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llvm/lib/Support/Unix
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David Majnemer 3ba3a4ccfd Support: Add a utility to remap std{in,out,err} to /dev/null if closed 
It's possible to start a program with one (or all) of the standard file
descriptors closed.  Subsequent open system calls will give the program
a low-numbered file descriptor.

This is problematic because we may believe we are writing to standard
out instead of a file.

Introduce Process::FixupStandardFileDescriptors, a helper function to
remap standard file descriptors to /dev/null if they were closed before
the program started.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219170 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-06 23:16:18 +00:00
..
Host.inc Unix/Host.inc: Remove <cstdlib>. It has been unused for a long time. 2014-09-24 04:45:02 +00:00
Memory.inc Revert: r211588 - [mips] Use __clear_cache builtin instead of cacheflush() in Unix Memory::InvalidateInstructionCache() 2014-06-24 13:53:56 +00:00
Mutex.inc
Path.inc Misc cleanups to the FileSytem api. 2014-09-11 20:30:02 +00:00
Process.inc Support: Add a utility to remap std{in,out,err} to /dev/null if closed 2014-10-06 23:16:18 +00:00
Program.inc Add writeFileWithSystemEncoding to LibLLVMSuppor. 2014-09-03 20:02:00 +00:00
README.txt
RWMutex.inc
Signals.inc Cleaning up remaining static initializers in Signals.inc 2014-09-02 23:48:13 +00:00
ThreadLocal.inc
TimeValue.inc Cleaning up static initializers in TimeValue. 2014-08-29 01:05:12 +00:00
Unix.h Canonicalize header guards into a common format. 2014-08-13 16:26:38 +00:00
Watchdog.inc

README.txt 

llvm/lib/Support/Unix README
===========================

This directory provides implementations of the lib/System classes that
are common to two or more variants of UNIX. For example, the directory
structure underneath this directory could look like this:

Unix           - only code that is truly generic to all UNIX platforms
  Posix        - code that is specific to Posix variants of UNIX
  SUS          - code that is specific to the Single Unix Specification
  SysV         - code that is specific to System V variants of UNIX

As a rule, only those directories actually needing to be created should be
created. Also, further subdirectories could be created to reflect versions of
the various standards. For example, under SUS there could be v1, v2, and v3
subdirectories to reflect the three major versions of SUS.