Implement private data area.

[libguestfs.git] / fuse / guestmount.c

diff --git a/fuse/guestmount.c b/fuse/guestmount.c
index 739d8cb..9b7e520 100644 (file)
--- a/fuse/guestmount.c
+++ b/fuse/guestmount.c
@@ -29,6 +29,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdint.h>
+#include <inttypes.h>
 #include <string.h>
 #include <unistd.h>
 #include <getopt.h>
@@ -40,6 +41,7 @@
 #include <assert.h>
 #include <sys/time.h>
 #include <sys/types.h>
+#include <locale.h>
 
 #include <fuse.h>
 #include <guestfs.h>
@@ -427,7 +429,7 @@ fg_symlink (const char *from, const char *to)
 
   dir_cache_invalidate (to);
 
-  r = guestfs_ln_s (g, to, from);
+  r = guestfs_ln_s (g, from, to);
   if (r == -1)
     return error ();
 
@@ -441,6 +443,7 @@ fg_rename (const char *from, const char *to)
 
   if (read_only) return -EROFS;
 
+  dir_cache_invalidate (from);
   dir_cache_invalidate (to);
 
   /* XXX It's not clear how close the 'mv' command is to the
@@ -461,9 +464,10 @@ fg_link (const char *from, const char *to)
 
   if (read_only) return -EROFS;
 
+  dir_cache_invalidate (from);
   dir_cache_invalidate (to);
 
-  r = guestfs_ln (g, to, from);
+  r = guestfs_ln (g, from, to);
   if (r == -1)
     return error ();
 
@@ -532,14 +536,22 @@ fg_utimens (const char *path, const struct timespec ts[2])
   time_t mtsecs = ts[1].tv_sec;
   long mtnsecs = ts[1].tv_nsec;
 
+#ifdef UTIME_NOW
   if (atnsecs == UTIME_NOW)
     atnsecs = -1;
+#endif
+#ifdef UTIME_OMIT
   if (atnsecs == UTIME_OMIT)
     atnsecs = -2;
+#endif
+#ifdef UTIME_NOW
   if (mtnsecs == UTIME_NOW)
     mtnsecs = -1;
+#endif
+#ifdef UTIME_OMIT
   if (mtnsecs == UTIME_OMIT)
     mtnsecs = -2;
+#endif
 
   r = guestfs_utimens (g, path, atsecs, atnsecs, mtsecs, mtnsecs);
   if (r == -1)
@@ -642,7 +654,17 @@ fg_write (const char *path, const char *buf, size_t size,
 
   dir_cache_invalidate (path);
 
-  return -ENOSYS;               /* XXX */
+  /* See fg_read. */
+  const size_t limit = 2 * 1024 * 1024;
+  if (size > limit)
+    size = limit;
+
+  int r;
+  r = guestfs_pwrite (g, path, buf, size, offset);
+  if (r == -1)
+    return error ();
+
+  return r;
 }
 
 static int
@@ -848,7 +870,7 @@ fuse_help (void)
 {
   const char *tmp_argv[] = { program_name, "--help", NULL };
   fuse_main (2, (char **) tmp_argv, &fg_operations, NULL);
-  exit (0);
+  exit (EXIT_SUCCESS);
 }
 
 static void __attribute__((noreturn))
@@ -886,6 +908,10 @@ usage (int status)
 int
 main (int argc, char *argv[])
 {
+  setlocale (LC_ALL, "");
+  bindtextdomain (PACKAGE, LOCALEBASEDIR);
+  textdomain (PACKAGE);
+
   enum { HELP_OPTION = CHAR_MAX + 1 };
 
   /* The command line arguments are broadly compatible with (a subset
@@ -913,7 +939,7 @@ main (int argc, char *argv[])
   struct mp *mps = NULL;
   struct mp *mp;
   char *p;
-  int c, i, r;
+  int c, r;
   int option_index;
   struct sigaction sa;
 
