Sat Feb 21 12:08:59 CET 2009 tobias@rautenkranz.ch

* create meminfo in memory

--- old-myth2/fopenRedirect.c 2014-10-30 08:04:51.000000000 +0100

+++ new-myth2/fopenRedirect.c 2014-10-30 08:04:51.000000000 +0100

@@ -23,50 +23,22 @@

* OTHER DEALINGS IN THE SOFTWARE.

*/

+#define _GNU_SOURCE

#include <stdio.h>

-

-#define __USE_GNU

#include <string.h>

-#include <stdlib.h>

-#include <stdio.h>

-#include <unistd.h>

#include <dlfcn.h>

/* Old meminfo emulating 256Mb */

-static const char meminfo_str[] =

+static char meminfo_str[] =

"root: total: used: free: shared: buffers: cached:\n"

"Mem: 268435456 0 268435456 0 0 0\n"

"Swap: 268435456 0 268435456\n";

-int tmp_meminfo = -1;

-

-/** Returns a stream to an meminfo file. */

FILE*

-make_meminfo()

-{

- FILE* tmp_meminfo = tmpfile();

-

- if (!tmp_meminfo)

- {

- perror("myth-meminfo: creating temponary meminfo");

- return NULL;

- }

-

- size_t len = fwrite(meminfo_str, 1, sizeof(meminfo_str), tmp_meminfo);

- if (len != sizeof(meminfo_str))

- {

- perror("myth-meminfo: writing temporary meminfo");

- return NULL;

- }

-

- rewind(tmp_meminfo);

-

- return tmp_meminfo;

-}

-

-FILE* fopen(const char *filename, const char *mode)

+fopen(const char *filename, const char *mode)

{

FILE* (*_fopen)(const char*,const char*) = dlsym(RTLD_NEXT, "fopen");

+

if (!_fopen)

{

fprintf(stderr, "myth-meminfo: dlsym: %s\n", dlerror());

@@ -77,7 +49,7 @@

{

fprintf(stderr, "myth-meminfo: fixing /proc/meminfo\n");

- return make_meminfo();

+ return fmemopen(meminfo_str, sizeof(meminfo_str), mode);

}

else

return _fopen(filename, mode);