From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
To: libc-alpha@sourceware.org
Subject: Re: [PATCH 08/28] elf: Implement ld.so --version
Date: Wed, 7 Oct 2020 15:36:00 -0300 [thread overview]
Message-ID: <0622aa62-11bd-eff2-3966-e7753a5f04f0@linaro.org> (raw)
In-Reply-To: <7333a9c583135f6660716d67c05da78a65df0aea.1601569371.git.fweimer@redhat.com>
On 01/10/2020 13:32, Florian Weimer via Libc-alpha wrote:
> This prints out version information for the dynamic loader and
> exits immediately, without further command line processing
> (which seems to match what some GNU tools do).
Some comments below.
> ---
> elf/dl-main.h | 3 +++
> elf/dl-usage.c | 15 +++++++++++++++
> elf/rtld.c | 2 ++
> 3 files changed, 20 insertions(+)
>
> diff --git a/elf/dl-main.h b/elf/dl-main.h
> index 71ca5114de..0df849d3cd 100644
> --- a/elf/dl-main.h
> +++ b/elf/dl-main.h
> @@ -101,6 +101,9 @@ call_init_paths (const struct dl_main_state *state)
> void _dl_usage (const char *argv0, const char *wrong_option)
> attribute_hidden __attribute__ ((__noreturn__));
>
> +/* Print ld.so version information and exit. */
> +void _dl_version (void) attribute_hidden __attribute__ ((__noreturn__));
> +
Maybe _Noreturn here?
> /* Print ld.so --help output and exit. */
> void _dl_help (const char *argv0, struct dl_main_state *state)
> attribute_hidden __attribute__ ((__noreturn__));
> diff --git a/elf/dl-usage.c b/elf/dl-usage.c
> index 72ff99e70f..7355b094a5 100644
> --- a/elf/dl-usage.c
> +++ b/elf/dl-usage.c
> @@ -20,6 +20,7 @@
> #include <dl-main.h>
> #include <ldsodefs.h>
> #include <unistd.h>
> +#include "version.h"
>
> void
> _dl_usage (const char *argv0, const char *wrong_option)
> @@ -32,6 +33,19 @@ _dl_usage (const char *argv0, const char *wrong_option)
> _exit (1);
> }
>
> +void
> +_dl_version (void)
> +{
> + _dl_printf ("\
> +ld.so " PKGVERSION RELEASE " release version " VERSION ".\n\
> +Copyright (C) 2020 Free Software Foundation, Inc.\n\
> +This is free software; see the source for copying conditions.\n\
> +There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A\n\
> +PARTICULAR PURPOSE.\n\
> +");
> + _exit (0);
> +}
> +
I think we will need a way to embedded the Copyright year using a macro
to avoid need to manually update it on each year.
> void
> _dl_help (const char *argv0, struct dl_main_state *state)
> {
> @@ -61,6 +75,7 @@ of this helper program; chances are you did not intend to run this program.\n\
> --preload LIST preload objects named in LIST\n\
> --argv0 STRING set argv[0] to STRING before running\n\
> --help display this help and exit\n\
> + --version output version information and exit\n\
> ",
> argv0);
> _exit (0);
> diff --git a/elf/rtld.c b/elf/rtld.c
> index 5cdab3c99c..e0e8e98c2f 100644
> --- a/elf/rtld.c
> +++ b/elf/rtld.c
> @@ -1254,6 +1254,8 @@ dl_main (const ElfW(Phdr) *phdr,
> --_dl_argc;
> ++_dl_argv;
> }
> + else if (strcmp (_dl_argv[1], "--version") == 0)
> + _dl_version ();
> else if (_dl_argv[1][0] == '-' && _dl_argv[1][1] == '-')
> {
> if (_dl_argv[1][1] == '\0')
>
Ok.
