diff options
Diffstat (limited to 'debug/sprintf_chk.c')
| -rw-r--r-- | debug/sprintf_chk.c | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/debug/sprintf_chk.c b/debug/sprintf_chk.c index 78214563dd..649e8ab4d5 100644 --- a/debug/sprintf_chk.c +++ b/debug/sprintf_chk.c @@ -15,22 +15,27 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ -#include <libioP.h> #include <stdarg.h> -#include <stdio.h> +#include <libio/libioP.h> + /* Write formatted output into S, according to the format string FORMAT. */ -/* VARARGS4 */ int -___sprintf_chk (char *s, int flags, size_t slen, const char *format, ...) +___sprintf_chk (char *s, int flag, size_t slen, const char *format, ...) { - va_list arg; - int done; + /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n + can only come from read-only format strings. */ + unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0; + va_list ap; + int ret; + + if (slen == 0) + __chk_fail (); - va_start (arg, format); - done = __vsprintf_chk (s, flags, slen, format, arg); - va_end (arg); + va_start (ap, format); + ret = __vsprintf_internal (s, slen, format, ap, mode); + va_end (ap); - return done; + return ret; } ldbl_strong_alias (___sprintf_chk, __sprintf_chk) |