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From 7f1fd10cfebd5ea2f3e1938abe1bd1c4828164a7 Mon Sep 17 00:00:00 2001
From: Fabio Berton <fabio.berton@ossystems.com.br>
Date: Fri, 9 Sep 2016 16:00:42 -0300
Subject: [PATCH] handle read-only files
Patch from:
https://github.com/darealshinji/patchelf/commit/40e66392bc4b96e9b4eda496827d26348a503509
Upstream-Status: Denied [https://github.com/NixOS/patchelf/pull/89]
Signed-off-by: Fabio Berton <fabio.berton@ossystems.com.br>
---
src/patchelf.cc | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/src/patchelf.cc b/src/patchelf.cc
index 0b4965adff83..b5db2aef0e8a 100644
--- a/src/patchelf.cc
+++ b/src/patchelf.cc
@@ -497,7 +497,17 @@ void ElfFile<ElfFileParamNames>::sortShdrs()
static void writeFile(std::string fileName, FileContents contents)
{
- int fd = open(fileName.c_str(), O_TRUNC | O_WRONLY);
+ struct stat st;
+ int fd;
+
+ if (stat(fileName.c_str(), &st) != 0)
+ error("stat");
+
+ if (chmod(fileName.c_str(), 0600) != 0)
+ error("chmod");
+
+ fd = open(fileName.c_str(), O_TRUNC | O_WRONLY);
+
if (fd == -1)
error("open");
@@ -511,6 +521,10 @@ static void writeFile(std::string fileName, FileContents contents)
if (close(fd) != 0)
error("close");
+
+ if (chmod(fileName.c_str(), st.st_mode) != 0)
+ error("chmod");
+
}
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