* merged changes from Kamions upload (thanks!)

[apt.git] / apt-pkg / contrib / cdromutl.cc

diff --git a/apt-pkg/contrib/cdromutl.cc b/apt-pkg/contrib/cdromutl.cc
index c249705536a8e47f9984a75319c6986d972ccaa6..ab170ec5a8b0c17f2c3bfae51ea9542201fd9d4e 100644 (file)
--- a/apt-pkg/contrib/cdromutl.cc
+++ b/apt-pkg/contrib/cdromutl.cc
@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/
-// $Id: cdromutl.cc,v 1.3 1999/04/03 01:05:24 jgg Exp $
+// $Id: cdromutl.cc,v 1.12 2001/02/20 07:03:17 jgg Exp $
 /* ######################################################################
    
    CDROM Utilities - Some functions to manipulate CDROM mounts.
@@ -19,9 +19,11 @@
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/configuration.h>
 
+#include <apti18n.h>
+    
 #include <sys/wait.h>
 #include <sys/errno.h>
-#include <sys/vfs.h>
+#include <sys/statvfs.h>
 #include <dirent.h>
 #include <fcntl.h>
 #include <sys/stat.h>
@@ -50,7 +52,7 @@ bool IsMounted(string &Path)
    struct stat Buf,Buf2;
    if (stat(Path.c_str(),&Buf) != 0 || 
        stat((Path + "../").c_str(),&Buf2) != 0)
-      return _error->Errno("stat","Unable to stat the mount point %s",Path.c_str());
+      return _error->Errno("stat",_("Unable to stat the mount point %s"),Path.c_str());
 
    if (Buf.st_dev == Buf2.st_dev)
       return false;
@@ -66,16 +68,12 @@ bool UnmountCdrom(string Path)
    if (IsMounted(Path) == false)
       return true;
    
-   int Child = fork();
-   if (Child < -1)
-      return _error->Errno("fork","Failed to fork");
+   int Child = ExecFork();
 
    // The child
    if (Child == 0)
    {
       // Make all the fds /dev/null
-      for (int I = 0; I != 10; I++)
-        close(I);
       for (int I = 0; I != 3; I++)
         dup2(open("/dev/null",O_RDWR),I);
 
@@ -97,18 +95,7 @@ bool UnmountCdrom(string Path)
    }
 
    // Wait for mount
-   int Status = 0;
-   while (waitpid(Child,&Status,0) != Child)
-   {
-      if (errno == EINTR)
-        continue;
-      return _error->Errno("waitpid","Couldn't wait for subprocess");
-   }
-   
-   // Check for an error code.
-   if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
-      return false;
-   return true;
+   return ExecWait(Child,"umount",true);
 }
                                                                        /*}}}*/
 // MountCdrom - Mount a cdrom                                          /*{{{*/
@@ -119,16 +106,12 @@ bool MountCdrom(string Path)
    if (IsMounted(Path) == true)
       return true;
    
-   int Child = fork();
-   if (Child < -1)
-      return _error->Errno("fork","Failed to fork");
+   int Child = ExecFork();
 
    // The child
    if (Child == 0)
    {
       // Make all the fds /dev/null
-      for (int I = 0; I != 10; I++)
-        close(I);      
       for (int I = 0; I != 3; I++)
         dup2(open("/dev/null",O_RDWR),I);
       
@@ -150,35 +133,24 @@ bool MountCdrom(string Path)
    }
 
    // Wait for mount
-   int Status = 0;
-   while (waitpid(Child,&Status,0) != Child)
-   {
-      if (errno == EINTR)
-        continue;
-      return _error->Errno("waitpid","Couldn't wait for subprocess");
-   }
-   
-   // Check for an error code.
-   if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
-      return false;
-   return true;
+   return ExecWait(Child,"mount",true);
 }
                                                                        /*}}}*/
 // IdentCdrom - Generate a unique string for this CD                   /*{{{*/
 // ---------------------------------------------------------------------
 /* We convert everything we hash into a string, this prevents byte size/order
    from effecting the outcome. */
-bool IdentCdrom(string CD,string &Res)
+bool IdentCdrom(string CD,string &Res,unsigned int Version)
 {
    MD5Summation Hash;
 
    string StartDir = SafeGetCWD();
    if (chdir(CD.c_str()) != 0)
-      return _error->Errno("chdir","Unable to change to %s",CD.c_str());
+      return _error->Errno("chdir",_("Unable to change to %s"),CD.c_str());
    
    DIR *D = opendir(".");
    if (D == 0)
-      return _error->Errno("opendir","Unable to read %s",CD.c_str());
+      return _error->Errno("opendir",_("Unable to read %s"),CD.c_str());
       
    /* Run over the directory, we assume that the reader order will never
       change as the media is read-only. In theory if the kernel did
@@ -190,8 +162,19 @@ bool IdentCdrom(string CD,string &Res)
       if (strcmp(Dir->d_name,".") == 0 ||
          strcmp(Dir->d_name,"..") == 0)
         continue;
-   
-      sprintf(S,"%lu",Dir->d_ino);
+
+      if (Version <= 1)
+      {
+        sprintf(S,"%lu",(unsigned long)Dir->d_ino);
+      }
+      else
+      {
+        struct stat Buf;
+        if (stat(Dir->d_name,&Buf) != 0)
+           continue;
+        sprintf(S,"%lu",(unsigned long)Buf.st_mtime);
+      }
+      
       Hash.Add(S);
       Hash.Add(Dir->d_name);
    };
@@ -200,16 +183,22 @@ bool IdentCdrom(string CD,string &Res)
    closedir(D);
    
    // Some stats from the fsys
-   struct statfs Buf;
-   if (statfs(CD.c_str(),&Buf) != 0)
-      return _error->Errno("statfs","Failed to stat the cdrom");
-
-   // We use a kilobyte block size to advoid overflow
-   sprintf(S,"%u %u",Buf.f_blocks*(Buf.f_bsize/1024),
-          Buf.f_bfree*(Buf.f_bsize/1024));
-   Hash.Add(S);
+   if (_config->FindB("Debug::identcdrom",false) == false)
+   {
+      struct statvfs Buf;
+      if (statvfs(CD.c_str(),&Buf) != 0)
+        return _error->Errno("statfs",_("Failed to stat the cdrom"));
+      
+      // We use a kilobyte block size to advoid overflow
+      sprintf(S,"%lu %lu",(long)(Buf.f_blocks*(Buf.f_bsize/1024)),
+             (long)(Buf.f_bfree*(Buf.f_bsize/1024)));
+      Hash.Add(S);
+      sprintf(S,"-%u",Version);
+   }
+   else
+      sprintf(S,"-%u.debug",Version);
    
-   Res = Hash.Result().Value();
+   Res = Hash.Result().Value() + S;
    return true;   
 }
                                                                        /*}}}*/