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* Pipe /dev/null into stdin.

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This commit is contained in:
Eelco Dolstra 2003-08-19 13:07:38 +00:00
parent 2de8504791
commit 1472cc4825
1 changed files with 10 additions and 0 deletions
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10
src/exec.cc
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@ -34,6 +34,9 @@ public:
}; };
static string pathNullDevice = "/dev/null";
/* Run a program. */ /* Run a program. */
void runProgram(const string & program, void runProgram(const string & program,
const Strings & args, const Environment & env) const Strings & args, const Environment & env)
@ -97,6 +100,13 @@ void runProgram(const string & program,
if (dup2(STDERR_FILENO, STDOUT_FILENO) == -1) if (dup2(STDERR_FILENO, STDOUT_FILENO) == -1)
throw SysError("cannot dup stderr into stdout"); 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. */ /* Execute the program. This should not return. */
execve(program.c_str(), (char * *) argArr, (char * *) envArr); execve(program.c_str(), (char * *) argArr, (char * *) envArr);