Fix for hurd

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

diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index 3ca36377a2095b2008fc27f70d251652084b850e..6baafcfcfbf6d3084f84d7168cca812ce7433c43 100644 (file)
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/
-// $Id: fileutl.cc,v 1.14 1998/11/23 07:03:06 jgg Exp $
+// $Id: fileutl.cc,v 1.18 1999/02/03 23:13:37 jgg Exp $
 /* ######################################################################
    
    File Utilities
@@ -68,10 +68,10 @@ int GetLock(string File,bool Errors)
    
    // Aquire a write lock
    struct flock fl;
-   fl.l_type= F_WRLCK;
-   fl.l_whence= SEEK_SET;
-   fl.l_start= 0;
-   fl.l_len= 1;
+   fl.l_type = F_WRLCK;
+   fl.l_whence = SEEK_SET;
+   fl.l_start = 0;
+   fl.l_len = 0;
    if (fcntl(FD,F_SETLK,&fl) == -1)
    {
       if (Errors == true)
@@ -102,8 +102,11 @@ string SafeGetCWD()
    // Stash the current dir.
    char S[300];
    S[0] = 0;
-   if (getcwd(S,sizeof(S)) == 0)
+   if (getcwd(S,sizeof(S)-2) == 0)
       return "/";
+   unsigned int Len = strlen(S);
+   S[Len] = '/';
+   S[Len+1] = 0;
    return S;
 }
                                                                        /*}}}*/
@@ -186,9 +189,13 @@ FileFd::FileFd(string FileName,OpenMode Mode, unsigned long Perms)
       break;
       
       case WriteEmpty:
-      unlink(FileName.c_str());
-      iFd = open(FileName.c_str(),O_RDWR | O_CREAT | O_EXCL,Perms);
-      break;
+      {
+        struct stat Buf;
+        if (stat(FileName.c_str(),&Buf) == 0 && S_ISLNK(Buf.st_mode))
+           unlink(FileName.c_str());
+        iFd = open(FileName.c_str(),O_RDWR | O_CREAT | O_TRUNC,Perms);
+        break;
+      }
       
       case WriteExists:
       iFd = open(FileName.c_str(),O_RDWR);
@@ -234,7 +241,7 @@ bool FileFd::Read(void *To,unsigned long Size)
 // FileFd::Write - Write to the file                                   /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool FileFd::Write(void *From,unsigned long Size)
+bool FileFd::Write(const void *From,unsigned long Size)
 {
    if (write(iFd,From,Size) != (signed)Size)
    {
@@ -259,6 +266,17 @@ bool FileFd::Seek(unsigned long To)
    return true;
 }
                                                                        /*}}}*/
+// FileFd::Tell - Current seek position                                        /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+unsigned long FileFd::Tell()
+{
+   off_t Res = lseek(iFd,0,SEEK_CUR);
+   if (Res == (off_t)-1)
+      _error->Errno("lseek","Failed to determine the current file position");
+   return Res;
+}
+                                                                       /*}}}*/
 // FileFd::Size - Return the size of the file                          /*{{{*/
 // ---------------------------------------------------------------------
 /* */