next prev parent reply other threads:[~2020-10-07 18:36 UTC|newest]
Thread overview: 103+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-01 16:31 [PATCH 00/28] glibc-hwcaps support Florian Weimer
2020-10-01 16:31 ` [PATCH 01/28] elf: Do not search HWCAP subdirectories in statically linked binaries Florian Weimer
2020-10-01 18:22 ` Adhemerval Zanella
2020-10-01 18:24 ` Carlos O'Donell
2020-10-01 18:29 ` Adhemerval Zanella
2020-10-01 20:24 ` Carlos O'Donell
2020-10-01 16:31 ` [PATCH 02/28] elf: Implement __rtld_malloc_is_full Florian Weimer
2020-10-01 18:23 ` Adhemerval Zanella
2020-10-08 9:44 ` Florian Weimer
2020-10-01 16:31 ` [PATCH 03/28] elf: Implement _dl_write Florian Weimer
2020-10-05 19:46 ` Adhemerval Zanella
2020-10-01 16:31 ` [PATCH 04/28] elf: Extract command-line/environment variables state from rtld.c Florian Weimer
2020-10-06 20:45 ` Adhemerval Zanella
2020-10-08 11:32 ` Florian Weimer
2020-10-01 16:32 ` [PATCH 05/28] elf: Move ld.so error/help output to _dl_usage Florian Weimer
2020-10-06 21:06 ` Adhemerval Zanella
2020-10-08 12:19 ` Florian Weimer
2020-10-01 16:32 ` [PATCH 06/28] elf: Record whether paths come from LD_LIBRARY_PATH or --library-path Florian Weimer
2020-10-07 16:39 ` Adhemerval Zanella
2020-10-07 16:49 ` Florian Weimer
2020-10-01 16:32 ` [PATCH 07/28] elf: Implement ld.so --help Florian Weimer
2020-10-07 17:16 ` Adhemerval Zanella
2020-10-08 13:13 ` Florian Weimer
2020-10-01 16:32 ` [PATCH 08/28] elf: Implement ld.so --version Florian Weimer
2020-10-07 18:36 ` Adhemerval Zanella [this message]
2020-10-07 18:38 ` Adhemerval Zanella
2020-10-08 13:37 ` Florian Weimer
2020-10-01 16:32 ` [PATCH 09/28] scripts/update-copyrights: Update csu/version.c, elf/dl-usage.c Florian Weimer
2020-10-07 18:41 ` Adhemerval Zanella
2020-10-01 16:32 ` [PATCH 10/28] elf: Use the term "program interpreter" in the ld.so help message Florian Weimer
2020-10-07 21:08 ` Adhemerval Zanella
2020-10-08 14:08 ` Florian Weimer
2020-10-01 16:32 ` [PATCH 11/28] elf: Print the full name of the dynamic loader " Florian Weimer
2020-10-08 12:38 ` Adhemerval Zanella
2020-10-01 16:32 ` [PATCH 12/28] elf: Make __rtld_env_path_list and __rtld_search_dirs global variables Florian Weimer
2020-10-08 13:27 ` Adhemerval Zanella
2020-10-01 16:32 ` [PATCH 13/28] elf: Add library search path information to ld.so --help Florian Weimer
2020-10-08 16:22 ` Adhemerval Zanella
2020-10-01 16:33 ` [PATCH 14/28] elf: Enhance ld.so --help to print HWCAP subdirectories Florian Weimer
2020-10-08 16:27 ` Adhemerval Zanella
2020-10-09 8:18 ` Florian Weimer
2020-10-09 13:49 ` Matheus Castanho
2020-10-09 17:08 ` Florian Weimer
2020-10-09 17:12 ` Florian Weimer
2020-10-09 18:54 ` Matheus Castanho
2020-10-12 9:47 ` Florian Weimer
2020-10-01 16:33 ` [PATCH 15/28] elf: Do not pass GLRO(dl_platform), GLRO(dl_platformlen) to _dl_important_hwcaps Florian Weimer
