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-rw-r--r--sal/osl/unx/file.cxx97
-rw-r--r--sal/osl/w32/file.cxx33
2 files changed, 64 insertions, 66 deletions
diff --git a/sal/osl/unx/file.cxx b/sal/osl/unx/file.cxx
index 28cc35831..b8627b8c1 100644
--- a/sal/osl/unx/file.cxx
+++ b/sal/osl/unx/file.cxx
@@ -110,6 +110,7 @@ struct FileHandle_Impl
oslFileError setPos (sal_uInt64 uPos);
sal_uInt64 getSize() const;
+ oslFileError setSize (sal_uInt64 uSize);
oslFileError readAt (
off_t nOffset,
@@ -271,6 +272,47 @@ sal_uInt64 FileHandle_Impl::getSize() const
return std::max(m_size, sal::static_int_cast< sal_uInt64 >(bufend));
}
+oslFileError FileHandle_Impl::setSize (sal_uInt64 uSize)
+{
+ off_t const nSize = sal::static_int_cast< off_t >(uSize);
+ if (-1 == ftruncate (m_fd, nSize))
+ {
+ /* Failure. Save original result. Try fallback algorithm */
+ oslFileError result = oslTranslateFileError (OSL_FET_ERROR, errno);
+
+ /* Check against current size. Fail upon 'shrink' */
+ if (uSize <= getSize())
+ {
+ /* Failure upon 'shrink'. Return original result */
+ return (result);
+ }
+
+ /* Save current position */
+ off_t const nCurPos = (off_t)lseek (m_fd, (off_t)0, SEEK_CUR);
+ if (nCurPos == (off_t)(-1))
+ return (result);
+
+ /* Try 'expand' via 'lseek()' and 'write()' */
+ if (-1 == lseek (m_fd, (off_t)(nSize - 1), SEEK_SET))
+ return (result);
+
+ if (-1 == write (m_fd, (char*)"", (size_t)1))
+ {
+ /* Failure. Restore saved position */
+ (void) lseek (m_fd, (off_t)(nCurPos), SEEK_SET);
+ return (result);
+ }
+
+ /* Success. Restore saved position */
+ if (-1 == lseek (m_fd, (off_t)nCurPos, SEEK_SET))
+ return (result);
+ }
+
+ OSL_FILE_TRACE("osl_setFileSize(%d, %lld) => %ld", m_fd, getSize(), nSize);
+ m_size = sal::static_int_cast< sal_uInt64 >(nSize);
+ return osl_File_E_None;
+}
+
oslFileError FileHandle_Impl::readAt (
off_t nOffset,
void * pBuffer,
@@ -1282,62 +1324,11 @@ SAL_CALL osl_setFileSize( oslFileHandle Handle, sal_uInt64 uSize )
static sal_uInt64 const g_limit_off_t = std::numeric_limits< off_t >::max();
if (g_limit_off_t < uSize)
return osl_File_E_OVERFLOW;
- off_t const nSize = sal::static_int_cast< off_t >(uSize);
oslFileError result = pImpl->syncFile();
if (result != osl_File_E_None)
return (result);
+ pImpl->m_bufptr = -1, pImpl->m_buflen = 0;
- if (-1 == ftruncate (pImpl->m_fd, nSize))
- {
- /* Failure. Try fallback algorithm */
- off_t nCurPos;
-
- /* Save original result */
- result = oslTranslateFileError (OSL_FET_ERROR, errno);
- PERROR("ftruncate", "Try osl_setFileSize [fallback]\n");
-
- /* Check against current size. Fail upon 'shrink' */
- if (uSize <= pImpl->getSize())
- {
- /* Failure upon 'shrink'. Return original result */
- return (result);
- }
-
- /* Save current position *//* @@@ pImpl->m_offset @@@ */
- nCurPos = (off_t)lseek (pImpl->m_fd, (off_t)0, SEEK_CUR);
- if (nCurPos == (off_t)(-1))
- {
- PERROR("ftruncate: lseek", "Out osl_setFileSize [error]\n");
