depmod.8

用于linux2.6内核支持模块的插入和卸载

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.TH "depmod" "8" 
.SH "NAME" 
depmod \(em program to generate \fBmodules.dep\fP and map files. 
.SH "SYNOPSIS" 
.PP 
\fBdepmod\fP [\fB-b \fIbasedir\fP\fP]  [\fB-e\fP]  [\fB-F \fISystem.map\fP\fP]  [\fB-n\fP]  [\fB-v\fP]  [\fB\fIversion\fP\fP]  [\fB-A\fP     ]  
.PP 
\fBdepmod\fP [\fB-e\fP]  [\fB-F\fISystem.map\fP\fP]  [\fB-n\fP]  [\fB-v\fP]  [\fB\fIversion\fP\fP]  [\fB\fIfilename\fP\fP \&...]  
.SH "DESCRIPTION" 
.PP 
Linux kernel modules can provide services (called "symbols") for 
other modules to use (using EXPORT_SYMBOL in the code).  If a 
second module uses this symbol, that second module clearly 
depends on the first module.  These dependencies can get quite 
complex. 
 
.PP 
\fBdepmod\fP creates a list of module dependencies, 
by reading each module under 
\fB/lib/modules/\fP\fIversion\fP  
and determining what symbols it exports, and what symbols it 
needs.  By default this list is written to 
\fBmodules.dep\fP in the same directory.  If 
filenames are given on the command line, only those modules are 
examined (which is rarely useful, unless all modules are 
listed). 
 
.PP 
If a \fIversion\fP is provided, then that 
kernel version's module directory is used, rather than the 
current kernel version (as returned by "uname -r"). 
 
.PP 
\fBdepmod\fP will also generate various map files 
in this directory, for use by the hotplug infrastructure. 
 
.SH "OPTIONS" 
.IP "\fB-b \fIbasedir\fP\fP \fB--basedir \fIbasedir\fP\fP 	  " 10 
If your modules are not currently in the (normal) 
directory 
\fB/lib/modules/\fP\fIversion\fP, 
but in a staging area, you can specify a 
\fIbasedir\fP which is prepended to 
the directory name.  This 
\fIbasedir\fP is stripped from the 
resulting \fBmodules.dep\fP file, so it 
is ready to be moved into the normal location. 
 
.IP "\fB-e\fP \fB--errsyms\fP         " 10 
When combined with the \fB-F\fP option, this 
reports any symbols which a module needs which are not 
supplied by other modules or the kernel.  Normally, any 
symbols not provided by modules are assumed to be 
provided by the kernel (which should be true in a 
perfect world). 
 
.IP "\fB-F\fP \fB--filesyms \fISystem.map\fP\fP         " 10 
Supplied with the \fBSystem.map\fP produced 
when the kernel was built, this allows the 
\fB-e\fP option to report unresolved symbols. 
 
.IP "\fB-n\fP \fB--dry-run\fP         " 10 
This sends the resulting modules.dep, then the various 
map files, to standard output, rather than writing them into 
the module directory. 
 
.IP "\fB-A\fP \fB--quick\fP         " 10 
This option scans to see if any modules are newer the 
\fBmodules.dep\fP file before any work is 
done: if not, it silently exits rather than regenerating 
the files. 
 
.SH "BACKWARDS COMPATIBILITY" 
.PP 
This version of \fBdepmod\fP is for kernels 
\fB2.5.48\fP and above.  If it detects a kernel 
with support for old-style modules, or the version specified is 
before \fB2.5.48\fP, it will attempt to run 
\fBdepmod.old\fP in its place, so it is completely 
transparent to the user. 
 
.SH "COPYRIGHT" 
.PP 
This manual page Copyright 2002, Rusty Russell, IBM Corporation. 
 
.SH "SEE ALSO" 
.PP 
\fBmodprobe\fP\fB(8)\fP, 
\fBmodules.dep\fP\fB(5)\fP, 
\fBdepmod.old\fP\fB(8)\fP      
...\" created by instant / docbook-to-man, Fri 15 Aug 2003, 23:44