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| author | Marcel Telka <marcel@telka.sk> | 2018-07-19 14:33:28 +0200 |
|---|---|---|
| committer | Dan McDonald <danmcd@joyent.com> | 2018-07-20 11:46:02 -0400 |
| commit | d3811b6fb7218c4fd6a4ecc171217022e137b5dc (patch) | |
| tree | 6003159f037035b012937a597030bc48ee1640f1 | |
| parent | 614f1d633e921143ad22010eeec64ed7c6aa627c (diff) | |
| download | illumos-joyent-d3811b6fb7218c4fd6a4ecc171217022e137b5dc.tar.gz | |
9657 sendfile(3ext): off and EINVAL are not documented properly
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed by: Sebastian Wiedenroth <wiedi@frubar.net>
Approved by: Dan McDonald <danmcd@joyent.com>
| -rw-r--r-- | usr/src/man/man3ext/sendfile.3ext | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/usr/src/man/man3ext/sendfile.3ext b/usr/src/man/man3ext/sendfile.3ext index ade1b0dfeb..38f974987e 100644 --- a/usr/src/man/man3ext/sendfile.3ext +++ b/usr/src/man/man3ext/sendfile.3ext @@ -3,7 +3,7 @@ .\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License. .\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License. .\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner] -.TH SENDFILE 3EXT "Nov 3, 2017" +.TH SENDFILE 3EXT "Jul 19, 2018" .SH NAME sendfile \- send files over sockets or copy files to files .SH SYNOPSIS @@ -38,7 +38,11 @@ The \fBsendfile()\fR function can also be used to send buffers by pointing Upon successful completion, \fBsendfile()\fR returns the total number of bytes written to \fIout_fd\fR and also updates the offset to point to the byte that follows the last byte read. Otherwise, it returns \fB-1\fR, and \fBerrno\fR is -set to indicate the error. +set to indicate the error. In some error cases \fBsendfile()\fR may still +write some data before encountering an error and returning \fB-1\fR. When that +occurs, \fIoff\fR is updated to point to the byte that follows the last byte +copied and should be compared with its value before calling \fBsendfile()\fR to +determine how much data was sent. .SH ERRORS .LP The \fBsendfile()\fR function will fail if: @@ -83,6 +87,8 @@ reading. .RS 16n The offset cannot be represented by the \fBoff_t\fR structure, or the length is negative when cast to \fBssize_t\fR. +.sp +Fewer bytes were transferred than were requested. .RE .sp |