1 files changed, 63 insertions, 1 deletions

diff --git a/nfs/main.c b/nfs/main.c
index aa065518..0e490526 100644
--- a/nfs/main.c
+++ b/nfs/main.c
@@ -28,6 +28,7 @@
 #include <string.h>
 #include <maptime.h>
 #include <argp.h>
+#include <argz.h>
 
 #define DEFAULT_SOFT_RETRIES  3	/* times */
 #define DEFAULT_STAT_TIMEOUT  3	/* seconds */
@@ -147,6 +148,67 @@ static char *args_doc = "REMOTE_FS [HOST]";
 static char *doc = "If HOST is not specified, an attempt is made to extract"
 " it from REMOTE_FS, using either the `HOST:FS' or `FS@HOST' notations.";
 
+/* Called when the the filesystem receives a set-options request.  ARGC and
+   ARGV are the arguments given, and STANDARD_ARGP is a pointer to a struct
+   argp containing the info necessary to parse `standard' netfs runtime
+   options.  The user may chain this onto the end of his own argp structure
+   and call argp_parse, or ignore it completely (or indeed, just call
+   argp_parse on it -- which is the behavior of the default implementation of
+   this function.  EINVAL is returned if an unknown option is encountered.  */
+error_t
+netfs_parse_runtime_options (int argc, char **argv,
+			     const struct argp *standard_argp)
+{
+  const struct argp *argp_parents[] = { standard_argp, 0 };
+  struct argp argp =
+    { common_options, parse_common_opt, 0, 0, argp_parents };
+
+  return
+    argp_parse (&argp, argc, argv,
+		ARGP_NO_ERRS | ARGP_NO_HELP | ARGP_PARSE_ARGV0,
+		0);
+}
+
+/* Called when the the filesystem receives a get-options request.  ARGZ &
+   ARGZ_LEN will contain information on `standard' netfs options; the user
+   may extend them (probably by using argz_add), or ignore them, in which
+   case case ARGZ should be freed, as it is malloced.  The default
+   implementation simply leaves ARGZ & ARGZ_LEN unmodified and returns sucess
+   (0).  */
+error_t
+netfs_unparse_runtime_options (char **argz, size_t *argz_len)
+{
+  char buf[80];
+  error_t err = 0;
+
+#define FOPT(fmt, arg) \
+  do { \
+    if (! err) \
+      { \
+	snprintf (buf, sizeof buf, fmt, arg); \
+	err = argz_add (argz, argz_len, buf); \
+      } \
+  } while (0)
+
+  if (mounted_soft)
+    FOPT ("--soft=%d", soft_retries);
+  else
+    err = argz_add (argz, argz_len, "--hard");
+
+  FOPT ("--read-size=%d", read_size);
+  FOPT ("--write-size=%d", write_size);
+
+  FOPT ("--stat-timeout=%d", stat_timeout);
+  FOPT ("--cache-timeout=%d", cache_timeout);
+  FOPT ("--init-transmit-timeout=%d", initial_transmit_timeout);
+  FOPT ("--max-transmit-timeout=%d", max_transmit_timeout);
+
+  if (err)
+    free (argz);
+
+  return err;
+}
+
 /* Extract the host and remote filesystem names from SPEC, which should use
    either HOST:FS or FS@HOST notation.  Returns the malloced storage into
    which both REMOTE_FS and HOST point, or 0 if SPEC is invalid.  */
@@ -235,7 +297,7 @@ int
 main (int argc, char **argv)
 {
   struct argp common_argp = { common_options, parse_common_opt };
-  const struct argp *argp_parents[] = { &common_argp, 0 };
+  const struct argp *argp_parents[] = { &common_argp, netfs_startup_argp, 0 };
   struct argp argp =
     { startup_options, parse_startup_opt, args_doc, doc, argp_parents };
   mach_port_t bootstrap;