@@ -926,7 +952,7 @@ main (int argc, char *argv[])
     fuse_argv = realloc (fuse_argv, (1+fuse_argc) * sizeof (char *));   \
     if (!fuse_argv) {                                                   \
       perror ("realloc");                                               \
-      exit (1);                                                         \
+      exit (EXIT_FAILURE);                                                         \
     }                                                                   \
     fuse_argv[fuse_argc-1] = (str);                                     \
     fuse_argv[fuse_argc] = NULL;                                        \
@@ -949,7 +975,7 @@ main (int argc, char *argv[])
   g = guestfs_create ();
   if (g == NULL) {
     fprintf (stderr, _("guestfs_create: failed to create handle\n"));
-    exit (1);
+    exit (EXIT_FAILURE);
   }
 
   guestfs_set_autosync (g, 1);
@@ -995,19 +1021,19 @@ main (int argc, char *argv[])
       else {
         fprintf (stderr, _("%s: unknown long option: %s (%d)\n"),
                  program_name, long_options[option_index].name, option_index);
-        exit (1);
+        exit (EXIT_FAILURE);
       }
       break;
 
     case 'a':
       if (access (optarg, R_OK) != 0) {
         perror (optarg);
-        exit (1);
+        exit (EXIT_FAILURE);
       }
       drv = malloc (sizeof (struct drv));
       if (!drv) {
         perror ("malloc");
-        exit (1);
+        exit (EXIT_FAILURE);
       }
       drv->filename = optarg;
       drv->next = drvs;
@@ -1018,7 +1044,7 @@ main (int argc, char *argv[])
       mp = malloc (sizeof (struct mp));
       if (!mp) {
         perror ("malloc");
-        exit (1);
+        exit (EXIT_FAILURE);
       }
       p = strchr (optarg, ':');
       if (p) {
@@ -1049,15 +1075,18 @@ main (int argc, char *argv[])
       guestfs_set_verbose (g, verbose);
       break;
 
-    case 'V':
-      printf ("%s %s\n", program_name, PACKAGE_VERSION);
-      exit (0);
+    case 'V': {
+      struct guestfs_version *v = guestfs_version (g);
+      printf ("%s %"PRIi64".%"PRIi64".%"PRIi64"%s\n", program_name,
+              v->major, v->minor, v->release, v->extra);
+      exit (EXIT_SUCCESS);
+    }
 
     case HELP_OPTION:
-      usage (0);
+      usage (EXIT_SUCCESS);
 
     default:
-      usage (1);
+      usage (EXIT_FAILURE);
     }
   }
 
@@ -1066,7 +1095,7 @@ main (int argc, char *argv[])
     fprintf (stderr,
              _("%s: must have at least one -a and at least one -m option\n"),
              program_name);
-    exit (1);
+    exit (EXIT_FAILURE);
   }
 
   /* We'd better have a mountpoint. */
@@ -1074,18 +1103,18 @@ main (int argc, char *argv[])
     fprintf (stderr,
              _("%s: you must specify a mountpoint in the host filesystem\n"),
              program_name);
-    exit (1);
+    exit (EXIT_FAILURE);
   }
 
   /* Do the guest drives and mountpoints. */
   add_drives (drvs);
   if (guestfs_launch (g) == -1)
-    exit (1);
+    exit (EXIT_FAILURE);
   mount_mps (mps);
 
   /* FUSE example does this, not clear if it's necessary, but ... */
   if (guestfs_umask (g, 0) == -1)
-    exit (1);
+    exit (EXIT_FAILURE);
 
   /* At the last minute, remove the libguestfs error handler.  In code
    * above this point, the default error handler has been used which
@@ -1134,7 +1163,7 @@ add_drives (struct drv *drv)
     else
       r = guestfs_add_drive_ro (g, drv->filename);
     if (r == -1)
-      exit (1);
+      exit (EXIT_FAILURE);
   }
 }
 
@@ -1146,11 +1175,14 @@ 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 (1);
+      exit (EXIT_FAILURE);
   }
 }