2020-10-08 18:04 ` Adhemerval Zanella
2020-10-01 16:33 ` [PATCH 16/28] elf: Add glibc-hwcaps support for LD_LIBRARY_PATH Florian Weimer
2020-10-08 10:13 ` Szabolcs Nagy
2020-10-09 9:08 ` Florian Weimer
2020-10-09 10:50 ` Szabolcs Nagy
2020-10-09 10:55 ` Florian Weimer
2020-10-09 11:03 ` Szabolcs Nagy
2020-10-08 23:16 ` Paul A. Clarke
2020-10-09 8:56 ` Florian Weimer
2020-10-09 13:19 ` Adhemerval Zanella
2020-10-12 11:54 ` Florian Weimer
2020-10-01 16:33 ` [PATCH 17/28] x86_64: Add glibc-hwcaps support Florian Weimer
2020-10-01 16:33 ` [PATCH 18/28] powerpc64le: " Florian Weimer
2020-10-01 18:56 ` Paul A. Clarke
2020-10-05 9:47 ` Florian Weimer
2020-10-05 19:15 ` Paul A. Clarke
2020-10-06 12:20 ` Florian Weimer
2020-10-06 17:45 ` Paul A. Clarke
2020-10-09 9:06 ` Florian Weimer
2020-10-01 16:33 ` [PATCH 19/28] s390x: Add " Florian Weimer
2020-10-01 16:33 ` [PATCH 20/28] aarch64: " Florian Weimer
2020-10-14 13:46 ` Adhemerval Zanella
2020-10-14 14:08 ` Florian Weimer
2020-10-14 14:15 ` Adhemerval Zanella
2020-10-14 14:37 ` Szabolcs Nagy
2020-10-14 14:43 ` Adhemerval Zanella
2020-10-14 15:13 ` Florian Weimer
2020-10-14 14:44 ` Florian Weimer
2020-10-14 15:09 ` Szabolcs Nagy
2020-10-01 16:33 ` [PATCH 21/28] elf: Add endianness markup to ld.so.cache Florian Weimer
2020-10-14 14:07 ` Adhemerval Zanella
2020-10-01 16:33 ` [PATCH 22/28] elf: Add extension mechanism " Florian Weimer
2020-10-15 17:52 ` Adhemerval Zanella
2020-10-30 12:22 ` Florian Weimer
2020-11-03 12:45 ` Adhemerval Zanella
2020-11-03 15:30 ` Florian Weimer
2020-10-01 16:34 ` [PATCH 23/28] elf: Unify old and new format cache handling code in ld.so Florian Weimer
2020-10-16 14:37 ` Adhemerval Zanella
2020-10-30 13:22 ` Florian Weimer
2020-11-03 13:02 ` Adhemerval Zanella
2020-10-01 16:34 ` [PATCH 24/28] elf: Implement a string table for ldconfig, with tail merging Florian Weimer
2020-10-20 14:25 ` Adhemerval Zanella
2020-10-30 17:08 ` Florian Weimer
2020-11-03 13:05 ` Adhemerval Zanella
2020-11-03 15:29 ` Florian Weimer
2020-10-01 16:34 ` [PATCH 25/28] elf: Implement tail merging of strings in ldconfig Florian Weimer
2020-10-22 21:08 ` Adhemerval Zanella
2020-10-30 17:36 ` Florian Weimer
2020-10-01 16:34 ` [PATCH 26/28] elf: In ldconfig, extract the new_sub_entry function from search_dir Florian Weimer
2020-10-27 13:15 ` Adhemerval Zanella
2020-10-01 16:34 ` [PATCH 27/28] elf: Process glibc-hwcaps subdirectories in ldconfig Florian Weimer
2020-10-27 17:28 ` Adhemerval Zanella
2020-11-04 11:57 ` Florian Weimer
2020-10-01 16:34 ` [PATCH 28/28] elf: Add glibc-hwcaps subdirectory support to ld.so cache processing Florian Weimer
2020-10-01 16:50 ` [PATCH 00/28] glibc-hwcaps support H.J. Lu
2020-10-01 16:54 ` Florian Weimer
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