From: Richard Jones <rjones@trick.home.annexia.org>
Date: Mon, 22 Jun 2009 07:20:32 +0000 (+0100)
Subject: Add 'glob-expand' command.
X-Git-Tag: 1.0.50~3
X-Git-Url: http://git.annexia.org/?a=commitdiff_plain;h=05c34c1c1479bb07b31cfbf912743a8cf014a636;p=libguestfs.git

Add 'glob-expand' command.
---

diff --git a/daemon/Makefile.am b/daemon/Makefile.am
index ea4b721..7ef2a6b 100644
--- a/daemon/Makefile.am
+++ b/daemon/Makefile.am
@@ -36,6 +36,7 @@ guestfsd_SOURCES = \
 	file.c \
 	find.c \
 	fsck.c \
+	glob.c \
 	grub.c \
 	guestfsd.c \
 	hexdump.c \
diff --git a/daemon/glob.c b/daemon/glob.c
new file mode 100644
index 0000000..f39832e
--- /dev/null
+++ b/daemon/glob.c
@@ -0,0 +1,63 @@
+/* libguestfs - the guestfsd daemon
+ * Copyright (C) 2009 Red Hat Inc. 
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <glob.h>
+
+#include "daemon.h"
+#include "actions.h"
+
+char **
+do_glob_expand (char *pattern)
+{
+  int r;
+  glob_t buf;
+
+  NEED_ROOT (NULL);
+  ABS_PATH (pattern, NULL);	/* Required so chroot can be used. */
+
+  /* glob(3) in glibc never calls chdir, so this seems to be safe: */
+  CHROOT_IN;
+  r = glob (pattern, GLOB_MARK|GLOB_BRACE, NULL, &buf);
+  CHROOT_OUT;
+
+  if (r == GLOB_NOMATCH) {	/* Return an empty list instead of an error. */
+    char **rv;
+
+    rv = malloc (sizeof (char *) * 1);
+    rv[0] = NULL;
+    return rv;			/* Caller frees. */
+  }
+
+  if (r != 0) {
+    if (errno != 0)
+      reply_with_perror ("glob: %s", pattern);
+    else
+      reply_with_error ("glob failed: %s", pattern);
+    return NULL;
+  }
+
+  /* We take a bit of a liberty here.  'globfree' just frees the
+   * strings in the glob_t structure.  We will pass them out directly
+   * and the caller will free them.
+   */
+  return buf.gl_pathv;
+}
diff --git a/src/generator.ml b/src/generator.ml
index 64a8ab9..b716e0a 100755
--- a/src/generator.ml
+++ b/src/generator.ml
@@ -2373,6 +2373,34 @@ into a list of lines.
 
 See also: C<guestfs_command_lines>");
 
+  ("glob_expand", (RStringList "paths", [String "pattern"]), 113, [],
+   [InitBasicFS, Always, TestOutputList (
+      [["mkdir_p"; "/a/b/c"];
+       ["touch"; "/a/b/c/d"];
+       ["touch"; "/a/b/c/e"];
+       ["glob_expand"; "/a/b/c/*"]], ["/a/b/c/d"; "/a/b/c/e"]);
+    InitBasicFS, Always, TestOutputList (
+      [["mkdir_p"; "/a/b/c"];
+       ["touch"; "/a/b/c/d"];
+       ["touch"; "/a/b/c/e"];
+       ["glob_expand"; "/a/*/c/*"]], ["/a/b/c/d"; "/a/b/c/e"]);
+    InitBasicFS, Always, TestOutputList (
+      [["mkdir_p"; "/a/b/c"];
+       ["touch"; "/a/b/c/d"];
+       ["touch"; "/a/b/c/e"];
+       ["glob_expand"; "/a/*/x/*"]], [])],
+   "expand a wildcard path",
+   "\
+This command searches for all the pathnames matching
+C<pattern> according to the wildcard expansion rules
+used by the shell.
+
+If no paths match, then this returns an empty list
+(note: not an error).
+
+It is just a wrapper around the C L<glob(3)> function
+with flags C<GLOB_MARK|GLOB_BRACE>.
+See that manual page for more details.");
 
 ]