- return (result);
- }
-
- /* Try 'expand' via 'lseek()' and 'write()' */
- if (lseek (pImpl->m_fd, (off_t)(nSize - 1), SEEK_SET) < 0)
- {
- PERROR("ftruncate: lseek", "Out osl_setFileSize [error]\n");
- return (result);
- }
- if (write (pImpl->m_fd, (char*)"", (size_t)1) < 0)
- {
- /* Failure. Restore saved position */
- PERROR("ftruncate: write", "Out osl_setFileSize [error]\n");
- if (lseek (pImpl->m_fd, (off_t)nCurPos, SEEK_SET) < 0)
- {
- PERROR("ftruncate: lseek", "ignoring");
- }
- return (result);
- }
-
- /* Success. Restore saved position */
- if (lseek (pImpl->m_fd, (off_t)nCurPos, SEEK_SET) < 0)
- {
- PERROR("ftruncate: lseek", "Out osl_setFileSize [error]");
- return (result);
- }
- }
-
- OSL_FILE_TRACE("osl_setFileSize(%d, %lld) => %ld", pImpl->m_fd, pImpl->getSize(), nSize);
- pImpl->m_size = sal::static_int_cast< sal_uInt64 >(nSize);
- return osl_File_E_None;
+ return pImpl->setSize (uSize);
}
diff --git a/sal/osl/w32/file.cxx b/sal/osl/w32/file.cxx
index b8d231a1c..763fddd68 100644
--- a/sal/osl/w32/file.cxx
+++ b/sal/osl/w32/file.cxx
@@ -103,6 +103,7 @@ struct FileHandle_Impl
oslFileError setPos (sal_uInt64 uPos);
sal_uInt64 getSize() const;
+ oslFileError setSize (sal_uInt64 uPos);
oslFileError readAt (
LONGLONG nOffset,
@@ -253,6 +254,23 @@ sal_uInt64 FileHandle_Impl::getSize() const
return std::max(m_size, sal::static_int_cast< sal_uInt64 >(bufend));
}
+oslFileError FileHandle_Impl::setSize (sal_uInt64 uSize)
+{
+ LARGE_INTEGER nDstPos; nDstPos.QuadPart = sal::static_int_cast< LONGLONG >(uSize);
+ if (!::SetFilePointerEx(m_hFile, nDstPos, 0, FILE_BEGIN))
+ return oslTranslateFileError( GetLastError() );
+
+ if (!::SetEndOfFile(m_hFile))
+ return oslTranslateFileError( GetLastError() );
+ m_size = uSize;
+
+ nDstPos.QuadPart = m_offset;
+ if (!::SetFilePointerEx(m_hFile, nDstPos, 0, FILE_BEGIN))
+ return oslTranslateFileError( GetLastError() );
+
+ return osl_File_E_None;
+}
+
oslFileError FileHandle_Impl::readAt (
LONGLONG nOffset,
void * pBuffer,
@@ -1049,20 +1067,9 @@ SAL_CALL osl_setFileSize (oslFileHandle Handle, sal_uInt64 uSize)
oslFileError result = pImpl->syncFile();
if (result != osl_File_E_None)
return (result);
+ pImpl->m_bufptr = -1, pImpl->m_buflen = 0;
- LARGE_INTEGER nDstPos; nDstPos.QuadPart = sal::static_int_cast< LONGLONG >(uSize);
- if (!::SetFilePointerEx(pImpl->m_hFile, nDstPos, 0, FILE_BEGIN))
- return oslTranslateFileError( GetLastError() );
-
- if (!::SetEndOfFile(pImpl->m_hFile))
- return oslTranslateFileError( GetLastError() );
- pImpl->m_size = uSize;
-
- nDstPos.QuadPart = pImpl->m_offset;
- if (!::SetFilePointerEx(pImpl->m_hFile, nDstPos, 0, FILE_BEGIN))
- return oslTranslateFileError( GetLastError() );
-
- return osl_File_E_None;
+ return pImpl->setSize (uSize);
}
//##################################################################
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 07:08:47 +0000