rpctrace: Print beyond '\0' in MACH_MSG_TYPE_CHAR.

This will now display the 'argv: data_t' argument of file_exec
as e.g. "who\0am\0i\0" rather than just "who".  In contrast,
the 'file_name: string_t' argument of dir_lookup will still be
truncated at the first null character.

The previous implementation might crash if an out-of-line
char array exactly fills a page and does not contain any
null characters.

* utils/rpctrace.c (print_data): On MACH_MSG_TYPE_STRING and
MACH_MSG_TYPE_CHAR, check for end of buffer before checking for a null
character.  On MACH_MSG_TYPE_CHAR only, continue printing past null
characters.

0 files changed, 0 insertions, 0 deletions