diff options
Diffstat (limited to 'libexec/rtld-elf/rtld.1')
| -rw-r--r-- | libexec/rtld-elf/rtld.1 | 53 |
1 files changed, 46 insertions, 7 deletions
diff --git a/libexec/rtld-elf/rtld.1 b/libexec/rtld-elf/rtld.1 index f77b150..703a462 100644 --- a/libexec/rtld-elf/rtld.1 +++ b/libexec/rtld-elf/rtld.1 @@ -28,7 +28,7 @@ .\" .\" $FreeBSD$ .\" -.Dd April 1, 2009 +.Dd June 28, 2012 .Dt RTLD 1 .Os .Sh NAME @@ -86,14 +86,39 @@ 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. +The following search order is used to locate required shared objects: .Pp -To locate the required shared objects in the file system, -.Nm -may use a -.Dq hints -file prepared by the +.Bl -enum -offset indent -compact +.It +.Dv DT_RPATH +of the referencing object unless that object also contains a +.Dv DT_RUNPATH +tag +.It +.Dv DT_RPATH +of the program unless the referencing object contains a +.Dv DT_RUNPATH +tag +.It +Path indicated by +.Ev LD_LIBRARY_PATH +environment variable +.It +.Dv DT_RUNPATH +of the referencing object +.It +Hints file produced by the .Xr ldconfig 8 -utility. +utility +.It +The +.Pa /lib +and +.Pa /usr/lib +directories, unless the referencing object was linked using the +.Dq Fl z Ar nodefaultlib +option +.El .Pp The .Nm @@ -143,6 +168,20 @@ This variable is unset for set-user-ID and set-group-ID programs. A colon separated list of directories, overriding the default search path for shared libraries. This variable is unset for set-user-ID and set-group-ID programs. +.It Ev LD_LIBRARY_PATH_RPATH +If the variable is specified and has a value starting with +any of \'y\', \'Y\' or \'1\' symbols, the path specified by +.Ev LD_LIBRARY_PATH +variable is allowed to override the path from +.Dv DT_RPATH +for binaries which does not contain +.Dv DT_RUNPATH +tag. +For such binaries, when the variable +.Ev LD_LIBRARY_PATH_RPATH +is set, +.Dq Fl z Ar nodefaultlib +link-time option is ignored as well. .It Ev LD_PRELOAD A list of shared libraries, separated by colons and/or white space, to be linked in before any |
