43 lines
1.0 KiB
C
43 lines
1.0 KiB
C
|
#include <stdio.h>
|
||
|
|
#include <stdarg.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
#include <libgen.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
|
||
|
|
|
||
|
|
int main(int argc, char **argv, char **envp)
|
||
|
|
{
|
||
|
|
char *binfmt;
|
||
|
|
char **new_argv;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Check if our file name ends with -binfmt
|
||
|
|
*/
|
||
|
|
binfmt = argv[0] + strlen(argv[0]) - strlen("-binfmt");
|
||
|
|
if (strcmp(binfmt, "-binfmt")) {
|
||
|
|
fprintf(stderr, "%s: Invalid executable name\n", argv[0]);
|
||
|
|
exit(1);
|
||
|
|
}
|
||
|
|
if (argc < 3) {
|
||
|
|
fprintf(stderr, "%s: Please use me through binfmt with P flag\n",
|
||
|
|
argv[0]);
|
||
|
|
exit(1);
|
||
|
|
}
|
||
|
|
|
||
|
|
binfmt[0] = '\0';
|
||
|
|
/* Now argv[0] is the real qemu binary name */
|
||
|
|
|
||
|
|
new_argv = (char **)malloc((argc + 2) * sizeof(*new_argv));
|
||
|
|
if (argc > 3) {
|
||
|
|
memcpy(&new_argv[4], &argv[3], (argc - 3) * sizeof(*new_argv));
|
||
|
|
}
|
||
|
|
new_argv[0] = argv[0];
|
||
|
|
new_argv[1] = (char *)"-0";
|
||
|
|
new_argv[2] = argv[2];
|
||
|
|
new_argv[3] = argv[1];
|
||
|
|
new_argv[argc + 1] = NULL;
|
||
|
|
|
||
|
|
return execve(new_argv[0], new_argv, envp);
|
||
|
|
}
|