Bug#448316: apt does not work in initramfs

[Amos Waterland <apw@us.ibm.com>]

Here is a patch that I have tested successfully.

--- cmdline/apt-get.cc.orig	2007-11-26 02:46:17.000000000 +0000
+++ cmdline/apt-get.cc	2007-11-26 02:56:53.000000000 +0000
@@ -53,6 +53,7 @@
 #include <termios.h>
 #include <sys/ioctl.h>
 #include <sys/stat.h>
+#include <sys/statfs.h>
 #include <sys/statvfs.h>
 #include <signal.h>
 #include <unistd.h>
@@ -62,6 +63,8 @@
 #include <sys/wait.h>
 									/*}}}*/
 
+#define RAMFS_MAGIC     0x858458f6
+
 using namespace std;
 
 ostream c0out(0);
@@ -846,8 +849,13 @@
 	 return _error->Errno("statvfs",_("Couldn't determine free space in %s"),
 			      OutputDir.c_str());
       if (unsigned(Buf.f_bfree) < (FetchBytes - FetchPBytes)/Buf.f_bsize)
-	 return _error->Error(_("You don't have enough free space in %s."),
-			      OutputDir.c_str());
+      {
+         struct statfs Stat;
+         if (statfs(OutputDir.c_str(),&Stat) != 0 || 
+             unsigned(Stat.f_type) != RAMFS_MAGIC) 
+	   return _error->Error(_("You don't have enough free space in %s."),
+	  		        OutputDir.c_str());
+      }
    }
    
    // Fail safe check
@@ -1989,8 +1997,13 @@
       return _error->Errno("statvfs",_("Couldn't determine free space in %s"),
 			   OutputDir.c_str());
    if (unsigned(Buf.f_bfree) < (FetchBytes - FetchPBytes)/Buf.f_bsize)
-      return _error->Error(_("You don't have enough free space in %s"),
-			   OutputDir.c_str());
+     {
+       struct statfs Stat;
+       if (statfs(OutputDir.c_str(),&Stat) != 0 || 
+           unsigned(Stat.f_type) != RAMFS_MAGIC) 
+         return _error->Error(_("You don't have enough free space in %s"),
+                              OutputDir.c_str());
+      }
    
    // Number of bytes
    if (DebBytes != FetchBytes)