Closes #47

Closes #29

Add a new fault injection that returns random errno supported by performed FUSE operation. The source of errnos for a POSIX function is a POSIX standard. Source of errnos for other functions are Linux, macOS, FreeBSD and OpenBSD manual pages. TODO: - support errno_regexp, by default - random supported errnos - describe details in manual page Closes #6 Closes #8

In upcoming patch with implementation of fault injection that returns random errno we need to resolve FUSE operation and to make it easier error_inject() switched from using FUSE operation name to using operation code. Part of: #6

Closes #28

Follows up: #18

Patch adds command line options and configuration file support to unreliablefs. unreliablefs can be managed in runtime using simple .INI configuration file. unreliablefs config uses configuration language which provides a structure similar to what's found in Microsoft Windows INI files or used by configparser Python module [2]. To make it possible third-party C library [1] has been imported. There is only one supported error injection - "errinj_noop" that replaces file operation with no operation. More error injections are coming. 1. https://github.com/benhoyt/inih 2. https://docs.python.org/3/library/configparser.html Closes #3 Closes #18 Closes #1 Closes #7 Closes #12 Closes #60

Disabled by default

Using target_compile_options() is one of the best practice for CMake so replaced CMAKE_C_FLAGS and CMAKE_CXX_FLAGS by target_compile_options(). Also patch adds options -Wall and -Wextra.

brew install --cask osxfuse ==> Tapping homebrew/cask Cloning into '/usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask'... Error: Invalid cask: /usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask/Casks/emacs.rb Cask ''/Applications/Emacs.app/Contents/Resources/man/man1/ebrowse.1.gz' is not a valid man page name' definition is invalid. Error: Cannot tap homebrew/cask: invalid syntax in tap! 1. https://cirrus-ci.com/task/6024547758505984