. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-12-13 23:44:11 +09:00
f2fs: add core directory operations this adds core functions to find, add, delete, and link dentries. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-14 16:59:04 +09:00
f2fs: unify string length declarations and usage This patch is intended to unify string length declarations and usage. There are number of calls to strlen which return size_t object. The size of this object depends on compiler if it will be bigger, equal or even smaller than an unsigned int Signed-off-by: Leon Romanovsky <leon@leon.nu> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-12-27 19:55:46 +02:00
f2fs: add core directory operations this adds core functions to find, add, delete, and link dentries. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-14 16:59:04 +09:00
f2fs: unify string length declarations and usage This patch is intended to unify string length declarations and usage. There are number of calls to strlen which return size_t object. The size of this object depends on compiler if it will be bigger, equal or even smaller than an unsigned int Signed-off-by: Leon Romanovsky <leon@leon.nu> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-12-27 19:55:46 +02:00
f2fs: add core directory operations this adds core functions to find, add, delete, and link dentries. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-14 16:59:04 +09:00
f2fs: fix endian conversion bugs reported by sparse This patch should resolve the bugs reported by the sparse tool. Initial reports were written by "kbuild test robot" managed by fengguang.wu. In my local machines, I've tested also by running: > make C=2 CF="-D__CHECK_ENDIAN__" Accordingly, I've found lots of warnings and bugs related to the endian conversion. And I've fixed all at this moment. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-28 16:12:41 +09:00
f2fs: add core directory operations this adds core functions to find, add, delete, and link dentries. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-14 16:59:04 +09:00