thinking about syscalls and pipes

1 files changed, 54 insertions, 0 deletions

diff --git a/test/pipetest.c b/test/pipetest.c
new file mode 100644
index 0000000..e848049
--- /dev/null
+++ b/test/pipetest.c
@@ -0,0 +1,54 @@
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+
+int main(int argc, char *argv[])
+{
+    printf("LINUX PIPE TEST\n");
+
+    if(argc<=1)
+    {
+	printf("one argument please [read|write]\n");
+    }
+
+    if(!strcmp(argv[1],"read"))
+    {
+	FILE *p=fopen("./testpipe","r");
+	printf("opened for reading\n");
+	printf("feof: %i\n",feof(p));
+
+	if(p==NULL)
+	{
+	    int err=errno;
+	    printf("Opening pipe failed with errno %d : %s\n",err,strerror(err));
+	}
+
+	while(1)
+	{
+	char buf[256];
+	int ret=fread(buf,1,10,p);
+	buf[10]=0;
+        printf("read: %i %s\n",ret,buf);
+	printf("feof: %i\n",feof(p));
+	if (feof(p)) break;
+	}
+    }
+    
+    if(!strcmp(argv[1],"write"))
+    {
+	FILE *p=fopen("./testpipe","a");
+	printf("opened for writing\n");
+	if(p==NULL)
+	{
+	    int err=errno;
+	    printf("Opening pipe failed with errno %d : %s\n",err,strerror(err));
+	}
+	fwrite("DUPA123",1,7,p);
+	fwrite("DUPA123",1,7,p);
+	for(int i=0;i<10000;i++)
+	{
+	fwrite("DUPA123",1,7,p);
+	}
+	//fclose(p);
+    }
+}