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-rw-r--r--apt-pkg/contrib/fileutl.cc71
1 files changed, 32 insertions, 39 deletions
diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index 81e6fec..08428e7 100644
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -2708,32 +2708,28 @@ bool FileFd::Read(void *To,unsigned long long Size,unsigned long long *Actual)
{
if (d == nullptr || Failed())
return false;
- ssize_t Res = 1;
- errno = 0;
if (Actual != 0)
*Actual = 0;
*((char *)To) = '\0';
- while (Res > 0 && Size > 0)
+ while (Size > 0)
{
- Res = d->InternalRead(To, Size);
+ errno = 0;
+ ssize_t Res = d->InternalRead(To, Size);
if (Res < 0)
{
if (errno == EINTR)
- {
- // trick the while-loop into running again
- Res = 1;
- errno = 0;
continue;
- }
return d->InternalReadError();
}
-
- To = (char *)To + Res;
+ if (Res == 0)
+ break;
+
+ To = static_cast<char *>(To) + Res;
Size -= Res;
- if (d != NULL)
+ if (d != nullptr)
d->set_seekpos(d->get_seekpos() + Res);
- if (Actual != 0)
+ if (Actual != nullptr)
*Actual += Res;
}
@@ -2751,24 +2747,22 @@ bool FileFd::Read(void *To,unsigned long long Size,unsigned long long *Actual)
}
bool FileFd::Read(int const Fd, void *To, unsigned long long Size, unsigned long long * const Actual)
{
- ssize_t Res = 1;
- errno = 0;
if (Actual != nullptr)
*Actual = 0;
*static_cast<char *>(To) = '\0';
- while (Res > 0 && Size > 0)
+ while (Size > 0)
{
- Res = read(Fd, To, Size);
+ errno = 0;
+ ssize_t const Res = read(Fd, To, Size);
if (Res < 0)
{
if (errno == EINTR)
- {
- Res = 1;
- errno = 0;
continue;
- }
return _error->Errno("read", _("Read error"));
}
+ if (Res == 0)
+ break;
+
To = static_cast<char *>(To) + Res;
Size -= Res;
if (Actual != 0)
@@ -2829,27 +2823,23 @@ bool FileFd::Write(const void *From,unsigned long long Size)
{
if (d == nullptr || Failed())
return false;
- ssize_t Res = 1;
- errno = 0;
- while (Res > 0 && Size > 0)
+ while (Size > 0)
{
- Res = d->InternalWrite(From, Size);
+ errno = 0;
+ ssize_t const Res = d->InternalWrite(From, Size);
if (Res < 0)
{
if (errno == EINTR)
- {
- // trick the while-loop into running again
- Res = 1;
- errno = 0;
continue;
- }
return d->InternalWriteError();
}
+ if (Res == 0)
+ break;
- From = (char const *)From + Res;
+ From = static_cast<char const *>(From) + Res;
Size -= Res;
- if (d != NULL)
+ if (d != nullptr)
d->set_seekpos(d->get_seekpos() + Res);
}
@@ -2860,17 +2850,20 @@ bool FileFd::Write(const void *From,unsigned long long Size)
}
bool FileFd::Write(int Fd, const void *From, unsigned long long Size)
{
- ssize_t Res = 1;
- errno = 0;
- while (Res > 0 && Size > 0)
+ while (Size > 0)
{
- Res = write(Fd,From,Size);
- if (Res < 0 && errno == EINTR)
- continue;
+ errno = 0;
+ ssize_t const Res = write(Fd, From, Size);
if (Res < 0)
+ {
+ if (errno == EINTR)
+ continue;
return _error->Errno("write",_("Write error"));
+ }
+ if (Res == 0)
+ break;
- From = (char const *)From + Res;
+ From = static_cast<char const *>(From) + Res;
Size -= Res;
}