svn commit: r269116 - head/lib/libc/stdio
Andrey A. Chernov
ache at FreeBSD.org
Sat Jul 26 08:41:04 UTC 2014
Author: ache
Date: Sat Jul 26 08:41:03 2014
New Revision: 269116
URL: http://svnweb.freebsd.org/changeset/base/269116
Log:
In the "Too many open files" edge cases don't try to preserve old
number for non-std* descriptors, but close old file and retry.
Obtained from: inspired by Apple's change from pfg@
MFC after: 2 weeks
Modified:
head/lib/libc/stdio/freopen.c
Modified: head/lib/libc/stdio/freopen.c
==============================================================================
--- head/lib/libc/stdio/freopen.c Sat Jul 26 07:40:31 2014 (r269115)
+++ head/lib/libc/stdio/freopen.c Sat Jul 26 08:41:03 2014 (r269116)
@@ -151,6 +151,14 @@ freopen(const char * __restrict file, co
/* Get a new descriptor to refer to the new file. */
f = _open(file, oflags, DEFFILEMODE);
+ /* If out of fd's close the old one and try again. */
+ if (f < 0 && isopen && wantfd > STDERR_FILENO &&
+ (errno == ENFILE || errno == EMFILE)) {
+ (void) (*fp->_close)(fp->_cookie);
+ isopen = 0;
+ wantfd = -1;
+ f = _open(file, oflags, DEFFILEMODE);
+ }
sverrno = errno;
finish:
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