From 5a8e63b2f016735364d17866d5e2bcb35d20c78b Mon Sep 17 00:00:00 2001
From: rsc <devnull@localhost>
Date: Sun, 29 Feb 2004 22:10:26 +0000
Subject: Fighting the good fight.

Move libfmt, libutf into subdirectories of lib9.

Add poll-based socket i/o to libthread, so that we can
avoid using multiple procs when possible, thus removing
dependence on crappy pthreads implementations.

Convert samterm, acme to the single-proc libthread.

Bring libcomplete, acme up-to-date w.r.t. Plan 9 distribution.
---
 src/libfs/write.c | 29 +++++++++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

(limited to 'src/libfs/write.c')

diff --git a/src/libfs/write.c b/src/libfs/write.c
index 5652b491..bae2083e 100644
--- a/src/libfs/write.c
+++ b/src/libfs/write.c
@@ -7,8 +7,8 @@
 #include <fs.h>
 #include "fsimpl.h"
 
-long
-fspwrite(Fid *fid, void *buf, long n, vlong offset)
+static long
+_fspwrite(Fid *fid, void *buf, long n, vlong offset)
 {
 	Fcall tx, rx;
 	void *freep;
@@ -39,6 +39,31 @@ fspwrite(Fid *fid, void *buf, long n, vlong offset)
 	return rx.count;
 }
 
+long
+fspwrite(Fid *fid, void *buf, long n, vlong offset)
+{
+	long tot, want, got;
+	uint msize;
+
+	msize = fid->fs->msize - IOHDRSZ;
+	tot = 0;
+	while(tot < n){
+		want = n - tot;
+		if(want > msize)
+			want = msize;
+		got = _fspwrite(fid, buf, want, offset);
+		if(got < 0){
+			if(tot == 0)
+				return got;
+			break;
+		}
+		tot += got;
+		if(offset != -1)
+			offset += got;
+	}
+	return tot;
+}
+
 long
 fswrite(Fid *fid, void *buf, long n)
 {
-- 
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