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.
spi_populate_tag_msg – place a tag message in a buffer Synopsis int spi_populate_tag_msg(unsigned char *msg, struct scsi_cmnd *cmd); Arguments msg pointer to the area to place the tag cmd pointer to the scsi command for the tag Notes designed to create the correct type of tag message for the particular request. Returns the size of the…
spi_display_xfer_agreement – Print the current target transfer agreement Synopsis void spi_display_xfer_agreement(struct scsi_target *starget); Arguments starget The target for which to display the agreement Description Each SPI port is required to maintain a transfer agreement for each other port on the bus. This function prints a one-line summary of the current agreement; more detailed information is…
sparse_memory_present_with_active_regions – Call memory_present for each active range Synopsis void sparse_memory_present_with_active_regions(int nid); Arguments nid The node to call memory_present for. If MAX_NUMNODES, all nodes will be used. Description If an architecture guarantees that all ranges registered contain no holes and may be freed, this function may be used instead of calling memory_present manually. Copyright
spans_boundary – Check a packet can be ISA DMA’d Synopsis int spans_boundary(struct sk_buff *skb); Arguments skb The buffer to check Description Returns true if the buffer cross a DMA boundary on a PC. The poor thing can only DMA within a 64K block not across the edges of it. Author Alan Cox <alan [at] lxorguk.ukuu.org.uk>…
sockfd_lookup – Go from a file number to its socket slot Synopsis struct socket *sockfd_lookup(int fd, int *err); Arguments fd file handle err pointer to an error code return Description The file handle passed in is locked and the socket it is bound too is returned. If an error occurs the err pointer is overwritten…
sock_unregister – remove a protocol handler Synopsis void sock_unregister(int family); Arguments family protocol family to remove Description This function is called by a protocol handler that wants to remove its address family, and have it unlinked from the new socket creation. If protocol handler is a module, then it can use module reference counts to…
sock_tx_timestamp – checks whether the outgoing packet is to be time stamped Synopsis void sock_tx_timestamp(const struct sock *sk, __u16 tsflags, __u8 *tx_flags); Arguments sk socket sending this packet tsflags timestamping flags to use tx_flags completed with instructions for time stamping Note callers should take care of initial *tx_flags value (usually 0) Copyright
sock_release – close a socket Synopsis void sock_release(struct socket *sock); Arguments sock socket to close Description The socket is released from the protocol stack if it has a release callback, and the inode is then released if the socket is bound to an inode not a file. Copyright
sock_register – add a socket protocol handler Synopsis int sock_register(const struct net_proto_family *ops); Arguments ops description of protocol Description This function is called by a protocol handler that wants to advertise its address family, and have it linked into the socket interface. The value ops->family corresponds to the socket system call protocol family. Copyright
sock_poll_wait – place memory barrier behind the poll_wait call. Synopsis void sock_poll_wait(struct file *filp, wait_queue_head_t *wait_address, poll_table *p); Arguments filp file wait_address socket wait queue p poll_table Description See the comments in the wq_has_sleeper function. Copyright
sock_alloc – allocate a socket Synopsis struct socket *sock_alloc(void); Arguments void no arguments Description Allocate a new inode and socket object. The two are bound together and initialised. The socket is then returned. If we are out of inodes NULL is returned. Copyright
snprintf – Format a string and place it in a buffer Synopsis int snprintf(char *buf, size_t size, const char *fmt, …); Arguments buf The buffer to place the result into size The size of the buffer, including the trailing null space fmt The format string to use … Arguments for the format string Description The…
snd_unregister_device – unregister the device on the given card Synopsis int snd_unregister_device(struct device *dev); Arguments dev the device instance Description Unregisters the device file already registered via snd_register_device. Return Zero if successful, or a negative error code on failure. Copyright
snd_soc_update_bits – update codec register bits Synopsis int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned int reg, unsigned int mask, unsigned int value); Arguments codec audio codec reg codec register mask register mask value new value Description Writes new register value. Returns 1 for change, 0 for no change, or negative error code. Copyright
snd_soc_unregister_platform – Unregister a platform from the ASoC core Synopsis void snd_soc_unregister_platform(struct device *dev); Arguments dev platform to unregister Copyright
snd_soc_unregister_component – Unregister a component from the ASoC core Synopsis void snd_soc_unregister_component(struct device *dev); Arguments dev The device to unregister Copyright
snd_soc_unregister_codec – Unregister a codec from the ASoC core Synopsis void snd_soc_unregister_codec(struct device *dev); Arguments dev codec to unregister Copyright
snd_soc_unregister_card – Unregister a card with the ASoC core Synopsis int snd_soc_unregister_card(struct snd_soc_card *card); Arguments card Card to unregister Copyright
snd_soc_test_bits – test register for change Synopsis int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned int reg, unsigned int mask, unsigned int value); Arguments codec audio codec reg codec register mask register mask value new value Description Tests a register with a new value and checks if the new value is different from the old value. Returns 1…
snd_soc_set_runtime_hwparams – set the runtime hardware parameters Synopsis int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, const struct snd_pcm_hardware *hw); Arguments substream the pcm substream hw the hardware parameters Description Sets the substream runtime hardware parameters. Copyright