Author: kib Date: Fri Mar 25 14:01:18 2011 New Revision: 220000 URL: http://svn.freebsd.org/changeset/base/220000
Log: Document O_CLOEXEC. Reviewed by: jhb MFC after: 1 week Modified: head/lib/libc/sys/open.2 Modified: head/lib/libc/sys/open.2 ============================================================================== --- head/lib/libc/sys/open.2 Fri Mar 25 14:00:36 2011 (r219999) +++ head/lib/libc/sys/open.2 Fri Mar 25 14:01:18 2011 (r220000) @@ -28,7 +28,7 @@ .\" @(#)open.2 8.2 (Berkeley) 11/16/93 .\" $FreeBSD$ .\" -.Dd February 28, 2009 +.Dd March 25, 2011 .Dt OPEN 2 .Os .Sh NAME @@ -118,6 +118,7 @@ O_NOFOLLOW do not follow symlinks O_NOCTTY don't assign controlling terminal O_TTY_INIT restore default terminal attributes O_DIRECTORY error if file is not a directory +O_CLOEXEC set FD_CLOEXEC upon open .Ed .Pp Opening a file with @@ -231,6 +232,11 @@ from opening files which are even unsafe .Dv O_RDONLY , such as device nodes. .Pp +.Dv O_CLOEXEC +may be used to set +.Dv FD_CLOEXEC +flag for the newly returned file descriptor. +.Pp If successful, .Fn open returns a non-negative integer, termed a file descriptor. @@ -241,12 +247,18 @@ file is set to the beginning of the file When a new file is created it is given the group of the directory which contains it. .Pp -The new descriptor is set to remain open across +Unless +.Dv +O_CLOEXEC +flag was specified, +the new descriptor is set to remain open across .Xr execve 2 system calls; see -.Xr close 2 +.Xr close 2 , +.Xr fcntl 2 and -.Xr fcntl 2 . +.Dv O_CLOEXEC +description. .Pp The system imposes a limit on the number of file descriptors open simultaneously by one process. _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
