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| author | Siddhesh Poyarekar <siddhesh@redhat.com> | 2012-04-04 20:09:09 +0530 |
|---|---|---|
| committer | Siddhesh Poyarekar <siddhesh@redhat.com> | 2012-04-11 00:13:52 +0530 |
| commit | 73d65cc3784b1413b017fed31550ec11e717e45b (patch) | |
| tree | 25c26d43b59d5f65bd15381a05a7566cb5ee90b7 /elf/rtld.c | |
| parent | d715c9144bdf32211cd512530d2240dc28648435 (diff) | |
| download | glibc-73d65cc3784b1413b017fed31550ec11e717e45b.tar.gz glibc-73d65cc3784b1413b017fed31550ec11e717e45b.tar.xz glibc-73d65cc3784b1413b017fed31550ec11e717e45b.zip | |
New ld.so argument --inhibit-ldcache to disable ld.so.cache lookup
It may sometimes be desirable to make the dynamic linker only pick up libraries from the library path and rpath and not look at the ld.so.cache that ldconfig generates. An example of such a use case is the glibc testsuite where the dynamic linker must not be influenced by any external paths or caches. This change adds a new option --inhibit-ldcache that when used, tells the dynamic linker to not use ld.so.cache even if it is available.
Diffstat (limited to 'elf/rtld.c')
| -rw-r--r-- | elf/rtld.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/elf/rtld.c b/elf/rtld.c index 0362b14968..88a340d1ee 100644 --- a/elf/rtld.c +++ b/elf/rtld.c @@ -161,6 +161,7 @@ struct rtld_global_ro _rtld_global_ro attribute_relro = ._dl_fpu_control = _FPU_DEFAULT, ._dl_pointer_guard = 1, ._dl_pagesize = EXEC_PAGESIZE, + ._dl_inhibit_cache = 0, /* Function pointers. */ ._dl_debug_printf = _dl_debug_printf, @@ -973,6 +974,13 @@ dl_main (const ElfW(Phdr) *phdr, --_dl_argc; ++INTUSE(_dl_argv); } + else if (! strcmp (INTUSE(_dl_argv)[1], "--inhibit-cache")) + { + GLRO(dl_inhibit_cache) = 1; + ++_dl_skip_args; + --_dl_argc; + ++INTUSE(_dl_argv); + } else if (! strcmp (INTUSE(_dl_argv)[1], "--library-path") && _dl_argc > 2) { @@ -1022,6 +1030,7 @@ of this helper program; chances are you did not intend to run this program.\n\ --list list all dependencies and how they are resolved\n\ --verify verify that given object really is a dynamically linked\n\ object we can handle\n\ + --inhibit-cache Do not use " LD_SO_CACHE "\n\ --library-path PATH use given PATH instead of content of the environment\n\ variable LD_LIBRARY_PATH\n\ --inhibit-rpath LIST ignore RUNPATH and RPATH information in object names\n\ |