#include <unistd.h>
bool
-jailIntoTempDir()
+jailIntoTempDir(char const **err_pos)
{
+ gid_t const id = 1;
char buf[] = "/tmp/jaildir.XXXXXX";
- char const * d = mkdtemp(buf);
- gid_t id = 1;
+ char const * d = mkdtemp(buf);
+ char const * err = "mkdtemp()";
if (d==0 ||
- chdir(d)==-1 ||
- rmdir(d)==-1 ||
- chroot(".")==-1 ||
- setgroups(1, &id)==-1 ||
- setgid(id)==-1 ||
- setuid(id)==-1 ||
- getgid()!=id ||
- getuid()!=id)
+ (err="chdir()", chdir(d)==-1) ||
+ (err="rmdir()", rmdir(d)==-1) ||
+ (err="chroot()", chroot(".")==-1) ||
+ (err="setgroups()",setgroups(1, &id)==-1) ||
+ (err="setgid()", setgid(id)==-1) ||
+ (err="setuid()", setuid(id)==-1) ||
+ (err="getgid()", getgid()!=id) ||
+ (err="getuid()", getuid()!=id)) {
+ if (err_pos!=0) *err_pos = err;
return false;
+ }
return true;
}