Finita la conversione dei listati in file separati. Passato anche alla nuova

[gapil.git] / listati / FortuneClient.c

diff --git a/listati/FortuneClient.c b/listati/FortuneClient.c
new file mode 100644 (file)
index 0000000..f0c1030
--- /dev/null
+++ b/listati/FortuneClient.c
@@ -0,0 +1,36 @@
+int main(int argc, char *argv[])
+{
+/* Variables definition */
+    int n = 0;
+    char *fortunefilename = "/tmp/fortune.fifo";
+    char line[80];
+    int fifo_server, fifo_client;
+    char fifoname[80];
+    int nread;
+    char buffer[PIPE_BUF];
+    ...
+    snprintf(fifoname, 80, "/tmp/fortune.%d", getpid());     /* compose name */
+    if (mkfifo(fifoname, 0622)) {                        /* open client fifo */
+        if (errno!=EEXIST) {
+            perror("Cannot create well known fifo");
+            exit(-1);
+        }
+    }
+    fifo_server = open(fortunefilename, O_WRONLY);       /* open server fifo */
+    if (fifo_server < 0) {
+        perror("Cannot open well known fifo");
+        exit(-1);
+    }
+    nread = write(fifo_server, fifoname, strlen(fifoname)+1);  /* write name */
+    close(fifo_server);                                 /* close server fifo */
+    fifo_client = open(fifoname, O_RDONLY);              /* open client fifo */
+    if (fifo_client < 0) {
+        perror("Cannot open well known fifo");
+        exit(-1);
+    }
+    nread = read(fifo_client, buffer, sizeof(buffer));        /* read answer */
+    printf("%s", buffer);                                   /* print fortune */
+    close(fifo_client);                                      /* close client */
+    close(fifo_server);                                      /* close server */
+    unlink(fifoname);                                  /* remove client fifo */
+}