VSNPRINTF(9) Basic C Library Functions VSNPRINTF(9)NAMEvsnprintf - Format a string and place it in a buffer
SYNOPSIS
int vsnprintf(char * buf, size_t size, const char * fmt, va_list args);
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
args
Arguments for the format string
DESCRIPTION
This function follows C99 vsnprintf, but has some extensions: pS output
the name of a text symbol with offset ps output the name of a text
symbol without offset pF output the name of a function pointer with its
offset pf output the name of a function pointer without its offset pR
output the address range in a struct resource n is ignored
The return value is the number of characters which would be generated
for the given input, excluding the trailing ´\0´, as per ISO C99. If
you want to have the exact number of characters written into buf as
return value (not including the trailing ´\0´), use vscnprintf. If the
return is greater than or equal to size, the resulting string is
truncated.
Call this function if you are already dealing with a va_list. You
probably want snprintf instead.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 VSNPRINTF(9)
