Messo dentro un programma statico per dei controlli. Esegue un chroot e poi

un ls "a mano".

diff --git a/sources/Makefile b/sources/Makefile
index 74f0b70202fbd90341f4c2882c0f2d7f788753b4..d8fa60ed7658eab29ea4ca3dc7e1f5c32d698724 100644 (file)
--- a/sources/Makefile
+++ b/sources/Makefile
@@ -31,6 +31,9 @@ readmon: ReadMonitor.c
 myls: myls.c  
        $(CC) $(CFLAGJ) $^ -o $@
 
+mylschroot: mylschroot.c  
+       $(CC) --static  $^ DirScan.o -o $@
+
 flock: Flock.c
        $(CC) $^ -o $@ 
 

diff --git a/sources/mylschroot.c b/sources/mylschroot.c
new file mode 100644 (file)
index 0000000..9d4d705
--- /dev/null
+++ b/sources/mylschroot.c
@@ -0,0 +1,107 @@
+/* mylschroot.c
+ * 
+ * Copyright (C) 2005 Simone Piccardi
+ * 
+ * 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.
+ */
+/*****************************************************************************
+ *
+ * File myls.c: An example ls done after a chroot
+ *
+ * Author: S. Piccardi Mar. 2005
+ *
+ * $Id$
+ *
+ *****************************************************************************/
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>        /* directory */
+#include <stdlib.h>        /* C standard library */
+#include <unistd.h>
+
+#include "Gapil.h"
+/*
+ * Program myls
+ *
+ * List files and their size inside a given directory
+ */
+/* Help printing routine */
+void usage(void);
+/* computation function for DirScan */
+int do_ls(struct dirent * direntry);
+
+int main(int argc, char *argv[]) 
+{
+    int i;
+    /*
+     * Input section: decode command line parameters 
+     * Use getopt function
+     */
+    opterr = 0;         /* don't want writing to stderr */
+    while ( (i = getopt(argc, argv, "hs:l:wrbf")) != -1) {
+       switch (i) {
+       /* 
+        * Handling options 
+        */ 
+       case 'h':                                            /* help option */
+           printf("Wrong -h option use\n");
+           usage();
+           return -1;
+           break;
+       case '?':                                    /* unrecognized options */
+           printf("Unrecognized options -%c\n",optopt);
+           usage();
+       default:                                       /* should not reached */
+           usage();
+       }
+    }
+    /* ***********************************************************
+     * 
+     *          Options processing completed
+     *
+     *               Main code beginning
+     * 
+     * ***********************************************************/
+    if ((argc - optind) != 1) {          /* There must be remaing parameters */
+       printf("Wrong number of arguments %d\n", argc - optind);
+        usage();
+    }
+    printf("Chrooting to %s\n", argv[1]);
+    if (chroot(argv[1])) {
+       perror("Chroot fail");
+    }
+    DirScan("/", do_ls);
+    exit(0);
+}
+/*
+ * Routine to print file name and size inside DirScan
+ */
+int do_ls(struct dirent * direntry) 
+{
+    struct stat data;
+    stat(direntry->d_name, &data);                          /* get stat data */
+    printf("File: %s \t inode: %d\n", direntry->d_name, data.st_ino);
+    return 0;
+}
+/*
+ * routine to print usage info and exit
+ */
+void usage(void) {
+    printf("Program myls: list file in a directory \n");
+    printf("Usage:\n");
+    printf("  myls [-h] dirname \n");
+    printf("  -h          print this help\n");
+    exit(1);
+}