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authorMichael Vogt <egon@debian-devbox>2012-01-18 10:27:15 +0100
committerMichael Vogt <egon@debian-devbox>2012-01-18 10:27:15 +0100
commit743b2763c20e5612938f11679ef3524682728a7a (patch)
tree6d51388478bee999339325e9057f3ebe2bcb0a0f /apt-pkg/contrib/fileutl.cc
parent5abee4863220c2d9b135dc832b33c8680e5ba12e (diff)
parent65c72a4b84273bf8063076bd74861b5931c2b8a5 (diff)
* apt-pkg/contrib/fileutl.h:
- store the offset in the internal fd before calculate size of the zlib-handled file to jump back to this place again * apt-pkg/contrib/fileutl.h:
Diffstat (limited to 'apt-pkg/contrib/fileutl.cc')
-rw-r--r--apt-pkg/contrib/fileutl.cc24
1 files changed, 18 insertions, 6 deletions
diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index b350973af..28898fc34 100644
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -867,6 +867,7 @@ bool FileFd::Open(string FileName,unsigned int const Mode,APT::Configuration::Co
else
iFd = open(FileName.c_str(), fileflags, Perms);
+ this->FileName = FileName;
if (iFd == -1 || OpenInternDescriptor(Mode, compressor) == false)
{
if (iFd != -1)
@@ -877,7 +878,6 @@ bool FileFd::Open(string FileName,unsigned int const Mode,APT::Configuration::Co
return _error->Errno("open",_("Could not open file %s"), FileName.c_str());
}
- this->FileName = FileName;
SetCloseExec(iFd,true);
return true;
}
@@ -916,13 +916,13 @@ bool FileFd::OpenDescriptor(int Fd, unsigned int const Mode, APT::Configuration:
d->openmode = Mode;
Flags = (AutoClose) ? FileFd::AutoClose : 0;
iFd = Fd;
+ this->FileName = "";
if (OpenInternDescriptor(Mode, compressor) == false)
{
if (AutoClose)
close (iFd);
return _error->Errno("gzdopen",_("Could not open file descriptor %d"), Fd);
}
- this->FileName = "";
return true;
}
bool FileFd::OpenInternDescriptor(unsigned int const Mode, APT::Configuration::Compressor const &compressor)
@@ -1057,11 +1057,21 @@ bool FileFd::Read(void *To,unsigned long long Size,unsigned long long *Actual)
else
#endif
Res = read(iFd,To,Size);
- if (Res < 0 && errno == EINTR)
- continue;
+
if (Res < 0)
{
+ if (errno == EINTR)
+ continue;
Flags |= Fail;
+#if APT_USE_ZLIB
+ if (d->gz != NULL)
+ {
+ int err;
+ char const * const errmsg = gzerror(d->gz, &err);
+ if (err != Z_ERRNO)
+ return _error->Error("gzread: %s (%d: %s)", _("Read error"), err, errmsg);
+ }
+#endif
return _error->Errno("read",_("Read error"));
}
@@ -1337,6 +1347,7 @@ unsigned long long FileFd::Size()
// gzopen in "direct" mode as well
else if (d->gz && !gzdirect(d->gz) && size > 0)
{
+ off_t const oldPos = lseek(iFd,0,SEEK_CUR);
/* unfortunately zlib.h doesn't provide a gzsize(), so we have to do
* this ourselves; the original (uncompressed) file size is the last 32
* bits of the file */
@@ -1354,8 +1365,9 @@ unsigned long long FileFd::Size()
size = tmp_size;
#endif
- if (lseek(iFd, d->seekpos, SEEK_SET) < 0)
+ if (lseek(iFd, oldPos, SEEK_SET) < 0)
return _error->Errno("lseek","Unable to seek in gzipped file");
+
return size;
}
#endif
@@ -1405,7 +1417,7 @@ bool FileFd::Close()
#if APT_USE_ZLIB
if (d != NULL && d->gz != NULL) {
int const e = gzclose(d->gz);
- // gzdopen() on empty files always fails with "buffer error" here, ignore that
+ // gzdclose() on empty files always fails with "buffer error" here, ignore that
if (e != 0 && e != Z_BUF_ERROR)
Res &= _error->Errno("close",_("Problem closing the gzip file %s"), FileName.c_str());
} else