bzero(9F) Kernel Functions for Drivers bzero(9F)NAME
bzero - clear memory for a given number of bytes
SYNOPSIS
#include <sys/types.h>
#include <sys/ddi.h>
void bzero(void *addr, size_t bytes);
INTERFACE LEVEL
Architecture independent level 1 (DDI/DKI).
PARAMETERS
addr Starting virtual address of memory to be cleared.
bytes The number of bytes to clear starting at addr.
DESCRIPTION
bzero() clears a contiguous portion of memory by filling it with zeros.
CONTEXT
bzero() can be called from user or interrupt context.
SEE ALSO bcopy(9F), clrbuf(9F), kmem_zalloc(9F)
Writing Device Drivers
WARNINGS
The address range specified must be within the kernel space. No range checking is done. If an address outside of the kernel space is
selected, the driver may corrupt the system in an unpredictable way.
SunOS 5.10 1 May 1996 bzero(9F)
Check Out this Related Man Page
bstring(3C) Standard C Library Functions bstring(3C)NAME
bstring, bcopy, bcmp, bzero - memory operations
SYNOPSIS
#include <strings.h>
void bcopy(const void *s1, void *s2, size_t n);
int bcmp(const void *s1, const void *s2, size_t n);
void bzero(void *s, size_t n);
DESCRIPTION
The bcopy(), bcmp(), and bzero() functions operate as efficiently as possible on memory areas (arrays of bytes bounded by a count, not
terminated by a null character). They do not check for the overflow of any receiving memory area. These functions are similar to the
memcpy(), memcmp(), and memset() functions described on the memory(3C) manual page.
The bcopy() function copies n bytes from memory area s1 to s2. Copying between objects that overlap will take place correctly.
The bcmp() function compares the first n bytes of its arguments, returning 0 if they are identical and 1 otherwise. The bcmp() function
always returns 0 when n is 0.
The bzero() function sets the first n bytes in memory area s to 0.
WARNINGS
The bcopy() function takes parameters backwards from memcmp(). See memory(3C).
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO memory(3C), attributes(5), standards(5)SunOS 5.10 15 Apr 2002 bstring(3C)