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snd_ctl_activate_id(9) [centos man page]

SND_CTL_ACTIVATE_ID(9)						 Control/Mixer API					    SND_CTL_ACTIVATE_ID(9)

snd_ctl_activate_id - activate/inactivate the control of the given id SYNOPSIS
int snd_ctl_activate_id(struct snd_card * card, struct snd_ctl_elem_id * id, int active); ARGUMENTS
card the card instance id the control id to activate/inactivate active non-zero to activate DESCRIPTION
Finds the control instance with the given id, and activate or inactivate the control together with notification, if changed. RETURN
0 if unchanged, 1 if changed, or a negative error code on failure. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 SND_CTL_ACTIVATE_ID(9)

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SCF_Card_reset(3SMARTCARD)				    Smartcard Library Functions 				SCF_Card_reset(3SMARTCARD)

SCF_Card_reset - perform a reset of a smartcard SYNOPSIS
cc [ flag... ] file... -lsmartcard [ library...] #include <smartcard/scf.h> SCF_Status_t SCF_Card_reset(SCF_Card_t card); PARAMETERS
card The card (from SCF_Terminal_getCard(3SMARTCARD)) to be reset DESCRIPTION
The SCF_Card_reset() function causes the specified smartcard to be reset by the terminal. A card can be reset only if it has not been locked (with SCF_Card_lock(3SMARTCARD)) by another client. A client wishing to reset a card should either first call SCF_Card_lock() to obtain the card lock, or be prepared to retry the reset operation if it fails because another client holds the card lock. When the card is reset, any SCF_Card_t object representing the card will continue to remain valid after the reset. When the reset occurs, an SCF_EVENT_CARDRESET event will be sent to all registered event listeners for the terminal (assuming they registered for this event). This is the only notification of a reset provided to SCF clients. When a client receives this event, it should be prepared to reinitialize any state on the card that might have been interrupted by the reset. New information about the card (for example, ATR, if it changed) can also be available from SCF_Card_getInfo(3SMARTCARD). RETURN VALUES
If the card is successfully reset, SCF_STATUS_SUCCESS is returned. Otherwise, the status of the card remains unchanged and an error value is returned. ERRORS
The SCF_Card_reset() function will fail if: SCF_STATUS_BADHANDLE The specified card has been closed or is invalid. SCF_STATUS_CARDLOCKED The card cannot be reset because another client holds a lock on the card. SCF_STATUS_CARDREMOVED The card cannot be reset because the card represented by the SCF_Card_t has been removed. SCF_STATUS_COMMERROR The connection to the server was lost. SCF_STATUS_FAILED An internal error occured. EXAMPLES
Example 1: Reset a card. SCF_Status_t status; SCF_Card_t myCard; /* ( SCF_Terminal_getCard to open myCard...) */ status = SCF_Card_lock(myCard, SCF_TIMEOUT_MAX); if (status != SCF_STATUS_SUCCESS) exit(1); status = SCF_Card_reset(myCard); if (status != SCF_STATUS_SUCCESS) exit(1); status = SCF_Card_unlock(myCard); if (status != SCF_STATUS_SUCCESS) exit(1); /* ... */ ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
libsmartcard(3LIB), SCF_Card_getInfo(3SMARTCARD), SCF_Card_lock(3SMARTCARD), SCF_Terminal_addEventListener(3SMARTCARD), SCF_Terminal_get- Card(3SMARTCARD), attributes(5) SunOS 5.10 28 Feb 2001 SCF_Card_reset(3SMARTCARD)
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