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Test Your Knowledge in Computers #582
Difficulty: Medium
A buffered input or output stream is one in which data that is read or written is actually stored in memory in a buffer until such a time as the buffer is flushed and the accumulated data is passed to or from the actual file.
True or False?
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bioinit(9f) [bsd man page]

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

NAME
bioinit - initialize a buffer structure SYNOPSIS
#include <sys/ddi.h> #include <sys/sunddi.h> voidbioinit(struct buf *bp); INTERFACE LEVEL
Solaris DDI specific (Solaris DDI). PARAMETERS
bp Pointer to the buffer header structure. DESCRIPTION
The bioinit() function initializes a buf(9S) structure. A buffer structure contains state information which has to be initialized if the memory for the buffer was allocated using kmem_alloc(9F). This is not necessary for a buffer allocated using getrbuf(9F) because getrbuf() will call bioinit() directly. CONTEXT
The bioinit() function can be called from any context. EXAMPLES
Example 1: Using bioinit() struct buf *bp = kmem_alloc(biosize(), KM_SLEEP); bioinit(bp); /* use buffer */ SEE ALSO
biofini(9F), bioreset(9F), biosize(9F), getrbuf(9F), kmem_alloc(9F), buf(9S) Writing Device Drivers SunOS 5.10 20 Nov 1996 bioinit(9F)

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

NAME
bioinit - initialize a buffer structure SYNOPSIS
#include <sys/ddi.h> #include <sys/sunddi.h> voidbioinit(struct buf *bp); INTERFACE LEVEL
Solaris DDI specific (Solaris DDI). PARAMETERS
bp Pointer to the buffer header structure. DESCRIPTION
The bioinit() function initializes a buf(9S) structure. A buffer structure contains state information which has to be initialized if the memory for the buffer was allocated using kmem_alloc(9F). This is not necessary for a buffer allocated using getrbuf(9F) because getrbuf() will call bioinit() directly. CONTEXT
The bioinit() function can be called from any context. EXAMPLES
Example 1: Using bioinit() struct buf *bp = kmem_alloc(biosize(), KM_SLEEP); bioinit(bp); /* use buffer */ SEE ALSO
biofini(9F), bioreset(9F), biosize(9F), getrbuf(9F), kmem_alloc(9F), buf(9S) Writing Device Drivers SunOS 5.10 20 Nov 1996 bioinit(9F)

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