From: Corinna Vinschen <corinna-cygwin@cygwin.com>
To: cygwin-patches@cygwin.com
Subject: Re: [PATCH v2 2/2] Respect `db_home` setting even for the SYSTEM account
Date: Thu, 17 Dec 2015 21:02:00 -0000 [thread overview]
Message-ID: <20151217210235.GD3507@calimero.vinschen.de> (raw)
In-Reply-To: <20151217204929.GB3507@calimero.vinschen.de>
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On Dec 17 21:49, Corinna Vinschen wrote:
> On Dec 17 19:05, Johannes Schindelin wrote:
> > We should not blindly set the home directory of the SYSTEM account to
> > /home/SYSTEM, especially not when that value disagrees with what is
> > configured via the `db_home` line in the `/etc/nsswitch.conf` file.
> >
> > This fixes https://github.com/git-for-windows/git/issues/435
> >
> > Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
> > ---
> > winsup/cygwin/uinfo.cc | 6 +++++-
> > 1 file changed, 5 insertions(+), 1 deletion(-)
> >
> > diff --git a/winsup/cygwin/uinfo.cc b/winsup/cygwin/uinfo.cc
> > index a5d6270..8c51b82 100644
> > --- a/winsup/cygwin/uinfo.cc
> > +++ b/winsup/cygwin/uinfo.cc
> > @@ -2129,7 +2129,11 @@ pwdgrp::fetch_account_from_windows (fetch_user_arg_t &arg, cyg_ldap *pldap)
> > it to a well-known group here. */
> > if (acc_type == SidTypeUser
> > && (sid_sub_auth_count (sid) <= 3 || sid_id_auth (sid) == 11))
> > - acc_type = SidTypeWellKnownGroup;
> > + {
> > + acc_type = SidTypeWellKnownGroup;
> > + home = cygheap->pg.get_home (pldap, sid, dom, domain, name,
> > + fully_qualified_name);
>
> Uhm, that's a bit over the top, isn't it? It will affect all S-1-5-X
> accounts as well as the S-1-5-11 Windows account SIDs. Is that really
s/S-1-5-11/S-1-11/, sorry.
> what you want?
>
> Using pldap here may SEGV in cygheap_pwdgrp::get_home, btw, because
> it may be NULL. cygheap_pwdgrp::get_home doesn't check pldap for
> validity, it expects a valid pointer. You could either use cldap, or
> cygheap_pwdgrp::get_home would have to check pldap before using it.
>
> However, either way there's another problem: Independently of the
> configured db_home schemes, you don't want to ask the DC for info on
> these builtin accounts. The better approach might be to call the
> PUSER_INFO_3 variant of cygheap_pwdgrp::get_home with a NULL ui
> pointer and just check for ui in the NSS_SCHEME_DESC case. The other
> called functions fetch_windows_home and fetch_from_path both can
> live with both pointers, pldap and ui being NULL.
Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Maintainer cygwin AT cygwin DOT com
Red Hat
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next prev parent reply other threads:[~2015-12-17 21:02 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-16 13:06 [PATCH] Allow overriding the home directory via the HOME variable Johannes Schindelin
2015-10-21 18:32 ` Corinna Vinschen
2015-10-22 15:38 ` Johannes Schindelin
2015-10-23 9:10 ` Corinna Vinschen
2015-10-23 9:41 ` Corinna Vinschen
2015-10-23 12:00 ` Johannes Schindelin
2015-12-17 18:05 ` [PATCH v2 0/2] Support deriving the current user's home directory via HOME Johannes Schindelin
2015-12-17 18:05 ` [PATCH v2 1/2] Allow deriving the current user's home directory via the HOME variable Johannes Schindelin
2015-12-17 20:20 ` Corinna Vinschen
2022-09-21 11:58 ` Johannes Schindelin
2022-10-18 17:02 ` Corinna Vinschen
2022-10-23 21:04 ` Johannes Schindelin
2022-10-24 11:37 ` Corinna Vinschen
2022-11-10 15:16 ` Johannes Schindelin
2022-11-10 15:22 ` Corinna Vinschen
2022-11-18 8:18 ` Johannes Schindelin
2022-11-21 11:41 ` Corinna Vinschen
2023-03-28 8:21 ` Johannes Schindelin
2015-12-17 18:05 ` [PATCH v2 2/2] Respect `db_home` setting even for the SYSTEM account Johannes Schindelin
