d_hash_and_lookup – hash the qstr then search for a dentry Synopsis struct dentry *d_hash_and_lookup(struct dentry *dir, struct qstr *name); Arguments dir Directory to search in name qstr of name we wish to find Description On lookup failure NULL is returned; on bad name – ERR_PTR(-error) Copyright
d_find_any_alias – find any alias for a given inode Synopsis struct dentry *d_find_any_alias(struct inode *inode); Arguments inode inode to find an alias for Description If any aliases exist for the given inode, take and return a reference for one of them. If no aliases exist, return NULL. Copyright
d_exact_alias – find and hash an exact unhashed alias Synopsis struct dentry *d_exact_alias(struct dentry *entry, struct inode *inode); Arguments entry dentry to add inode The inode to go with this dentry Description If an unhashed dentry with the same name/parent and desired inode already exists, hash and return it. Otherwise, return NULL. Parent directory should…
d_delete – delete a dentry Synopsis void d_delete(struct dentry *dentry); Arguments dentry The dentry to delete Description Turn the dentry into a negative dentry if possible, otherwise remove it from the hash queues so it can be deleted later Copyright
d_backing_inode – Get upper or lower inode we should be using Synopsis struct inode *d_backing_inode(const struct dentry *upper); Arguments upper The upper layer Description This is the helper that should be used to get at the inode that will be used if this dentry were to be opened as a file. The inode may be…
d_backing_dentry – Get upper or lower dentry we should be using Synopsis struct dentry *d_backing_dentry(struct dentry *upper); Arguments upper The upper layer Description This is the helper that should be used to get the dentry of the inode that will be used if this dentry were opened as a file. It may be the upper…
d_alloc_pseudo – allocate a dentry (for lookup-less filesystems) Synopsis struct dentry *d_alloc_pseudo(struct super_block *sb, const struct qstr *name); Arguments sb the superblock name qstr of the name Description For a filesystem that just pins its dentries in memory and never performs lookups at all, return an unhashed IS_ROOT dentry. Copyright
d_alloc – allocate a dcache entry Synopsis struct dentry *d_alloc(struct dentry *parent, const struct qstr *name); Arguments parent parent of entry to allocate name qstr of the name Description Allocates a dentry. It returns NULL if there is insufficient memory available. On a success the dentry is returned. The name passed in is copied and…
d_add_ci – lookup or allocate new dentry with case-exact name Synopsis struct dentry *d_add_ci(struct dentry *dentry, struct inode *inode, struct qstr *name); Arguments dentry the negative dentry that was passed to the parent’s lookup func inode the inode case-insensitive lookup has found name the case-exact name to be associated with the returned dentry Description This…
d_add – add dentry to hash queues Synopsis void d_add(struct dentry *entry, struct inode *inode); Arguments entry dentry to add inode The inode to attach to this dentry Description This adds the entry to the hash queues and initializes inode. The entry was actually filled in earlier during d_alloc. Copyright
current_time – Return FS time Synopsis struct timespec current_time(struct inode *inode); Arguments inode inode. Description Return the current time truncated to the time granularity supported by the fs. Note that inode and inode->sb cannot be NULL. Otherwise, the function warns and returns time without truncation. Copyright
csum_partial_copy_to_xdr – checksum and copy data Synopsis int csum_partial_copy_to_xdr(struct xdr_buf *xdr, struct sk_buff *skb); Arguments xdr target XDR buffer skb source skb Description We have set things up such that we perform the checksum of the UDP packet in parallel with the copies into the RPC client iovec. -DaveM Copyright
crypto_skcipher_setkey – set key for cipher Synopsis int crypto_skcipher_setkey(struct crypto_skcipher *tfm, const u8 *key, unsigned int keylen); Arguments tfm cipher handle key buffer holding the key keylen length of the key in bytes Description The caller provided key is set for the skcipher referenced by the cipher handle. Note, the key length determines the cipher…
crypto_skcipher_reqtfm – obtain cipher handle from request Synopsis struct crypto_skcipher *crypto_skcipher_reqtfm(struct skcipher_request *req); Arguments req skcipher_request out of which the cipher handle is to be obtained Description Return the crypto_skcipher handle when furnishing an skcipher_request data structure. Return crypto_skcipher handle Authors Stephan Mueller <smueller [at] chronox.de> Author. Marek Vasut <marek [at] denx.de> Author. Copyright
crypto_skcipher_reqsize – obtain size of the request data structure Synopsis unsigned int crypto_skcipher_reqsize(struct crypto_skcipher *tfm); Arguments tfm cipher handle Return number of bytes Authors Stephan Mueller <smueller [at] chronox.de> Author. Marek Vasut <marek [at] denx.de> Author. Copyright
crypto_skcipher_ivsize – obtain IV size Synopsis unsigned int crypto_skcipher_ivsize(struct crypto_skcipher *tfm); Arguments tfm cipher handle Description The size of the IV for the skcipher referenced by the cipher handle is returned. This IV size may be zero if the cipher does not need an IV. Return IV size in bytes Authors Stephan Mueller <smueller [at]…
crypto_skcipher_encrypt – encrypt plaintext Synopsis int crypto_skcipher_encrypt(struct skcipher_request *req); Arguments req reference to the skcipher_request handle that holds all information needed to perform the cipher operation Description Encrypt plaintext data using the skcipher_request handle. That data structure and how it is filled with data is discussed with the skcipher_request_* functions. Return 0 if the cipher…
crypto_skcipher_decrypt – decrypt ciphertext Synopsis int crypto_skcipher_decrypt(struct skcipher_request *req); Arguments req reference to the skcipher_request handle that holds all information needed to perform the cipher operation Description Decrypt ciphertext data using the skcipher_request handle. That data structure and how it is filled with data is discussed with the skcipher_request_* functions. Return 0 if the cipher…
crypto_skcipher_blocksize – obtain block size of cipher Synopsis unsigned int crypto_skcipher_blocksize(struct crypto_skcipher *tfm); Arguments tfm cipher handle Description The block size for the skcipher referenced with the cipher handle is returned. The caller may use that information to allocate appropriate memory for the data returned by the encryption or decryption operation Return block size of…
crypto_shash_update – add data to message digest for processing Synopsis int crypto_shash_update(struct shash_desc *desc, const u8 *data, unsigned int len); Arguments desc operational state handle that is already initialized data input data to be added to the message digest len length of the input data Description Updates the message digest state of the operational state…