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-rw-r--r--ftparchive/multicompress.cc140
1 files changed, 13 insertions, 127 deletions
diff --git a/ftparchive/multicompress.cc b/ftparchive/multicompress.cc
index bf0f858d9..1fea589e2 100644
--- a/ftparchive/multicompress.cc
+++ b/ftparchive/multicompress.cc
@@ -16,6 +16,7 @@
// Include Files /*{{{*/
#include <config.h>
+#include <apt-pkg/fileutl.h>
#include <apt-pkg/strutl.h>
#include <apt-pkg/error.h>
#include <apt-pkg/md5.h>
@@ -90,7 +91,7 @@ MultiCompress::MultiCompress(string const &Output,string const &Compress,
/* Open all the temp files now so we can report any errors. File is
made unreable to prevent people from touching it during creating. */
for (Files *I = Outputs; I != 0; I = I->Next)
- I->TmpFile.Open(I->Output + ".new",FileFd::WriteEmpty,0600);
+ I->TmpFile.Open(I->Output + ".new", FileFd::WriteOnly | FileFd::Create | FileFd::Empty, FileFd::Extension, 0600);
if (_error->PendingError() == true)
return;
@@ -182,11 +183,6 @@ bool MultiCompress::Start()
_exit(0);
};
- /* Tidy up the temp files, we open them in the constructor so as to
- get proper error reporting. Close them now. */
- for (Files *I = Outputs; I != 0; I = I->Next)
- I->TmpFile.Close();
-
close(Pipe[0]);
Input = fdopen(Pipe[1],"w");
if (Input == 0)
@@ -261,77 +257,10 @@ bool MultiCompress::Finalize(unsigned long long &OutSize)
return true;
}
/*}}}*/
-// MultiCompress::OpenCompress - Open the compressor /*{{{*/
-// ---------------------------------------------------------------------
-/* This opens the compressor, either in compress mode or decompress
- mode. FileFd is always the compressor input/output file,
- OutFd is the created pipe, Input for Compress, Output for Decompress. */
-bool MultiCompress::OpenCompress(APT::Configuration::Compressor const &Prog,
- pid_t &Pid,int const &FileFd,int &OutFd,bool const &Comp)
-{
- Pid = -1;
-
- // No compression
- if (Prog.Binary.empty() == true)
- {
- OutFd = dup(FileFd);
- return true;
- }
-
- // Create a data pipe
- int Pipe[2] = {-1,-1};
- if (pipe(Pipe) != 0)
- return _error->Errno("pipe",_("Failed to create subprocess IPC"));
- for (int J = 0; J != 2; J++)
- SetCloseExec(Pipe[J],true);
-
- if (Comp == true)
- OutFd = Pipe[1];
- else
- OutFd = Pipe[0];
-
- // The child..
- Pid = ExecFork();
- if (Pid == 0)
- {
- if (Comp == true)
- {
- dup2(FileFd,STDOUT_FILENO);
- dup2(Pipe[0],STDIN_FILENO);
- }
- else
- {
- dup2(FileFd,STDIN_FILENO);
- dup2(Pipe[1],STDOUT_FILENO);
- }
-
- SetCloseExec(STDOUT_FILENO,false);
- SetCloseExec(STDIN_FILENO,false);
-
- std::vector<char const*> Args;
- Args.push_back(Prog.Binary.c_str());
- std::vector<std::string> const * const addArgs =
- (Comp == true) ? &(Prog.CompressArgs) : &(Prog.UncompressArgs);
- for (std::vector<std::string>::const_iterator a = addArgs->begin();
- a != addArgs->end(); ++a)
- Args.push_back(a->c_str());
- Args.push_back(NULL);
-
- execvp(Args[0],(char **)&Args[0]);
- cerr << _("Failed to exec compressor ") << Args[0] << endl;
- _exit(100);
- };
- if (Comp == true)
- close(Pipe[0]);
- else
- close(Pipe[1]);
- return true;
-}
- /*}}}*/
// MultiCompress::OpenOld - Open an old file /*{{{*/
// ---------------------------------------------------------------------
