flushpl

LD_PRELOAD hook to force fflush
git clone https://git.sinitax.com/sinitax/flushpl
Log | Files | Refs | LICENSE | sfeed.txt

main.c (460B)

      1#include <dlfcn.h>
      2
      3#include <stdlib.h>
      4#include <stdio.h>
      5
      6size_t
      7fwrite(const void *src, size_t size, size_t count, FILE *file)
      8{
      9	static size_t (*func)(const void *, size_t, size_t, FILE *) = NULL;
     10	static void *libc = NULL;
     11	size_t ret;
     12
     13	if (!libc) libc = dlopen("libc.so.6", RTLD_GLOBAL | RTLD_LAZY);
     14	if (libc && !func) func = dlsym(libc, "fwrite");
     15	if (!libc || !func) exit(1);
     16
     17	ret = (*func)(src, size, count, file);
     18	fflush(file);
     19
     20	return ret;
     21}
     22