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authorRuss Cox <rsc@swtch.com>2021-01-14 09:59:54 -0500
committerRuss Cox <rsc@swtch.com>2021-01-14 09:59:54 -0500
commitc3ae85a004c8714fc653629a983327d9a15b36da (patch)
tree11419902559d133c4efcf8a6ca84f5e283bf3074 /src/cmd/rc
parent0cc1faf015a253ef64b97a8453b6fc959c0ee512 (diff)
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rc: do not exit on EINTR from read
This happens if lldb attaches to rc.
Diffstat (limited to 'src/cmd/rc')
-rw-r--r--src/cmd/rc/io.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/src/cmd/rc/io.c b/src/cmd/rc/io.c
index c2e9d7b4..907ba86f 100644
--- a/src/cmd/rc/io.c
+++ b/src/cmd/rc/io.c
@@ -1,4 +1,5 @@
#include <limits.h>
+#include <errno.h>
#include "rc.h"
#include "exec.h"
#include "io.h"
@@ -257,7 +258,15 @@ int
emptybuf(io *f)
{
int n;
- if(f->fd==-1 || (n = Read(f->fd, f->buf, NBUF))<=0) return EOF;
+ if(f->fd==-1)
+ return EOF;
+Loop:
+ errno = 0;
+ n = Read(f->fd, f->buf, NBUF);
+ if(n < 0 && errno == EINTR)
+ goto Loop;
+ if(n <= 0)
+ return EOF;
f->bufp = f->buf;
f->ebuf = f->buf+n;
return *f->bufp++&0xff;