b999d48941
We're losing the svn history (which we could probably keep if we tried hard enough) but don't consider that worthwhile. Note these tests are destructive, so run them only in a throwaway environment like a chroot, container, or vm. The tests/run.all script should be the one which launches all the tests. Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
51 lines
1.0 KiB
C
51 lines
1.0 KiB
C
/*
|
|
* gcc rename_failure.c -o rename_failure.so -shared -ldl
|
|
* LD_PRELOAD=./rename_failure.so FAILURE_PATH=/etc/shadow ./test /etc/shadow
|
|
*/
|
|
|
|
#define _GNU_SOURCE
|
|
#include <dlfcn.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <stdarg.h>
|
|
#include <fcntl.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <assert.h>
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
|
|
typedef int (*rename_type) (const char *old, const char *new);
|
|
static rename_type next_rename;
|
|
|
|
static const char *failure_path = NULL;
|
|
|
|
int rename (const char *old, const char *new)
|
|
{
|
|
if (NULL == next_rename)
|
|
{
|
|
next_rename = dlsym (RTLD_NEXT, "rename");
|
|
assert (NULL != next_rename);
|
|
}
|
|
if (NULL == failure_path) {
|
|
failure_path = getenv ("FAILURE_PATH");
|
|
if (NULL == failure_path) {
|
|
fputs ("No FAILURE_PATH defined\n", stderr);
|
|
}
|
|
}
|
|
|
|
if ( (NULL != new)
|
|
&& (NULL != failure_path)
|
|
&& (strcmp (new, failure_path) == 0))
|
|
{
|
|
fprintf (stderr, "rename FAILURE %s %s\n", old, new);
|
|
errno = EIO;
|
|
return -1;
|
|
}
|
|
|
|
return next_rename (old, new);
|
|
}
|
|
|