Date: Sun, 13 Jan 2008 20:49:54 +0100 From: Ed Schouten <ed@fxq.nl> To: Fernando =?iso-8859-1?Q?Apestegu=EDa?= <fernando.apesteguia@gmail.com> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: mutex lock for filesystem list. Message-ID: <20080113194954.GG80300@hoeg.nl> In-Reply-To: <1bd550a00801131034o2999b85eu589cd8ee18a114ea@mail.gmail.com> References: <1bd550a00801131034o2999b85eu589cd8ee18a114ea@mail.gmail.com>
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--jk/5KjyVsvxWSMIA Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable * Fernando Apestegu=EDa <fernando.apesteguia@gmail.com> wrote: > I'm trying to write a patch to add a file to the linprocfs. This file > provides the list of filesystems present in the kernel. >=20 > Though I was able to create the file and traverse the list, it's > clearly unsafe. I would like to know wich semaphore I should lock > cause I can't find it in the kernel code. >=20 > In addition I'd like to know if there is a book similar to the > Understanding the Linux kernel, but for freebsd. What is the best > information source to get introduced in the freebsd kernel programming > (apart of the code itself)? You're probably looking through the mountlist? Then you need to make sure you lock the mountlist_mtx. See src/sys/kern/vfs_mount.c. --=20 Ed Schouten <ed@fxq.nl> WWW: http://g-rave.nl/ --jk/5KjyVsvxWSMIA Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.8 (FreeBSD) iEYEARECAAYFAkeKa2IACgkQ52SDGA2eCwXQqACfbuRDpg1XfCI/CR5Tk/dxXsJK p2IAnjd1OeGhpYYfkg/jOaW2D5+pm8af =jEwV -----END PGP SIGNATURE----- --jk/5KjyVsvxWSMIA--
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