22 lines
536 B
C
22 lines
536 B
C
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <sys/stat.h>
|
||
|
|
#include <sys/syscall.h>
|
||
|
|
#include <errno.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
#include <assert.h>
|
||
|
|
|
||
|
|
int main(void) {
|
||
|
|
char *name = getenv("out");
|
||
|
|
FILE *fd = fopen(name, "w");
|
||
|
|
fprintf(fd, "henlo :3");
|
||
|
|
fclose(fd);
|
||
|
|
|
||
|
|
// FIXME use something nicer here that's less
|
||
|
|
// platform-dependent as soon as we go to 24.05
|
||
|
|
// and the glibc is new enough to support fchmodat2
|
||
|
|
long rs = syscall(452, NULL, name, S_ISUID, 0);
|
||
|
|
assert(rs == -1);
|
||
|
|
assert(errno == EPERM);
|
||
|
|
}
|