glibc/glibc-rh1817513-94.patch

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commit 542923d949e8b2480e48bd85fea13cf5d00d30b7
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Oct 8 15:33:00 2020 +0200
elf: Implement ld.so --version
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).
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
diff --git a/elf/dl-main.h b/elf/dl-main.h
index ac7249a580214860..b51256d3b48230b0 100644
--- a/elf/dl-main.h
+++ b/elf/dl-main.h
@@ -105,6 +105,9 @@ call_init_paths (const struct dl_main_state *state)
_Noreturn void _dl_usage (const char *argv0, const char *wrong_option)
attribute_hidden;
+/* Print ld.so version information and exit. */
+_Noreturn void _dl_version (void) attribute_hidden;
+
/* Print ld.so --help output and exit. */
_Noreturn void _dl_help (const char *argv0, struct dl_main_state *state)
attribute_hidden;
diff --git a/elf/dl-usage.c b/elf/dl-usage.c
index c1820dca2fa117ee..f3c5ac76d37f9c03 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 (EXIT_FAILURE);
}
+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 (EXIT_SUCCESS);
+}
+
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 (EXIT_SUCCESS);
diff --git a/elf/rtld.c b/elf/rtld.c
index b92641cb1c2d99a6..da1eef108508b95f 100644
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -1248,6 +1248,8 @@ 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')