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| author | kib <kib@FreeBSD.org> | 2012-07-19 10:23:59 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2012-07-19 10:23:59 +0000 |
| commit | d950d8a13fa882cc5c23240d4fa991db5fee3ef6 (patch) | |
| tree | ba83d87662e0d4a268478d5e9b7e2f8f80623c7d /lib/libc | |
| parent | fb0ee769bd9aa180616ea0ffdb18d9c7bd7a7dfa (diff) | |
| download | FreeBSD-src-d950d8a13fa882cc5c23240d4fa991db5fee3ef6.zip FreeBSD-src-d950d8a13fa882cc5c23240d4fa991db5fee3ef6.tar.gz | |
Document F_DUPFD_CLOEXEC. Also provide some wording changes for
F_DUPFD to make it less confusing, at least for me.
MFC after: 1 week
Diffstat (limited to 'lib/libc')
| -rw-r--r-- | lib/libc/sys/fcntl.2 | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/lib/libc/sys/fcntl.2 b/lib/libc/sys/fcntl.2 index beceb72..0844e87 100644 --- a/lib/libc/sys/fcntl.2 +++ b/lib/libc/sys/fcntl.2 @@ -28,7 +28,7 @@ .\" @(#)fcntl.2 8.2 (Berkeley) 1/12/94 .\" $FreeBSD$ .\" -.Dd January 28, 2012 +.Dd July 18, 2012 .Dt FCNTL 2 .Os .Sh NAME @@ -54,7 +54,7 @@ Depending on the value of .Fn fcntl can take an additional third argument .Fa "int arg" . -.Bl -tag -width F_GETOWNX +.Bl -tag -width F_DUPFD_CLOEXEC .It Dv F_DUPFD Return a new descriptor as follows: .Pp @@ -73,11 +73,22 @@ Same access mode (read, write or read/write). Same file status flags (i.e., both file descriptors share the same file status flags). .It -The close-on-exec flag associated with the new file descriptor -is set to remain open across +The close-on-exec flag +.Dv FD_CLOEXEC +associated with the new file descriptor is cleared, so the file descriptor is +to remain open across .Xr execve 2 system calls. .El +.It Dv F_DUPFD_CLOEXEC +Like +.Dv F_DUPFD , +but the +.Dv FD_CLOEXEC +flag associated with the new file descriptor is set, so the file descriptor +is closed when +.Xr execve 2 +system call executes. .It Dv F_DUP2FD It is functionally equivalent to .Bd -literal -offset indent |
