Add qemu 2.4.0

[kvmfornfv.git] / qemu / dtc / fstree.c

diff --git a/qemu/dtc/fstree.c b/qemu/dtc/fstree.c
new file mode 100644 (file)
index 0000000..f377453
--- /dev/null
+++ b/qemu/dtc/fstree.c
@@ -0,0 +1,91 @@
+/*
+ * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
+ *
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307
+ *                                                                   USA
+ */
+
+#include "dtc.h"
+
+#include <dirent.h>
+#include <sys/stat.h>
+
+static struct node *read_fstree(const char *dirname)
+{
+       DIR *d;
+       struct dirent *de;
+       struct stat st;
+       struct node *tree;
+
+       d = opendir(dirname);
+       if (!d)
+               die("Couldn't opendir() \"%s\": %s\n", dirname, strerror(errno));
+
+       tree = build_node(NULL, NULL);
+
+       while ((de = readdir(d)) != NULL) {
+               char *tmpnam;
+
+               if (streq(de->d_name, ".")
+                   || streq(de->d_name, ".."))
+                       continue;
+
+               tmpnam = join_path(dirname, de->d_name);
+
+               if (lstat(tmpnam, &st) < 0)
+                       die("stat(%s): %s\n", tmpnam, strerror(errno));
+
+               if (S_ISREG(st.st_mode)) {
+                       struct property *prop;
+                       FILE *pfile;
+
+                       pfile = fopen(tmpnam, "r");
+                       if (! pfile) {
+                               fprintf(stderr,
+                                       "WARNING: Cannot open %s: %s\n",
+                                       tmpnam, strerror(errno));
+                       } else {
+                               prop = build_property(xstrdup(de->d_name),
+                                                     data_copy_file(pfile,
+                                                                    st.st_size));
+                               add_property(tree, prop);
+                               fclose(pfile);
+                       }
+               } else if (S_ISDIR(st.st_mode)) {
+                       struct node *newchild;
+
+                       newchild = read_fstree(tmpnam);
+                       newchild = name_node(newchild, xstrdup(de->d_name));
+                       add_child(tree, newchild);
+               }
+
+               free(tmpnam);
+       }
+
+       closedir(d);
+       return tree;
+}
+
+struct boot_info *dt_from_fs(const char *dirname)
+{
+       struct node *tree;
+
+       tree = read_fstree(dirname);
+       tree = name_node(tree, "");
+
+       return build_boot_info(NULL, tree, guess_boot_cpuid(tree));
+}
+