The Linux Manuals (man pages) document is an important part of Linux documents. Linux Manuals are organized as several sections. Each section has a group of commands for a specific area in Linux usage, administration or development.
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…
crypto_shash_setkey – set key for message digest Synopsis int crypto_shash_setkey(struct crypto_shash *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 keyed message digest cipher. The cipher handle must point to a keyed…
crypto_shash_init – (re)initialize message digest Synopsis int crypto_shash_init(struct shash_desc *desc); Arguments desc operational state handle that is already filled Description The call (re-)initializes the message digest referenced by the operational state handle. Any potentially existing state created by previous operations is discarded. Return 0 if the message digest initialization was successful; < 0 if an…
crypto_shash_import – import operational state Synopsis int crypto_shash_import(struct shash_desc *desc, const void *in); Arguments desc reference to the operational state handle the state imported into in buffer holding the state Description This function imports the hash state into the operational state handle from the input buffer. That buffer should have been generated with the crypto_ahash_export…
crypto_shash_finup – calculate message digest of buffer Synopsis int crypto_shash_finup(struct shash_desc *desc, const u8 *data, unsigned int len, u8 *out); Arguments desc see crypto_shash_final data see crypto_shash_update len see crypto_shash_update out see crypto_shash_final Description This function is a “short-hand” for the function calls of crypto_shash_update and crypto_shash_final. The parameters have the same meaning as discussed…
crypto_shash_final – calculate message digest Synopsis int crypto_shash_final(struct shash_desc *desc, u8 *out); Arguments desc operational state handle that is already filled with data out output buffer filled with the message digest Description Finalize the message digest operation and create the message digest based on all data added to the cipher handle. The message digest is…
crypto_shash_export – extract operational state for message digest Synopsis int crypto_shash_export(struct shash_desc *desc, void *out); Arguments desc reference to the operational state handle whose state is exported out output buffer of sufficient size that can hold the hash state Description This function exports the hash state of the operational state handle into the caller-allocated output…