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biowait(9f) [centos man page]

biowait(9F)						   Kernel Functions for Drivers 					       biowait(9F)

NAME
biowait - suspend processes pending completion of block I/O SYNOPSIS
#include <sys/types.h> #include <sys/buf.h> int biowait(struct buf *bp); INTERFACE LEVEL
Architecture independent level 1 (DDI/DKI). PARAMETERS
bp Pointer to the buf structure describing the transfer. DESCRIPTION
Drivers allocating their own buf structures with getrbuf(9F) can use the biowait() function to suspend the current thread and wait for completion of the transfer. Drivers must call biodone(9F) when the transfer is complete to notify the thread blocked by biowait(). biodone() is usually called in the interrupt routine. RETURN VALUES
0 Upon success non-zero Upon I/O failure. biowait() calls geterror(9F) to retrieve the error number which it returns. CONTEXT
biowait() can be called from user context only. SEE ALSO
biodone(9F), geterror(9F), getrbuf(9F), buf(9S) Writing Device Drivers SunOS 5.10 11 Apr 1991 biowait(9F)

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biowait(9F)						   Kernel Functions for Drivers 					       biowait(9F)

NAME
biowait - suspend processes pending completion of block I/O SYNOPSIS
#include <sys/types.h> #include <sys/buf.h> int biowait(struct buf *bp); INTERFACE LEVEL
Architecture independent level 1 (DDI/DKI). PARAMETERS
bp Pointer to the buf structure describing the transfer. DESCRIPTION
Drivers allocating their own buf structures with getrbuf(9F) can use the biowait() function to suspend the current thread and wait for completion of the transfer. Drivers must call biodone(9F) when the transfer is complete to notify the thread blocked by biowait(). biodone() is usually called in the interrupt routine. RETURN VALUES
0 Upon success non-zero Upon I/O failure. biowait() calls geterror(9F) to retrieve the error number which it returns. CONTEXT
biowait() can be called from user context only. SEE ALSO
biodone(9F), geterror(9F), getrbuf(9F), buf(9S) Writing Device Drivers SunOS 5.10 11 Apr 1991 biowait(9F)
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