fish: Fix build error if built without readline.

[libguestfs.git] / fish / fish.c

diff --git a/fish/fish.c b/fish/fish.c
index 7dae815..48ba459 100644 (file)
--- a/fish/fish.c
+++ b/fish/fish.c
@@ -28,6 +28,7 @@
 #include <assert.h>
 #include <sys/types.h>
 #include <sys/wait.h>
+#include <locale.h>
 
 #ifdef HAVE_LIBREADLINE
 #include <readline/readline.h>
@@ -60,7 +61,9 @@ static void script (int prompt);
 static void cmdline (char *argv[], int optind, int argc);
 static void initialize_readline (void);
 static void cleanup_readline (void);
+#ifdef HAVE_LIBREADLINE
 static void add_history_line (const char *);
+#endif
 
 /* Currently open libguestfs handle. */
 guestfs_h *g;
@@ -68,10 +71,10 @@ guestfs_h *g;
 int read_only = 0;
 int quit = 0;
 int verbose = 0;
-int echo_commands = 0;
 int remote_control_listen = 0;
 int remote_control = 0;
 int exit_on_error = 1;
+int command_num = 0;
 
 int
 launch (guestfs_h *_g)
@@ -139,6 +142,10 @@ main (int argc, char *argv[])
 
   atexit (close_stdout);
 
+  setlocale (LC_ALL, "");
+  bindtextdomain (PACKAGE, LOCALEBASEDIR);
+  textdomain (PACKAGE);
+
   enum { HELP_OPTION = CHAR_MAX + 1 };
 
   static const char *options = "a:Df:h::im:nrv?Vx";
@@ -318,7 +325,7 @@ main (int argc, char *argv[])
       exit (EXIT_SUCCESS);
 
     case 'x':
-      echo_commands = 1;
+      guestfs_set_trace (g, 1);
       break;
 
     case HELP_OPTION:
@@ -374,6 +381,8 @@ main (int argc, char *argv[])
       strcat (cmd, " -v");
     if (!guestfs_get_autosync (g))
       strcat (cmd, " -n");
+    if (guestfs_get_trace (g))
+      strcat (cmd, " -x");
 
     if (verbose)
       fprintf (stderr,
@@ -470,10 +479,13 @@ mount_mps (struct mp *mp)
 
   if (mp) {
     mount_mps (mp->next);
-    if (!read_only)
-      r = guestfs_mount (g, mp->device, mp->mountpoint);
-    else
-      r = guestfs_mount_ro (g, mp->device, mp->mountpoint);
+
+    /* Don't use guestfs_mount here because that will default to mount
+     * options -o sync,noatime.  For more information, see guestfs(3)
+     * section "LIBGUESTFS GOTCHAS".
+     */
+    const char *options = read_only ? "ro" : "";
+    r = guestfs_mount_options (g, options, mp->device, mp->mountpoint);
     if (r == -1)
       exit (EXIT_FAILURE);
   }
@@ -759,6 +771,15 @@ cmdline (char *argv[], int optind, int argc)
     fprintf (stderr, _("%s: empty command on command line\n"), program_name);
     exit (EXIT_FAILURE);
   }
+
+  /* Allow -cmd on the command line to mean (temporarily) override
+   * the normal exit on error (RHBZ#578407).
+   */
+  if (cmd[0] == '-') {
+    exit_on_error = 0;
+    cmd++;
+  }
+
   params = &argv[optind];
 
   /* Search for end of command list or ":" ... */
@@ -766,10 +787,12 @@ cmdline (char *argv[], int optind, int argc)
     optind++;
 
   if (optind == argc) {
-    if (issue_command (cmd, params, NULL) == -1) exit (EXIT_FAILURE);
+    if (issue_command (cmd, params, NULL) == -1 && exit_on_error)
+        exit (EXIT_FAILURE);
   } else {
     argv[optind] = NULL;
-    if (issue_command (cmd, params, NULL) == -1) exit (EXIT_FAILURE);
+    if (issue_command (cmd, params, NULL) == -1 && exit_on_error)
+      exit (EXIT_FAILURE);
     cmdline (argv, optind+1, argc);
   }
 }
@@ -782,12 +805,8 @@ issue_command (const char *cmd, char *argv[], const char *pipecmd)
   int pid = 0;
   int i, r;
 
-  if (echo_commands) {
-    printf ("%s", cmd);
-    for (i = 0; argv[i] != NULL; ++i)
-      printf (" %s", argv[i]);
-    printf ("\n");
-  }
+  /* This counts the commands issued, starting at 1. */
+  command_num++;
 
   /* For | ... commands.  Annoyingly we can't use popen(3) here. */
   if (pipecmd) {
@@ -1065,6 +1084,21 @@ display_builtin_command (const char *cmd)
              cmd);
 }
 
+/* This is printed when the user types in an unknown command for the
+ * first command issued.  A common case is the user doing:
+ *   guestfish disk.img
+ * expecting guestfish to open 'disk.img' (in fact, this tried to
+ * run a command 'disk.img').
+ */
+void
+extended_help_message (void)
+{
+  fprintf (stderr,
+           _("Did you mean to open a disk image?  guestfish -a disk.img\n"
+             "For a list of commands:             guestfish -h\n"
+             "For complete documentation:         man guestfish\n"));
+}
+
 void
 free_strings (char **argv)
 {
@@ -1297,19 +1331,23 @@ cleanup_readline (void)
     }
     close (fd);
 
+#ifdef HAVE_APPEND_HISTORY
     (void) append_history (nr_history_lines, histfile);
+#else
+    (void) write_history (histfile);
+#endif
   }
 #endif
 }
 
+#ifdef HAVE_LIBREADLINE
 static void
 add_history_line (const char *line)
 {
-#ifdef HAVE_LIBREADLINE
   add_history (line);
   nr_history_lines++;
-#endif
 }
+#endif
 
 int
 xwrite (int fd, const void *v_buf, size_t len)