1 .\" Copyright (c) 2003 Matthew N. Dodd <winter@jurai.net>
2 .\" Copyright (c) 2013 Dag-Erling Smørgrav
3 .\" All rights reserved.
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26 .\" $FreeBSD: head/share/man/man5/libmap.conf.5 255765 2013-09-21 21:03:52Z des $
28 .Dd September 16, 2013
33 .Nd "configuration file for dynamic object dependency mapping"
39 allows dynamic object dependencies to be mapped to arbitrary names.
43 can have one of five forms:
44 .Bl -tag -width indent
45 .It Ar origin Ar target
46 Whenever a dependency on
48 is encountered while loading a dynamic object, use
50 instead of searching for
52 in the normal library search paths.
54 When iterating through a library search path, replace any element that
62 to all subsequent mappings until the next constraint line or the end
67 .It Cm include Ar file
70 before continuing with the current file.
71 Nesting depth is limited only by available memory, but each file
72 encountered is processed only once, and loops are silently ignored.
73 .It Cm includedir Ar dir
76 and parse the contents of any file that ends in
78 before continuing with the current file.
79 Nesting depth is limited only by available memory, but each directory
80 or file encountered is processed only once, and loops are silently
84 Constrained mappings only apply when processing binaries or libraries
85 that satisfy the constraint.
86 There are three types of constraints:
87 .Bl -tag -width indent
89 The constraint is matched literally so that only an executable with an
90 identical fully qualified pathname will satisfy the constraint.
91 This means that the executable
93 will not satisfy the constraint
94 .Bq Pa /usr/bin/./foo ,
96 This is the default constraint type.
98 A constraint with no path is matched against the basename of the
100 For instance, the constraint
104 .Pa /usr/local/sbin/foo ,
105 or any other executable named
107 no matter what directory it is in.
109 A constraint with a trailing slash is satisfied if the full pathname
110 begins with the constraint string.
111 For instance, the constraint
113 will match any executable with a path starting with
117 Note that the constraints are matched against the path that was passed
118 as the first argument to whichever
120 function was used to execute the binary in question.
121 Most programs executed from a shell are run without a full path, via
123 or similar, so the basename constraint type is the most useful.
127 Constraints apply to all mappings until the next constraint or the end
129 Hence, unconstrained mappings must be placed at the top of the file.
132 .Bl -tag -width ".Pa /etc/libmap.conf" -compact
133 .It Pa /etc/libmap.conf
134 The libmap configuration file.
141 libc_r.so.6 libpthread.so.2 # Everything that uses 'libc_r'
142 libc_r.so libpthread.so # now uses 'libpthread'
144 [/tmp/mplayer] # Test version of mplayer uses libc_r
145 libpthread.so.2 libc_r.so.6
146 libpthread.so libc_r.so
148 [/usr/local/jdk1.4.1/] # All Java 1.4.1 programs use libthr
149 # This works because "javavms" executes
150 # programs with the full pathname
151 libpthread.so.2 libthr.so.2
152 libpthread.so libthr.so
154 # Glue for Linux-only EPSON printer .so to be loaded into cups, etc.
155 [/usr/local/lib/pips/libsc80c.so]
156 libc.so.6 pluginwrapper/pips.so
157 libdl.so.2 pluginwrapper/pips.so
165 mechanism first appeared in
168 This manual page was written by
169 .An Matthew N. Dodd Aq Mt winter@jurai.net
170 and extensively rewritten by
171 .An Dag-Erling Sm\(/orgrav Aq Mt des@FreeBSD.org .