From: David Gibson <david@gibson.dropbear.id.au>
To: passt-dev@passt.top
Subject: [PATCH v3 10/10] Allow --userns when pasta spawns a command
Date: Mon, 12 Sep 2022 22:24:08 +1000 [thread overview]
Message-ID: <20220912122408.1372372-11-david@gibson.dropbear.id.au> (raw)
In-Reply-To: <20220912122408.1372372-1-david@gibson.dropbear.id.au>
[-- Attachment #1: Type: text/plain, Size: 1410 bytes --]
Currently --userns is only allowed when pasta is attaching to an existing
netns or PID, and is prohibited when creating a new netns by spawning a
command or shell.
With the new handling of userns, this check isn't neccessary. I'm not sure
if there's any use case for --userns with a spawned command, but it's
strictly more flexible and requires zero extra code, so we might as well.
Signed-off-by: David Gibson <david(a)gibson.dropbear.id.au>
---
conf.c | 5 -----
passt.1 | 2 --
2 files changed, 7 deletions(-)
diff --git a/conf.c b/conf.c
index 7f32859..d80233c 100644
--- a/conf.c
+++ b/conf.c
@@ -561,11 +561,6 @@ static int conf_pasta_ns(int *netns_only, char *userns, char *netns,
}
}
- if (*userns && !*netns) {
- err("--userns requires --netns or PID");
- return -EINVAL;
- }
-
/* Attaching to a netns/PID, with no userns given */
if (*netns && !*userns)
*netns_only = 1;
diff --git a/passt.1 b/passt.1
index 88cc879..83395bc 100644
--- a/passt.1
+++ b/passt.1
@@ -453,8 +453,6 @@ Default is \fBauto\fR.
Target user namespace to join, as a path. If PID is given, without this option,
the user namespace will be the one of the corresponding process.
-This option requires --netns or a PID to be specified.
-
.TP
.BR \-\-netns " " \fIspec
Target network namespace to join, as a path or a name. A name is treated as
--
@@ -453,8 +453,6 @@ Default is \fBauto\fR.
Target user namespace to join, as a path. If PID is given, without this option,
the user namespace will be the one of the corresponding process.
-This option requires --netns or a PID to be specified.
-
.TP
.BR \-\-netns " " \fIspec
Target network namespace to join, as a path or a name. A name is treated as
--
2.37.3
prev parent reply other threads:[~2022-09-12 12:24 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-12 12:23 [PATCH v3 00/10] Clean up handling of userns David Gibson
2022-09-12 12:23 ` [PATCH v3 01/10] Don't store UID & GID persistently in the context structure David Gibson
2022-09-12 12:24 ` [PATCH v3 02/10] Split checking for root from dropping root privilege David Gibson
2022-09-12 12:24 ` [PATCH v3 03/10] Consolidate determination of UID/GID to run as David Gibson
2022-09-12 12:24 ` [PATCH v3 04/10] Safer handling if we can't open /proc/self/uid_map David Gibson
2022-09-12 12:24 ` [PATCH v3 05/10] Move self-isolation code into a separate file David Gibson
2022-09-12 12:24 ` [PATCH v3 06/10] Consolidate validation of pasta namespace options David Gibson
2022-09-12 12:24 ` [PATCH v3 07/10] Clean up and rename conf_ns_open() David Gibson
2022-09-12 12:24 ` [PATCH v3 08/10] Correctly handle --netns-only in pasta_start_ns() David Gibson
2022-09-12 12:24 ` [PATCH v3 09/10] Handle userns isolation and dropping root at the same time David Gibson
2022-09-12 12:24 ` David Gibson [this message]
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