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mdbx-osal: add mdbx_fseek().

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Change-Id: I5744aa3ba51bd1acaeedd866e6b21a1330c3f711
This commit is contained in:
Leonid Yuriev 2018-11-04 18:57:08 +03:00 committed by Leo Yuriev
parent 06cb8b45b2
commit 629637d95e
2 changed files with 14 additions and 0 deletions
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13
src/osal.c
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@ -753,6 +753,19 @@ int mdbx_ftruncate(mdbx_filehandle_t fd, uint64_t length) {
#endif #endif
} }
int mdbx_fseek(mdbx_filehandle_t fd, uint64_t pos) {
#if defined(_WIN32) || defined(_WIN64)
LARGE_INTEGER li;
li.QuadPart = pos;
return SetFilePointerEx(fd, li, NULL, FILE_BEGIN) ? MDBX_SUCCESS
: GetLastError();
#else
STATIC_ASSERT_MSG(sizeof(off_t) >= sizeof(size_t),
"libmdbx requires 64-bit file I/O on 64-bit systems");
return (lseek(fd, pos, SEEK_SET) < 0) ? errno : MDBX_SUCCESS;
#endif
}
/*----------------------------------------------------------------------------*/ /*----------------------------------------------------------------------------*/
int mdbx_thread_create(mdbx_thread_t *thread, int mdbx_thread_create(mdbx_thread_t *thread,

1
src/osal.h
View File

@ -504,6 +504,7 @@ int mdbx_thread_join(mdbx_thread_t thread);
int mdbx_filesync(mdbx_filehandle_t fd, bool fullsync); int mdbx_filesync(mdbx_filehandle_t fd, bool fullsync);
int mdbx_filesize_sync(mdbx_filehandle_t fd); int mdbx_filesize_sync(mdbx_filehandle_t fd);
int mdbx_ftruncate(mdbx_filehandle_t fd, uint64_t length); int mdbx_ftruncate(mdbx_filehandle_t fd, uint64_t length);
int mdbx_fseek(mdbx_filehandle_t fd, uint64_t pos);
int mdbx_filesize(mdbx_filehandle_t fd, uint64_t *length); int mdbx_filesize(mdbx_filehandle_t fd, uint64_t *length);
int mdbx_openfile(const char *pathname, int flags, mode_t mode, int mdbx_openfile(const char *pathname, int flags, mode_t mode,
mdbx_filehandle_t *fd, bool exclusive); mdbx_filehandle_t *fd, bool exclusive);