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-rw-r--r--apt-pkg/contrib/fileutl.cc49
1 files changed, 46 insertions, 3 deletions
diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index 4dc087983..7a24b6bb0 100644
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -1065,7 +1065,10 @@ bool FileFd::OpenInternDescriptor(unsigned int const Mode, APT::Configuration::C
ExecWait(d->compressor_pid, "FileFdCompressor", true);
if ((Mode & ReadWrite) == ReadWrite)
+ {
+ Flags |= Fail;
return _error->Error("ReadWrite mode is not supported for file %s", FileName.c_str());
+ }
bool const Comp = (Mode & WriteOnly) == WriteOnly;
if (Comp == false)
@@ -1088,7 +1091,10 @@ bool FileFd::OpenInternDescriptor(unsigned int const Mode, APT::Configuration::C
// Create a data pipe
int Pipe[2] = {-1,-1};
if (pipe(Pipe) != 0)
+ {
+ Flags |= Fail;
return _error->Errno("pipe",_("Failed to create subprocess IPC"));
+ }
for (int J = 0; J != 2; J++)
SetCloseExec(Pipe[J],true);
@@ -1367,7 +1373,10 @@ bool FileFd::Seek(unsigned long long To)
return Skip(To - seekpos);
if ((d->openmode & ReadOnly) != ReadOnly)
+ {
+ Flags |= Fail;
return _error->Error("Reopen is only implemented for read-only files!");
+ }
#ifdef HAVE_BZ2
if (d->bz2 != NULL)
BZ2_bzclose(d->bz2);
@@ -1385,11 +1394,17 @@ bool FileFd::Seek(unsigned long long To)
if (lseek(d->compressed_fd, 0, SEEK_SET) != 0)
iFd = d->compressed_fd;
if (iFd <= 0)
+ {
+ Flags |= Fail;
return _error->Error("Reopen is not implemented for pipes opened with FileFd::OpenDescriptor()!");
+ }
}
if (OpenInternDescriptor(d->openmode, d->compressor) == false)
+ {
+ Flags |= Fail;
return _error->Error("Seek on file %s because it couldn't be reopened", FileName.c_str());
+ }
if (To != 0)
return Skip(To);
@@ -1431,7 +1446,10 @@ bool FileFd::Skip(unsigned long long Over)
{
unsigned long long toread = std::min((unsigned long long) sizeof(buffer), Over);
if (Read(buffer, toread) == false)
+ {
+ Flags |= Fail;
return _error->Error("Unable to seek ahead %llu",Over);
+ }
Over -= toread;
}
return true;
@@ -1499,7 +1517,10 @@ unsigned long long FileFd::Tell()
#endif
Res = lseek(iFd,0,SEEK_CUR);
if (Res == (off_t)-1)
+ {
+ Flags |= Fail;
_error->Errno("lseek","Failed to determine the current file position");
+ }
d->seekpos = Res;
return Res;
}
@@ -1511,7 +1532,10 @@ unsigned long long FileFd::FileSize()
{
struct stat Buf;
if (d->pipe == false && fstat(iFd,&Buf) != 0)
+ {
+ Flags |= Fail;
return _error->Errno("fstat","Unable to determine the file size");
+ }
// for compressor pipes st_size is undefined and at 'best' zero
if (d->pipe == true || S_ISFIFO(Buf.st_mode))
@@ -1520,7 +1544,10 @@ unsigned long long FileFd::FileSize()
// in theory the Open-methods should take care of it already
d->pipe = true;
if (stat(FileName.c_str(), &Buf) != 0)
+ {
+ Flags |= Fail;
return _error->Errno("stat","Unable to determine the file size");
+ }
}
return Buf.st_size;
@@ -1562,10 +1589,16 @@ unsigned long long FileFd::Size()
* bits of the file */
// FIXME: Size for gz-files is limited by 32bit… no largefile support
if (lseek(iFd, -4, SEEK_END) < 0)
- return _error->Errno("lseek","Unable to seek to end of gzipped file");
+ {
+ Flags |= Fail;
+ return _error->Errno("lseek","Unable to seek to end of gzipped file");
+ }
size = 0L;
if (read(iFd, &size, 4) != 4)
- return _error->Errno("read","Unable to read original size of gzipped file");
+ {
+ Flags |= Fail;
+ return _error->Errno("read","Unable to read original size of gzipped file");
+ }
#ifdef WORDS_BIGENDIAN
uint32_t tmp_size = size;
@@ -1575,7 +1608,10 @@ unsigned long long FileFd::Size()
#endif
if (lseek(iFd, oldPos, SEEK_SET) < 0)
- return _error->Errno("lseek","Unable to seek in gzipped file");
+ {
+ Flags |= Fail;
+ return _error->Errno("lseek","Unable to seek in gzipped file");
+ }
return size;
}
@@ -1592,6 +1628,7 @@ time_t FileFd::ModificationTime()
struct stat Buf;
if (d->pipe == false && fstat(iFd,&Buf) != 0)
{
+ Flags |= Fail;
_error->Errno("fstat","Unable to determine the modification time of file %s", FileName.c_str());
return 0;
}
@@ -1604,6 +1641,7 @@ time_t FileFd::ModificationTime()
d->pipe = true;
if (stat(FileName.c_str(), &Buf) != 0)
{
+ Flags |= Fail;
_error->Errno("fstat","Unable to determine the modification time of file %s", FileName.c_str());
return 0;
}
@@ -1663,6 +1701,8 @@ bool FileFd::Close()
d = NULL;
}
+ if (Res == false)
+ Flags |= Fail;
return Res;
}
/*}}}*/
@@ -1673,7 +1713,10 @@ bool FileFd::Sync()
{
#ifdef _POSIX_SYNCHRONIZED_IO
if (fsync(iFd) != 0)
+ {
+ Flags |= Fail;
return _error->Errno("sync",_("Problem syncing the file"));
+ }
#endif
return true;
}