mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: Masahiro Yamada <masahiroy@kernel.org>
To: linux-kbuild@vger.kernel.org
Cc: Masahiro Yamada <masahiroy@kernel.org>,
	Michal Marek <michal.lkml@markovi.net>,
	linux-kernel@vger.kernel.org
Subject: [PATCH 2/2] modpost: refactor sech_name()
Date: Mon, 25 May 2020 14:47:05 +0900	[thread overview]
Message-ID: <20200525054705.1066033-2-masahiroy@kernel.org> (raw)
In-Reply-To: <20200525054705.1066033-1-masahiroy@kernel.org>

Use sym_get_data_offset() helper to get access to the .shstrtab
section data. No functional change is intended because
elf->sechdrs[elf->secindex_strings].sh_addr is 0 for both ET_REL
and ET_EXEC object types.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 scripts/mod/modpost.c | 22 ++++++++++------------
 1 file changed, 10 insertions(+), 12 deletions(-)

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index a8306adb3554..a5f3908bc9e4 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -333,18 +333,6 @@ static enum export export_no(const char *s)
 	return export_unknown;
 }
 
-static const char *sech_name(struct elf_info *elf, Elf_Shdr *sechdr)
-{
-	return (void *)elf->hdr +
-		elf->sechdrs[elf->secindex_strings].sh_offset +
-		sechdr->sh_name;
-}
-
-static const char *sec_name(struct elf_info *elf, int secindex)
-{
-	return sech_name(elf, &elf->sechdrs[secindex]);
-}
-
 static void *sym_get_data_offset(const struct elf_info *info,
 				 unsigned int secindex, unsigned long offset)
 {
@@ -362,6 +350,16 @@ static void *sym_get_data(const struct elf_info *info, const Elf_Sym *sym)
 				   sym->st_value);
 }
 
+static const char *sech_name(struct elf_info *elf, Elf_Shdr *sechdr)
+{
+	return sym_get_data_offset(elf, elf->secindex_strings, sechdr->sh_name);
+}
+
+static const char *sec_name(struct elf_info *elf, int secindex)
+{
+	return sech_name(elf, &elf->sechdrs[secindex]);
+}
+
 #define strstarts(str, prefix) (strncmp(str, prefix, strlen(prefix)) == 0)
 
 static enum export export_from_secname(struct elf_info *elf, unsigned int sec)
-- 
2.25.1


      reply	other threads:[~2020-05-25  5:47 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-25  5:47 [PATCH 1/2] modpost: fix potential segmentation fault for addend_i386_rel() Masahiro Yamada
2020-05-25  5:47 ` Masahiro Yamada [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200525054705.1066033-2-masahiroy@kernel.org \
    --to=masahiroy@kernel.org \
    --cc=linux-kbuild@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=michal.lkml@markovi.net \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox

Powered by JetHome