t9p: fix writen (sqweek) - plan9port - [fork] Plan 9 from user space
(HTM) git clone git://src.adamsgaard.dk/plan9port
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---
(DIR) commit dfe57535afa96031add209ab71ef052178951aec
(DIR) parent 3e4ceac760d5b2b7238cb27d13045df76c6d4c20
(HTM) Author: Russ Cox <rsc@swtch.com>
Date: Thu, 19 Jun 2008 23:07:48 -0400
9p: fix writen (sqweek)
Diffstat:
M src/cmd/9p.c | 21 +++++++++++++--------
1 file changed, 13 insertions(+), 8 deletions(-)
---
(DIR) diff --git a/src/cmd/9p.c b/src/cmd/9p.c
t@@ -28,16 +28,21 @@ usage(void)
int
writen(int fd, void *buf, int n)
{
- long m, tot;
+ int m, tot;
- for(tot=0; tot<n; tot+=m){
- m = n - tot;
- if(m > 8192)
- m = 8192;
- if(write(fd, (uchar*)buf+tot, m) != m)
- break;
+ if(n < 0){
+ werrstr("bad count");
+ return -1;
}
- return tot;
+ if(n == 0)
+ return 0;
+
+ tot = 0;
+ while((m = write(fd, (char*)buf+tot, n-tot)) > 0)
+ tot += m;
+ if(tot < n)
+ return -1;
+ return n;
}
CFsys *(*nsmnt)(char*, char*) = nsamount;