[Python-checkins] bpo-38061: os.closerange() uses closefrom() on FreeBSD (GH-19696)
Victor Stinner
webhook-mailer at python.org
Fri Apr 24 06:00:56 EDT 2020
https://github.com/python/cpython/commit/162c567d164b5742c0d1f3f8bd8c8bab9c117cd0
commit: 162c567d164b5742c0d1f3f8bd8c8bab9c117cd0
branch: master
author: Victor Stinner <vstinner at python.org>
committer: GitHub <noreply at github.com>
date: 2020-04-24T12:00:51+02:00
summary:
bpo-38061: os.closerange() uses closefrom() on FreeBSD (GH-19696)
On FreeBSD, os.closerange(fd_low, fd_high) now calls
closefrom(fd_low) if fd_high is greater than or equal to
sysconf(_SC_OPEN_MAX).
Initial patch by Ed Maste (emaste), Conrad Meyer (cem), Kyle Evans
(kevans) and Kubilay Kocak (koobs):
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242274
files:
A Misc/NEWS.d/next/Library/2020-04-24-01-27-08.bpo-38061.cdlkMz.rst
M Modules/posixmodule.c
diff --git a/Misc/NEWS.d/next/Library/2020-04-24-01-27-08.bpo-38061.cdlkMz.rst b/Misc/NEWS.d/next/Library/2020-04-24-01-27-08.bpo-38061.cdlkMz.rst
new file mode 100644
index 0000000000000..e55d5d50bd7e2
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2020-04-24-01-27-08.bpo-38061.cdlkMz.rst
@@ -0,0 +1,6 @@
+On FreeBSD, ``os.closerange(fd_low, fd_high)`` now calls ``closefrom(fd_low)``
+if *fd_high* is greater than or equal to ``sysconf(_SC_OPEN_MAX)``.
+
+Initial patch by Ed Maste (emaste), Conrad Meyer (cem), Kyle Evans (kevans)
+and Kubilay Kocak (koobs):
+https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242274
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 3386be0fbc85a..3d3f6ac969926 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -8687,10 +8687,13 @@ _fdwalk_close_func(void *lohi, int fd)
int lo = ((int *)lohi)[0];
int hi = ((int *)lohi)[1];
- if (fd >= hi)
+ if (fd >= hi) {
return 1;
- else if (fd >= lo)
- close(fd);
+ }
+ else if (fd >= lo) {
+ /* Ignore errors */
+ (void)close(fd);
+ }
return 0;
}
#endif /* HAVE_FDWALK */
@@ -8711,8 +8714,6 @@ os_closerange_impl(PyObject *module, int fd_low, int fd_high)
{
#ifdef HAVE_FDWALK
int lohi[2];
-#else
- int i;
#endif
Py_BEGIN_ALLOW_THREADS
_Py_BEGIN_SUPPRESS_IPH
@@ -8721,8 +8722,20 @@ os_closerange_impl(PyObject *module, int fd_low, int fd_high)
lohi[1] = fd_high;
fdwalk(_fdwalk_close_func, lohi);
#else
- for (i = Py_MAX(fd_low, 0); i < fd_high; i++)
- close(i);
+ fd_low = Py_MAX(fd_low, 0);
+#ifdef __FreeBSD__
+ if (fd_high >= sysconf(_SC_OPEN_MAX)) {
+ /* Any errors encountered while closing file descriptors are ignored */
+ closefrom(fd_low);
+ }
+ else
+#endif
+ {
+ for (int i = fd_low; i < fd_high; i++) {
+ /* Ignore errors */
+ (void)close(i);
+ }
+ }
#endif
_Py_END_SUPPRESS_IPH
Py_END_ALLOW_THREADS
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