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From: "Vladimir Lettiev" <thecrux@gmail.com>
To: "ALT Linux Team development discussions" <devel@lists.altlinux.org>
Subject: [devel] Q: sgid
Date: Mon, 22 Sep 2008 16:32:42 +0400
Message-ID: <3b8491740809220532u115d53faw994dad42938c704@mail.gmail.com> (raw)

Добрый день.

Вот такой код:

#include <stdio.h>
#include <stdlib.h>
#include <grp.h>

int main(int argc, char *argv[]) {
	gid_t egid;
	struct group *group;

	egid = getegid ();
	group = getgrgid (egid);
	
	fprintf (stderr, "egid: %d, egroup: %s\n", egid, group->gr_name);
}

скомпилировал, поменял группу владельца на root, установил sgid флаг

$ gcc -o program program.c
$ sudo chgrp root program
$ sudo chmod 2755 program

$ ./program
egid:500, egroup:crux

?

Это всё происходит на системе с ALT Sisyphus.
Таже самая программа собранная в ubuntu, как и ожидалось, выдаёт:
egid:0, egroup: root

Почему так?

-- 
Vladimir Lettiev aka crux <theCrux@gmail.com>

             reply	other threads:[~2008-09-22 12:32 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-09-22 12:32 Vladimir Lettiev [this message]
2008-09-22 12:38 ` Kirill A. Shutemov
2008-09-22 12:43   ` Vladimir Lettiev

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