[Libguestfs] [PATCH libnbd 3/3] docs: Call nbd_close on error path before exiting.

[Richard W.M. Jones]

Suggested by Nick Clifton.
---
 docs/libnbd.pod     | 10 ++++++++++
 generator/generator |  1 +
 2 files changed, 11 insertions(+)

diff --git a/docs/libnbd.pod b/docs/libnbd.pod
index 6a329d6..b42d000 100644
--- a/docs/libnbd.pod
+++ b/docs/libnbd.pod
@@ -13,6 +13,7 @@ libnbd - network block device (NBD) client library in userspace
      nbd_connect_tcp (nbd, "server.example.com", "nbd") == -1 ||
      nbd_pread (nbd, buf, sizeof buf, 0, 0) == -1)
    fprintf (stderr, "%s\n", nbd_get_error ());
+   nbd_close (nbd);
    exit (EXIT_FAILURE);
  }
  nbd_close (nbd);
@@ -80,10 +81,12 @@ Create a handle and connect to the server:
  nbd = nbd_create ();
  if (!nbd) {
    fprintf (stderr, "%s\n", nbd_get_error ());
+   nbd_close (nbd);
    exit (EXIT_FAILURE);
  }
  if (nbd_connect_tcp (nbd, "server.example.com", "nbd") == -1) {
    fprintf (stderr, "%s\n", nbd_get_error ());
+   nbd_close (nbd);
    exit (EXIT_FAILURE);
  }
 
@@ -93,6 +96,7 @@ Read the first sector (512 bytes) from the NBD export:
  
  if (nbd_pread (nbd, buf, sizeof buf, 0, 0) == -1) {
    fprintf (stderr, "%s\n", nbd_get_error ());
+   nbd_close (nbd);
    exit (EXIT_FAILURE);
  }
 
@@ -125,6 +129,7 @@ example the asynchronous variant of C<nbd_pread> is:
  cookie = nbd_aio_pread (nbd, buf, sizeof buf, 0, 0);
  if (cookie == -1) {
    fprintf (stderr, "%s\n", nbd_get_error ());
+   nbd_close (nbd);
    exit (EXIT_FAILURE);
  }
 
@@ -222,6 +227,7 @@ As with the high level API, it all starts by creating a handle:
  nbd = nbd_create ();
  if (nbd == NULL) {
    fprintf (stderr, "%s\n", nbd_get_error ());
+   nbd_close (nbd);
    exit (EXIT_FAILURE);
  }
 
@@ -237,11 +243,13 @@ until the connection becomes ready:
     then ... */
  if (nbd_aio_connect (nbd, &addr, len) == -1) {
    fprintf (stderr, "%s\n", nbd_get_error ());
+   nbd_close (nbd);
    exit (EXIT_FAILURE);
  }
  while (!nbd_aio_is_ready (nbd)) {
    if (nbd_poll (nbd, -1) == -1) {
      fprintf (stderr, "%s\n", nbd_get_error ());
+     nbd_close (nbd);
      exit (EXIT_FAILURE);
    }
  }
@@ -256,11 +264,13 @@ command has completed:
  cookie = nbd_aio_pread (nbd, buf, sizeof buf, offset, 0)
  if (cookie == -1) {
    fprintf (stderr, "%s\n", nbd_get_error ());
+   nbd_close (nbd);
    exit (EXIT_FAILURE);
  }
  while (!nbd_aio_command_completed (nbd, cookie)) {
    if (nbd_poll (nbd, -1) == -1) {
      fprintf (stderr, "%s\n", nbd_get_error ());
+     nbd_close (nbd);
      exit (EXIT_FAILURE);
    }
  }
diff --git a/generator/generator b/generator/generator
index 6621bee..29d0373 100755
--- a/generator/generator
+++ b/generator/generator
@@ -3773,6 +3773,7 @@ libnbd-api - libnbd C API
      nbd_connect_tcp (nbd, \"server.example.com\", \"nbd\") == -1 ||
      nbd_pread (nbd, buf, sizeof buf, 0, 0) == -1)
    fprintf (stderr, \"%%s\\n\", nbd_get_error ());
+   nbd_close (nbd);
    exit (EXIT_FAILURE);
  }
  nbd_close (nbd);
-- 
2.22.0