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mdoc(7) police: tidy up.

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ru 2002-01-10 17:49:57 +00:00
parent 812ff7ad3b
commit cbb72c9e42
1 changed files with 25 additions and 17 deletions
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42
libexec/rtld-elf/rtld.1
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@ -39,7 +39,8 @@
.Nm
is a self-contained shared object providing run-time
support for loading and link-editing shared objects into a process'
address space. It is also commonly known as the dynamic linker.
address space.
It is also commonly known as the dynamic linker.
It uses the data structures
contained within dynamically linked programs to determine which shared
libraries are needed and loads them using the
@ -49,15 +50,18 @@ system call.
After all shared libraries have been successfully loaded,
.Nm
proceeds to resolve external references from both the main program and
all objects loaded. A mechanism is provided for initialization routines
all objects loaded.
A mechanism is provided for initialization routines
to be called on a per-object basis, giving a shared object an opportunity
to perform any extra set-up before execution of the program proper begins.
This is useful for C++ libraries that contain static constructors.
.Pp
.Nm
itself is loaded by the kernel together with any dynamically-linked
program that is to be executed. The kernel transfers control to the
dynamic linker. After the dynamic linker has finished loading,
program that is to be executed.
The kernel transfers control to the
dynamic linker.
After the dynamic linker has finished loading,
relocating, and initializing the program and its required shared
objects, it transfers control to the entry point of the program.
.Pp
@ -73,7 +77,7 @@ utility.
recognizes a number of environment variables that can be used to modify
its behaviour as follows:
.Pp
.Bl -tag -width LD_LIBRARY_PATH
.Bl -tag -width ".Ev LD_LIBRARY_PATH"
.It Ev LD_LIBRARY_PATH
A colon separated list of directories, overriding the default search path
for shared libraries.
@ -81,15 +85,19 @@ This is ignored for set-user-ID and set-group-ID programs.
.It Ev LD_PRELOAD
A list of shared libraries, separated by colons and/or white space,
to be linked in before any
other shared libraries. If the directory is not specified then
the directories specified by LD_LIBRARY_PATH will be searched first
other shared libraries.
If the directory is not specified then
the directories specified by
.Ev LD_LIBRARY_PATH
will be searched first
followed by the set of built-in standard directories.
This is ignored for set-user-ID and set-group-ID programs.
.It Ev LD_BIND_NOW
When set to a nonempty string, causes
.Nm
to relocate all external function calls before starting execution of the
program. Normally, function calls are bound lazily, at the first call
program.
Normally, function calls are bound lazily, at the first call
of each function.
.Ev LD_BIND_NOW
increases the start-up time of a program, but it avoids run-time
@ -110,30 +118,30 @@ option and allows
.Xr ldd 1
to be operated as a filter more conveniently.
The following conversions can be used:
.Bl -tag -width "xxxx"
.It \&%a
.Bl -tag -width 4n
.It Li %a
The main program's name
(also known as
.Dq __progname ) .
.It \&%A
.It Li \&%A
The value of the environment variable
.Ev LD_TRACE_LOADED_OBJECTS_PROGNAME
.It \&%o
.It Li %o
The library name.
.It \&%m
.It Li %m
The library's major version number.
.It \&%p
.It Li %p
The full pathname as determined by
.Nm rtld Ns 's
library search rules.
.It \&%x
.It Li %x
The library's load address.
.El
.Pp
Additionally,
.Sy \en
.Ql \en
and
.Sy \et
.Ql \et
are recognized and have their usual meaning.
.El
.Sh FILES