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| author | jilles <jilles@FreeBSD.org> | 2013-05-31 22:09:31 +0000 |
|---|---|---|
| committer | jilles <jilles@FreeBSD.org> | 2013-05-31 22:09:31 +0000 |
| commit | 1bc49fde32f551f717c8b3f5da7815bfa10855cf (patch) | |
| tree | a2ef1746cb671f243c18b4b1ed90e0a9fed19000 /lib/libc/sys/dup.2 | |
| parent | 0c92a49de40eb4a387f5fe0a42ec9a7e6caaa1f9 (diff) | |
| download | FreeBSD-src-1bc49fde32f551f717c8b3f5da7815bfa10855cf.zip FreeBSD-src-1bc49fde32f551f717c8b3f5da7815bfa10855cf.tar.gz | |
dup(2): Clarify return value, in particular of dup2().
Diffstat (limited to 'lib/libc/sys/dup.2')
| -rw-r--r-- | lib/libc/sys/dup.2 | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/lib/libc/sys/dup.2 b/lib/libc/sys/dup.2 index 7b36d27..4254b9e 100644 --- a/lib/libc/sys/dup.2 +++ b/lib/libc/sys/dup.2 @@ -28,7 +28,7 @@ .\" @(#)dup.2 8.1 (Berkeley) 6/4/93 .\" $FreeBSD$ .\" -.Dd April 21, 2013 +.Dd June 1, 2013 .Dt DUP 2 .Os .Sh NAME @@ -113,10 +113,11 @@ is a valid descriptor, then .Fn dup2 is successful, and does nothing. .Sh RETURN VALUES -The value -1 is returned if an error occurs in either call. -The external variable +These calls return the new file descriptor if successful; +otherwise the value -1 is returned and +the external variable .Va errno -indicates the cause of the error. +is set to indicate the cause of the error. .Sh ERRORS The .Fn dup |
