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/fs.c    |  7 ++++---
 src/libfs/read.c  |  5 +++++
 src/libfs/write.c | 29 +++++++++++++++++++++++++++--
 3 files changed, 36 insertions(+), 5 deletions(-)

(limited to 'src/libfs')

diff --git a/src/libfs/fs.c b/src/libfs/fs.c
index 91d4af17..d912391f 100644
--- a/src/libfs/fs.c
+++ b/src/libfs/fs.c
@@ -5,6 +5,7 @@
 #include <libc.h>
 #include <fcall.h>
 #include <fs.h>
+#include <thread.h>
 #include "fsimpl.h"
 
 static int _fssend(Mux*, void*);
@@ -270,7 +271,7 @@ _fsrecv(Mux *mux)
 	Fsys *fs;
 
 	fs = mux->aux;
-	n = readn(fs->fd, buf, 4);
+	n = threadreadn(fs->fd, buf, 4);
 	if(n != 4)
 		return nil;
 	n = GBIT32(buf);
@@ -280,12 +281,12 @@ _fsrecv(Mux *mux)
 		return nil;
 	}
 	PBIT32(pkt, n);
-	if(readn(fs->fd, pkt+4, n-4) != n-4){
+	if(threadreadn(fs->fd, pkt+4, n-4) != n-4){
 		free(pkt);
 		return nil;
 	}
 	if(pkt[4] == Ropenfd){
-		if((nfd=recvfd(fs->fd)) < 0){
+		if((nfd=threadrecvfd(fs->fd)) < 0){
 			fprint(2, "recv fd error: %r\n");
 			free(pkt);
 			return nil;
diff --git a/src/libfs/read.c b/src/libfs/read.c
index 1ef2cb3a..7cd4fd14 100644
--- a/src/libfs/read.c
+++ b/src/libfs/read.c
@@ -12,7 +12,12 @@ fspread(Fid *fid, void *buf, long n, vlong offset)
 {
 	Fcall tx, rx;
 	void *freep;
+	uint msize;
 
+	msize = fid->fs->msize - IOHDRSZ;
+fprint(2, "n %d msize %d\n", n, msize);
+	if(n > msize)
+		n = msize;
 	tx.type = Tread;
 	tx.fid = fid->fid;
 	if(offset == -1){
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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