2015-12-17 20:49 ` Corinna Vinschen
2015-12-17 21:02 ` Corinna Vinschen [this message]
2022-09-21 12:00 ` Johannes Schindelin
2022-09-21 11:51 ` [PATCH v3 0/3] Support deriving the current user's home directory via HOME Johannes Schindelin
2022-09-21 11:51 ` [PATCH v3 1/3] Allow deriving the current user's home directory via the HOME variable Johannes Schindelin
2022-09-21 11:52 ` [PATCH v3 2/3] Respect `db_home` setting even for SYSTEM/Microsoft accounts Johannes Schindelin
2022-09-21 11:52 ` [PATCH v3 3/3] Respect `db_home: env` even when no uid can be determined Johannes Schindelin
2023-03-28 8:17 ` [PATCH v4 0/3] Support deriving the current user's home directory via HOME Johannes Schindelin
2023-03-28 8:17 ` [PATCH v4 1/3] Allow deriving the current user's home directory via the HOME variable Johannes Schindelin
2023-03-28 10:35 ` Corinna Vinschen
2023-03-28 12:34 ` Jon Turney
2023-03-28 13:31 ` Corinna Vinschen
2023-03-29 8:36 ` Corinna Vinschen
2023-04-03 6:39 ` Johannes Schindelin
2023-03-28 8:17 ` [PATCH v4 2/3] Respect `db_home` setting even for SYSTEM/Microsoft accounts Johannes Schindelin
2023-03-28 10:16 ` Corinna Vinschen
2023-04-03 6:36 ` Johannes Schindelin
2023-04-03 10:59 ` Corinna Vinschen
2023-04-03 13:32 ` Johannes Schindelin
2023-03-28 8:17 ` [PATCH v4 3/3] Respect `db_home: env` even when no uid can be determined Johannes Schindelin
2023-03-28 10:17 ` Corinna Vinschen
2023-04-03 6:45 ` Johannes Schindelin
2023-04-03 13:12 ` Johannes Schindelin
2023-04-03 13:29 ` Corinna Vinschen
2023-04-03 13:57 ` Johannes Schindelin
2023-04-03 19:23 ` Corinna Vinschen
2023-04-04 15:11 ` Johannes Schindelin
2023-04-03 13:19 ` Johannes Schindelin
2023-04-03 14:44 ` [PATCH v5 0/3] Support deriving the current user's home directory via HOME Johannes Schindelin
2023-04-03 14:44 ` [PATCH v5 1/3] Allow deriving the current user's home directory via the HOME variable Johannes Schindelin
2023-04-03 18:36 ` Corinna Vinschen
2023-04-04 15:12 ` Johannes Schindelin
2023-04-03 14:45 ` [PATCH v5 2/3] Respect `db_home` setting even for SYSTEM/Microsoft accounts Johannes Schindelin
2023-04-03 18:37 ` Corinna Vinschen
2023-04-04 15:12 ` Johannes Schindelin
2023-04-03 14:45 ` [PATCH v5 3/3] Respect `db_home: env` even when no uid can be determined Johannes Schindelin
2023-04-04 15:07 ` [PATCH v6 0/4] Support deriving the current user's home directory via HOME Johannes Schindelin
2023-04-04 15:07 ` [PATCH v6 1/4] Allow deriving the current user's home directory via the HOME variable Johannes Schindelin
2023-04-04 15:07 ` [PATCH v6 2/4] Respect `db_home` setting even for SYSTEM/Microsoft accounts Johannes Schindelin
2023-04-04 15:07 ` [PATCH v6 3/4] uinfo: special-case IIS APPPOOL accounts Johannes Schindelin
2023-04-04 15:07 ` [PATCH v6 4/4] Do not rely on `getenv ("HOME")`'s path conversion Johannes Schindelin
2023-04-06 8:37 ` Corinna Vinschen
2023-04-06 9:54 ` Johannes Schindelin
2023-04-06 10:28 ` Corinna Vinschen
2023-05-22 11:12 ` [PATCH v7 0/4] Support deriving the current user's home directory via HOME Johannes Schindelin
2023-05-22 11:12 ` [PATCH v7 1/4] Allow deriving the current user's home directory via the HOME variable Johannes Schindelin
2023-05-22 11:12 ` [PATCH v7 2/4] Respect `db_home` setting even for SYSTEM/Microsoft accounts Johannes Schindelin
2023-05-22 11:12 ` [PATCH v7 3/4] uinfo: special-case IIS APPPOOL accounts Johannes Schindelin
2023-05-22 11:13 ` [PATCH v7 4/4] Do not rely on `getenv ("HOME")`'s path conversion Johannes Schindelin
2023-06-06 13:33 ` [PATCH v7 0/4] Support deriving the current user's home directory via HOME Corinna Vinschen
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