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tdpkg
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Use it in real world. Change LD_PRELOAD to point to absolute path of the library itself

master
Luca Bruno 2010-03-14 22:27:47 +01:00
parent 553411c616
commit 51af55cafb
1 changed files with 15 additions and 3 deletions
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18
tdpkg.c
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@ -47,6 +47,7 @@ static struct OpenState
size_t read;
} open_state;
#define CACHE_FILENAME "/var/lib/dpkg/info/tdpkg.cache"
static int cache_initialized;
/* called once library is preloaded */
@ -58,6 +59,18 @@ void _init (void)
else
return;
/* use absolute path for current library */
char *ld_preload = getenv ("LD_PRELOAD");
if (ld_preload)
{
char *abspath = realpath (ld_preload, NULL);
if (abspath)
{
setenv ("LD_PRELOAD", abspath, 1);
free (abspath);
}
}
memset (&open_state, '\0', sizeof (open_state));
open_state.fd = -1;
@ -68,11 +81,10 @@ void _init (void)
realclose = dlsym (RTLD_NEXT, "close");
realrename = dlsym (RTLD_NEXT, "rename");
const char* cache_filename = "cache.db";
if (!tdpkg_cache_initialize (cache_filename))
if (!tdpkg_cache_initialize (CACHE_FILENAME))
cache_initialized = 1;
else
fprintf (stderr, "tdpkg: cache at %s initialization failed, no wrapping\n", cache_filename);
fprintf (stderr, "tdpkg: cache at %s initialization failed, no wrapping\n", CACHE_FILENAME);
}
static int