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nstool: Move description of its operation modes from comment to usage

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Easier to see it there.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
David Gibson 2023-04-06 13:28:08 +10:00 committed by Stefano Brivio
parent 2884ccd2e7
commit 42fb218347
1 changed files with 11 additions and 15 deletions
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26
test/nstool.c
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@ -4,20 +4,6 @@
*
* Copyright Red Hat
* Author: David Gibson <david@gibson.dropbear.id.au>
*
* Can run in 3 modes:
*
* nstool hold <path>
* Designed to be run inside a namespace, opens a Unix domain
* control socket at <path> and waits until instructed to stop
* with "nstool stop <path>"
* nstool pid <path>
* Prints the PID of the nstool hold process with control socket
* <path>. This is given in the PID namespace where nstool pid
* is executed, not the one where nstool hold is running
* nstool stop <path>
* Instruct the nstool hold with control socket at <path> to
* exit.
*/
#define _GNU_SOURCE
@ -38,7 +24,17 @@
static void usage(void)
{
die("Usage: nstool hold|pid|stop <socket path>\n");
die("Usage:\n"
" nstool hold SOCK\n"
" Run within a set of namespaces, open a Unix domain socket\n"
" (the \"control socket\") at SOCK and wait for requests from\n"
" other nstool subcommands.\n"
" nstool pid SOCK\n"
" Print the pid of the nstool hold process with control socket\n"
" at SOCK, as seen in the caller's namespace.\n"
" nstool stop SOCK\n"
" Instruct the nstool hold with control socket at SOCK to\n"
" terminate.\n");
}
static void hold(int fd, const struct sockaddr_un *addr)