BSTR_PRINTF(9) Basic C Library Functions BSTR_PRINTF(9)
NAME bstr_printf - Format a string from binary arguments and place it in a buffer
SYNOPSIS int bstr_printf(char * buf, size_t size, const char * fmt, const u32 * bin_buf);
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
bin_buf Binary arguments for the format string
DESCRIPTION This function like C99 vsnprintf, but the difference is that vsnprintf gets arguments from stack, and bstr_printf gets arguments from bin_buf which is a binary buffer that generated by vbin_printf.
The format follows C99 vsnprintf, but has some extensions: see vsnprintf comment for details.
The return value is the number of characters which would be generated for the given input, excluding the trailing ´ ´, as per ISO C99. If you want to have the exact number of characters written into buf as return value (not including the trailing ´ ´), use vscnprintf. If the return is greater than or equal to size, the resulting string is truncated.
COPYRIGHT Kernel Hackers Manual 2.6. May 2011 BSTR_PRINTF(9)