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| author | Eelco Dolstra <e.dolstra@tudelft.nl> | 2012-02-15T00·31+0100 |
|---|---|---|
| committer | Eelco Dolstra <e.dolstra@tudelft.nl> | 2012-02-15T00·31+0100 |
| commit | bd013b6f987c23c3b99b639ba7cdbc7b694a13f5 (patch) | |
| tree | b1726c5b26371a9ee0666ab0b6aff9b1df5755c5 /src/libutil/Makefile.am | |
| parent | 5e57047d874e0f01dcb3bbc8b809fcc1aa82755b (diff) | |
On Linux, make the Nix store really read-only by using the immutable bit
I was bitten one time too many by Python modifying the Nix store by creating *.pyc files when run as root. On Linux, we can prevent this by setting the immutable bit on files and directories (as in ‘chattr +i’). This isn't supported by all filesystems, so it's not an error if setting the bit fails. The immutable bit is cleared by the garbage collector before deleting a path. The only tricky aspect is in optimiseStore(), since it's forbidden to create hard links to an immutable file. Thus optimiseStore() temporarily clears the immutable bit before creating the link.
Diffstat (limited to 'src/libutil/Makefile.am')
| -rw-r--r-- | src/libutil/Makefile.am | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/libutil/Makefile.am b/src/libutil/Makefile.am index 98f32633b894..a326060cfea9 100644 --- a/src/libutil/Makefile.am +++ b/src/libutil/Makefile.am @@ -1,12 +1,12 @@ pkglib_LTLIBRARIES = libutil.la libutil_la_SOURCES = util.cc hash.cc serialise.cc \ - archive.cc xml-writer.cc + archive.cc xml-writer.cc immutable.cc libutil_la_LIBADD = ../boost/format/libformat.la ${aterm_lib} ${sqlite_lib} pkginclude_HEADERS = util.hh hash.hh serialise.hh \ - archive.hh xml-writer.hh types.hh + archive.hh xml-writer.hh types.hh immutable.hh if !HAVE_OPENSSL libutil_la_SOURCES += \ |