Re: getuid() vs. geteuid() in auditctl
On Friday, March 16, 2012 05:50:56 PM Peter Moody wrote:
line 1162 in auditctl.c has this:
#ifndef DEBUG
/* Make sure we are root */
if (getuid() != 0) {
fprintf(stderr, "You must be root to run this program.\n");
return 4;
}
#endif
Is there any particular reason to use getuid() there as opposed to
geteuid()?
I suppose it doesn't matter. I never envisioned having a helper application, so
that why its the way it is. Since we are optionally linking in libcap-ng, I
suppose we could even check the capability rather than the euid. Also note that
for certification purposes the file permissions are restricted.
-Steve
In my particular case, we have a setuid helper that allows
a normal user to run 'auditctl -l' (with a clean environment), and
this prevents the setuid helper from working.