[Python-checkins] cpython (merge 3.4 -> default): Fix computation of max_fd on OpenBSD. Issue #23852.

[gregory.p.smith]

https://hg.python.org/cpython/rev/08d0cc23fb00
changeset:   95805:08d0cc23fb00
parent:      95803:8c044904cddb
parent:      95804:7df280b311d0
user:        Gregory P. Smith <greg at krypto.org>
date:        Sat Apr 25 23:44:02 2015 -0700
summary:
  Fix computation of max_fd on OpenBSD.  Issue #23852.

files:
  Modules/_posixsubprocess.c |  10 ++++++++++
  1 files changed, 10 insertions(+), 0 deletions(-)


diff --git a/Modules/_posixsubprocess.c b/Modules/_posixsubprocess.c
--- a/Modules/_posixsubprocess.c
+++ b/Modules/_posixsubprocess.c
@@ -14,6 +14,9 @@
 #ifdef HAVE_SYS_SYSCALL_H
 #include <sys/syscall.h>
 #endif
+#if defined(HAVE_SYS_RESOURCE_H)
+#include <sys/resource.h>
+#endif
 #ifdef HAVE_DIRENT_H
 #include <dirent.h>
 #endif
@@ -174,6 +177,13 @@
     if (local_max_fd >= 0)
         return local_max_fd;
 #endif
+#if defined(HAVE_SYS_RESOURCE_H) && defined(__OpenBSD__)
+    struct rlimit rl;
+    /* Not on the POSIX async signal safe functions list but likely
+     * safe.  TODO - Someone should audit OpenBSD to make sure. */
+    if (getrlimit(RLIMIT_NOFILE, &rl) >= 0)
+        return (long) rl.rlim_max;
+#endif
 #ifdef _SC_OPEN_MAX
     local_max_fd = sysconf(_SC_OPEN_MAX);
     if (local_max_fd == -1)

-- 
Repository URL: https://hg.python.org/cpython