From 0f2915602e9dc5b0545ba284628d0c14c21e474b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=D0=BD=D0=B0=D0=B1?= Date: Wed, 7 Apr 2021 18:02:35 +0200 Subject: [PATCH] arc_summary3: just read /s/m/{mod}/version instead of spawning cat MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Reviewed-by: Brian Behlendorf Reviewed-by: Pavel Zakharov Reviewed-by: Ryan Moeller Signed-off-by: Ahelenia Ziemiańska Closes #11859 --- cmd/arc_summary/arc_summary3 | 20 +++++--------------- 1 file changed, 5 insertions(+), 15 deletions(-) diff --git a/cmd/arc_summary/arc_summary3 b/cmd/arc_summary/arc_summary3 index 96f7990e1..d6ddd06e7 100755 --- a/cmd/arc_summary/arc_summary3 +++ b/cmd/arc_summary/arc_summary3 @@ -161,21 +161,11 @@ elif sys.platform.startswith('linux'): # The original arc_summary called /sbin/modinfo/{spl,zfs} to get # the version information. We switch to /sys/module/{spl,zfs}/version # to make sure we get what is really loaded in the kernel - command = ["cat", "/sys/module/{0}/version".format(request)] - req = request.upper() - - # The recommended way to do this is with subprocess.run(). However, - # some installed versions of Python are < 3.5, so we offer them - # the option of doing it the old way (for now) - if 'run' in dir(subprocess): - info = subprocess.run(command, stdout=subprocess.PIPE, - universal_newlines=True) - version = info.stdout.strip() - else: - info = subprocess.check_output(command, universal_newlines=True) - version = info.strip() - - return version + try: + with open("/sys/module/{}/version".format(request)) as f: + return f.read().strip() + except: + return "(unknown)" def get_descriptions(request): """Get the descriptions of the Solaris Porting Layer (SPL) or the