diff options
| author | Alejandro Colomar <alx@kernel.org> | 2024-04-26 15:06:49 +0200 |
|---|---|---|
| committer | Alejandro Colomar <alx@kernel.org> | 2024-05-02 01:24:19 +0200 |
| commit | dcde2f70372b49ec43efc5db864c9ff585d0a2dd (patch) | |
| tree | 78b9b7425130e4a5858e4c01a524d802423879ed /man/man3/makedev.3 | |
| parent | 12aca537ce78a41bbcdaf485209691e10f8002d7 (diff) | |
| download | man-pages-dcde2f70372b49ec43efc5db864c9ff585d0a2dd.tar.gz | |
man/, share/mk/: Move man*/ to man/
This is a scripted change:
$ mkdir man/;
$ mv man* man/;
$ ln -st . man/man*;
$ find share/mk/ -type f \
| xargs grep -l '^MANDIR *:=' \
| xargs sed -i '/^MANDIR *:=/s,$,/man,';
$ find share/mk/dist/ -type f \
| xargs grep -l man \
| xargs sed -i 's,man%,man/%,g';
Link: <https://lore.kernel.org/linux-man/YxcV4h+Xn7cd6+q2@pevik/T/>
Cc: Petr Vorel <pvorel@suse.cz>
Cc: Jakub Wilk <jwilk@jwilk.net>
Cc: Stefan Puiu <stefan.puiu@gmail.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
Diffstat (limited to 'man/man3/makedev.3')
| -rw-r--r-- | man/man3/makedev.3 | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/man/man3/makedev.3 b/man/man3/makedev.3 new file mode 100644 index 0000000000..7fd748e5fd --- /dev/null +++ b/man/man3/makedev.3 @@ -0,0 +1,92 @@ +'\" t +.\" Copyright (c) 2008 Linux Foundation, written by Michael Kerrisk +.\" <mtk.manpages@gmail.com> +.\" +.\" SPDX-License-Identifier: Linux-man-pages-copyleft +.\" +.TH makedev 3 (date) "Linux man-pages (unreleased)" +.SH NAME +makedev, major, minor \- manage a device number +.SH LIBRARY +Standard C library +.RI ( libc ", " \-lc ) +.SH SYNOPSIS +.nf +.B #include <sys/sysmacros.h> +.P +.BI "dev_t makedev(unsigned int " maj ", unsigned int " min ); +.P +.BI "unsigned int major(dev_t " dev ); +.BI "unsigned int minor(dev_t " dev ); +.fi +.SH DESCRIPTION +A device ID consists of two parts: +a major ID, identifying the class of the device, +and a minor ID, identifying a specific instance of a device in that class. +A device ID is represented using the type +.IR dev_t . +.P +Given major and minor device IDs, +.BR makedev () +combines these to produce a device ID, returned as the function result. +This device ID can be given to +.BR mknod (2), +for example. +.P +The +.BR major () +and +.BR minor () +functions perform the converse task: given a device ID, +they return, respectively, the major and minor components. +These macros can be useful to, for example, +decompose the device IDs in the structure returned by +.BR stat (2). +.SH ATTRIBUTES +For an explanation of the terms used in this section, see +.BR attributes (7). +.TS +allbox; +lbx lb lb +l l l. +Interface Attribute Value +T{ +.na +.nh +.BR makedev (), +.BR major (), +.BR minor () +T} Thread safety MT-Safe +.TE +.SH VERSIONS +The BSDs expose the definitions for these macros via +.IR <sys/types.h> . +.SH STANDARDS +None. +.SH HISTORY +BSD, HP-UX, Solaris, AIX, Irix. +.\" The header location is inconsistent: +.\" Could be sys/mkdev.h, sys/sysmacros.h, or sys/types.h. +.P +These interfaces are defined as macros. +Since glibc 2.3.3, +they have been aliases for three GNU-specific functions: +.BR gnu_dev_makedev (), +.BR gnu_dev_major (), +and +.BR gnu_dev_minor (). +The latter names are exported, but the traditional names are more portable. +.P +Depending on the version, +glibc also exposes definitions for these macros from +.I <sys/types.h> +if suitable feature test macros are defined. +However, this behavior was deprecated in glibc 2.25, +.\" glibc commit dbab6577c6684c62bd2521c1c29dc25c3cac966f +and since glibc 2.28, +.\" glibc commit e16deca62e16f645213dffd4ecd1153c37765f17 +.I <sys/types.h> +no longer provides these definitions. +.SH SEE ALSO +.BR mknod (2), +.BR stat (2) |