Open source embedded filesystem (or single file virtual filesystem, or structured storage) library for C [closed]

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I'm not sure what the "general" name of something like this might be. I'm looking for a library that gives me a file format to store different types of binary data in an expanding single file.

• open source, non-GPL (LGPL ok)
• C interface
• the file format is a single file
• multiple files within using a POSIX-like file API (or multiple "blobs" within using some other API)
• file/structure editing is done in-place
• reliable first, performant second

Examples include:

• the virtual drives of a virtual machine
• whefs
• HDF
• CDF
• NetCDF

Problems with the above:

• whefs doesn't appear to be very mature, but best describes what I'm after
• HDF, CDF, NetCDF are usable (also very reliable and fast), but they're rather complicated an开发者_如何学运维d I'm not entirely convinced of their support for opaque binary "blobs"

Edit:

Forgot to mention, one other relevant question:

Simple Virtual Filesystem in C/C++

Another similar question:

Is there an open-source alternative to Windows compound files?

Edit:

Added condition of in-place editing.

Edit:

whefs superseded by: whio_epfs

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This appears to do what I was looking for: libgsf

Still need to test its reliability/performance and how cross-platform the binary format is.

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It sounds like you're talking about the Linux loopback device, which lets you treat a file on a filesystem as a first-class block device (and then proceed to mkfs, mount, etc.)

(What sort of platform are you targetting? A fully-featured Unixlike? Something in the embedded space with a small footprint?)

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The WxWindows library supports ZIP files (see http://docs.wxwidgets.org/stable/wx_wxarc.html#wxarc). This has also the advantage that you can look at the contents using a ZIP manager (e.g. WINZIP).

A commercial alternative is ChillKat (http://www.chilkatsoft.com/)

If security is a concern, encrypt the file contents and mangle the file names in the ZIP archive.

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Eet library from the Enlightenment project maybe?

http://en.wikipedia.org/wiki/Enlightenment_Foundation_Libraries#EET http://docs.enlightenment.org/api/eet/html/

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What about BerkeleyDB? It's not exactly a filesystem but it's quite transparent to store 'binary data' in a file. License seems to be quite permissive as well.