/* This opens one of the original output files, possibly decompressing it. */
-bool MultiCompress::OpenOld(int &Fd,pid_t &Proc)
+bool MultiCompress::OpenOld(FileFd &Fd)
{
Files *Best = Outputs;
for (Files *I = Outputs; I != 0; I = I->Next)
@@ -339,29 +268,9 @@ bool MultiCompress::OpenOld(int &Fd,pid_t &Proc)
Best = I;
// Open the file
- FileFd F(Best->Output,FileFd::ReadOnly);
- if (_error->PendingError() == true)
- return false;
-
- // Decompress the file so we can read it
- if (OpenCompress(Best->CompressProg,Proc,F.Fd(),Fd,false) == false)
- return false;
-
- return true;
+ return Fd.Open(Best->Output, FileFd::ReadOnly, FileFd::Extension);
}
/*}}}*/
-// MultiCompress::CloseOld - Close the old file /*{{{*/
-// ---------------------------------------------------------------------
-/* */
-bool MultiCompress::CloseOld(int Fd,pid_t Proc)
-{
- close(Fd);
- if (Proc != -1)
- if (ExecWait(Proc,_("decompressor"),false) == false)
- return false;
- return true;
-}
- /*}}}*/
// MultiCompress::Child - The writer child /*{{{*/
// ---------------------------------------------------------------------
/* The child process forks a bunch of compression children and takes
@@ -371,14 +280,6 @@ bool MultiCompress::CloseOld(int Fd,pid_t Proc)
is new then the temp files are renamed, otherwise they are erased. */
bool MultiCompress::Child(int const &FD)
{
- // Start the compression children.
- for (Files *I = Outputs; I != 0; I = I->Next)
- {
- if (OpenCompress(I->CompressProg,I->CompressProc,I->TmpFile.Fd(),
- I->Fd,true) == false)
- return false;
- }
-
/* Okay, now we just feed data from FD to all the other FDs. Also
stash a hash of the data to use later. */
SetNonBlock(FD,false);
@@ -398,25 +299,14 @@ bool MultiCompress::Child(int const &FD)
FileSize += Res;
for (Files *I = Outputs; I != 0; I = I->Next)
{
- if (write(I->Fd,Buffer,Res) != Res)
+ if (I->TmpFile.Write(Buffer, Res) == false)
{
_error->Errno("write",_("IO to subprocess/file failed"));
break;
}
}
}
-
- // Close all the writers
- for (Files *I = Outputs; I != 0; I = I->Next)
- close(I->Fd);
-
- // Wait for the compressors to exit
- for (Files *I = Outputs; I != 0; I = I->Next)
- {
- if (I->CompressProc != -1)
- ExecWait(I->CompressProc, I->CompressProg.Binary.c_str(), false);
- }
-
+
if (_error->PendingError() == true)
return false;
@@ -435,31 +325,27 @@ bool MultiCompress::Child(int const &FD)
// Check the MD5 of the lowest cost entity.
while (Missing == false)
{
- int CompFd = -1;
- pid_t Proc = -1;
- if (OpenOld(CompFd,Proc) == false)
+ FileFd CompFd;
+ if (OpenOld(CompFd) == false)
{
_error->Discard();
break;
}
-
+
// Compute the hash
MD5Summation OldMD5;
unsigned long long NewFileSize = 0;
while (1)
{
- int Res = read(CompFd,Buffer,sizeof(Buffer));
+ unsigned long long Res = 0;
+ if (CompFd.Read(Buffer,sizeof(Buffer), &Res) == false)
+ return _error->Errno("read",_("Failed to read while computing MD5"));
if (Res == 0)
break;
- if (Res < 0)
- return _error->Errno("read",_("Failed to read while computing MD5"));
NewFileSize += Res;
OldMD5.Add(Buffer,Res);
}
-
- // Tidy the compressor
- if (CloseOld(CompFd,Proc) == false)
- return false;
+ CompFd.Close();
// Check the hash
if (OldMD5.Result() == MD5.Result() &&
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-04 12:29:23 +0000