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authormatthew <matthew@openbsd.org>2012-05-22 20:05:11 +0000
committermatthew <matthew@openbsd.org>2012-05-22 20:05:11 +0000
commita288139cca0c00a06dbaaf795d02a6e14c1a9ee0 (patch)
tree4b61814d90d0f509aa39012903011744339d15d7 /lib/libc/stdio
parentMake the multicast filter routine conform to the Party's standards. Adapted (diff)
downloadwireguard-openbsd-a288139cca0c00a06dbaaf795d02a6e14c1a9ee0.tar.xz
wireguard-openbsd-a288139cca0c00a06dbaaf795d02a6e14c1a9ee0.zip
Document that ftell() may return EOVERFLOW.
Diff from Tim van der Molen.
Diffstat (limited to 'lib/libc/stdio')
-rw-r--r--lib/libc/stdio/fseek.337
1 files changed, 31 insertions, 6 deletions
diff --git a/lib/libc/stdio/fseek.3 b/lib/libc/stdio/fseek.3
index a8e2bac50ee..21235cfd99a 100644
--- a/lib/libc/stdio/fseek.3
+++ b/lib/libc/stdio/fseek.3
@@ -1,4 +1,4 @@
-.\" $OpenBSD: fseek.3,v 1.12 2011/07/05 15:30:10 jmc Exp $
+.\" $OpenBSD: fseek.3,v 1.13 2012/05/22 20:05:11 matthew Exp $
.\"
.\" Copyright (c) 1990, 1991, 1993
.\" The Regents of the University of California. All rights reserved.
@@ -31,7 +31,7 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.Dd $Mdocdate: July 5 2011 $
+.Dd $Mdocdate: May 22 2012 $
.Dt FSEEK 3
.Os
.Sh NAME
@@ -169,24 +169,49 @@ return a non-zero value and the global variable
.Va errno
is set to indicate the error.
.Sh ERRORS
+The
+.Fn fgetpos ,
+.Fn fseek ,
+.Fn fseeko ,
+.Fn fsetpos ,
+.Fn ftell ,
+.Fn ftello ,
+and
+.Fn rewind
+functions will fail if:
.Bl -tag -width Er
.It Bq Er EBADF
The
.Fa stream
specified is not a seekable stream.
+.El
+.Pp
+Additionally, the
+.Fn fseek
+and
+.Fn fseeko
+functions will fail if:
+.Bl -tag -width Er
.It Bq Er EINVAL
The
.Fa whence
-argument to
-.Fn fseek
-was not
+argument was not
.Dv SEEK_SET ,
.Dv SEEK_END ,
or
.Dv SEEK_CUR .
.El
.Pp
-The functions
+Additionally, the
+.Fn ftell
+function will fail if:
+.Bl -tag -width Er
+.It Bq Er EOVERFLOW
+The value of the file position indicator is too large to be represented by a
+.Vt long .
+.El
+.Pp
+Finally, the functions
.Fn fgetpos ,
.Fn fseek ,
.Fn fseeko ,