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orterun.c: set an fd to be close-on-exec

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Make sure the debugger attach fifo is marked as close-on-exec so that
children procs don't inherit it.  For example, if you salloc a SLURM
allocation and run "mpirun ..." in there (i.e., mpirun is running on
the head node, and launching on to back-end nodes), the forked srun's
will inherit this fd if it is still open.

Refs trac:4550

This commit was SVN r31499.

The following Trac tickets were found above:
  Ticket 4550 --> https://svn.open-mpi.org/trac/ompi/ticket/4550
This commit is contained in:
Jeff Squyres 2014-04-22 21:55:09 +00:00
parent b65e7caa77
commit 87e6232e67
1 changed files with 10 additions and 0 deletions
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10
orte/tools/orterun/orterun.c
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@ -2999,6 +2999,16 @@ static void open_fifo (void)
ORTE_NAME_PRINT(ORTE_PROC_MY_NAME));
return;
}
/* Set this fd to be close-on-exec so that children don't see it */
if (fcntl(attach_fd, F_SETFD, FD_CLOEXEC) == -1) {
opal_output(0, "%s unable to set debugger attach fifo to CLOEXEC",
ORTE_NAME_PRINT(ORTE_PROC_MY_NAME));
close(attach_fd);
attach_fd = -1;
return;
}
opal_output_verbose(2, orte_debug_output,
"%s Monitoring debugger attach fifo %s",
ORTE_NAME_PRINT(ORTE_PROC_MY_NAME),