/*}}}*/
// Include Files /*{{{*/
#define _BSD_SOURCE
+#include <config.h>
+
#include <apt-pkg/mmap.h>
#include <apt-pkg/error.h>
-
-#include <apti18n.h>
+#include <apt-pkg/fileutl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>
#include <errno.h>
-
#include <cstring>
- /*}}}*/
+
+#include <apti18n.h>
+ /*}}}*/
// MMap::MMap - Constructor /*{{{*/
// ---------------------------------------------------------------------
bool MMap::Map(FileFd &Fd)
{
iSize = Fd.Size();
-
+
// Set the permissions.
int Prot = PROT_READ;
int Map = MAP_SHARED;
if (iSize == 0)
return _error->Error(_("Can't mmap an empty file"));
-
+
+ // We can't mmap compressed fd's directly, so we need to read it completely
+ if (Fd.IsCompressed() == true)
+ {
+ if ((Flags & ReadOnly) != ReadOnly)
+ return _error->Error("Compressed file %s can only be mapped readonly", Fd.Name().c_str());
+ Base = new unsigned char[iSize];
+ if (Fd.Seek(0L) == false || Fd.Read(Base, iSize) == false)
+ return _error->Error("Compressed file %s can't be read into mmap", Fd.Name().c_str());
+ return true;
+ }
+
// Map it.
Base = mmap(0,iSize,Prot,Map,Fd.Fd(),0);
if (Base == (void *)-1)
{
// The filesystem doesn't support this particular kind of mmap.
// So we allocate a buffer and read the whole file into it.
+ if ((Flags & ReadOnly) == ReadOnly)
+ {
+ // for readonly, we don't need sync, so make it simple
+ Base = new unsigned char[iSize];
+ return Fd.Read(Base, iSize);
+ }
+ // FIXME: Writing to compressed fd's ?
int const dupped_fd = dup(Fd.Fd());
if (dupped_fd == -1)
return _error->Errno("mmap", _("Couldn't duplicate file descriptor %i"), Fd.Fd());
return false;
}
else
- return _error->Errno("mmap",_("Couldn't make mmap of %lu bytes"),
+ return _error->Errno("mmap",_("Couldn't make mmap of %llu bytes"),
iSize);
}
return true;
#ifdef _POSIX_SYNCHRONIZED_IO
- unsigned long PSize = sysconf(_SC_PAGESIZE);
+ unsigned long long PSize = sysconf(_SC_PAGESIZE);
if ((Flags & ReadOnly) != ReadOnly)
{
if (SyncToFd != 0)
}
else
{
- if (msync((char *)Base+(int)(Start/PSize)*PSize,Stop - Start,MS_SYNC) < 0)
+ if (msync((char *)Base+(unsigned long long)(Start/PSize)*PSize,Stop - Start,MS_SYNC) < 0)
return _error->Errno("msync", _("Unable to synchronize mmap"));
}
}
if (_error->PendingError() == true)
return;
- unsigned long EndOfFile = Fd->Size();
+ unsigned long long EndOfFile = Fd->Size();
if (EndOfFile > WorkSpace)
WorkSpace = EndOfFile;
else if(WorkSpace > 0)
if ((this->Flags & Fallback) != Fallback) {
// Set the permissions.
int Prot = PROT_READ;
+#ifdef MAP_ANONYMOUS
int Map = MAP_PRIVATE | MAP_ANONYMOUS;
+#else
+ int Map = MAP_PRIVATE | MAP_ANON;
+#endif
if ((this->Flags & ReadOnly) != ReadOnly)
Prot |= PROT_WRITE;
if ((this->Flags & Public) == Public)
+#ifdef MAP_ANONYMOUS
Map = MAP_SHARED | MAP_ANONYMOUS;
+#else
+ Map = MAP_SHARED | MAP_ANON;
+#endif
// use anonymous mmap() to get the memory
Base = (unsigned char*) mmap(0, WorkSpace, Prot, Map, -1, 0);
return;
}
- unsigned long EndOfFile = iSize;
+ unsigned long long EndOfFile = iSize;
iSize = WorkSpace;
Close(false);
if(ftruncate(Fd->Fd(),EndOfFile) < 0)
// DynamicMMap::RawAllocate - Allocate a raw chunk of unaligned space /*{{{*/
// ---------------------------------------------------------------------
/* This allocates a block of memory aligned to the given size */
-unsigned long DynamicMMap::RawAllocate(unsigned long Size,unsigned long Aln)
+unsigned long DynamicMMap::RawAllocate(unsigned long long Size,unsigned long Aln)
{
- unsigned long Result = iSize;
+ unsigned long long Result = iSize;
if (Aln != 0)
Result += Aln - (iSize%Aln);
if (GrowFactor <= 0)
return _error->Error(_("Unable to increase size of the MMap as automatic growing is disabled by user."));
- unsigned long const newSize = WorkSpace + GrowFactor;
+ unsigned long long const newSize = WorkSpace + GrowFactor;
if(Fd != 0) {
Fd->Seek(newSize - 1);