From: Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org>
Date: Tue, 28 Sep 2021 10:41:26 +0000 (+0930)
Subject: PR28391, strip/objcopy --preserve-dates *.a: cannot set time
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=0d62064867c74286360e821b75ef6799bedc4b34;p=binutils-gdb.git

PR28391, strip/objcopy --preserve-dates *.a: cannot set time

After commit 985e0264516 copy_archive function began to pass invalid
values to the utimensat(2) function when it tries to preserve
timestamps in ar archives.  This happens because the bfd_stat_arch_elt
implementation for ar archives fills only the st_mtim.tv_sec part of
the st_mtim timespec structure, but leaves the st_mtim.tv_nsec part
and the whole st_atim timespec untouched leaving them uninitialized

	PR 28391
	* ar.c (extract_file): Clear buf for preserve_dates.
	* objcopy.c (copy_archive): Likewise.
---

diff --git a/binutils/ar.c b/binutils/ar.c
index 5d6976c7027..8885585ef75 100644
--- a/binutils/ar.c
+++ b/binutils/ar.c
@@ -1180,6 +1180,9 @@ extract_file (bfd *abfd)
   bfd_size_type size;
   struct stat buf;
 
+  if (preserve_dates)
+    memset (&buf, 0, sizeof (buf));
+
   if (bfd_stat_arch_elt (abfd, &buf) != 0)
     /* xgettext:c-format */
     fatal (_("internal stat error on %s"), bfd_get_filename (abfd));
diff --git a/binutils/objcopy.c b/binutils/objcopy.c
index a6c2e0dcc26..fd7557fe433 100644
--- a/binutils/objcopy.c
+++ b/binutils/objcopy.c
@@ -3600,6 +3600,7 @@ copy_archive (bfd *ibfd, bfd *obfd, const char *output_target,
 
       if (preserve_dates)
 	{
+	  memset (&buf, 0, sizeof (buf));
 	  stat_status = bfd_stat_arch_elt (this_element, &buf);
 
 	  if (stat_status != 0)