int sys_posix_fallocate(int fd, SMB_OFF_T offset, SMB_OFF_T len);
int sys_fallocate(int fd, enum vfs_fallocate_mode mode, SMB_OFF_T offset, SMB_OFF_T len);
SMB_OFF_T sys_lseek(int fd, SMB_OFF_T offset, int whence);
-int sys_fseek(FILE *fp, SMB_OFF_T offset, int whence);
SMB_OFF_T sys_ftell(FILE *fp);
int sys_creat(const char *path, mode_t mode);
int sys_open(const char *path, int oflag, mode_t mode);