From 1472cc482503a39d173b5dcd34686fd6c3c644d6 Mon Sep 17 00:00:00 2001 From: Eelco Dolstra Date: Tue, 19 Aug 2003 13:07:38 +0000 Subject: [PATCH] * Pipe /dev/null into stdin. --- src/exec.cc | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/src/exec.cc b/src/exec.cc index fdfb467cc..d4ee88f8a 100644 --- a/src/exec.cc +++ b/src/exec.cc @@ -34,6 +34,9 @@ public: }; +static string pathNullDevice = "/dev/null"; + + /* Run a program. */ void runProgram(const string & program, const Strings & args, const Environment & env) @@ -97,6 +100,13 @@ void runProgram(const string & program, if (dup2(STDERR_FILENO, STDOUT_FILENO) == -1) throw SysError("cannot dup stderr into stdout"); + /* Reroute stdin to /dev/null. */ + int fdDevNull = open(pathNullDevice.c_str(), O_RDWR); + if (fdDevNull == -1) + throw SysError(format("cannot open `%1%'") % pathNullDevice); + if (dup2(fdDevNull, STDIN_FILENO) == -1) + throw SysError("cannot dup null device into stdin"); + /* Execute the program. This should not return. */ execve(program.c_str(), (char * *) argArr, (char * *) envArr);