For Windows, sanitizers work with Handles, not with posix file descriptors,
because they use the windows-specific API. So we need to convert the fds to
handles before passing them to the sanitizer library.
After this change, close_fd_mask is fixed for Windows (this fix some tests too).
Differential Revision: https://reviews.llvm.org/D29548
llvm-svn: 294388
Fix libFuzzer when setting -close_fd_mask to a non-zero value.
In previous implementation, libFuzzer closes the file descriptors for
stdout/stderr. This has some disavantages:
For `fuzzer-fdmask.test`, we write directly to stdout and stderr using the
file streams stdout and stderr, after the file descriptors are closed, which is
undefined behavior. In Windows, in particular, this was making the test fail.
Also, if we close stdout and we open a new file in libFuzzer, we get the file
descriptor 1, which could generate problem if some code assumes file descriptors
refers to stdout and works directly writing to the file descriptor 1, but it
will be writing to the opened file (for example using std::cout).
Instead of closing the file descriptors, I redirect the output to /dev/null on
linux and nul on Windows.
Differential Revision: https://reviews.llvm.org/D28718
llvm-svn: 292743
Update `ListFilesInDirRecursive` implementation on Windows to have the same
behavior than for Posix, when the directory doesn't exists and when it is empty.
Differential Revision: https://reviews.llvm.org/D28711
llvm-svn: 292741
Windows uses some macros to replace DeleteFile() by DeleteFileA() or
DeleteFileW(). This was causing an error at link time.
DeleteFile was renamed to RemoveFile().
Differential Revision: https://reviews.llvm.org/D27577
llvm-svn: 289563
Implement DirName from scratch to avoid dependencies on external libraries.
It's based on MSDN documentation for Naming Files, Paths, and Namespaces.
The algorithm can't simply start from the end and look backwards for the
first separator, because we need to preserve the prefix that represent
the root location. We shouldn't remove anything there. In Windows we
have many different options, like:
\\Server\Share\ , \ , C: , C:\ , \\?\C:\ , \\?\UNC\Server\Share\
We remove the last separator in the rest of the path, if it exists.
It was implemented to have a similar behaviour to dirname() in linux,
removing trailing separators, returning "." when the path doesn't
contain separators, etc.
Differential Revision: https://reviews.llvm.org/D27579
llvm-svn: 289562
Reorganize #includes to follow LLVM Coding Standards.
Include some missing headers. Required to use `Printf()`.
Aside from that, this patch contains no functional change.
It is purely a re-organization.
Differential Revision: https://reviews.llvm.org/D27363
llvm-svn: 289560
This patch moves some posix specific file i/o code into a new
file, FuzzerIOPosix.cpp, and provides implementations for these
functions on Windows in FuzzerIOWindows.cpp. This is another
incremental step towards getting libfuzzer working on Windows,
although it still should not be expected to be fully working.
Patch by Marcos Pividori
Differential Revision: https://reviews.llvm.org/D27233
llvm-svn: 288275
Marcos Pividori