David Phillips' FD_SETSIZE fix

1 files changed, 47 insertions, 0 deletions

diff --git a/tests/libtest/lib518.c b/tests/libtest/lib518.c
new file mode 100644
index 000000000..f12bca6de
--- /dev/null
+++ b/tests/libtest/lib518.c
@@ -0,0 +1,47 @@
+#include "test.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include <mprintf.h>
+
+#ifdef HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+
+#ifndef FD_SETSIZE
+#error "this test requires FD_SETSIZE"
+#endif
+
+#define NUM_OPEN (FD_SETSIZE + 10)
+
+int test(char *URL)
+{
+  CURLcode res;
+  CURL *curl;
+  int fd[NUM_OPEN];
+  int i;
+
+  /* open a lot of file descriptors */
+  for (i = 0; i < NUM_OPEN; i++) {
+    fd[i] = open("/dev/null", O_RDONLY);
+    if (fd[i] == -1) {
+      fprintf(stderr, "open: attempt #%i: failed to open /dev/null\n", i);
+      for (i--; i >= 0; i--)
+        close(fd[i]);
+      return CURLE_FAILED_INIT;
+    }
+  }
+
+  curl = curl_easy_init();
+  curl_easy_setopt(curl, CURLOPT_URL, URL);
+  curl_easy_setopt(curl, CURLOPT_HEADER, TRUE);
+  res = curl_easy_perform(curl);
+  curl_easy_cleanup(curl);
+
+  for (i = 0; i < NUM_OPEN; i++)
+    close(fd[i]);
+
+  return (int)res;
+}