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| author | Robert Mustacchi <rm@fingolfin.org> | 2020-03-02 05:43:45 +0000 |
|---|---|---|
| committer | Robert Mustacchi <rm@fingolfin.org> | 2020-03-26 07:42:53 +0000 |
| commit | cd62a92d4a964bfe61d35ba2301b69e65e22a509 (patch) | |
| tree | 8e346d9037f7c654ffe58ed0d5e27f34025dd672 /usr/src/man/man3c/fwrite.3c | |
| parent | 1470234269f4edea4cbf270cb2475e4988b788d5 (diff) | |
| download | illumos-gate-cd62a92d4a964bfe61d35ba2301b69e65e22a509.tar.gz | |
7092 Want support for stdio memory streams
12360 fwrite can loop forever on zero byte write
12392 ftello64 doesn't handle ungetc() correctly when unbuffered
Reviewed by: John Levon <john.levon@joyent.com>
Reviewed by: Yuri Pankov <ypankov@fastmail.com>
Approved by: Dan McDonald <danmcd@joyent.com>
Diffstat (limited to 'usr/src/man/man3c/fwrite.3c')
| -rw-r--r-- | usr/src/man/man3c/fwrite.3c | 24 |
1 files changed, 9 insertions, 15 deletions
diff --git a/usr/src/man/man3c/fwrite.3c b/usr/src/man/man3c/fwrite.3c index 0027f2a426..92f13cd98f 100644 --- a/usr/src/man/man3c/fwrite.3c +++ b/usr/src/man/man3c/fwrite.3c @@ -44,11 +44,10 @@ .\" Copyright (c) 1997, The Open Group. All Rights Reserved. .\" Portions Copyright (c) 2002, Sun Microsystems, Inc. All Rights Reserved. .\" -.TH FWRITE 3C "Jul 24, 2002" +.TH FWRITE 3C "March 25, 2020" .SH NAME fwrite \- binary output .SH SYNOPSIS -.LP .nf #include <stdio.h> @@ -56,8 +55,6 @@ fwrite \- binary output .fi .SH DESCRIPTION -.sp -.LP The \fBfwrite()\fR function writes, from the array pointed to by \fIptr\fR, up to \fInitems\fR elements whose size is specified by \fIsize\fR, to the stream pointed to by \fIstream\fR. For each object, \fIsize\fR calls are made to the @@ -72,28 +69,26 @@ The \fBst_ctime\fR and \fBst_mtime\fR fields of the file will be marked for update between the successful execution of \fBfwrite()\fR and the next successful completion of a call to \fBfflush\fR(3C) or \fBfclose\fR(3C) on the same stream or a call to \fBexit\fR(2) or \fBabort\fR(3C). -.SH RETURN VALUES .sp .LP +When using the \fBfwrite()\fR function on a stream that was created with +\fBopen_wmemstream\fR(3C), there are additional constraints on the +binary data that can be written due to the nature of the stream. Please +see \fBopen_wmemstream\fR(3C) for additional information. +.SH RETURN VALUES The \fBfwrite()\fR function returns the number of elements successfully written, which might be less than \fInitems\fR if a write error is encountered. If \fIsize\fR or \fInitems\fR is 0, \fBfwrite()\fR returns 0 and the state of the stream remains unchanged. Otherwise, if a write error occurs, the error indicator for the stream is set and \fBerrno\fR is set to indicate the error. .SH ERRORS -.sp -.LP Refer to \fBfputc\fR(3C). .SH USAGE -.sp -.LP Because of possible differences in element length and byte ordering, files written using \fBfwrite()\fR are application-dependent, and possibly cannot be read using \fBfread\fR(3C) by a different application or by the same application on a different processor. .SH ATTRIBUTES -.sp -.LP See \fBattributes\fR(5) for descriptions of the following attributes: .sp @@ -110,8 +105,7 @@ MT-Level MT-Safe .TE .SH SEE ALSO -.sp -.LP \fBwrite\fR(2), \fBfclose\fR(3C), \fBferror\fR(3C), \fBfopen\fR(3C), -\fBfread\fR(3C), \fBgetc\fR(3C), \fBgets\fR(3C), \fBprintf\fR(3C), -\fBputc\fR(3C), \fBputs\fR(3C), \fBattributes\fR(5), \fBstandards\fR(5) +\fBfread\fR(3C), \fBgetc\fR(3C), \fBgets\fR(3C), \fBopen_wmemstream\fR(3C), +\fBprintf\fR(3C), \fBputc\fR(3C), \fBputs\fR(3C), \fBattributes\fR(5), +\fBstandards\fR(5) |