CVSing the test suite.

[users/jgh/exim.git] / test / src / fd.c

diff --git a/test/src/fd.c b/test/src/fd.c
new file mode 100644 (file)
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+++ b/test/src/fd.c
@@ -0,0 +1,104 @@
+/* $Cambridge: exim/test/src/fd.c,v 1.1 2006/02/06 16:24:05 ph10 Exp $ */
+
+/* A program to check on open file descriptors. There are some weird options
+for running it in Exim testing. If -q is given, make output suitable for
+queryprogram. If -f is given, copy the input as for a transport filter. If -s
+is given, add extra output from stat(). */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+
+/* The way of finding out the maximum file descriptor various between OS.
+Most have sysconf(), but a few don't. */
+
+#ifdef _SC_OPEN_MAX
+  #define mac_maxfd (sysconf(_SC_OPEN_MAX) - 1)
+#elif defined OPEN_MAX
+  #define mac_maxfd (OPEN_MAX - 1)
+#elif defined NOFILE
+  #define mac_maxfd (NOFILE - 1)
+#else
+  #define mac_maxfd 255;    /* just in case */
+#endif
+
+
+int main(int argc, char **argv)
+{
+int fd;
+int qpgm = 0;
+int filter = 0;
+int use_stat = 0;
+struct stat statbuf;
+char buffer[8192];
+char *p = buffer;
+
+while (argc > 1)
+  {
+  char *arg = argv[--argc];
+  if (strcmp(arg, "-q") == 0) qpgm = 1;
+  if (strcmp(arg, "-f") == 0) filter = 1;
+  if (strcmp(arg, "-s") == 0) use_stat = 1;
+  }
+
+if (filter)
+  {
+  int len;
+  while ((len = read(0, buffer, sizeof(buffer))) > 0)
+    write(1, buffer, len);
+  }
+
+p += sprintf(p, "max fd = %d\n", (int)mac_maxfd);
+
+for (fd = 0; fd <= mac_maxfd; fd++)
+  {
+  int options = fcntl(fd, F_GETFD);
+  if (options >= 0)
+    {
+    int status = fcntl(fd, F_GETFL);
+    p += sprintf(p, "%3d opt=%d status=%X ", fd, options, status);
+    switch(status & 3)
+      {
+      case 0: p += sprintf(p, "RDONLY");
+      break;
+      case 1: p += sprintf(p, "WRONLY");
+      break;
+      case 2: p += sprintf(p, "RDWR");
+      break;
+      }
+    if (isatty(fd)) p += sprintf(p, " TTY");
+    if ((status & 8) != 0) p += sprintf(p, " APPEND");
+
+    if (use_stat && fstat(fd, &statbuf) >= 0)
+      {
+      p += sprintf(p, " mode=%o uid=%d size=%d", (int)statbuf.st_mode,
+        (int)statbuf.st_uid, (int)statbuf.st_size);
+      }
+
+    p += sprintf(p, "\n");
+    }
+  else if (errno != EBADF)
+    {
+    p += sprintf(p, "%3d errno=%d %s\n", fd, errno, strerror(errno));
+    }
+  }
+
+if (qpgm)
+  {
+  for (p = buffer; *p != 0; p++)
+    if (*p == '\n') *p = ' ';
+  printf("ACCEPT DATA=\"%s\"\n", buffer);
+  }
+else printf("%s", buffer);
+
+exit(0);
+}
+
+/* End */