mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-21 20:40:05 +00:00
elf: Move ld.so error/help output to _dl_usage
Also add a comment to elf/Makefile, explaining why we cannot use config.status for autoconf template processing. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This commit is contained in:
Florian Weimer
parent
2bf9e641fd
commit
9590a71adc
@ -59,7 +59,7 @@ elide-routines.os = $(all-dl-routines) dl-support enbl-secure dl-origin \
|
||||
# ld.so uses those routines, plus some special stuff for being the program
|
||||
# interpreter and operating independent of libc.
|
||||
rtld-routines = rtld $(all-dl-routines) dl-sysdep dl-environ dl-minimal \
|
||||
dl-error-minimal dl-conflict dl-hwcaps
|
||||
dl-error-minimal dl-conflict dl-hwcaps dl-usage
|
||||
all-rtld-routines = $(rtld-routines) $(sysdep-rtld-routines)
|
||||
|
||||
CFLAGS-dl-runtime.c += -fexceptions -fasynchronous-unwind-tables
|
||||
@ -618,6 +618,12 @@ ldso_install: $(inst_rtlddir)/$(rtld-installed-name)
|
||||
endif
|
||||
|
||||
|
||||
# Workarounds for ${exec_prefix} expansion in configure variables.
|
||||
# config.status cannot be used directly for processing ldd.bash.in or
|
||||
# expanding variables such as sysconfdir because the expansion
|
||||
# contains the literal string ${exec_prefix}, which is not valid in C
|
||||
# headers or installed shell scripts.
|
||||
|
||||
ldd-rewrite = -e 's%@RTLD@%$(rtlddir)/$(rtld-installed-name)%g' \
|
||||
-e 's%@VERSION@%$(version)%g' \
|
||||
-e 's|@PKGVERSION@|$(PKGVERSION)|g' \
|
||||
@ -655,6 +661,7 @@ libof-ldconfig = ldconfig
|
||||
CFLAGS-dl-cache.c += $(SYSCONF-FLAGS)
|
||||
CFLAGS-cache.c += $(SYSCONF-FLAGS)
|
||||
CFLAGS-rtld.c += $(SYSCONF-FLAGS)
|
||||
CFLAGS-dl-usage.c += $(SYSCONF-FLAGS)
|
||||
|
||||
cpp-srcs-left := $(all-rtld-routines:=.os)
|
||||
lib := rtld
|
||||
|
||||
@ -19,7 +19,9 @@
|
||||
#ifndef _DL_MAIN
|
||||
#define _DL_MAIN
|
||||
|
||||
#include <ldsodefs.h>
|
||||
#include <limits.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
/* Length limits for names and paths, to protect the dynamic linker,
|
||||
particularly when __libc_enable_secure is active. */
|
||||
@ -95,4 +97,7 @@ call_init_paths (const struct dl_main_state *state)
|
||||
_dl_init_paths (state->library_path);
|
||||
}
|
||||
|
||||
/* Print ld.so usage information and exit. */
|
||||
_Noreturn void _dl_usage (void) attribute_hidden;
|
||||
|
||||
#endif /* _DL_MAIN */
|
||||
|
||||
51
elf/dl-usage.c
Normal file
51
elf/dl-usage.c
Normal file
@ -0,0 +1,51 @@
|
||||
/* Print usage information and help for ld.so.
|
||||
Copyright (C) 1995-2020 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<https://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <dl-cache.h>
|
||||
#include <dl-main.h>
|
||||
#include <ldsodefs.h>
|
||||
|
||||
void
|
||||
_dl_usage (void)
|
||||
{
|
||||
_dl_fatal_printf ("\
|
||||
Usage: ld.so [OPTION]... EXECUTABLE-FILE [ARGS-FOR-PROGRAM...]\n\
|
||||
You have invoked `ld.so', the helper program for shared library executables.\n\
|
||||
This program usually lives in the file `/lib/ld.so', and special directives\n\
|
||||
in executable files using ELF shared libraries tell the system's program\n\
|
||||
loader to load the helper program from this file. This helper program loads\n\
|
||||
the shared libraries needed by the program executable, prepares the program\n\
|
||||
to run, and runs it. You may invoke this helper program directly from the\n\
|
||||
command line to load and run an ELF executable file; this is like executing\n\
|
||||
that file itself, but always uses this helper program from the file you\n\
|
||||
specified, instead of the helper program file specified in the executable\n\
|
||||
file you run. This is mostly of use for maintainers to test new versions\n\
|
||||
of this helper program; chances are you did not intend to run this program.\n\
|
||||
\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\
|
||||
in LIST\n\
|
||||
--audit LIST use objects named in LIST as auditors\n\
|
||||
--preload LIST preload objects named in LIST\n\
|
||||
--argv0 STRING set argv[0] to STRING before running\n");
|
||||
}
|
||||
26
elf/rtld.c
26
elf/rtld.c
@ -1246,31 +1246,7 @@ dl_main (const ElfW(Phdr) *phdr,
|
||||
/* If we have no further argument the program was called incorrectly.
|
||||
Grant the user some education. */
|
||||
if (_dl_argc < 2)
|
||||
_dl_fatal_printf ("\
|
||||
Usage: ld.so [OPTION]... EXECUTABLE-FILE [ARGS-FOR-PROGRAM...]\n\
|
||||
You have invoked `ld.so', the helper program for shared library executables.\n\
|
||||
This program usually lives in the file `/lib/ld.so', and special directives\n\
|
||||
in executable files using ELF shared libraries tell the system's program\n\
|
||||
loader to load the helper program from this file. This helper program loads\n\
|
||||
the shared libraries needed by the program executable, prepares the program\n\
|
||||
to run, and runs it. You may invoke this helper program directly from the\n\
|
||||
command line to load and run an ELF executable file; this is like executing\n\
|
||||
that file itself, but always uses this helper program from the file you\n\
|
||||
specified, instead of the helper program file specified in the executable\n\
|
||||
file you run. This is mostly of use for maintainers to test new versions\n\
|
||||
of this helper program; chances are you did not intend to run this program.\n\
|
||||
\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\
|
||||
in LIST\n\
|
||||
--audit LIST use objects named in LIST as auditors\n\
|
||||
--preload LIST preload objects named in LIST\n\
|
||||
--argv0 STRING set argv[0] to STRING before running\n");
|
||||
_dl_usage ();
|
||||
|
||||
++_dl_skip_args;
|
||||
--_dl_argc;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user