+#include <cstdio>
#include <unistd.h>
#include <fcntl.h>
#include <lib/base/rawfile.h>
#include <lib/base/eerror.h>
+DEFINE_REF(eRawFile);
+
eRawFile::eRawFile()
+ :m_lock(false)
{
m_fd = -1;
m_file = 0;
off_t eRawFile::lseek(off_t offset, int whence)
{
+ eSingleLocker l(m_lock);
+ m_current_offset = lseek_internal(offset, whence);
+ return m_current_offset;
+}
+
+off_t eRawFile::lseek_internal(off_t offset, int whence)
+{
// eDebug("lseek: %lld, %d", offset, whence);
/* if there is only one file, use the native lseek - the file could be growing! */
if (m_nrfiles < 2)
return ::lseek(m_fd, offset, whence);
else
{
- ::fseeko(m_file, offset, whence);
+ if (::fseeko(m_file, offset, whence) < 0)
+ perror("fseeko");
return ::ftello(m_file);
}
}
}
}
-ssize_t eRawFile::read(void *buf, size_t count)
+ssize_t eRawFile::read(off_t offset, void *buf, size_t count)
{
-// eDebug("read: %p, %d", buf, count);
+ eSingleLocker l(m_lock);
+
+ if (offset != m_current_offset)
+ {
+ m_current_offset = lseek_internal(offset, SEEK_SET);
+ if (m_current_offset < 0)
+ return m_current_offset;
+ }
+
switchOffset(m_current_offset);
-
+
if (m_nrfiles >= 2)
{
if (m_current_offset + count > m_totallength)
}
return ::open(filename.c_str(), O_RDONLY | O_LARGEFILE);
}
+
+off_t eRawFile::length()
+{
+ return m_totallength;
+}