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From: David Laight <David.Laight@ACULAB.COM>
To: 'Bernd Petrovitsch' <bernd@petrovitsch.priv.at>,
	"Karstens, Nate" <Nate.Karstens@garmin.com>,
	Matthew Wilcox <willy@infradead.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>,
	Jeff Layton <jlayton@kernel.org>,
	"J. Bruce Fields" <bfields@fieldses.org>,
	Arnd Bergmann <arnd@arndb.de>,
	Richard Henderson <rth@twiddle.net>,
	Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
	Matt Turner <mattst88@gmail.com>,
	"James E.J. Bottomley" <James.Bottomley@hansenpartnership.com>,
	Helge Deller <deller@gmx.de>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
	"linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
	"linux-alpha@vger.kernel.org" <linux-alpha@vger.kernel.org>,
	"linux-parisc@vger.kernel.org" <linux-parisc@vger.kernel.org>,
	"sparclinux@vger.kernel.org" <sparclinux@vger.kernel.org>,
	"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Changli Gao <xiaosuo@gmail.com>
Subject: RE: [PATCH 1/4] fs: Implement close-on-fork
Date: Wed, 22 Apr 2020 16:55:58 +0000
Message-ID: <337320db094d4426a621858fa0f6d7fd@AcuMS.aculab.com> (raw)
In-Reply-To: <97f05204-a27c-7cc8-429a-edcf6eebaa11@petrovitsch.priv.at>

From: Bernd Petrovitsch
> Sent: 22 April 2020 17:32
...
> Apart from that, system() is a PITA even on
> single/non-threaded apps.

Not only that, it is bloody dangerous because (typically)
shell is doing post substitution syntax analysis.

If you need to run an external process you need to generate
an arv[] array containing the parameters.

	David

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Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)

  reply index

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-20  7:15 Nate Karstens
2020-04-20  7:15 ` [PATCH 1/4] fs: " Nate Karstens
2020-04-20 10:25   ` Eric Dumazet
2020-04-22  3:38     ` Changli Gao
2020-04-22  3:41       ` Changli Gao
2020-04-22  8:35     ` David Laight
2020-05-01 14:45     ` Karstens, Nate
2020-05-01 15:23       ` Matthew Wilcox
2020-05-03 13:52       ` David Laight
2020-04-22 15:36   ` Karstens, Nate
2020-04-22 15:43     ` Matthew Wilcox
2020-04-22 16:02       ` Karstens, Nate
2020-04-22 16:31         ` Bernd Petrovitsch
2020-04-22 16:55           ` David Laight [this message]
2020-04-23 12:34             ` Bernd Petrovitsch
2020-04-20  7:15 ` [PATCH 2/4] fs: Add O_CLOFORK flag for open(2) and dup3(2) Nate Karstens
2020-04-20  7:15 ` [PATCH 3/4] fs: Add F_DUPFD_CLOFORK to fcntl(2) Nate Karstens
2020-04-20  7:15 ` [PATCH 4/4] net: Add SOCK_CLOFORK Nate Karstens
2020-04-22 14:32 ` Implement close-on-fork James Bottomley
2020-04-22 15:01 ` Al Viro
2020-04-22 15:18   ` Matthew Wilcox
2020-04-22 15:34     ` James Bottomley
2020-04-22 16:00     ` Al Viro
2020-04-22 16:13       ` Al Viro
2020-05-04 13:46       ` Karstens, Nate

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