Import sources from 2011-03-30 iso image

1 files changed, 39 insertions, 0 deletions

diff --git a/sys/src/ape/lib/ap/stdio/setvbuf.c b/sys/src/ape/lib/ap/stdio/setvbuf.c
new file mode 100755
index 000000000..58bea0098
--- /dev/null
+++ b/sys/src/ape/lib/ap/stdio/setvbuf.c
@@ -0,0 +1,39 @@
+/*
+ * pANS stdio -- setvbuf
+ */
+#include "iolib.h"
+#include <stdlib.h>
+int setvbuf(FILE *f, char *buf, int mode, size_t size){
+	if(f->state!=OPEN){
+		f->state=ERR;
+		return -1;
+	}
+	f->state=RDWR;
+	switch(mode){
+	case _IOLBF:
+		f->flags|=LINEBUF;
+	case _IOFBF:
+		if(buf==0){
+			buf=malloc(size);
+			if(buf==0){
+				f->state=ERR;
+				return -1;
+			}
+			f->flags|=BALLOC;
+		}
+		f->bufl=size;
+		break;
+	case _IONBF:
+		buf=f->unbuf;
+		f->bufl=0;
+		break;
+	}
+	f->rp=f->wp=f->lp=f->buf=buf;
+	f->state=RDWR;
+	return 0;
+}
+int _IO_setvbuf(FILE *f){
+	if(f==stderr || (f==stdout && isatty(1)))
+		return setvbuf(f, (char *)0, _IOLBF, BUFSIZ);
+	return setvbuf(f, (char *)0, _IOFBF, BUFSIZ);
+}