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From 682fb48c137b687477008b68863c2a0b73ed47d1 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(-)
Index: git/src/patchelf.cc
===================================================================
--- git.orig/src/patchelf.cc
+++ git/src/patchelf.cc
@@ -534,9 +534,19 @@ void ElfFile<ElfFileParamNames>::sortShd
static void writeFile(const std::string & fileName, const FileContents & contents)
{
+ struct stat st;
+ int fd;
+
debug("writing %s\n", fileName.c_str());
- int fd = open(fileName.c_str(), O_CREAT | O_TRUNC | O_WRONLY, 0777);
+ if (stat(fileName.c_str(), &st) != 0)
+ error("stat");
+
+ if (chmod(fileName.c_str(), 0600) != 0)
+ error("chmod");
+
+ fd = open(fileName.c_str(), O_CREAT | O_TRUNC | O_WRONLY, 0777);
+
if (fd == -1)
error("open");
@@ -551,8 +561,6 @@ static void writeFile(const std::string
bytesWritten += portion;
}
- if (close(fd) >= 0)
- return;
/*
* Just ignore EINTR; a retry loop is the wrong thing to do.
*
@@ -561,9 +569,11 @@ static void writeFile(const std::string
* http://utcc.utoronto.ca/~cks/space/blog/unix/CloseEINTR
* https://sites.google.com/site/michaelsafyan/software-engineering/checkforeintrwheninvokingclosethinkagain
*/
- if (errno == EINTR)
- return;
- error("close");
+ if ((close(fd) < 0) && errno != EINTR)
+ error("close");
+
+ if (chmod(fileName.c_str(), st.st_mode) != 0)
+ error("chmod");
}
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