Date: Thu, 27 Feb 2025 01:13:56 GMT From: Alexander Ziaee <ziaee@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 4e2ab411ce62 - stable/14 - make_dev.9: Fix mda_cr typo + polish Message-ID: <202502270113.51R1DuQn054710@gitrepo.freebsd.org>
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The branch stable/14 has been updated by ziaee: URL: https://cgit.FreeBSD.org/src/commit/?id=4e2ab411ce6239d7918eacfd1c4725bfc9508fa5 commit 4e2ab411ce6239d7918eacfd1c4725bfc9508fa5 Author: Alexander Ziaee <ziaee@FreeBSD.org> AuthorDate: 2025-02-11 20:42:27 +0000 Commit: Alexander Ziaee <ziaee@FreeBSD.org> CommitDate: 2025-02-27 00:55:14 +0000 make_dev.9: Fix mda_cr typo + polish The make_dev_args_init structure example said mda_cred, however the correct form is mda_cr according to the reporter and my git grep. A new document description has been contributed by jhb. While here, fix grammar and trivial typos (spacing, colons before examples, trailing delimiter) and spdx. MFC after: 3 days Reported by: jhb (much polish and document description) Reported by: Evgenii Ivanov on Community Discord Reviewed by: carlavilla, mhorne, jhb, kib Approved by: carlavilla, mhorne (mentors) Differential Revision: https://reviews.freebsd.org/D48516 (cherry picked from commit c48ca725a83c0c8b27210d50977835c0b916bf07) --- share/man/man9/make_dev.9 | 43 ++++++++++++++++++++++++------------------- 1 file changed, 24 insertions(+), 19 deletions(-) diff --git a/share/man/man9/make_dev.9 b/share/man/man9/make_dev.9 index 2beb38586593..052f9a0cfd87 100644 --- a/share/man/man9/make_dev.9 +++ b/share/man/man9/make_dev.9 @@ -1,3 +1,6 @@ +.\" +.\" SPDX-License-Identifier: BSD-2-Clause +.\" .\" Copyright (c) 1999 Chris Costello .\" All rights reserved. .\" @@ -22,7 +25,7 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.Dd March 2, 2016 +.Dd January 19, 2025 .Dt MAKE_DEV 9 .Os .Sh NAME @@ -38,9 +41,7 @@ .Nm destroy_dev_sched_cb , .Nm destroy_dev_drain , .Nm dev_depends -.Nd manage -.Vt cdev Ns 's -and DEVFS registration for devices +.Nd create and destroy character devices including devfs registration .Sh SYNOPSIS .In sys/param.h .In sys/conf.h @@ -105,6 +106,7 @@ struct make_dev_args { void *mda_si_drv2; }; .Ed +.Pp Before use and filling with the desired values, the structure must be initialized by the .Fn make_dev_args_init @@ -166,10 +168,10 @@ member of the initialized The .Va args.mda_flags argument alters the operation of -.Fn make_dev_s. +.Fn make_dev_s . The following values are currently accepted: .Pp -.Bl -tag -width "It Dv MAKEDEV_CHECKNAME" -compact -offset indent +.Bl -tag -width "MAKEDEV_CHECKNAME" -compact -offset indent .It Dv MAKEDEV_REF reference the created device .It Dv MAKEDEV_NOWAIT @@ -200,12 +202,13 @@ is specified. .Pp The .Xr dev_clone 9 -event handler shall specify +event handler shall specify the .Dv MAKEDEV_REF -flag when creating a device in response to lookup, to avoid race where -the device created is destroyed immediately after -.Xr devfs_lookup 9 -drops his reference to cdev. +flag when creating a device in response to lookup, to avoid a race where +the created device is immediately destroyed after +.Fn devfs_lookup +drops its reference to +.Fa cdev . .Pp The .Dv MAKEDEV_ETERNAL @@ -226,13 +229,14 @@ and the device name is invalid or already exists. .Pp The .Fn make_dev_p -use of the form +use of the form: .Bd -literal -offset indent struct cdev *dev; int res; res = make_dev_p(flags, &dev, cdevsw, cred, uid, gid, perms, name); .Ed -is equivalent to the code +.Pp +is equivalent to the code: .Bd -literal -offset indent struct cdev *dev; struct make_dev_args args; @@ -241,7 +245,7 @@ int res; make_dev_args_init(&args); args.mda_flags = flags; args.mda_devsw = cdevsw; -args.mda_cred = cred; +args.mda_cr = cred; args.mda_uid = uid; args.mda_gid = gid; args.mda_mode = perms; @@ -250,10 +254,11 @@ res = make_dev_s(&args, &dev, name); .Pp Similarly, the .Fn make_dev_credf -function call is equivalent to +function call is equivalent to: .Bd -literal -offset indent - (void) make_dev_s(&args, &dev, name); +(void) make_dev_s(&args, &dev, name); .Ed +.Pp In other words, .Fn make_dev_credf does not allow the caller to obtain the return value, and in @@ -263,14 +268,14 @@ options, the function asserts that the device creation succeeded. .Pp The .Fn make_dev_cred -function is equivalent to the call +function is equivalent to the call: .Bd -literal -offset indent make_dev_credf(0, cdevsw, unit, cr, uid, gid, perms, fmt, ...); .Ed .Pp The .Fn make_dev -function call is the same as +function call is the same as: .Bd -literal -offset indent make_dev_credf(0, cdevsw, unit, NULL, uid, gid, perms, fmt, ...); .Ed @@ -377,7 +382,7 @@ is called, with argument .Fa arg . The .Fn destroy_dev_sched -function is the same as +function is the same as: .Bd -literal -offset indent destroy_dev_sched_cb(cdev, NULL, NULL); .Ed
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