dup(2): Clarify return value, in particular of dup2().
This commit is contained in:
parent
1f4e9654bd
commit
4b08438c22
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=251203
@ -28,7 +28,7 @@
|
|||||||
.\" @(#)dup.2 8.1 (Berkeley) 6/4/93
|
.\" @(#)dup.2 8.1 (Berkeley) 6/4/93
|
||||||
.\" $FreeBSD$
|
.\" $FreeBSD$
|
||||||
.\"
|
.\"
|
||||||
.Dd April 21, 2013
|
.Dd June 1, 2013
|
||||||
.Dt DUP 2
|
.Dt DUP 2
|
||||||
.Os
|
.Os
|
||||||
.Sh NAME
|
.Sh NAME
|
||||||
@ -113,10 +113,11 @@ is a valid descriptor, then
|
|||||||
.Fn dup2
|
.Fn dup2
|
||||||
is successful, and does nothing.
|
is successful, and does nothing.
|
||||||
.Sh RETURN VALUES
|
.Sh RETURN VALUES
|
||||||
The value -1 is returned if an error occurs in either call.
|
These calls return the new file descriptor if successful;
|
||||||
The external variable
|
otherwise the value -1 is returned and
|
||||||
|
the external variable
|
||||||
.Va errno
|
.Va errno
|
||||||
indicates the cause of the error.
|
is set to indicate the cause of the error.
|
||||||
.Sh ERRORS
|
.Sh ERRORS
|
||||||
The
|
The
|
||||||
.Fn dup
|
.Fn dup
|
||||||
|
Loading…
Reference in New Issue
Block a user